The voltage protection relay has the following key features:
(1) It provides low-set and high-set protection for undervoltage, overvoltage, negative sequence overvoltage, and residual overvoltage with definite or inverse time characteristics.
(2) It continuously monitors 3 voltage inputs and derives the necessary measurements for protection element operation.
(3) It has a digital interface for accessing measurements, settings, and fault records and isolated communication for remote access.
This document discusses various types of sensors including potentiometers, linear variable differential transformers (LVDTs), and strain gauges. It provides details on their construction, operation, and applications. It focuses on strain gauges, explaining their resistive principle, common usages, application process, Wheatstone bridge configurations, temperature compensation, and different configurations for measuring traction and bending forces.
Design, Modeling and control of modular multilevel converters (MMC) based hvd...Ghazal Falahi
This document outlines the design, modeling, and control of modular multilevel converter (MMC) based HVDC systems. It begins with background information on MMC technology and discusses state of the art MMC systems using IGBT devices that have higher losses than desired. The document then proposes a design procedure for an MMC-HVDC system using emerging ETO semiconductor devices, which are expected to have lower losses than IGBTs. It provides details on the MMC topology, mathematical modeling, control schemes, modulation methods, and proposes a new 60Hz modulation strategy along with a method to estimate losses for the system.
Ls catalog thiet bi dien g empr-dmpr_dienhathe.vnDien Ha The
Khoa Học - Kỹ Thuật & Giải Trí: http://phongvan.org
Tài Liệu Khoa Học Kỹ Thuật: http://tailieukythuat.info
Thiết bị Điện Công Nghiệp - Điện Hạ Thế: http://dienhathe.org
The document summarizes the features and specifications of the ACPL-796J optically isolated sigma-delta modulator from Avago Technologies. It includes a 1-bit, second order sigma-delta modulator with 16-bit resolution, 74dB minimum SNR, and ±200mV input range. The modulator provides precision current and voltage sensing for applications such as motor control and industrial process control.
Original High Performance Off-Line Controller IC ACT30 CT30 30 New Active-SemiAUTHELECTRONIC
The document describes the ACT30, a high performance off-line power supply controller IC. It has features like low standby power of 0.15W, overcurrent protection, and hiccup mode short circuit protection. It uses current mode control and can drive external NPN or MOSFET switches. It is suitable for use in battery chargers, adapters, and other power supplies.
Controlling of DC Motor using IC 555 TimerUpendra Chokka
This document describes a student project to control the speed of a DC motor using pulse width modulation. It includes a list of components used, an overview of the theory behind pulse width modulation and DC motors, diagrams of the PWM waveform and 555 timer IC, and schematics of the circuit both simulated and on breadboard/PCB. The circuit uses a 555 timer and potentiometer to vary the duty cycle and thereby control motor speed. Construction, working, conclusions and resources are also summarized.
This document discusses various types of sensors including potentiometers, linear variable differential transformers (LVDTs), and strain gauges. It provides details on their construction, operation, and applications. It focuses on strain gauges, explaining their resistive principle, common usages, application process, Wheatstone bridge configurations, temperature compensation, and different configurations for measuring traction and bending forces.
Design, Modeling and control of modular multilevel converters (MMC) based hvd...Ghazal Falahi
This document outlines the design, modeling, and control of modular multilevel converter (MMC) based HVDC systems. It begins with background information on MMC technology and discusses state of the art MMC systems using IGBT devices that have higher losses than desired. The document then proposes a design procedure for an MMC-HVDC system using emerging ETO semiconductor devices, which are expected to have lower losses than IGBTs. It provides details on the MMC topology, mathematical modeling, control schemes, modulation methods, and proposes a new 60Hz modulation strategy along with a method to estimate losses for the system.
Ls catalog thiet bi dien g empr-dmpr_dienhathe.vnDien Ha The
Khoa Học - Kỹ Thuật & Giải Trí: http://phongvan.org
Tài Liệu Khoa Học Kỹ Thuật: http://tailieukythuat.info
Thiết bị Điện Công Nghiệp - Điện Hạ Thế: http://dienhathe.org
The document summarizes the features and specifications of the ACPL-796J optically isolated sigma-delta modulator from Avago Technologies. It includes a 1-bit, second order sigma-delta modulator with 16-bit resolution, 74dB minimum SNR, and ±200mV input range. The modulator provides precision current and voltage sensing for applications such as motor control and industrial process control.
Original High Performance Off-Line Controller IC ACT30 CT30 30 New Active-SemiAUTHELECTRONIC
The document describes the ACT30, a high performance off-line power supply controller IC. It has features like low standby power of 0.15W, overcurrent protection, and hiccup mode short circuit protection. It uses current mode control and can drive external NPN or MOSFET switches. It is suitable for use in battery chargers, adapters, and other power supplies.
Controlling of DC Motor using IC 555 TimerUpendra Chokka
This document describes a student project to control the speed of a DC motor using pulse width modulation. It includes a list of components used, an overview of the theory behind pulse width modulation and DC motors, diagrams of the PWM waveform and 555 timer IC, and schematics of the circuit both simulated and on breadboard/PCB. The circuit uses a 555 timer and potentiometer to vary the duty cycle and thereby control motor speed. Construction, working, conclusions and resources are also summarized.
This document provides instructions for installing, commissioning, and maintaining Horstmann S1xxR smart electricity meters and associated smart metering equipment as part of a UK smart metering trial. It describes the equipment, safety considerations, installation process including selecting tariff configurations and assessing wireless signal strength, and commissioning steps for adding a home energy monitor and gas unit to the meter's network. Maintenance instructions are also provided for servicing, changing equipment, and removing the system.
Practical handbook-for-relay-protection-engineersSARAVANAN A
The ‘Hand Book’ covers the Code of Practice in Protection Circuitry including standard lead and device numbers, mode of connections at terminal strips, colour codes in multicore cables, Dos and Donts in execution. Also, principles of various protective relays and schemes including special protection schemes like differential,
restricted, directional and distance relays are explained with sketches. The norms of protection of generators, transformers, lines & Capacitor Banks are also given.
Zhuhai Sinopak Electric Ltd produces motor drives and power quality equipment including medium and low voltage variable frequency drives, soft starters, static synchronous compensators, and active power filters. The company aims to improve production efficiency and energy savings for customers across Southeast Asia, Eastern Europe, the Middle East, and Africa.
Zhuhai Sinopak Electric Ltd produces motor drives and power quality equipment including medium and low voltage variable frequency drives, soft starters, static synchronous compensators, and active power filters. The company aims to improve production efficiency and energy savings for customers across Southeast Asia, Eastern Europe, the Middle East, and Africa.
This document provides an overview and introduction to the LV-AS Soft Starter product line. It discusses key features such as:
1) Current ratings from 18A to 200A and voltage options of 200-440V or 200-575V.
2) Compact design that minimizes space and includes built-in bypass to reduce costs.
3) Easy configuration through interface with status feedback and diagnostic trip codes.
4) Provides soft start/stop and essential motor and system protections without need for extra equipment.
This document provides instructions for a Z-Wave thermostat and sensor device. The device can measure temperature, detect binary sensor states, and control heating devices as a thermostat. It communicates using the Z-Wave wireless protocol and operates on batteries. The summary includes instructions for inclusion, exclusion, configuration, and operating the temperature, binary sensor, and thermostat functions.
The PT4115 is a step-down LED driver that operates from 6-30V and provides up to 1.2A of output current. It uses high-side current sensing and has a DIM input that allows for PWM or DC dimming from 5000:1 to 25:1. It is available in SOT89-5 and ESOP8 packages and is designed for applications such as lighting, signs, and backlighting.
This document discusses different types of diode rectifier circuits used to convert alternating current (AC) signals to direct current (DC) in power supplies. It describes half-cycle rectification which uses a single diode and only utilizes half of the AC signal. Full-cycle rectification is explained as using two diodes to utilize both halves of the AC signal. Bridge rectification is then introduced as the most widely used method, using four diodes in a bridge pattern without requiring a center-tapped transformer.
This document provides instructions and specifications for a Philips color television chassis. It includes:
1. Technical specifications for the television such as reception details, connections, power requirements, and dimensions.
2. Safety and maintenance instructions, including warnings to take precautions against electrostatic discharge when working on the television and to discharge the picture tube safely.
3. Notes on measuring voltages and waveforms, maintaining the television, and schematic symbols and component value notation.
Minilux light wired sensor for outdoor mounting 0-10V manualDomotica daVinci
1. The document provides technical specifications for the Minilux light sensor 43-198, including that it has a 24 V DC input, 0-10V output, IP54 protection class, and lux ranges of 3-300, 30-3K, 300-30K, and 600-60K lux.
2. The light sensor has screw terminal connection and can be connected up to 100m from the Minilux Control.
3. Placement guidelines recommend mounting on a northern wall to minimize shadow effects and ensure light neutrality relative to the sun's daily east-south-west cycle.
The LM231/LM331 family of integrated circuits are precision voltage-to-frequency converters suited for analog-to-digital conversion and other applications. They output a pulse train whose frequency is precisely proportional to the input voltage. The devices use a temperature-compensated bandgap reference for excellent accuracy over a wide temperature range from 4V to 40V supply. They can drive TTL loads or provide higher voltage outputs while being short-circuit proof. Key features include high linearity, temperature stability, and wide dynamic range at frequencies from 1Hz to 100kHz.
Qubino flush dimmer 0 10-v plus user manual_v1.0_engDomotica daVinci
The document describes the Qubino Flush Dimmer 0-10V, a Z-Wave compatible dimmer module with a 0-10V output and multi-function input. It can be controlled via push button, potentiometer, or 0-10V signal. The module includes to a Z-Wave network and supports association groups to control other devices. It has configuration parameters to set functions like input type, auto on/off times, minimum/maximum dimming levels, and sensor reporting thresholds.
