The document provides information on the Relion 605 series REJ603 self-powered feeder protection relay. It includes 3 key points:
1. The REJ603 is a numerical feeder protection relay that receives power from current transformers, making it suitable for unmanned substations without auxiliary power. It provides non-directional overcurrent and earth fault protection.
2. The relay measures phase currents and calculates residual current. It has protection, measurement and monitoring functions including thermal overload protection. Event logging and disturbance recording are provided.
3. The relay has 4 current inputs, 1 optional binary input, and outputs include a trip output and 2 signaling outputs. It is designed for installation in ring main units
DESIGN AND DEVELOPMENT OF A LOW-COST MICROCONTROLLER BASED SINGLE PHASE WATER...ijistjournal
A microcontroller based advanced technique was designed and developed to protect the house hold appliances, such as water-pump from fluctuation of line voltage. This device was tested with upper and lower cutoff voltages set at ±10% of the normal supply voltage (220V, AC) and with an over-load current up to 10A. The current sensor’s output was monitored by the PIC12F675 microcontroller and used analog to digital protocol. A ‘C’ language program was developed to control the function of microcontroller, using PCWH compiler.
DESIGN AND DEVELOPMENT OF A LOW-COST MICROCONTROLLER BASED SINGLE PHASE WATER...ijistjournal
A microcontroller based advanced technique was designed and developed to protect the house hold appliances, such as water-pump from fluctuation of line voltage. This device was tested with upper and lower cutoff voltages set at ±10% of the normal supply voltage (220V, AC) and with an over-load current up to 10A. The current sensor’s output was monitored by the PIC12F675 microcontroller and used analog to digital protocol. A ‘C’ language program was developed to control the function of microcontroller, using PCWH compiler.
this is a complete summer training report on embedded sys_AVR. It aslo includes a project and its coding and other topics which are learnt in training.
final Year Projects, Final Year Projects in Chennai, Software Projects, Embedded Projects, Microcontrollers Projects, DSP Projects, VLSI Projects, Matlab Projects, Java Projects, .NET Projects, IEEE Projects, IEEE 2009 Projects, IEEE 2009 Projects, Software, IEEE 2009 Projects, Embedded, Software IEEE 2009 Projects, Embedded IEEE 2009 Projects, Final Year Project Titles, Final Year Project Reports, Final Year Project Review, Robotics Projects, Mechanical Projects, Electrical Projects, Power Electronics Projects, Power System Projects, Model Projects, Java Projects, J2EE Projects, Engineering Projects, Student Projects, Engineering College Projects, MCA Projects, BE Projects, BTech Projects, ME Projects, MTech Projects, Wireless Networks Projects, Network Security Projects, Networking Projects, final year projects, ieee projects, student projects, college projects, ieee projects in chennai, java projects, software ieee projects, embedded ieee projects, "ieee2009projects", "final year projects", "ieee projects", "Engineering Projects", "Final Year Projects in Chennai", "Final year Projects at Chennai", Java Projects, ASP.NET Projects, VB.NET Projects, C# Projects, Visual C++ Projects, Matlab Projects, NS2 Projects, C Projects, Microcontroller Projects, ATMEL Projects, PIC Projects, ARM Projects, DSP Projects, VLSI Projects, FPGA Projects, CPLD Projects, Power Electronics Projects, Electrical Projects, Robotics Projects, Solor Projects, MEMS Projects, J2EE Projects, J2ME Projects, AJAX Projects, Structs Projects, EJB Projects, Real Time Projects, Live Projects, Student Projects, Engineering Projects, MCA Projects, MBA Projects, College Projects, BE Projects, BTech Projects, ME Projects, MTech Projects, M.Sc Projects, Final Year Java Projects, Final Year ASP.NET Projects, Final Year VB.NET Projects, Final Year C# Projects, Final Year Visual C++ Projects, Final Year Matlab Projects, Final Year NS2 Projects, Final Year C Projects, Final Year Microcontroller Projects, Final Year ATMEL Projects, Final Year PIC Projects, Final Year ARM Projects, Final Year DSP Projects, Final Year VLSI Projects, Final Year FPGA Projects, Final Year CPLD Projects, Final Year Power Electronics Projects, Final Year Electrical Projects, Final Year Robotics Projects, Final Year Solor Projects, Final Year MEMS Projects, Final Year J2EE Projects, Final Year J2ME Projects, Final Year AJAX Projects, Final Year Structs Projects, Final Year EJB Projects, Final Year Real Time Projects, Final Year Live Projects, Final Year Student Projects, Final Year Engineering Projects, Final Year MCA Projects, Final Year MBA Projects, Final Year College Projects, Final Year BE Projects, Final Year BTech Projects, Final Year ME Projects, Final Year MTech Projects, Final Year M.Sc Projects, IEEE Java Projects, ASP.NET Projects, VB.NET Projects, C# Projects, Visual C++ Projects, Matlab Projects, NS2 Projects, C Projects, Microcontroller Projects, ATMEL Projects, PIC Projects, ARM Projects, DSP Projects, VLSI Projects, FPGA Projects, CPLD Projects, Power Electronics Projects, Electrical Projects, Robotics Projects, Solor Projects, MEMS Projects, J2EE Projects, J2ME Projects, AJAX Projects, Structs Projects, EJB Projects, Real Time Projects, Live Projects, Student Projects, Engineering Projects, MCA Projects, MBA Projects, College Projects, BE Projects, BTech Projects, ME Projects, MTech Projects, M.Sc Projects, IEEE 2009 Java Projects, IEEE 2009 ASP.NET Projects, IEEE 2009 VB.NET Projects, IEEE 2009 C# Projects, IEEE 2009 Visual C++ Projects, IEEE 2009 Matlab Projects, IEEE 2009 NS2 Projects, IEEE 2009 C Projects, IEEE 2009 Microcontroller Projects, IEEE 2009 ATMEL Projects, IEEE 2009 PIC Projects, IEEE 2009 ARM Projects, IEEE 2009 DSP Projects, IEEE 2009 VLSI Projects, IEEE 2009 FPGA Projects, IEEE 2009 CPLD Projects, IEEE 2009 Power Electronics Projects, IEEE 2009 Electrical Projects, IEEE 2009 Robotics Projects, IEEE 2009 Solor Projects, IEEE 2009 MEMS Projects, IEEE 2009 J2EE P
Introduction on STM32 Platform and Presentation of a Water-Level & Temperatur...Julio César Carrasquel
The following slides were used as an introductory support for the hands-on workshop on the STM32 Platform that was held on the Pervasive Systems course (La Sapienza University of Rome, May 2017).
Programmable Limit Alarm Trips with Intrinsically-Safe Field ConnectionsArjay Automation
The universal SPA2IS Programmable Limit Alarm Trips provide on/off control, warn of unwanted process conditions, alarm on rate-of-change and provide emergency shutdown. Very versatile, they accept signal inputs from transmitters and temperature
sensors that are located in hazardous areas where the method of protection implemented by the plant or facility is Intrinsic Safety.
Reviews of Cascade Control of Dc Motor with Advance Controllerijsrd.com
The proportional- integral-derivative (PID) control is the most used algorithm to regulate the armature current and speed of cascade Control system in motor drives. The controller uses two PID controllers. One PI controller is for speed control and second PID controller for current control in cascade structure. Inner loop is for the current control which is faster than the outer loop. Outer loop is for speed control. The output of the encoder is compared with a preset reference speed. The output of the PI controller is summed and is given as the input to the current controller.
AC Induction motor (IM) are used as actuators in many industrial processes. Although IMs are reliable, they are subjected to some undesirable stresses, causing faults resulting in failure. Monitoring of an IM is a fast emerging technology for the detection of initial faults. It avoids unexpected failure of an industrial process. Monitoring techniques can be classified as the conventional and the digital techniques.
1.1 PROTECTION SCHEME OF INDUCTION MOTOR
Classical monitoring techniques for three-phase IMs are generally provided by some combination of mechanical and electrical monitoring equipment. Mechanical forms of motor sensing are also limited in ability to detect electrical faults, such as stator insulation failures. In addition, the mechanical parts of the equipment can cause problems in the course of operation and can reduce the life and efficiency of a system.
It is well known that IM monitoring has been studied by many researchers and reviewed in a number of works. Reviews about various stator faults and their causes, and detection techniques, latest trends, and diagnosis methods supported by the artificial intelligence, the microprocessor, the computer and other techniques in monitoring unbalanced voltage inter turn faults, stator winding temperature and microcontroller based digital protectors have been recently studied subjects. In these, while one or two variables were considered together to protect the IMs, the variables of the motor were not considered altogether. Measurements of the voltages, currents, temperatures, and speed were achieved and transferred to the computer for final protection decision.
A programmable integrated circuit (PIC) based protection system has been introduced using Microprocessors and the solutions of various faults of the phase currents, the phase voltages, the speed, and the winding temperatures of an IM occurring in operation have been achieved with the help of the microcontroller, but these electrical parameters have not been displayed on a screen.
Nowadays, the most widely used area of programmable logic controller (PLC) is the control circuits of industrial automation systems. The PLC systems are equipped with special I/O units appropriate for direct usage in industrial automation systems. The input components, such as the pressure, the level, and the temperature sensors, can be directly connected to the input. The driver components of the control circuit such as contactors and solenoid valves can directly be connected to the output.
STMicroelectronics provides the STM32L4 family of low-power
microcontrollers based on the ARM Cortex M4 architecture. This project uses the STM32L476RG microcontroller as the core piece for the management of a tank water-level & temperature monitoring system. For the detecting the tank water-level is used the HCSR04 ultra-sonic ranging device
whereas for the temperature is used the water-proof DS18B20 thermometer which goes immersed below the water. The system also includes an U-Blox NEO-6M GPS receiver which keeps track of the location where the system is operating. In order to carry out the development tasks it was used the
STM32CubeMX framework and the System Workbench 4 IDE which provide an easy & professional environment. It was taken into advantage the several microcontroller capabilities such as the different clock sources, the UART interfaces and the management of different general input/output ports among others in order to make a correct system configuration. The
first section of this work makes a description of the microcontroller & the project general structure. The second section describes the GPS module. The third section explains the temperature module. The fourth section addresses
the water-level module, and finally the fifth section describes the implementation of a system terminal for interacting with the user.
7SR220 series relays include for directional control of the overcurrent and earth fault functionality and are typically installed where fault current can flow in either direction i.e. on interconnected systems. Relays have five current and four voltage inputs they are housed in E6 or E8 cases.
Monitoring and Control System for Building Application Using Modbus Remote Te...IJITCA Journal
This paper presents the design of a monitoring and control system that will be installed in buildings and
used as a building management system for monitoring dan controlling mechanical and electrical devices
embedded in the building.
The system implements the master slave RS485 multidrop configuration. The system hardware consists of
sensor, controller, and actuator. Arduino board with AT Mega series microcontroller unit (MCU) is used
as controller. MCU’s ADC will be used as sensor. MODBUS remote terminal unit is used as protocol and
implemented inside the master and slave progam inside the MCU.
At the end of this paper, the result of transmission with various baud rate setting, various cable length,
multiple message frames and are presented.