Mirus onics harmonic_mitigating_power_center_datasheetAngus Sankaran
The document is a specification for a Harmonic Mitigating Power Center (HMPC) that provides harmonic mitigation, isolation, distribution, control and monitoring of electrical power. It details the electrical and mechanical requirements and components of the HMPC including a harmonic mitigating transformer, distribution panelboards, cabinet construction, optional power monitors, transient voltage surge suppression and remote emergency power off capabilities. The specification is intended to cover the electrical characteristics and general requirements for the HMPC to properly interface a building's power source with sensitive electronic loads.
Pulse width modulation (PWM) is a method of changing the duration of a pulse with respect to the analog input. The duty cycle of a square wave is modulated to encode a specific analog signal level. This pulse width modulation tutorial gives you the basic principle of generation of a PWM signal. The PWM signal is digital because at any given instant of time, the full DC supply is either ON or OFF completely. PWM method is commonly used for speed controlling of fans, motors, lights in varying intensities, pulse width modulation controller etc. These signals may also be used for approximate time-varying of analogue signals. Below you can see the pulse width modulation generator circuit diagram (pulse width modulator) using op amp. PWM is employed in a wide variety of applications, ranging from measurement and communications to power control and conversion. Pulse width modulation dc motor control is one of the popular circuits in Robotics.
This document discusses low dropout (LDO) voltage regulators. It begins with an introduction to LDOs, their basic architecture, and key specifications. It then reviews LDO requirements for digital, analog and RF loads. The document defines and explains important LDO specifications like input voltage range, ground current, dropout voltage, load regulation and more. It concludes with a discussion of how circuit features and understanding specifications can enhance LDO performance for different applications.
Tense Electronics is a Turkish company that produces industrial automation products. It has been operating since 2006 and exports to over 40 countries from its production facility in Istanbul. The company aims to provide high quality, customized solutions to customers using new technologies. Tense Electronics holds certifications like CE, UKRSEPRO, and GOST-R and produces products like power factor controllers, protection relays, and monitoring equipment.
(1) Current shaping strategies for buck power factor correction converters are discussed. (2) Sine-squared modulation is analyzed where the average inductor current is shaped to follow a sine-squared waveform to improve the power factor. (3) The K-value, which determines the conduction angle and power factor, is analyzed and its impact on the harmonic content of the input current is shown, with various harmonics either meeting or violating Class C and Class D emission standards based on the K-value.
Started to create milestones, we, Novatek Electro (India) Pvt. Ltd. marked our presence in the year 2009 and operate in the manufacturing/servicing of Microprocessor Based Devices as well as engineers of control since 5 years. Our quality services products have been always appreciated by our clients. Our spontaneous attitude and confident approach in offering an excellent range of Single Phase Voltage Monitoring Relays, Single Phase Voltage Monitoring Relays, Voltage Monitoring & Current Overload Relay, Powerful Voltage Monitoring Relays, Three Phase Voltage Monitoring Relays, Auto Phase Selector Switches, Time Delay Relays, Programmable Astro Timers, Sequential & Combination Timer, Numeric Motor Protection Devices has deepened our roots in the market. We, Novatek Electro (India) Pvt. Ltd. breathe with the aim of fully satisfying our clients with our high-quality products services. We are a unit of highly experienced professionals, all of them contributing at the best of their potentials to offer the highest degree of efficiency and client satisfaction.
This document provides product information for several single-phase voltage monitoring relays manufactured by Novatek-Electro, including models PH-102, RN-101M, and RN-113. The relays are designed to protect electrical equipment from unacceptable voltage fluctuations by disconnecting power when voltage levels exceed user-defined thresholds and automatically reconnecting power when levels return to normal. They can monitor voltages from 220-240V at 50Hz and are intended for loads up to 6.5 kW, 3.5 kW, and 7 kW respectively. The documents provide detailed specifications, diagrams of the relays, and descriptions of their functions and modes of operation.
(http://www.novatek-electro.in) Novatek Electro is specializing in the development and the subsequent manufacturing implementation of Programmable Power Electronics, Instrumentation or so called general purpose and special-purpose Intelligent Electronic Systems (IGM’s). This kind of electronics finds application in producing next generation switching protection devices, apparatus for monitoring, control and metering, protective relaying devices and automatic equipment, technology controllers etc.
Protection, Control and Operation of Transformer Using Numerical Relayidescitation
This paper explains about the faults occurring in transformer, fault withstand
capability of transformer and numerical relays used for protection against fault. Numerical
relay can be used to operate, control and protect the transformer used in power system.
The document discusses various electrical protections for a generator transformer, including:
1. Transformer biased differential protection (87GT) that detects internal faults but not through faults.
2. Overhang differential protection (87L) that provides backup protection for the HV side.
3. Backup earth fault protection (51NGT) that operates for inside and outside zone faults if other protections fail.
4. Overall differential protection (87OA) that protects multiple components using multiple current transformer inputs.
5. Over-fluxing protection (99GT) that monitors the voltage-to-frequency ratio to prevent insulation damage.
6. HV overcurrent protection (51GT) that protects against overloads and phase-to
This document provides instructions for installing, commissioning, and maintaining Horstmann S1xxR smart electricity meters and associated smart metering equipment as part of a UK smart metering trial. It describes the equipment, safety considerations, installation process including selecting tariff configurations and assessing wireless signal strength, and commissioning steps for adding a home energy monitor and gas unit to the meter's network. Maintenance instructions are also provided for servicing, changing equipment, and removing the system.
Practical handbook-for-relay-protection-engineersSARAVANAN A
The ‘Hand Book’ covers the Code of Practice in Protection Circuitry including standard lead and device numbers, mode of connections at terminal strips, colour codes in multicore cables, Dos and Donts in execution. Also, principles of various protective relays and schemes including special protection schemes like differential,
restricted, directional and distance relays are explained with sketches. The norms of protection of generators, transformers, lines & Capacitor Banks are also given.
Zhuhai Sinopak Electric Ltd produces motor drives and power quality equipment including medium and low voltage variable frequency drives, soft starters, static synchronous compensators, and active power filters. The company aims to improve production efficiency and energy savings for customers across Southeast Asia, Eastern Europe, the Middle East, and Africa.
Zhuhai Sinopak Electric Ltd produces motor drives and power quality equipment including medium and low voltage variable frequency drives, soft starters, static synchronous compensators, and active power filters. The company aims to improve production efficiency and energy savings for customers across Southeast Asia, Eastern Europe, the Middle East, and Africa.
This document provides an overview and introduction to the LV-AS Soft Starter product line. It discusses key features such as:
1) Current ratings from 18A to 200A and voltage options of 200-440V or 200-575V.
2) Compact design that minimizes space and includes built-in bypass to reduce costs.
3) Easy configuration through interface with status feedback and diagnostic trip codes.
4) Provides soft start/stop and essential motor and system protections without need for extra equipment.
This document provides instructions for a Z-Wave thermostat and sensor device. The device can measure temperature, detect binary sensor states, and control heating devices as a thermostat. It communicates using the Z-Wave wireless protocol and operates on batteries. The summary includes instructions for inclusion, exclusion, configuration, and operating the temperature, binary sensor, and thermostat functions.
The PT4115 is a step-down LED driver that operates from 6-30V and provides up to 1.2A of output current. It uses high-side current sensing and has a DIM input that allows for PWM or DC dimming from 5000:1 to 25:1. It is available in SOT89-5 and ESOP8 packages and is designed for applications such as lighting, signs, and backlighting.
This document discusses different types of diode rectifier circuits used to convert alternating current (AC) signals to direct current (DC) in power supplies. It describes half-cycle rectification which uses a single diode and only utilizes half of the AC signal. Full-cycle rectification is explained as using two diodes to utilize both halves of the AC signal. Bridge rectification is then introduced as the most widely used method, using four diodes in a bridge pattern without requiring a center-tapped transformer.
This document provides instructions and specifications for a Philips color television chassis. It includes:
1. Technical specifications for the television such as reception details, connections, power requirements, and dimensions.
2. Safety and maintenance instructions, including warnings to take precautions against electrostatic discharge when working on the television and to discharge the picture tube safely.
3. Notes on measuring voltages and waveforms, maintaining the television, and schematic symbols and component value notation.
Minilux light wired sensor for outdoor mounting 0-10V manualDomotica daVinci
1. The document provides technical specifications for the Minilux light sensor 43-198, including that it has a 24 V DC input, 0-10V output, IP54 protection class, and lux ranges of 3-300, 30-3K, 300-30K, and 600-60K lux.
2. The light sensor has screw terminal connection and can be connected up to 100m from the Minilux Control.
3. Placement guidelines recommend mounting on a northern wall to minimize shadow effects and ensure light neutrality relative to the sun's daily east-south-west cycle.
The LM231/LM331 family of integrated circuits are precision voltage-to-frequency converters suited for analog-to-digital conversion and other applications. They output a pulse train whose frequency is precisely proportional to the input voltage. The devices use a temperature-compensated bandgap reference for excellent accuracy over a wide temperature range from 4V to 40V supply. They can drive TTL loads or provide higher voltage outputs while being short-circuit proof. Key features include high linearity, temperature stability, and wide dynamic range at frequencies from 1Hz to 100kHz.
Qubino flush dimmer 0 10-v plus user manual_v1.0_engDomotica daVinci
The document describes the Qubino Flush Dimmer 0-10V, a Z-Wave compatible dimmer module with a 0-10V output and multi-function input. It can be controlled via push button, potentiometer, or 0-10V signal. The module includes to a Z-Wave network and supports association groups to control other devices. It has configuration parameters to set functions like input type, auto on/off times, minimum/maximum dimming levels, and sensor reporting thresholds.
Mirus onics harmonic_mitigating_power_center_datasheetAngus Sankaran
The document is a specification for a Harmonic Mitigating Power Center (HMPC) that provides harmonic mitigation, isolation, distribution, control and monitoring of electrical power. It details the electrical and mechanical requirements and components of the HMPC including a harmonic mitigating transformer, distribution panelboards, cabinet construction, optional power monitors, transient voltage surge suppression and remote emergency power off capabilities. The specification is intended to cover the electrical characteristics and general requirements for the HMPC to properly interface a building's power source with sensitive electronic loads.
Pulse width modulation (PWM) is a method of changing the duration of a pulse with respect to the analog input. The duty cycle of a square wave is modulated to encode a specific analog signal level. This pulse width modulation tutorial gives you the basic principle of generation of a PWM signal. The PWM signal is digital because at any given instant of time, the full DC supply is either ON or OFF completely. PWM method is commonly used for speed controlling of fans, motors, lights in varying intensities, pulse width modulation controller etc. These signals may also be used for approximate time-varying of analogue signals. Below you can see the pulse width modulation generator circuit diagram (pulse width modulator) using op amp. PWM is employed in a wide variety of applications, ranging from measurement and communications to power control and conversion. Pulse width modulation dc motor control is one of the popular circuits in Robotics.
This document discusses low dropout (LDO) voltage regulators. It begins with an introduction to LDOs, their basic architecture, and key specifications. It then reviews LDO requirements for digital, analog and RF loads. The document defines and explains important LDO specifications like input voltage range, ground current, dropout voltage, load regulation and more. It concludes with a discussion of how circuit features and understanding specifications can enhance LDO performance for different applications.
Tense Electronics is a Turkish company that produces industrial automation products. It has been operating since 2006 and exports to over 40 countries from its production facility in Istanbul. The company aims to provide high quality, customized solutions to customers using new technologies. Tense Electronics holds certifications like CE, UKRSEPRO, and GOST-R and produces products like power factor controllers, protection relays, and monitoring equipment.
(1) Current shaping strategies for buck power factor correction converters are discussed. (2) Sine-squared modulation is analyzed where the average inductor current is shaped to follow a sine-squared waveform to improve the power factor. (3) The K-value, which determines the conduction angle and power factor, is analyzed and its impact on the harmonic content of the input current is shown, with various harmonics either meeting or violating Class C and Class D emission standards based on the K-value.
Started to create milestones, we, Novatek Electro (India) Pvt. Ltd. marked our presence in the year 2009 and operate in the manufacturing/servicing of Microprocessor Based Devices as well as engineers of control since 5 years. Our quality services products have been always appreciated by our clients. Our spontaneous attitude and confident approach in offering an excellent range of Single Phase Voltage Monitoring Relays, Single Phase Voltage Monitoring Relays, Voltage Monitoring & Current Overload Relay, Powerful Voltage Monitoring Relays, Three Phase Voltage Monitoring Relays, Auto Phase Selector Switches, Time Delay Relays, Programmable Astro Timers, Sequential & Combination Timer, Numeric Motor Protection Devices has deepened our roots in the market. We, Novatek Electro (India) Pvt. Ltd. breathe with the aim of fully satisfying our clients with our high-quality products services. We are a unit of highly experienced professionals, all of them contributing at the best of their potentials to offer the highest degree of efficiency and client satisfaction.
This document provides product information for several single-phase voltage monitoring relays manufactured by Novatek-Electro, including models PH-102, RN-101M, and RN-113. The relays are designed to protect electrical equipment from unacceptable voltage fluctuations by disconnecting power when voltage levels exceed user-defined thresholds and automatically reconnecting power when levels return to normal. They can monitor voltages from 220-240V at 50Hz and are intended for loads up to 6.5 kW, 3.5 kW, and 7 kW respectively. The documents provide detailed specifications, diagrams of the relays, and descriptions of their functions and modes of operation.
(http://www.novatek-electro.in) Novatek Electro is specializing in the development and the subsequent manufacturing implementation of Programmable Power Electronics, Instrumentation or so called general purpose and special-purpose Intelligent Electronic Systems (IGM’s). This kind of electronics finds application in producing next generation switching protection devices, apparatus for monitoring, control and metering, protective relaying devices and automatic equipment, technology controllers etc.
Protection, Control and Operation of Transformer Using Numerical Relayidescitation
This paper explains about the faults occurring in transformer, fault withstand
capability of transformer and numerical relays used for protection against fault. Numerical
relay can be used to operate, control and protect the transformer used in power system.
The document discusses various electrical protections for a generator transformer, including:
1. Transformer biased differential protection (87GT) that detects internal faults but not through faults.
2. Overhang differential protection (87L) that provides backup protection for the HV side.
3. Backup earth fault protection (51NGT) that operates for inside and outside zone faults if other protections fail.
4. Overall differential protection (87OA) that protects multiple components using multiple current transformer inputs.
5. Over-fluxing protection (99GT) that monitors the voltage-to-frequency ratio to prevent insulation damage.
6. HV overcurrent protection (51GT) that protects against overloads and phase-to
The NCP1032 is an integrated circuit that can be used to implement switching regulator applications with minimal external components. It contains all the active power control logic and protection circuitry needed, including an on-chip high voltage power switch, startup circuit, fixed frequency oscillator up to 1 MHz, and current limit, soft start, and thermal protection features. It is well-suited for applications requiring up to 3W output in isolated power supplies for telecom and medical equipment.
The LM555 is an integrated circuit used for generating accurate time delays or oscillations. It can be used in monostable or astable configuration. In monostable mode, the time delay is controlled by one resistor and capacitor. In astable mode, the frequency and duty cycle are controlled by two resistors and one capacitor. The circuit can be triggered and reset. The output can source or sink up to 200mA. It has applications in precision timing, pulse generation, and sequential timing.
Mikro,
Catalog Thiết Bị Điện Mikro, Catalog Thiết Bị Điện,
Catalog Phụ Kiện Mikro, Catalog Phụ Kiện,
Catalog Mikro, Catalog,
http://dienhathe.com,
Chi tiết các sản phẩm khác của Mikro tại https://dienhathe.com
Xem thêm các Catalog khác của Mikro tại https://dienhathe.info
Để nhận báo giá sản phẩm Mikro vui lòng gọi: 0907.764.966
Mikro,
Catalog Thiết Bị Điện Mikro, Catalog Thiết Bị Điện,
Catalog Phụ Kiện Mikro, Catalog Phụ Kiện,
Catalog Mikro, Catalog,
http://dienhathe.com,
Chi tiết các sản phẩm khác của Mikro tại https://dienhathe.com
Xem thêm các Catalog khác của Mikro tại https://dienhathe.info
Để nhận báo giá sản phẩm Mikro vui lòng gọi: 0907.764.966
Catalog mikro mikro mk300-user-dienhathe.vnDien Ha The
The document provides an overview and user guide for the MK300 and MK300E earth leakage relays, which monitor electrical installation leakage currents.
Key features include microprocessor-based design, digital filtering to minimize nuisance trips, continuous display of leakage current, recording of tripped current values, and programming of sensitivity and time delay settings.
The MK300E adds remote test and reset inputs, a positive safety output contact, and 50% pre-fault contact. Technical specifications include voltage and current ratings, indicator functions, mounting details, and connection diagrams.
This document summarizes the features and operation of the A4988 microstepping motor driver IC. It has built-in current regulation and motor control logic to drive bipolar stepper motors in various microstep modes. Key features include mixed and slow current decay modes for reduced noise and accurate stepping, internal protection from overcurrent and thermal issues, and a simple interface requiring only a STEP input to drive the motor. It operates from a single power supply and comes in a small QFN package well-suited for motor driver applications.
To Diminish the Voltage Sag Replaced DVR with Generalized Modulation Strategy...IRJET Journal
This document discusses replacing a conventional Dynamic Voltage Restorer (DVR) with a matrix converter to compensate for voltage sags. A DVR injects voltage to maintain the load voltage during disturbances. Conventional DVRs use bulky AC-DC-AC converters. The proposed model replaces this with a matrix converter to avoid energy storage and allow for higher power density. A matrix converter directly converts AC to AC using bi-directional switches. It can compensate for voltage sags and swells more efficiently than a conventional DVR without energy storage limitations. Simulation results show the DVR with matrix converter effectively regulates voltage during faults.
A project report on Remote Monitoring of a Power Station using GSM and ArduinoJawwad Sadiq Ayon
This document describes a project to remotely monitor the voltage of a power station/substation using GSM. An Arduino board measures the voltage using a potential divider circuit and sends the readings via a SIM908 GSM module in SMS messages. The project prototype monitors voltage, displays it on an LCD, and sends updates every 10 minutes. Future work could expand monitoring to other parameters and use GPRS for remote access from anywhere via the internet.
Voltages and currents present at the generator's rated voltage and current are provided as examples. Sample relay setting calculations are shown for generator protection elements including 59N neutral overvoltage, 27TN third harmonic undervoltage, 46 negative sequence overcurrent, and coordination between protective devices. Formulas for calculating voltage and current settings from generator nameplate data are demonstrated.
This document provides information about the Qubino Flush 1 relay Z-Wave module. The module can be used to switch electrical devices on or off through the Z-wave network or a wall switch. It measures power consumption and supports a digital temperature sensor. The module is designed to be installed in a wall switch box behind a traditional wall switch. It can support mono-stable or bi-stable switches and has configuration parameters for functions like input type and power reporting.
The document summarizes the features and specifications of the SPX29300/01/02/03 3A low dropout voltage regulators. Key points:
- They are 3A voltage regulators with a low dropout voltage of 450mV at 3A output current, designed for low voltage applications requiring fast response times.
- Features include adjustable and fixed output options, reverse battery and overcurrent protection, tight load and line regulation, and fast transient response.
- Electrical specifications include 1% output accuracy, low quiescent current, and temperature coefficients.
- Applications include powering computer components, high efficiency power supplies, and battery chargers.
- Typical circuits shown regulate the output voltage via feedback resistors
Gsm based transformer fault detection systemKabilesh K
This document describes a GSM-based system for remotely monitoring and detecting faults in distribution transformers. The system uses sensors to monitor the transformer's voltage, temperature, power consumption, and oil level. It sends alerts via GSM if any of these exceed safe limits. A microcontroller processes the sensor data and triggers a relay to disconnect the transformer if a fault is detected, sending an SMS alert. This allows faults to be addressed before complete failure occurs, improving reliability while reducing costs compared to manual monitoring.