Implementation of Transformer Protection by Intelligent Electronic Device for...IJERA Editor
Protection of power system equipments was traditionally done by using electromagnetic relay, static relays, and
numerical relays. At present the microprocessor based relays are replacing the old Electromagnetic relays
because of their high level accuracy and fast operation. RET670(Transformer protection relay ), an IED
(INTELLIGENT ELECTRONIC DEVICE) provides fast and selective protection, monitoring, and control of all
types of transformer. The configured IED is tested under different fault conditions simulated by using mobile test
kit to ensure IED’s reliable operation on site. With preconfigured algorithms, the IED will automatically
reconfigure the network in case of a fault, and a service restoration is carried out within milliseconds by giving
trip signal to the corresponding Circuit breakers. On receiving the trip signal the circuit breaker operates
providing quicker isolation of transformers under the fault condition. This enables to have a complete and an
adequate protection to the specified power transformer.
this is a complete summer training report on embedded sys_AVR. It aslo includes a project and its coding and other topics which are learnt in training.
final Year Projects, Final Year Projects in Chennai, Software Projects, Embedded Projects, Microcontrollers Projects, DSP Projects, VLSI Projects, Matlab Projects, Java Projects, .NET Projects, IEEE Projects, IEEE 2009 Projects, IEEE 2009 Projects, Software, IEEE 2009 Projects, Embedded, Software IEEE 2009 Projects, Embedded IEEE 2009 Projects, Final Year Project Titles, Final Year Project Reports, Final Year Project Review, Robotics Projects, Mechanical Projects, Electrical Projects, Power Electronics Projects, Power System Projects, Model Projects, Java Projects, J2EE Projects, Engineering Projects, Student Projects, Engineering College Projects, MCA Projects, BE Projects, BTech Projects, ME Projects, MTech Projects, Wireless Networks Projects, Network Security Projects, Networking Projects, final year projects, ieee projects, student projects, college projects, ieee projects in chennai, java projects, software ieee projects, embedded ieee projects, "ieee2009projects", "final year projects", "ieee projects", "Engineering Projects", "Final Year Projects in Chennai", "Final year Projects at Chennai", Java Projects, ASP.NET Projects, VB.NET Projects, C# Projects, Visual C++ Projects, Matlab Projects, NS2 Projects, C Projects, Microcontroller Projects, ATMEL Projects, PIC Projects, ARM Projects, DSP Projects, VLSI Projects, FPGA Projects, CPLD Projects, Power Electronics Projects, Electrical Projects, Robotics Projects, Solor Projects, MEMS Projects, J2EE Projects, J2ME Projects, AJAX Projects, Structs Projects, EJB Projects, Real Time Projects, Live Projects, Student Projects, Engineering Projects, MCA Projects, MBA Projects, College Projects, BE Projects, BTech Projects, ME Projects, MTech Projects, M.Sc Projects, Final Year Java Projects, Final Year ASP.NET Projects, Final Year VB.NET Projects, Final Year C# Projects, Final Year Visual C++ Projects, Final Year Matlab Projects, Final Year NS2 Projects, Final Year C Projects, Final Year Microcontroller Projects, Final Year ATMEL Projects, Final Year PIC Projects, Final Year ARM Projects, Final Year DSP Projects, Final Year VLSI Projects, Final Year FPGA Projects, Final Year CPLD Projects, Final Year Power Electronics Projects, Final Year Electrical Projects, Final Year Robotics Projects, Final Year Solor Projects, Final Year MEMS Projects, Final Year J2EE Projects, Final Year J2ME Projects, Final Year AJAX Projects, Final Year Structs Projects, Final Year EJB Projects, Final Year Real Time Projects, Final Year Live Projects, Final Year Student Projects, Final Year Engineering Projects, Final Year MCA Projects, Final Year MBA Projects, Final Year College Projects, Final Year BE Projects, Final Year BTech Projects, Final Year ME Projects, Final Year MTech Projects, Final Year M.Sc Projects, IEEE Java Projects, ASP.NET Projects, VB.NET Projects, C# Projects, Visual C++ Projects, Matlab Projects, NS2 Projects, C Projects, Microcontroller Projects, ATMEL Projects, PIC Projects, ARM Projects, DSP Projects, VLSI Projects, FPGA Projects, CPLD Projects, Power Electronics Projects, Electrical Projects, Robotics Projects, Solor Projects, MEMS Projects, J2EE Projects, J2ME Projects, AJAX Projects, Structs Projects, EJB Projects, Real Time Projects, Live Projects, Student Projects, Engineering Projects, MCA Projects, MBA Projects, College Projects, BE Projects, BTech Projects, ME Projects, MTech Projects, M.Sc Projects, IEEE 2009 Java Projects, IEEE 2009 ASP.NET Projects, IEEE 2009 VB.NET Projects, IEEE 2009 C# Projects, IEEE 2009 Visual C++ Projects, IEEE 2009 Matlab Projects, IEEE 2009 NS2 Projects, IEEE 2009 C Projects, IEEE 2009 Microcontroller Projects, IEEE 2009 ATMEL Projects, IEEE 2009 PIC Projects, IEEE 2009 ARM Projects, IEEE 2009 DSP Projects, IEEE 2009 VLSI Projects, IEEE 2009 FPGA Projects, IEEE 2009 CPLD Projects, IEEE 2009 Power Electronics Projects, IEEE 2009 Electrical Projects, IEEE 2009 Robotics Projects, IEEE 2009 Solor Projects, IEEE 2009 MEMS Projects, IEEE 2009 J2EE P
Introduction on STM32 Platform and Presentation of a Water-Level & Temperatur...Julio César Carrasquel
The following slides were used as an introductory support for the hands-on workshop on the STM32 Platform that was held on the Pervasive Systems course (La Sapienza University of Rome, May 2017).