This document discusses transformer overcurrent protection calculations and settings. It provides information on:
1. Coordination principles for transformer protection and examples of typical protection zones for different fault locations.
2. Guidelines for setting instantaneous and time-overcurrent relays to ensure selective coordination, including maintaining coordination intervals.
3. Calculations for determining short circuit currents and relay settings for different transformer configurations, including delta-wye transformers. Thermal and mechanical withstand curves for different transformer categories are also presented.
modeling and simulation of a dynamic voltage restorervinay kumar mali
This document discusses the Dynamic Voltage Restorer (DVR), a custom power device used to mitigate voltage sags and swells in power distribution networks. It introduces the DVR and explains that it employs solid state switches and voltage source converters to inject voltage and restore the load side voltage during disturbances. The document then provides details on the typical configuration of a DVR, including its injection transformer, harmonic filter, voltage source converter, DC charging circuit, and control system. It also describes the different operating modes of a DVR and presents simulation results demonstrating the DVR's effectiveness in compensating for a three-phase fault.
This document provides a quick start guide for the FED-C Series AC drive. It includes information on safety, wiring, the operating panel, quick setup, standard parameters, troubleshooting, and revision history. The guide contains basic instructions to get started with installation and configuration of the AC drive.
Fed e-quick-start-manual-bientanfuji-dienhathe.comDien Ha The
This quick start guide provides instructions for setting up and operating an inverter. It begins with an overview of product information, including nameplate details and specifications. It then covers wiring, including diagrams for 3-phase and single-phase power supply types. Terminal functions are described for the main circuit and control circuit. The guide presents a timing diagram for the control logic and acceleration/deceleration profiles. It concludes with a step-by-step setup process, including getting familiar with the keypad, setting motor parameters, checking rotation direction, and setting function codes for features like the startup frequency and DC injection braking.
Bảng giá LS 2019 - Bảng giá mới sẽ áp dụng từ ngày 20.0.2019
Để cập nhật các bảng giá mới lĩnh vực thiết bị điện Công
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- Monitor the GOT screen from a remote location.
- Switch screens and operate touch switches.
Control:
- Monitor and operate the GOT from a remote location.
- Switch screens, operate touch switches, change settings, and more.
Number of
simultaneous
connections
1 client
Multiple clients✽1
Screen
switching
Not possible
Possible✽2
Client OS
Windows, Linux, macOS, Android, iOS
Windows, Linux, macOS, Android, iOS
Client software
- Web browser
- Viewer software
- Web browser
- VNC client software✽3
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Literature Review Basics and Understanding Reference Management.pptxDr Ramhari Poudyal
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Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
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Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
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Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
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The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
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Catalog mikro mikro mu2300-user-dienhathe.vn
1. User's
Manual VoltageProtectionRelay
User's
Manual
Features
• Low-set undervoltage stage with definite time or inverse time
• High-set undervoltage stage with definite time
• Low-set overvoltage stage with definite time or inverse time
• High-set overvoltage stage with definite time
• Negative sequence overvoltage protection
• Neutral displacement/ residual overvoltage protection
• Multi-function isolated digital input
• Fault data and event code recording
• Five programmable voltage-free output contacts
• Isolated RS485 Modbus-RTU communication
2. Table of Contents Page
1
For continuous product development, we reserve the right to supply
equipment which may vary from that described in this manual.
1. Introduction
2. Description of Operation
3. Display
4. Key Button Input
5. Programming
6. Soft Switches
7. Connection Diagram & Terminal Connection
8. Case Dimension
9. Technical Data
10. Test and Standards
11. Appendix A
12. Appendix B
13. Appendix C
2
3
12
22
24
27
52
58
59
61
62
63
64
3. 2
Features
1. Introduction
The MU2300 voltage protection relay is a microprocessor based
numerical relay intended for the voltage protection in electrical
distribution network. It can also be used for generators, motors and
transformer protection.
A fully digital user interface with bright seven-segment display and
indicators provides a very user friendly access to all the measurements,
user parameters and records.
MU2300 uses a digital filter to extract the fundamental voltage
waveforms for the three phases, phase-to-phase voltage or phase-to-
neutral voltage, for the operation of the protection elements. Such
protection elements are undervoltage low-set and high-set; overvoltage
low-set and high-set; negative sequence overvoltage low-set; residual
overvoltage low-set.
Besides being operated from the front panel of MU2300, this relay can
also be accessed when connected to a networked system through its
isolated RS485 Modbus-RTU communication interface.
• Low-set undervoltage stage with definite-time or inverse time
• High-set undervoltage stage with definite-time
• Low-set overvoltage stage with definite-time or inverse time
• High-set overvoltage stage with definite-time
• Negative sequence overvoltage protection
• Neutral displacement/ residual overvoltage protection
• Multi-function isolated digital input
• Fault data and event code recording
• Five programmable voltage-free output contacts
• Isolated RS485 Modbus-RTU communication
4. 3
2. Description of Operation
MU2300 is equipped with 3 accurate and independent voltage inputs
connected to the voltage transformers of the object to be protected. It
continuously monitors these voltage inputs’ fundamental frequency
components for the occurrence of faults. On detection of a fault, the relay
will start and then operated the trip output which is connected to the
circuit breaker or indicator. The phase-to-phase voltage, phase-to-neutral
voltage, negative sequence voltage and the residual voltage, measured at
the moment of tripping, will be recorded in the memories of the relay.
The relay has four different voltage transformer (VT) configurations.
Depending on the configuration chosen, the input voltages can be phase-
to-phase voltages or phase-to-neutral voltages. If the inputs are phase-to-
phase voltages, the protection setting is based on the phase-to-phase
voltages. However, if the configuration chosen is for phase-to-neutral
input voltages, the protection setting will then be based on the phase-to-
phase voltages and the derived phase-to-phase voltages are for
measurements only.
2.1 Undervoltage Elements (27)
The MU2300 has two stages for undervoltage protection, namely the low-
set undervoltage element and high-set undervoltage element.
When the voltage values fall below the set low-set undervoltage value,
the low-set undervoltage element will start and deliver a start signal to the
contact output (if assigned) and the front panel START indicator. After a
pre-set delay time, determined by the user’s selection between definite-
time and inverse time characteristic, the undervoltage element delivers a
trip signal to the contact output (if assigned) and the front panel TRIP
indicator. Similarly, the high-set undervoltage element will start and then
deliver a trip signal to the contact output (if assigned) and the front panel
indicators if the voltage falls below the set high-set undervoltage value
for duration longer than the high-set definite time.
The low-set and high-set elements can be selectively blocked by the
digital input if the appropriate switch setting in Soft Switch 9A and Soft
Switch 9B are set. The high-set stage can also be set out of operation by
Soft Switch 8.
5. 4
When the relay is first powered on without any input voltages connected
to the VTs, the undervoltage elements are temporary disabled. The
undervoltage elements will be activated once any of the input voltages
exceeded 10V. To ensure that the undervoltage protection elements will
not trip the relay when the voltage inputs are energised, the delay time
should be set sufficiently long or the undervoltage elements are set to be
temporary blocked by the digital input.
2.1.1 Inverse time delay characteristic
The inverse characteristic for undervoltage U<, is defined by the
following equation:
TMS
t =
1 - V
Vs
where:
t = operating time in seconds
TMS = time multiplier setting
V = applied input voltage
Vs = relay setting voltage
NOTE: this equation is valid for Vs > V
6. 5
1
10
100
1000
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
TMS=1
TMS=5
TMS=3
TMS=10
TMS=8
Applied voltage/relay setting voltage
Operatingtime(sec)
Undervoltage Characteristic
Figure 1: Inverse time curves for the undervoltage element “U<”
7. 6
2.2 Overvoltage Elements (59)
The MU2300 has two stages for overvoltage protection, namely the low-
set overvoltage element and high-set overvoltage element.
When the voltage values rise above the set low-set overvoltage value, the
low-set overvoltage element will start and deliver a start signal to the
contact output (if assigned) and the front panel START indicator. After a
pre-set delay time, determined by the user’s selection between definite-
time and inverse time characteristic, the overvoltage element delivers a
trip signal to the contact output (if assigned) and the front panel TRIP
indicator. Similarly, the high-set overvoltage element will start and then
deliver a trip signal to the contact output (if assigned) and the front panel
indicators if the voltage values rise above the set high-set overvoltage
value for duration longer than the high-set definite time.
The low-set and high-set elements can be selectively blocked by the
digital input if the appropriate switch settings in Soft Switch 9A and Soft
Switch 9B are set. The high-set stage can also be set out of operation by
Soft Switch 8.
2.2.1 Inverse time delay characteristic
The inverse characteristic for overvoltage U>, is defined by the following
equation:
t = TMS
V - 1
Vs
where:
t = operating time in seconds
TMS = time multiplier setting
V = applied input voltage
Vs = relay setting voltage
NOTE: this equation is valid for V > Vs
|
8. 7
0.01
0.1
1
10
100
1000
0 2 4 6 8 10 12 14 16 18 20
Applied voltage input/relay setting voltage
Operatingtime(sec)
TMS=1
TMS=8
TMS=10
TMS=5
TMS=3
Overvoltage Characteristic
Figure 2: Inverse time curves for the overvoltage element “U>”
9. 8
2.3 Negative Sequence Overvoltage Element (47)
For negative sequence overvoltage on MU2300, there is only low-set
element. The negative sequence voltage is derived from the three phase-
to-neutral voltages measured from the voltage inputs if the relay is
configured in Soft Switch A to measure the phase-to-neutral voltages. If
the relay is configured in Soft Switch A to measure the phase-to-phase
voltages, the negative sequence voltage is derived from the phase-to-
phase voltage.
When the negative sequence voltage value rises above the set low-set
negative sequence value, the negative sequence low-set overvoltage
element will start and deliver a start signal to the contact output (if
assigned) and the front panel START indicator. After a pre-set delay time
determined by the user’s selection between definite-time and inverse time
the negative sequence overvoltage element delivers a trip signal to the
contact output (if assigned) and the front panel TRIP indicator.