Programmable Limit Alarm Trips with Intrinsically-Safe Field ConnectionsArjay Automation
The universal SPA2IS Programmable Limit Alarm Trips provide on/off control, warn of unwanted process conditions, alarm on rate-of-change and provide emergency shutdown. Very versatile, they accept signal inputs from transmitters and temperature
sensors that are located in hazardous areas where the method of protection implemented by the plant or facility is Intrinsic Safety.
Reviews of Cascade Control of Dc Motor with Advance Controllerijsrd.com
The proportional- integral-derivative (PID) control is the most used algorithm to regulate the armature current and speed of cascade Control system in motor drives. The controller uses two PID controllers. One PI controller is for speed control and second PID controller for current control in cascade structure. Inner loop is for the current control which is faster than the outer loop. Outer loop is for speed control. The output of the encoder is compared with a preset reference speed. The output of the PI controller is summed and is given as the input to the current controller.
AC Induction motor (IM) are used as actuators in many industrial processes. Although IMs are reliable, they are subjected to some undesirable stresses, causing faults resulting in failure. Monitoring of an IM is a fast emerging technology for the detection of initial faults. It avoids unexpected failure of an industrial process. Monitoring techniques can be classified as the conventional and the digital techniques.
1.1 PROTECTION SCHEME OF INDUCTION MOTOR
Classical monitoring techniques for three-phase IMs are generally provided by some combination of mechanical and electrical monitoring equipment. Mechanical forms of motor sensing are also limited in ability to detect electrical faults, such as stator insulation failures. In addition, the mechanical parts of the equipment can cause problems in the course of operation and can reduce the life and efficiency of a system.
It is well known that IM monitoring has been studied by many researchers and reviewed in a number of works. Reviews about various stator faults and their causes, and detection techniques, latest trends, and diagnosis methods supported by the artificial intelligence, the microprocessor, the computer and other techniques in monitoring unbalanced voltage inter turn faults, stator winding temperature and microcontroller based digital protectors have been recently studied subjects. In these, while one or two variables were considered together to protect the IMs, the variables of the motor were not considered altogether. Measurements of the voltages, currents, temperatures, and speed were achieved and transferred to the computer for final protection decision.
A programmable integrated circuit (PIC) based protection system has been introduced using Microprocessors and the solutions of various faults of the phase currents, the phase voltages, the speed, and the winding temperatures of an IM occurring in operation have been achieved with the help of the microcontroller, but these electrical parameters have not been displayed on a screen.
Nowadays, the most widely used area of programmable logic controller (PLC) is the control circuits of industrial automation systems. The PLC systems are equipped with special I/O units appropriate for direct usage in industrial automation systems. The input components, such as the pressure, the level, and the temperature sensors, can be directly connected to the input. The driver components of the control circuit such as contactors and solenoid valves can directly be connected to the output.
STMicroelectronics provides the STM32L4 family of low-power
microcontrollers based on the ARM Cortex M4 architecture. This project uses the STM32L476RG microcontroller as the core piece for the management of a tank water-level & temperature monitoring system. For the detecting the tank water-level is used the HCSR04 ultra-sonic ranging device
whereas for the temperature is used the water-proof DS18B20 thermometer which goes immersed below the water. The system also includes an U-Blox NEO-6M GPS receiver which keeps track of the location where the system is operating. In order to carry out the development tasks it was used the
STM32CubeMX framework and the System Workbench 4 IDE which provide an easy & professional environment. It was taken into advantage the several microcontroller capabilities such as the different clock sources, the UART interfaces and the management of different general input/output ports among others in order to make a correct system configuration. The
first section of this work makes a description of the microcontroller & the project general structure. The second section describes the GPS module. The third section explains the temperature module. The fourth section addresses
the water-level module, and finally the fifth section describes the implementation of a system terminal for interacting with the user.
7SR220 series relays include for directional control of the overcurrent and earth fault functionality and are typically installed where fault current can flow in either direction i.e. on interconnected systems. Relays have five current and four voltage inputs they are housed in E6 or E8 cases.
Monitoring and Control System for Building Application Using Modbus Remote Te...IJITCA Journal
This paper presents the design of a monitoring and control system that will be installed in buildings and
used as a building management system for monitoring dan controlling mechanical and electrical devices
embedded in the building.
The system implements the master slave RS485 multidrop configuration. The system hardware consists of
sensor, controller, and actuator. Arduino board with AT Mega series microcontroller unit (MCU) is used
as controller. MCU’s ADC will be used as sensor. MODBUS remote terminal unit is used as protocol and
implemented inside the master and slave progam inside the MCU.
At the end of this paper, the result of transmission with various baud rate setting, various cable length,
multiple message frames and are presented.
Implementation of Transformer Protection by Intelligent Electronic Device for...IJERA Editor
Protection of power system equipments was traditionally done by using electromagnetic relay, static relays, and
numerical relays. At present the microprocessor based relays are replacing the old Electromagnetic relays
because of their high level accuracy and fast operation. RET670(Transformer protection relay ), an IED
(INTELLIGENT ELECTRONIC DEVICE) provides fast and selective protection, monitoring, and control of all
types of transformer. The configured IED is tested under different fault conditions simulated by using mobile test
kit to ensure IED’s reliable operation on site. With preconfigured algorithms, the IED will automatically
reconfigure the network in case of a fault, and a service restoration is carried out within milliseconds by giving
trip signal to the corresponding Circuit breakers. On receiving the trip signal the circuit breaker operates
providing quicker isolation of transformers under the fault condition. This enables to have a complete and an
adequate protection to the specified power transformer.
Reyrolle 7SR105 Rho motor protection relay is a numerical protection relay intended for use in the motor protection applications. It provides a highly comprehensive functional software package with a range of integral application functions aimed at reducing installation, wiring, and engineering time.
The device is housed in a 4U high, size 4 non draw-out case and these relays provide protection, monitoring, instrumentation, and metering with integrated input and output logic, data logging and fault reports. Communication access to the relay functionality is via a front USB port for local PC connection or rear electrical RS485 port for remote connection
Reyrolle7SR18, is a numeric three phase differential protection relay used to detect in zone phase and earth faults. This differential protection relay is applied to overhead line and underground cable circuits as well as shorter circuits such as interconnectors.
The SIPROTEC Compact 7SJ80 relays can be used for line/feeder protection of high and medium voltage networks with grounded, low-resistance grounded, isolated or a compensated neutral point. The relays have all the required functions to be applied as a backup relay to a transformer differential relay.
The 7SR23 DAD is a numeric high impedance circulating current relay has four current inputs, it is used as a unit protection to detect phase and earth faults.
The relay can be applied to busbars, connections, transformers, reactors and motors.
The SIPROTEC Compact 7SK81 provides 4 low-power current transformer inputs and optionally 3 low-power voltage transformer inputs. With the same low-power current transformer (LPCT) a wide range of primary rated line currents can be covered. Objects with rated currents in the rangefrom 20 A to 2500 A can be protected when using low-power current transformers.
three phase fault analysis with auto reset for temporary fault and trip for p...Vikram Rawani
The project was aimed to prevent failures due to some faults which can be temporary or permanent in 3-phase power supply .
The purpose of our project was to develop an automatic tripping mechanism for the three phase supply system. The project output resets automatically after a brief interruption in the event temporary fault while it remains in tripped condition in case of permanent fault.
The important aspect of our project revolves around the concept of monitoring the machines utilized in the textile industry. It is aimed at continuously examining the components and machineries in the industry. This project have the ability to establish communication link between various machineries in industries and the controlling system. It also helps in sequential power ON and power OFF of the machineries depending on the outputs received from the controlling unit. The project enables automatic manipulation of the machineries. The controlling system monitors various parameters of the machineries and evaluates its performance and updates the required changes. The machineries will be linked via RF transmitter and receiver. This enables communication link between the controlling device and the connected recipient devices. For maintenance purposes both automatic and manual methods of manipulation are provided. Either of them can be chosen depending upon the purpose. When automatic mode is turned on the machines can be controlled only by the server.
The SIPROTEC Compact 7RW80 is a numerical, multifunction relay for connection to voltage transformers. It can be used in distribution systems, on transformers and for electrical machines. If the SIPROTEC Compact 7RW80 detects any deviation from the permitted voltage, frequency or over excitation values, it will respond according to the values set. The relay can also be applied for the purposes of system decoupling and for load shedding if ever there is a risk of a system collapse as a result of inadmissibly large frequency drops.
7SR224 series relays include for directional control of three phase overcurrent and earth fault functionality and typically installed as an integral controller for a pole mounted recloser. The controller offers an integrated auto-reclose solution for use on OHL feeders.
The relay functionality allows highly flexible settings for current and time grading making it compatible with all types of overcurrent protections.
@Station is an Integrated Control and Protection designed for the operation of transmission and distribution substations. The system incorporates the latest technology in the field of substation automation to provide its users with innovative solutions to their requirements.
DETECTING POWER GRID SYNCHRONISATION FAILURE ON SENSING BAD VOLTAGE OR FREQUE...Pradeep Avanigadda
The project is designed to develop a system to detect the synchronization failure of any external supply source to the power grid on sensing the abnormalities in frequency and voltage.
There are several power generation units connected to the grid such as hydel, thermal, solar etc to supply power to the load. These generating units need to supply power according to the rules of the grid. These rules involve maintaining a voltage variation within limits and also the frequency. If any deviation from the acceptable limit of the grid it is mandatory that the same feeder should automatically get disconnected from the grid which by effect is termed as islanding. This prevents in large scale brown out or black out of the grid power. So it is preferable to have a system which can warn the grid in advance so that alternate arrangements are kept on standby to avoid complete grid failure.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
3. Self-powered feeder protection 1MDB07217-YN
REJ603
Product version: 3.0 Issued: 2017-11-21
Revision: E
3 ABB
1. Description
REJ603 is a self-powered feeder protection
relay, intended for the protection of utility substa-
tions and industrial power systems, in secondary
distribution networks. REJ603 is a member of
ABB’s Relion® product family and part of its 605
series.
The feeder protection relay REJ603 is designed
to be a part of Ring Main Units (RMU) and
secondary distribution switchgears. The REJ603
relay is a self-powered numerical relay, which
receives power from the main current
transformers. This way REJ603 is an ideal
choice for installations where an auxiliary
supplies are not available and hence is suitable
for unmanned distribution substations having no
auxiliary supplies.
Relay has add-on optional function of remote trip
through binary input with selection of auxiliary
power version.
2. Relay functions
The relay provides an optimized composition of
protection and monitoring functionality in one
unit, with the best performance usability in its
class and are based on ABB’s in-depth
knowledge of protection and numerical
technology.
REJ603 offers pre-configured functionality which
facilitates easy and fast commissioning of
switchgear.
To emphasize the simplicity of relay’s usage,
only application specific parameters needs to set
within the relay’s intended area of application.
The relay also has short power up time which
ensures fast operation during switch on to fault.
The relay supports functions as indicated in
Table 2.