The low-set element can be selectively blocked by the digital input if the
appropriate switch settings in Soft Switch 9A and Soft Switch 9B are set
accordingly.
2.3.1 Inverse time delay characteristic
The inverse characteristic for negative sequence overvoltage U2>,is
defined by the following equation:
TMS
t =
V - 1
Vs
where:
t = operating time in seconds
TMS = time multiplier setting
V = calculated negative sequence voltage
Vs = relay setting voltage
NOTE: this equation is valid for V > Vs
|
10. 9
0.01
0.1
1
10
100
1000
0 2 4 6 8 10 12 14 16 18 20
Operatingtime(sec)
TMS=1
TMS=8
TMS=10
TMS=5
TMS=3
Figure 3: Inverse time curves for the overvoltage element “U2>”
Negative sequence overvoltage characteristic
Derived negative sequence overvoltage/relay setting voltage
11. 10
2.4.1 Inverse time delay characteristic
The inverse characteristic for residual overvoltage U0>, is defined by the
following equation:
TMS
t =
V - 1
Vs
where:
t = operating time in seconds
TMS = time multiplier setting
V = applied or derived residual input voltage
Vs = relay setting voltage
NOTE: this equation is valid for V > Vs
2.4 Neutral displacement /Residual Overvoltage (59N)
For residual overvoltage on MU2300, there is only low-set element. The
residual voltage is either derived from the three phase-to-neutral voltage
measurements of the voltage inputs or is measured directly from the
residual voltage transformer depending on the setting of Soft Switch A. If
the relay is configured in Soft Switch A to measures the phase-to-phase
voltages, the residual voltage must be measured by the residual voltage
transformer.
When the residual overvoltage value rises above the set low-set residual
overvoltage value, the low-set residual overvoltage element will start and
deliver a start signal to the contact output (if assigned) and the front panel
START indicator. After a pre-set delay time, determined by the user’s
selection between definite-time and inverse time characteristic, the
residual overvoltage element delivers a trip signal to the contact output (if
assigned) and the front panel TRIP indicator.
The low-set element can be selectively blocked by the digital input if the
appropriate switch settings in Soft Switch 9A and Soft Switch 9B are set
accordingly.
12. 11
0.01
0.1
1
10
100
1000
0 2 4 6 8 10 12 14 16 18 20
Operatingtime(sec)
TMS=1
TMS=8
TMS=10
TMS=5
TMS=3
Figure 4: Inverse time curves for the overvoltage element “U0>”
Residual overvoltage characteristic
Applied or derived residual voltage input/relay setting voltage
13. 12
3. Display
a)
b)
c)
3.1 Indicators
This is the power indicator. It shows the presence of auxiliary power
supply to the MU2300 relay.
This indicator lights up when any or all of the protection elements,
namely, undervoltage protection, overvoltage protection, negative
sequence overvoltage and residual overvoltage elements are started
(pick-up).
This indicator lights up when any or all of the protection elements,
namely, undervoltage protection, overvoltage protection, negative
sequence overvoltage and residual overvoltage elements are started
(pick-up) due to fault conditions and subsequently tripped due to the
sustained fault condition.
14. 13
e)
Number Value
Number Value
U12/ U1P
d) Digit display
The two formats of the display are as shown below:
The “Number” is for displaying the item selected and the “Value” is
to show the corresponding parameter associated with the item
“Number” selected.
When this indicator is lighted, the digit display is showing the value
of either U1 phase-to-neutral voltage or U12 phase-to-phase voltage.
When the phase-to-neutral voltage is shown, the “Number” field of
the digit display shows an alphabet “P” whereas when phase-to-
phase voltage is shown, the “Number” field displays an alphabet
“L”.
This indicator blinks when the undervoltage or overvoltage
protection element corresponding to U1 or U12 pick-up or tripped.
15. 14
f)
g)
h)
i)
j)
k)
U23/U2P
U31/U3P
U0
U2
Record
Event
Similar to item e) above, this indicator shows the U2 phase-to-
neutral voltage or U23 phase-to-phase voltage.
Similar to item e) above, this indicator shows the U3 phase-to-
neutral voltage or U31 phase-to-phase voltage.
When this indicator is lighted, the digit display shows the residual
voltage. It blinks when the corresponding protection element pick-
up or trip.
When this indicator is lighted, the digit display shows the negative
sequence voltage. It blinks when the corresponding protection
element pick-up or trip.
This indicator will light up simultaneously with either U12/U1P,
U23/U2P, U31/U3P, U0, or U2. When lighted, the digit display is
showing the previously recorded voltages at then moment when
MU2300 trips. There are nine records available and each can be
viewed at by pressing the DOWN key. Record number 1 is the latest
record.
When this indicator is lighted, the digit display is showing the
recorded event code. There are 60 numbers of events available and
16. 15
l)
m)
n)
o)
U<
tU<
U<<
tU<<
all the recorded events will be cleared when the auxiliary power
supply to MU2300 is disconnected. The event code is in Appendix
C.
All event registered will be displayed one-by-one automatically if
the relay is left untouched in this mode of for about 20 seconds.
When this indicator is lighted, the digit display shows the low-set
undervoltage setting. The “Number” field of the digit display
indicates whether it is a Group A or Group B setting. The “Value”
field shows the setting voltage.
When this indicator is lighted, depending on the user setting on Soft
Switch 7, the digit display will either show the TMS or the definite
time delay for low-set undervoltage. The “Number” field of the digit
display shows whether it is a Group A or Group B setting.
When this indicator is lighted, the digit display shows the high-set
undervoltage setting. The “Number” field of the digit display
indicates whether it is a Group A or Group B setting. The “Value”
field shows the setting voltage.
When this indicator is lighted, the digit display shows the high-set
definite time delay for undervoltage. The “Number” field of the
digit display shows whether it is a Group A or Group B setting.
17. 16
p)
q)
r)
U>
tU>
U>>
tU>>
U2>
s)
t)
When this indicator is lighted, the digit display shows the low-set
overvoltage setting. The “Number” field of the digit display
indicates whether it is a Group A or Group B setting. The “Value”
field shows the setting voltage.
When this indicator is lighted, depending on the user setting on Soft
Switch 7, the digit display will either show the TMS or the definite
time delay for low-set overvoltage. The “Number” field of the digit
display shows whether it is a Group A or Group B setting.
When this indicator is lighted, the digit display shows the high-set
overvoltage setting. The “Number” field of the digit display
indicates whether it is a Group A or Group B setting. The “Value”
field shows the setting voltage.
When this indicator is lighted, the digit display shows the high-set
definite time delay for overvoltage. The “Number” field of the digit
display shows whether it is a Group A or Group B setting.
When this indicator is lighted, the digit display shows the low-set
negative sequence overvoltage setting. The “Number” field of the
digit display indicates whether it is a Group A or Group B setting.
The “Value” field shows the setting for the negative sequence
overvoltage.
18. 17
tU2>
U0>
tU0>
INPUT
u)
v)
w)
x)
When this indicator is lighted, depending on the user setting on Soft
Switch 7, the digit display will either show the TMS multiplier or
the definite time delay for low-set negative sequence overvoltage.
The “Number” field of the digit display shows whether it is a Group
A or Group B setting.
When this indicator is lighted, the digit display shows the low-set
residual overvoltage setting. The “Number” field of the digit display
indicates whether it is a Group A or Group B setting. The “Value”
field shows the setting for the residual overvoltage.
When this indicator is lighted, depending on the user setting on Soft
Switch 7, the digit display will either show the TMS or the definite
time delay for low-set residual overvoltage. The “Number” field of
the digit display shows whether it is a Group A or Group B setting.
This indicator reflects the status of the external digital input
regardless of the soft switches setting. It is a direct mimic of the
status of the input. When voltage is applied to the digital input, the
indicator will turn on.
19. 18
3.2 Normal Status Display
Under normal operating condition where non of the protection elements
have operated and the key are not pressed, all the indicators will be
switched off except the following:
a)
The AUX indicator shows that there is power supply to the relay.
b)
AUX
Blinking
The decimal point on the left-most digit blinks to indicate that the
relay is functioning normally.
20. 19
3.3 Start Status Display
The Start indicator lights up when any of the protection elements pick-up
(started). Other indicators also lighted simultaneously to show which
protection elements have started.
START
U12/U1P
U23/U2P
U31/U3P
a) The Start indicator light up to indicate that the relay pick up.
b) One or more of the following indicators blink to indicate the sources
of the pick-up.
U0
U2
U<
U<<
U>
U>>
U2>
U0>
c) One or more of the following indicators blink to indicate that the
protection elements that have pick-up.
21. 20
TRIP
U12/U1P
U23/U2P
3.4 Trip Status Display
The Trip indicator lights up when any of the protection elements trip.
Other indicators also lighted simultaneously to show which protection
elements have tripped.
a) The Trip indicator light up to indicates that the relay has tripped. It
stays steady when the condition for tripping has not been removed.
Otherwise, the indicator blinks.
b) One of the following indicators blink to indicate the sources of the
pick-up.
U31/U3P
U0
U2
U<
U<<
U>
U>>
U2>
U0>
c) One of the following indicators blink to indicate that the protection
elements that have pick-up.
22. 21
Number Value
d) The digit display shows the value of the trip voltage at the moment
of tripping. The “Number” field of the digit display may indicate
an alphabet “L” or “P” which denote phase-to-phase voltage or
phase-to-neutral voltage respectively.
When the voltage value is not available, the display will show “-E-“
sign on the “Value” field.
23. 22
START
U12
U1P
U23
U2P
U31
U3P
U0
U2
U12/U1P Record
U23/U2P Record
U31/U3P Record
U0 Record U<
tU<
U<<
tU<<
U>
tU>
U>>
tU>>
U2>
tU2>
U0>
U2 Record Event
tU0>
Other U12/U1P Record
Other U23/U2P Record
Other U31/U3P Record
Other U0 Record
Other U2 Record
*
*
*
*
*
* Use DOWN key
4. Key Button Input
a) RESET/STEP key
This key has two functions:
I. To reset the relay when the relay is tripped.
II. To select the items to be view at such as all the input voltages
and setting parameters.
The sequence of selection when the RESET/STEP key is pressed is
as shown below. Pressing the UP key will reverse the sequence.
24. 23
b) The PROGRAM key
Item to be programmed is first selected by the RESET/STEP key.
Then pressing the PROGRAM key set the relay into programming
mode for the selected item. Value of the selected item can then be
changed by the UP or DOWN key. Pressing the PROGRAM key
again while in the programming mode will cause the relay to exit
from the programming mode with the new value saved into the non-
volatile memory.
The indicator adjacent to the PROGRAM key will light up when in
programming mode.
c) The UP and DOWN keys
These keys are for changing the value of the selected item while in
programming mode. Under non-programming mode, the UP key is
used as the reverse STEP key and the DOWN key is used for
changing the record number while in the recorded data retrieval
mode.
d) The SWITCH key
Press this key to step through all the soft switches.
25. 24
5. Programming
5.1 To program the setting for U <, U <<, U >, U >>, U0 >,
and U2 >
Step 1
Select the required item by stepping through all the items using the
RESET/STEP key or the UP key. The corresponding light for the selected
item will be lighted.
Step 2
Press the PROGRAM key once. The indicator for the selected item will
blink and the indicator for PROGRAM key lights up to indicate that the
system is now in programming mode.
Step 3
Use the UP or DOWN key to select the desire value. Hold down the key
until the desired value appears.
26. 25
Step 4
To save the changed value, press the PROGRAM key again. The
indicator for the PROGRAM key will turn off and the blinking indicator
for the selected item stop blinking.
To abort without saving the selected setting, press the RESET/STEP key.
Programming is prohibited when the relay is started or tripped.
27. 26
5.2 To program the soft switches
Step1
Press the SWITCH key until the desired switch number appears on the
display.
Step 2
Press the PROGRAM key to enter into programming mode. The switch
number on the “Number” field of the digit display blinks to indicate that
the system is now in soft switch programming mode. The indicators for
the PROGRAM and the SWITCH keys also light up.
Step 3
Use the UP or DOWN key for changing the soft switch setting. Hold
down the key until the desired value appears.
Step 4
Press the PROGRAM key again to save the changed setting. The switch
number will stop blinking and the indicator for the PROGRAM key will
be switched off.
To abort without saving the change, press the SWITCH key or RESET/
STEP key. Programming is prohibited when the relay is started or tripped.
28. 27
Switch
Number
Switch
Value
Digit2 Digit1
For contact output R1
6 Soft Switches
Soft switches are used to configure the features of the relay and the
functional characteristic of the relays outputs.
S1A.7 S1A.6 S1A.5 S1A.4 S1A.3 S1A.2 S1A.1 S1A.0
Default setting 1 0 1 0 1 0 1 0
Default setting –
hexadecimal
value
A A
User’s setting
User’s setting –
hexadecimal
value
Switch
Number
Switch
Value
Digit2 Digit1
or
For contact output R2
S2A.7 S2A.6 S2A.5 S1A.4 S2A.3 S1A.2 S2A.1 S2A.0
Default setting 0 1 0 1 0 1 0 1
Default setting –
hexadecimal value
5 5
User’s setting
User’s setting –
hexadecimal value
Soft Switch 1A to Soft Switch 5A
These switches are for configuring the output contacts R1 to R5 in
relation to low-set undervoltage U<, high-set undervoltage U<<, low-set
overvoltage U> and high-set overvoltage U>>.
29. 28
For contact output R3
For contact output R4
For contact output R5
S3A.7 S3A.6 S3A.5 S3A.4 S3A.3 S3A.2 S3A.1 S3A.0
Default setting 0 0 0 0 0 0 0 0
Default setting –
hexadecimal value
0 0
User’s setting
User’s setting –
hexadecimal value
S4A.7 S4A.6 S4A.5 S4A.4 S4A.3 S4A.2 S4A.1 S4A.0
Default setting 0 0 0 0 0 0 0 0
Default setting –
hexadecimal value
0 0
User’s setting
User’s setting –
hexadecimal value
S5A.7 S5A.6 S5A.5 S5A.4 S5A.3 S5A.2 S5A.1 S5A.0
Default setting 0 0 0 0 0 0 0 0
Default setting –
hexadecimal value
0 0
User’s setting
User’s setting –
hexadecimal value
SxA.0
This switch element is to connect/disconnect the corresponding contact
output Rx to low-set undervoltage (U <) START signal.
1 = Rx is connected to low-set undervoltage START signal.
0 = Rx is disconnected to low-set undervoltage START signal
SxA.1
This switch element is to connect/disconnect the corresponding contact
output Rx to low-set undervoltage (U <) TRIP signal.
1 = Rx is connected to low-set undervoltage TRIP signal.
0 = Rx is disconnected to low-set undervoltage TRIP signal.
30. 29
SxA.2
This switch element is to connect/disconnect the corresponding contact
output Rx to high-set undervoltage (U <<) START signal.
1 = Rx is connected to high-set undervoltage START signal.
0 = Rx is disconnected to high-set undervoltage START signal.
SxA.3
This switch element is to connect/disconnect the corresponding contact
output Rx to high-set undervoltage (U <<) TRIP signal.
1 = Rx is connected to high-set undervoltage TRIP signal.
0 = Rx is disconnected to high-set undervoltage sTRIP signal.
SxA.4
This switch element is to connect/disconnect the corresponding contact
output Rx to low-set overvoltage (U >) START signal.
1 = Rx is connected to low-set overvoltage START signal.
0 = Rx is disconnected to low-set overvoltage START signal.
SxA.5
This switch element is to connect/disconnect the corresponding contact
output Rx to low-set overvoltage (U >) TRIP signal.
1 = Rx is connected to low-set overvoltage TRIP signal.
0 = Rx is disconnected to low-set overvoltage TRIP signal.
SxA.6
This switch element is to connect/disconnect the corresponding contact
output Rx to high-set overvoltage (U >>) START signal.
1 = Rx is connected to high-set overvoltage start signal.
0 = Rx is disconnected to high-set overvoltage start signal.
SxA.7
This switch element is to connect/disconnect the corresponding contact
output Rx to high-set overvoltage (U >>) TRIP signal.
1 = Rx is connected to high-set overvoltage trip signal.
0 = Rx is disconnected to low-set overvoltage trip signal.
31. 30
Soft Switch 1B to Soft Switch 5B
These switches are for configuring the output contacts R1 to R5 in
relation to low-set negative sequence overvoltage U2> and low-set
residual overvoltage U0.
For contact output R1
For contact output R2
S1B.7 S1B.6 S1B.5 S1B.4 S1B.3 S1B.2 S1B.1 S1B.0
Default setting 0 0 1 0 0 0 1 0
Default setting –
hexadecimal
value
2 2
User’s setting
User’s setting –
hexadecimal
value
S2B.7 S2B.6 S2B.5 S2B.4 S2B.3 S2B.2 S2B.1 S2B.0
Default setting 0 0 0 1 0 0 0 1
Default setting –
hexadecimal
value
1 1
User’s setting
User’s setting –
hexadecimal
value
For contact output R3
S3B.7 S3B.6 S3B.5 S3B.4 S3B.3 S3B.2 S3B.1 S3B.0
Default setting 0 0 0 0 0 0 0 0
Default setting –
hexadecimal
value
0 0
User’s setting
User’s setting –
hexadecimal
value
32. 31
For contact output R4
For contact output R5
S4B.7 S4B.6 S4B.5 S4B.4 S4B.3 S4B.2 S4B.1 S4B.0
Default setting 0 0 0 0 0 0 0 0
Default setting –
hexadecimal
value
0 0
User’s setting
User’s setting –
hexadecimal
value
S5B.7 S5B.6 S5B.5 S5B.4 S5B.3 S5B.2 S5B.1 S5B.0
Default setting 0 0 0 0 0 0 0 0
Default setting –
hexadecimal
value
0 0
User’s setting
User’s setting –
hexadecimal
value
SxB.0
This switch element is to connect/disconnect the corresponding contact
output Rx to low-set residual overvoltage (U0 >) START signal.
1 = Rx is connected to low-set residual overvoltage start signal
0 = Rx is disconnected to low-set residual overvoltage start
signal.
SxB.1
This switch element is to connect/disconnect the corresponding contact
output Rx to low-set residual overvoltage (U0 >) TRIP signal.
1 = Rx is connected to low-set residual overvoltage
Rx is disconnected to low-set residual overvoltage
signal.
SxB.2
Not used.
SxB.3
Not used.
0 =
33. 32
0 =
SxB.4
This switch element is to connect/disconnect the corresponding contact
output Rx to low-set negative sequence overvoltage (U2 >) START signal.
1 = Rx is connected to low-set negative sequence overvoltage
start signal.
Rx is disconnected to low-set negative sequence
overvoltage start signal
SxB.5
This switch element is to connect/disconnect the corresponding contact
output Rx to low-set negative sequence overvoltage (U2 >) TRIP signal.
1 = Rx is connected to low-set negative sequence overvoltage
trip signal.
0 = Rx is disconnected to low-set negative sequence overvoltage
trip signal.
SxB.6
Not used.
SxB.7
Not used.
34. 33
S6A.7 S6A.6 S6A.5 S6A.4 S6A.3 S6A.2 S6A.1 S6A.0
Default setting 0 0 0 0 0 0 0 0
Default setting –
hexadecimal
value
0 0
User’s setting
User’s setting –
hexadecimal
value
Soft Switch 6A
This switch is for setting the characteristic of output contacts R1 to R5 in
relation to the START signal issued by the protection elements assigned
to them by Switch1A to Switch5A or Switch1B to Switch5B above.