Table 1. Standard configurations
Description Relay type
Self-powered feeder protection REJ603
Table 2. Application configurations and supported functions
Functionality ANSI IEC B
Protections
Non-directional overcurrent protection, low-set stage 51 3I> ●
Non-directional overcurrent protection, high-set stage 50-1 3I>> ●
Non-directional overcurrent protection, instantaneous stage 50-2 3I>>> ●
Earth-fault protection, low-set stage 51N I0> ●
Earth-fault protection, high-set stage 50N I0>> ●
Three phase transformer inrush detector 68 3I2f> ●
Three-phase thermal protection for feeders, cables and distribution
transformers
49 3Ith> ●
Two setting group ●
External remote trip input with power supply o
4. Self-powered feeder protection 1MDB07217-YN
REJ603
Product version: 3.0 Issued: 2017-011-21
Revision: E
4 ABB
Table 3. Application configurations and supported functions, continued
Functionality ANSI IEC B
Measurement
Three-phase current measurement 3I 3I ●
Residual current measurement In I0 ●
Thermal level ϑ ϑ ●
Disturbance recorder ●
● = Included, o = Optional at the time of ordering
3. Protection functions
REJ603 offers three-stage overcurrent and two-
stage earth-fault protection functions. The
transformer inrush detector function is
incorporated to prevent unwanted tripping’s due
to energizing of transformers.
The low-set stages for overcurrent and earth-
fault protection are equipped with selectable
characteristics – Definite time (DT) and Inverse
definite minimum time (IDMT). The relay features
standard IDMT characteristics according IEC
60255-151, Normal Inverse (NI), Very Inverse
(VI), Extremely Inverse (EI), Long-time Inverse
(LI) and IDMT characteristics as per ANSI
C37.112 Moderate inverse, Normal Inverse, Very
inverse, Extremely inverse. The relay also has
special characteristics like RI, HR and FR fuse,
which allows better co-ordination with the rest of
the network.
Further relay offers thermal overload protection
for feeder, cable and transformer.
.
Figure 1. Functionality overview for REJ603
5. Self-powered feeder protection 1MDB07217-YN
REJ603
Product version: 3.0 Issued: 2017-11-21
Revision: E
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4. Application
The REJ603 is a protection relay aimed at
selective short-circuit and earth-fault protection
of feeders in secondary distribution networks
and for protection of transformers in utilities and
industries.
The inrush current stabilization function allows
the relay to be used as main protection of
distribution transformers.
The relay is powered up through current
transformer if current is above energizing level of
relay, front USB power or through auxiliary
supply (optional feature).
The relay offers, non-directional over current and
earth-fault protection. The residual current for
the earth-fault protection is derived from the
phase currents. When applicable, the core-
balance current transformers can be used for
measuring the residual current, especially when
sensitive earth-fault protection is required.
The relay additionally offers thermal overload
protection for feeders, cables and transformers.
There is optional provision of remote trip through
binary input with external auxiliary power supply.
The remote trip signals like transformer trouble
output (Buchholz, Oil temperature, Winding
temperature trip) or an external trip can be wired
to binary input. The remote trip function works
even in CT-powered mode when auxiliary supply
is not available but enough CT current is
available to power-up the relay.
5. Measurement
The relay continuously measures phase currents
and earth current. Earth current can be
measured using external core balance current
transformer or can be calculated internally.
The relay has provision to display measured
three phase current and earth current in primary
and secondary terms. Additionally, relay displays
status of binary input, binary output and trip
counter for over current and earth fault trip.
During service, the default view of display shows
three phase current and the earth current in
secondary terms. The values measured can be
accessed using on the local HMI.
The relay continuously measures thermal level.
6. Event log
To collect sequence – of – events (SoE)
information, the relay incorporates a non-volatile
memory with a capacity of storing 250 events
with associated time stamps with resolution
of 1 ms. Event log includes protection operation
status, binary I/O status and relay fault code.
The event logs are stored sequentially, the most
recent being first and so on. The non-volatile
memory retains its data also in case the relay
temporarily loses its auxiliary supply.
The event log facilitates detailed post-fault
analysis of feeder faults and disturbances. The
SoE information can be accessed locally via the
user interface on the relay front panel.
7. Disturbance recorder
The relay is provided with the feature of
disturbance recorder featuring up to 4 analog
signals and 8 binary signal channels. The analog
channels are set to record the current waveform.
The triggering of disturbance record can be done
through external or internal relay signals like
protection start, trip, and remote trip etc. There is
provision of manual triggering of the recording.
The disturbance recording is also possible in CT-
powered mode. The recorded information is
stored in COMTRADE format with date and time
stamping in a non-volatile memory and can be
uploaded from front USB port for subsequent
fault analysis.
8. Self-supervision and test function
The relay’s built-in self-supervision system con-
tinuously monitors the state of the relay
hardware and the operation of the relay
software. Any fault or malfunction detected will
be used for alerting the operator. A permanent
relay fault will block the protection functions of
the relay to prevent incorrect relay operation.
The relay supports a built-in test mode which
enables user to test the relay protection
functions, HMI and binary outputs. The test
function is enabled through USB power which
facilitates the testing of entire scheme including
relay and activation of bi-stable trip output.
6. Self-powered feeder protection 1MDB07217-YN
REJ603
Product version: 3.0 Issued: 2017-011-21
Revision: E
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9. Access control
To protect the relay from unauthorized access
and to maintain the integrity of information, the
relay is enabled with a three-level, role-based
user authentication system password for the
operator, engineer and administrator levels. The
password is alpha-numeric based and is
administrator programmable for three levels of
hierarchy.
10. Local HMI
Local HMI of relay contains LCD display, LED
indicators and navigation keys. The
measurement, events, setting can be viewed in
display.
Phase as well earth fault trip indication is
provided through hand-reset electromechanical
flag which ensures availability of relay operation
indication even in absence of primary CT
current.
The relay has additionally two LED indications
on LHMI, the green color ‘ready’ LED is provided
to indicate the relay in operation when minimum
current required for operation is available and for
indicating internal relay failure. The yellow
colored ‘start’ LED is provided to indicate the
protection pick up.
11. Inputs and outputs
The relay is equipped with four 1A or 5A analog
current inputs, 3 for phase current and 1 for
earth current measurements.