These output contacts can be configured to be auto-reset type or manual-
reset type. For auto-reset type, the output contacts will automatically
return to the normal state upon removal of the condition which triggers
the START signal. In the case of manual-reset type, the output contacts
will latch on regardless of the condition which triggers the START signal
until the relay is manually reset by the user by pressing the RESET/STEP
key.
Switch elements S6A.5 and S6A.6 are for configuring the START signals
due to low-set/high-set undervoltage elements and low-set/high-set
overvoltage elements respectively such that condition for a valid START
signal to be effected on the output contacts R1 to R5 (if configured) can
either be from any one phase or from the three phases which occur
concurrently.
S6A.0
This switch element configures the characteristic of output contact R1 in
relation to START signal.
1 = Manual reset for R1.
0 = Auto reset for R1.
S6A.1
This switch element configures the characteristic of output contact R2 in
relation to START signal.
1 = Manual reset for R2.
0 = Auto reset for R2.
35. 34
S6A.2
This switch element configures the characteristic of output contact R3 in
relation to START signal.
1 = Manual reset for R3.
0 = Auto reset for R3.
S6A.3
This switch element configures the characteristic of output contact R4 in
relation to START signal.
1 = Manual reset for R4.
0 = Auto reset for R4.
S6A.4
This switch element configures the characteristic of output contact R5 in
relation to START signal.
1 = Manual reset for R5.
0 = Auto reset for R5.
S6A.5
This switch element configures the START signal from low-set or high-
set undervoltage elements for R1 to R5 above.
1 =All three phases of the low-set or high-set undervoltage
elements must start concurrently for a valid START signal
to be delivered to R1 to R5.
0 = Any single or more phases low-set or high-set undervoltage
elements can trigger a valid START signal to R1 to R5.
S6A.6
This switch element configures the START signal from low-set or high-
set overvoltage elements for R1 to R5 above.
1 =All three phases of the low-set or high-set overvoltage
elements must start concurrently for a valid START signal
to be delivered to R1 to R5.
0 =Any single or more phases low-set or high-set overvoltage
elements can trigger a valid START signal to R1 to R5.
S6A.7
Not used.
36. 35
S6B.7 S6B.6 S6B.5 S6B.4 S6B.3 S6B.2 S6B.1 S6B.0
Default setting 0 0 0 0 0 0 0 0
Default setting –
hexadecimal
value
0 0
User’s setting
User’s setting –
hexadecimal
value
Soft Switch 6B
This switch is for setting the characteristic of output contacts R1 to R5 in
relation to the TRIP signal issued by the protection elements assigned to
them by Switch1A to Switch5A or Switch1B to Switch5B above. These
output contacts can be configured to be auto-reset type or manual-reset
type. For auto-reset type, the output contacts will automatically return to
the normal state upon removal of the condition which triggers the TRIP
signal. In the case of manual-reset type, the output contacts will latch on
regardless of the condition which triggers the TRIP signal until the relay
is manually reset by the user by pressing the RESET/STEP key.
Switch elements S6B.5 and S6B.6 are for configuring the TRIP signals
due to low-set/high-set undervoltage elements and low-set/high-set
overvoltage elements respectively such that condition for a valid TRIP
signal to be effected on the output contacts R1 to R5 (if configured) can
either be from any one phase or from the three phases which occur
concurrently.
S6B.0
This switch element configures the characteristic of output contact R1 in
relation to TRIP signal.
1 = Manual reset for R1.
0 = Auto reset for R1.
S6B.1
This switch element configures the characteristic of output contact R2 in
relation to TRIP signal.
1 = Manual reset for R2.
0 = Auto reset for R2.
37. 36
S6B.2
This switch element configures the characteristic of output contact R3 in
relation to TRIP signal.
1 = Manual reset for R3.
0 = Auto reset for R3.
S6B.3
This switch element configures the characteristic of output contact R4 in
relation to TRIP signal.
1 = Manual reset for R4.
0 = Auto reset for R4.
S6B.4
This switch element configures the characteristic of output contact R5 in
relation to TRIP signal.
1 = Manual reset for R5.
0 = Auto reset for R5.
S6B.5
This switch element configures the TRIP signal from low-set or high-set
undervoltage elements for R1 to R5 above.
1 =All three phases of the low-set or high-set undervoltage
elements must TRIP concurrently for a valid TRIP signal to
be delivered to R1 to R5.
0 =Any single or more phases low-set or high-set undervoltage
elements can trigger a valid TRIP signal to R1 to R5.
S6B.6
This switch element configures the TRIP signal from low-set or high-set
overvoltage elements for R1 to R5 above.
1 =All three phases of the low-set or high-set overvoltage
elements must TRIP concurrently for a valid TRIP signal to
be delivered to R1 to R5.
0 =Any single or more phases low-set or high-set overvoltage
elements can trigger a valid TRIP signal to R1 to R5.
S6B.7
Not used.
38. 37
S7.7 S7.6 S7.5 S7.4 S7.3 S7.2 S7.1 S7.0
Default setting 1 1 1 1 1 1 1 1
Default setting –
hexadecimal
value
F F
User’s setting
User’s setting –
hexadecimal
value
S7.0
Group A low-set undervoltage time delay setting.
1 = Inverse time
0 = Definite time
S7.1
Group A low-set overvoltage time delay setting.
1 = Inverse time
0 = Definite time
S7.2
Group A low-set negative sequence overvoltage time delay setting.
1 = Inverse time
0 = Definite time
(Group A)(Group B)
Soft Switch 7
This soft switch allows the user to choose between definite time setting
and inverse time setting for the low-set undervoltage, low-set over-
voltage, low-set negative sequence overvoltage and low-set residual
overvoltage.
There are two groups of settings available for the above protection
elements namely, Group A and Group B. All of the settings can be
individually set for either definite time or inverse time. Switch elements
S7.0 to S7.3 are for Group A settings and S7.4 to S7.7 are for Group B
settings.
39. 38
S7.3
Group A low-set residual overvoltage time delay setting.
1 = Inverse time
0 = Definite time
S7.4
Group B low-set undervoltage time delay setting.
1 = Inverse time
0 = Definite time
S7.5
Group B low-set overvoltage time delay setting.
1 = Inverse time
0 = Definite time
S7.6
Group B low-set negative sequence overvoltage time delay setting.
1 = Inverse time
0 = Definite time
S7.7
Group B low-set residual overvoltage time delay setting.
1 = Inverse time
0 = Definite time
40. 39
Soft Switch 8
This soft switch allows the user to enable or disable the high-set
undervoltage, high-set overvoltage, low-set residual overvoltage and low-
set negative sequence overvoltage for both Group A and Group B
S8.7 S8.6 S8.5 S8.4 S8.3 S8.2 S8.1 S8.0
Default setting 1 1 1 1 1 1 1 1
Default setting –
hexadecimal
value
F F
User’s setting
User’s setting –
hexadecimal
value
S8.0
For enabling Group A high-set undervoltage element.
1 = Enabled
0 = Disabled
S8.1
For enabling Group A high-set overvoltage element.
1 = Enabled
0 = Disabled
S8.2
For enabling Group A low-set residual overvoltage
1 = Enabled
0 = Disabled
S8.3
For enabling Group A low-set negative sequence overvoltage
1 = Enabled
0 = Disabled
(Group B) (Group A)
41. 40
S8.4
For enabling Group B high-set undervoltage element.
1 = Enabled
0 = Disabled
S8.5
For enabling Group B high-set overvoltage element.
1 = Enabled
0 = Disabled
S8.6
For enabling Group B low-set residual overvoltage
1 = Enabled
0 = Disabled
S8.7
For enabling Group A low-set negative sequence overvoltage
1 = Enabled
0 = Disabled
42. 41
Soft Switch 9A
This switch is for configuring the function of the digital input. Only one
selection is possible.
S9A.7 S9A.6 S9A.5 S9A.4 S9A.3 S9A.2 S9A.1 S9A.0
Default setting 0 0 0 0 1 0 0 0
Default setting –
hexadecimal
value
0 8
User’s setting
User’s setting –
hexadecimal
value
S9A.0
The input is configured for switching between Group A setting and Group
B setting.
1 = Selected.
0 = Not selected.
S9A.1
The input is configured as remote trip reset input.
1 = Selected.
0 = Not selected.
S9A.2
The input is configured as external tripping input source.
1 = Selected.
0 = Not selected.
S9A.3
The input is configured as blocking input.
1 = Selected.
0 = Not selected.
46. 45
SA.7 SA.6 SA.5 SA.4 SA.3 SA.2 SA.1 SA.0
Default setting 0 0 0 0 0 0 0 1
Default setting –
hexadecimal
value
0 1
User’s setting
User’s setting –
hexadecimal
value
Soft Switch A
This switch sets the voltage transformer (VT) configuration for MU2300.
There are 4 possible VT configurations as shown in Examples 1 to 4
under the “Connection Diagram & Terminal Connection” section. It is
important to choose the correct connection type failing which the wrong
voltages will be measured or derived by MU2300.
SA.0
This switch element is for selection of “3Vpn” configuration as shown in
Example 1. In this configuration, the measured voltages are the phase-to-
neutral voltage for the three phases. The phase-to-phase voltages and the
residual voltage are derived internally.
1 = selected
0 = Not selected
SA.1
This switch element is for selection of “3Vpn + Vo” configuration as
shown in Example 2. In this configuration, the measured voltages are the
phase-to-neutral voltage for the three phases and the residual overvoltage
The phase-to-phase voltages are derived internally.
1 = selected
0 = Not selected
47. 46
SA.2
This switch element is for selection of “3Vpp + Vo” configuration as
shown in Example 3. In this configuration, the measured voltages are the
phase-to-phase voltage for the three phases and the residual overvoltage.
The phase-to-neutral voltages are not available.
1 = selected
0 = Not selected
SA.3
This switch element is for selection of “2Vpp + Vo” configuration as
shown in Example 4. In this configuration, the measured voltages are the
2 phase-to-phase voltages and the residual overvoltage. The third phase-
to-phase voltage is derived internally and phase-to-neutral voltages are
not available.
1 = selected
0 = Not selected
SA.4
Not used.
SA.5
Not used.
SA.6
Not used.
SA.7
Not used.
48. 47
Soft Switch B
This soft switch selects the baud rate and data format of the serial
Modbus communication between the host computer (client) and the relay
MU2300 (server).
Digit 2 Digit 1
Default setting 4 7
User’s setting
Digit 1 is for selecting the communication baud rate.
Baud rate Value of Digit 1
300 1
600 2
1200 3
2400 4
4800 5
9600 6
19200 7
Digit 2 is for selecting the data format.
Data format Value of Digit 2
1 start bit, 8 data bits, no parity bit, 1 stop
bit
1
1 start bit, 8 data bits, no parity bit, 2 stop
bits
2
1 start bit, 8 data bits, odd parity bit, 1 stop
bit
3
1 start bit, 8 data bits, even parity bit, 1 stop
bit
4
49. 48
Soft Switch C
This soft switch is for setting the device unit number of MU2300 in a
Modbus communication network. The setting range for the device unit is
from 1 to 127 and it is displayed and set in hexadecimal format.
Example:
If the selected unit number is 42, then the equivalent hexadecimal number
is 2A. For conversation between hexadecimal number and decimal
number, please refer to Appendix B.
The default unit number is 1.
50. 49
Soft Switch D
This soft switch allows the user to either allow or disallow remote
programming or changing of the setting values of the MU2300 relay.
Once enabled, the remote host computer (client) is able to read and
modify all the settings and parameters of the relay through the serial
communication channel using Modbus protocol. Otherwise, only reading
of the setting values and relay parameters is possible.
1 – Remote programming is enabled.
0 – Remote programming is disabled.
The default setting for MU2300 is remote programming disabled (0).
51. 50
Soft Switch E
This switch allows the contacts output of MU2300 to be manually and
individually switched on. This is very useful during testing and
commissioning of the relay.
Description Display Value
Off all contact outputs 00
On contact output R1 only 01
On contact output R2 only 02
On contact output R3 only 03
On contact output R4 only 04
On contact output R5 only 05
Steps to turn on a contact:
1. Select soft switch E by pressing the SWITCH key.
2. Press PROGRAM key.
3. Press UP or DOWN key to select the desired contact.
4. Press SWITCH or PROGRAM key to exit.
Note that all contacts will be switched OFF after the above test regardless
of the previous status of the contact outputs prior to the test.
52. 51
Soft Switch F
This switch is for selecting the operation frequency of the electrical
system to be protected. It is crucial that the correct frequency of operation
be selected and failure to do so will give rise to wrong voltage
measurements.
0 – 50Hz system frequency
1 – 60Hz system frequency
54. Connection terminal
1
2
3
4
5
6
7
8
9
10
11
12
13 External digital input
14 External digital input
15 to 21 Not used
22 Termination resistor (for RS485)
23 RS485 negative terminal
24 RS485 positive terminal
25 Communication cable shield
26,27 Output contact R5
28 N.C. contact for IRF
29 N.O. contact for IRF
30 COMMON contact for IRF
31 Casing earth terminal
32 Auxiliary supply input (No polarity)
33 Auxiliary supply input (No polarity)
34 N.C. contact for tripping contact R1
35 N.O. contact for tripping contact R1
36 COMMON contact for contact R1
37,38 Output contact R2
39,40 Output contact R3
41,42 Output contact R4
53
Not used
Not used
Not used
Not used
VT input for residual voltage
VT input for residual voltage
VT input for phase A
VT input for phase A
VT input for phase B
VT input for phase B
VT input for phase C
VT input for phase C
Description of Function
60. 59
9. Technical Data
i) Measuring Inputs
Rated Voltage Input * 57-130V
Frequency 50Hz or 60Hz
ii) Rated Auxiliary supply voltage
Model MU2300-150D 24~150V DC
Model MU2300-240AD 85~265V AC
110~340V DC
iii) Power Consumption 6-10VA typical (AC
auxiliary voltage)
5-9W typical(DC auxiliary
voltage)
iv) External Digital Input 80~250V AC/DC
*Maximum input voltage is 260V
Output
i) All contacts
Rated voltage 250V AC
Continuous carry 5A AC or DC
Make and carry for 0.2 sec 30A AC or DC
Expected electrical life (min
operation)
5,000,000
Operating time Maximum 15ms
Undervoltage element
i) Low set
Low set setting, U< 5-130V
Low set definite time, tU< 0-600s
Time multiplier, TMS 0.5-100
ii) High set
High set setting, U<< 5-130V
High set definite time, tU<< 0-600s
iii) Hysteresis 105%
Input
61. 60
Overvoltage element
i) Low set
Low set setting, U> 5-200V
Low set definite time, tU> 0-600s
ii) High set
High set setting, U>> 5-260V
High set definite time, tU>> 0-600s
iii) Time multiplier, TMS 0.5-100
Negative sequence overvoltage element
i) Negetive sequence overvoltage
setting, U2>
5-200V
ii) Time multiplier, TMS 0.5-100
iii) Negative sequence overvoltage
definite time, tU2>
0-600s
Residual overvoltage element
i) Residual overvoltage setting, U0> 0.5-130V
ii) Time multiplier, TMS 0.5-100
iii) Residual overvoltage definite time
tU0>
0-600s
Communication
i) Hardware interface Isolated RS485
ii) Protocol Modbus-RTU
iii) Baud rate 300,600,1200,2400,4800,
9600,19200
62. 61
10 Tests and Standards
High voltage dielectric withstand test. IEC60255-5 …... 2.0kV rms, 1 min
High voltage impulse test. IEC60255-5 ………….…….. 5kV, 1.2/50 s
Electrical fast transient. IEC61000-4-4,
Level 4, power supply inputs ………………………….... 4kV, 5/50ns
Electrical fast transient. IEC61000-4-4,
Level 4, other inputs …………..………………………... 2kV, 5/50ns
Electrostatic discharge. IEC61000-4-2
Class III, air discharge ……………………………….…. 8kV
Electrostatic discharge. IEC61000-4-2
Class III, contact discharge .………………….……….... 6kV
Enclosure protection when panel mounted ……............ IP54
u
63. Binary to hexadecimal- conversion table: -
Hexadecimal Binary
0 0000
1 0001
2 0010
3 0011
4 0100
5 0101
6 0110
7 0111
8 1000
9 1001
A 1010
B 1011
C 1100
D 1101
E 1110
F 1111
Decimal
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
62
11 Appendix A
65. 64
13 Appendix C
Event code:
Event code Description
00 U1P/U12 undervoltage U < start
01 U2P/U23 undervoltage U < start
02 U3P/U31 undervoltage U < start
03 U1P/U12 undervoltage U < trip
04 U2P/U23 undervoltage U < trip
05 U3P/U31 undervoltage U < trip
06 U1P/U12 undervoltage U << start
07 U2P/U23 undervoltage U << start
08 U3P/U31 undervoltage U << start
09 U1P/U12 undervoltage U << trip
10 U2P/U23 undervoltage U << trip
11 U3P/U31 undervoltage U << trip
40 U1P/U12 undervoltage U < start reset
41 U2P/U23 undervoltage U < start reset
42 U3P/U31 undervoltage U < start reset
43 U1P/U12 undervoltage U < trip reset
44 U2P/U23 undervoltage U < trip reset
45 U3P/U31 undervoltage U < trip reset
46 U1P/U12 undervoltage U << start reset
47 U2P/U23 undervoltage U << start reset
48 U3P/U31 undervoltage U << start reset
49 U1P/U12 undervoltage U << trip reset
50 U2P/U23 undervoltage U << trip reset
51 U3P/U31 undervoltage U << trip reset
12 U1P/U12 overvoltage U > start
13 U2P/U23 overvoltage U > start
14 U3P/U31 overvoltage U > start
15 U1P/U12 overvoltage U > trip
16 U2P/U23 overvoltage U > trip
17 U3P/U31 overvoltage U > trip
18 U1P/U12 overvoltage U >> start
66. 65
19 U2P/U23 overvoltage U >> start
20 U3P/U31 overvoltage U >> start
21 U1P/U12 overvoltage U >> trip
22 U2P/U23 overvoltage U >> trip
23 U3P/U31 overvoltage U >> trip
52 U1P/U12 overvoltage U > start reset
53 U2P/U23 overvoltage U > start reset
54 U3P/U31 overvoltage U > start reset
55 U1P/U12 overvoltage U > trip reset
56 U2P/U23 overvoltage U > trip reset
57 U3P/U31 overvoltage U > trip reset
58 U1P/U12 overvoltage U >> start reset
59 U2P/U23 overvoltage U >> start reset
60 U3P/U31 overvoltage U >> start reset
61 U1P/U12 overvoltage U >> trip reset
62 U2P/U23 overvoltage U >> trip reset
63 U3P/U31 overvoltage U >> trip reset
24 Negative sequence overvoltage U2 > start
25 Negative sequence overvoltage U2 > trip
64 Negative sequence overvoltage U2 > start reset
65 Negative sequence overvoltage U2 > trip reset
26 Residual overvoltage U0 > start
27 Residual overvoltage U0 > trip
66 Residual overvoltage U0 > start reset
67 Residual overvoltage U0 > trip reset
A0 R1 activated
A1 R1 reset
A2 R2 activated
A3 R2 reset
A4 R3 activated
A5 R3 reset
A6 R4 activated
A7 R4 reset
67. 66
A8 R5 activated
A9 R5 reset
B1 Digital input activated
B2 Digital input reset
E1 Tripped by external digital input
FE Relay is powered up
68. INDUSTRI TEKNOLOGI MIKRO BERHAD,
No. 1, Jalan TP 7/7, Sime UEP Industrial Park, 40400 Shah Alam, Selangor, Malaysia.
Tel: +603-5192 7155 Fax: +603-5192 7166 Website: www.itmikro.com
E-mail: sales@itmikro.com
MU2300-150806