The relay has optional one binary input. The
binary input is configured for remote (external)
trip and protection blocking.
The relay has a one capacitor discharge impulse
output (24V DC, 100 mJ) for tripping circuit
breaker with sensitive trip coil. Additionally two
bi-stable signal outputs are available for
protection start / trip and remote trip indications
to an external system.
The bi-stable output contacts are pre-configured
according to default configuration, however can
be easily reconfigured for protection start,
protection trip and remote trip indication by using
the LHMI menu.
12. Application warning
In case the relay REJ603 (optional functionality
with external power supply) is supplied with UPS
step-wave or square-wave, an interposing
transformer is needed to keep the supply voltage
(peak voltage) below the upper limit of the relay.
These are the recommended transformer
characteristics:
Nominal Power: 7.5 VA
Secondary voltage: in the range
30...150 V AC
Table 4. Input/output overview
Relay type Analog input Binary inputs Binary outputs
CT BI BO
REJ603 4 1 (optional) 1 (Impulse trip)
2 (Bi-stable signaling)
7. Self-powered feeder protection 1MDB07217-YN
REJ603
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13. Technical data
Table 5. Dimensions
Relay type Description Value
Width
frame 132.5 mm
case 121.5 mm
Height
frame 167.0 mm
case 137.0 mm
Depth case 182.5 mm
Weight relay 2.96 kg
Table 6. Power supply for remote trip function (optional functionality with external power supply)
Description Value
Uaux nominal
24...240 V AC, 50 and 60 Hz
24...240 V DC
Uaux variation
85...110% of Uaux (20.4...264 V AC)
80...120% of Uaux (19.2...288 V DC)
Burden of auxiliary voltage supply under
quiescent (Pq)/operating condition < 2.0 W / < 4.5 W
Ripple in the DC auxiliary voltage Max 15% of the DC value (at frequency of 100 Hz)
Table 7. Energizing inputs
Description Value
Rated frequency
50/60 Hz
Current inputs Rated current, In 1 A 5A
Thermal withstand capability:
Continuous
For 1 s
For 10 s
2.5 A
100 A
20 A
12.5 A
500 A
100 A
Input burden in CT powered circuit 2.5 VA 2.5 VA
Input impedance for measuring input < 100 m Ω < 20 m Ω
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Table 8. Binary input (optional functionality with external power supply)
Description Value
Rated voltage
24...240 V AC, 50 and 60 Hz
24...240 V DC
Operating range
85...110% of Uaux (20.4...264 V AC)
80...120% of Uaux (19.2...288 V DC)
Current drain 2...20 mA
Power consumption/input < 0.5 W
Input sensing time 25 ms
Table 9. Impulse voltage trip output
Description Value
Rated voltage 24 V
Pulse duration 50 msec
Energy 100 mJ
Table 10. Bi-stable power output relay
Description Value
Rated voltage 60 V AC / DC, 0.3 A
Continuous contact carry 2 A, 24V DC
Make and carry for 3.0 s 4 A, 24V DC
Make and carry for 0.5 s 6 A, 24V DC
Breaking capacity when the control-circuit time constant L/R<40
ms, at 24 / 110 / 220 V DC
1.5 A / 0.25 A / 0.1A
Minimum contact load 100 mA at 24 V AC/DC
Table 11. Degree of protection of relay
Description Value
Front side IP 54B
Rear side, connection terminals IP 20
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REJ603
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Table 12. Environmental conditions
Description Value
Operating temperature range -25...+55ºC
Short-time service temperature range
-40...+85ºC (<16 h)
Display viewable range : above -20 ºC up to
+70 ºC
Relative humidity < 93%, non-condensing
Atmospheric pressure 86...106 kPa
Altitude up to 2000 m
Transport and storage temperature range -40...+85ºC
Table 13. Environmental tests
Description Type test value Reference
Dry heat test (humidity < 50% )
Working
Storing
96 h at +70°C
96 h at +85°C
IEC 60068-2-2
Dry cold test
Working
Storing
96 h at -25°C
96 h at -40°C
IEC 60068-2-1
Damp heat test, cyclic 2 cycles (12 h + 12 h) at
+25°C…+55°C,
Rh > 93%
IEC 60068-2-30
Change of temperature test Cyclic : 3 hours at -25°C + 3
hours at +55°C ,
Number of cycles : 5
IEC 60068-2-14
Table 14. Electromagnetic compatibility tests
Description Type test value Reference
1 MHz/100 kHz burst disturbance test:
Common mode
Differential mode
2.5 kV, 400/40 pulses/s
1.0 kV, 400/40 pulses/s
IEC 61000-4-18, class III
IEC 60255-26
Electrostatic discharge test:
Contact discharge
Air discharge
4 kV, 150 pF/330 Ω
6 kV, 150 pF/330 Ω
IEC 61000-4-2
Conducted radio frequency interference
tests:
10 V
f=150 KHz...80 Mhz
10 V
f=27, 68 MHz
Not applicable for low energy trip
output
IEC 60255-26
IEC 61000-4-6
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Table 15. Electromagnetic compatibility tests, continued
Description Type test value Reference
Fast transient disturbance tests:
All ports 4 kV, 5.0 kHz
Not applicable for low energy trip
output
IEC 60255-26,
IEC 61000-4-4
Radiated, electro-magnetic field immunity
test
10 V/m
f=80-1000 MHz, 1.4-2.7 GHz
10 V/m
f=80, 160, 380, 450, 900 MHz,
1850 MHz, 2150 MHz
900 MHz PM, 1.89 GHz PM
IEC 60255-26,
IEC 61000-4-3
Surge immunity test:
Common mode
Differential mode
4.0 kV, 1.2/50 µs
2.0 kV, 1.2/50 µs (bi-stable O/P
and power supply port)
Not applicable for low energy trip
output
2.0 kV, 1.2/50 µs
1.0 kV, 1.2/50 µs (bi-stable O/P
and power supply port)
IEC 60255-26
IEC 61000-4-5
Power frequency magnetic field immunity
test:
Continuous
Short duration ( 3 s )
100 A/m
300 A/m
IEC 60255-26
IEC 61000-4-8
Power frequency immunity test:
Common mode
Differential mode
300 V rms
150 V rms
IEC 60255-26
IEC 61000-4-16
Pulse magnetic field immunity tests: 1000 A/m, 6.4/16 μs IEC 61000-4-9
Emission tests:
Conducted
150 kHz-0.5 MHz
0.5 MHz-30 MHz
Radiated
30-230 MHz
230-1000 MHz
< 66 dB ( μV/m)
< 60 dB ( μV/m)
< 40 dB ( μV/m)
< 47 dB ( μV/m)
IEC 60255-26
EN 55011-CISPR 11, 22
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Table 16. Insulation tests
Description Type test value Reference
Dielectric test
Test voltage
Test voltage for bi-stable
contact
2 kV, 50 Hz, 1 min
0.5 kV, 50 Hz, 1 min
Not applicable for low energy trip
output
IEC 60255-27
Impulse voltage test
Test voltage
Test voltage for binary input
and bi-stable contact
5 kV, 1.2/50 μs, 0.5 J
1 kV, 1.2/50 μs, 0.5 J
Not applicable for low energy trip
output
IEC 60255-27
Insulation resistance test
Isolation resistance > 100 M Ω at 500 V DC
IEC 60255-27
Protective bonding test
Resistance <0.1 Ώ, 20 A, 60 s
IEC 60255-27
Table 17. Mechanical tests
Description Type test value Reference
Vibration tests
Response
Endurance / Withstand
10...150 Hz, 0.075 mm / 1.0g,
1 sweep / axis
10...150 Hz, 2.0 g,
20 sweeps / axis
IEC 60255-21-1, class I
Shock tests
Response
Endurance / Withstand
5 g, 3 pulses in each direction
15 g, 3 pulses in each direction
IEC 60255-21-2, class I
Bump tests 10 g, 1000 bumps in each
direction
IEC 60255-21-2, class I
Seismic test IEC 60255-21-3, class I
Table 18. Power supply module test
Description Type test value Reference
Gradual shutdown and start up Shut-down ramp: 60 s
Power off period: 300 s
Start-up ramp: 60 s
IEC 60255-26
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Table 19. Product safety
Description Type test value
LV directive 2014/35/EU
Standard EN 60255-27 (2014)
EN 60255-1 (2010)
Table 20. EMC compliance
Description Type test value
EMC directive 2014/30/EU
Standard EN 60255-26 (2013)
Table 21. RoHS compliance
Description
Complies with RoHS directive 2011/65/EU
13. Self-powered feeder protection 1MDB07217-YN
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14. Protection functions
Table 22. Low-set phase overcurrent protection, stage I> / 51
Parameter Value (Range)
Setting range of pick-up current ‘I >’ 0.11)...32 x In in steps 0.001, infinite
Operation accuracy 2) ± 3.0% x In for value < 1.2 In , ± 3.0% x I for value ≥ 1.2 In
Operate time delay (DMT) ‘t >’ 0.04...64 s in steps of 0.01
Operation time accuracy definite mode 2) ± 2.0% of set value or ± 30 ms
Operating curve type IEC 60255-151:
Normal inverse, Very inverse, Extremely inverse, Long-time inverse
ANSI C37.112:
Moderate inverse, Normal Inverse, Very inverse, Extremely inverse
Special curves:
RI inverse, HR fuse, FR fuse
Time multiplier setting ‘k’ 0.02...1.6, in steps of 0.01
Operation time accuracy 2)
IEC, ANSI, RI, HR and FR
characteristics
class E(5) or ± 30 ms
class E(7.5) or ± 30 ms of theoretical value for I> set value < 0.2
Reset ratio IDMT : 0.96 and DT : 0.98
1) The relay’s minimum powering current is 0.07 x In when currents in three phase and 0.18 x In when current in a single phase.
2) Operation time accuracy for protection functions when relay is in energised condition.
Table 23. High-set phase overcurrent protection, stage I>> / 50-1
Parameter Value (Range)
Setting range of pick-up current ‘I >>’ 0.2...32.0 x In in steps 0.001, infinite for CT variant
Operation accuracy 1) ± 3.0% x In for value < 1.2 In , ± 3.0% x I for value ≥ 1.2 In
Operation mode Definite time, Instantaneous
Operate time delay (DMT) ‘t >>’ 0.04...64 s in steps of 0.01
Operation time accuracy 1) ± 2.0% of set value or ± 30 ms
Reset ratio 0.98
1) Operation time accuracy for protection functions when relay is in energised condition.
14. Self-powered feeder protection 1MDB07217-YN
REJ603
Product version: 3.0 Issued: 2017-011-21
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Table 24. Very high-set phase overcurrent protection, stage I>>> / 50-2
Parameter Value (Range)
Setting range of pick-up current ‘I >>>’ 0.2...32.0 x In in steps 0.001, infinite for CT variant
Operation accuracy 1) ± 3.0% x In for value < 1.2 In , ± 3.0% x I for value ≥ 1.2 In
Operation mode Definite time, Instantaneous
Operate time delay (DMT) ‘t >>>’ 0.04...64 s in steps of 0.01
Operation time accuracy 1) ± 2.0% of set value or ± 30 ms
Reset ratio 0.98
1) Operation time accuracy for protection functions when relay is in energised condition.
Table 25. Low-set earth-fault protection, stage I0> / 51N
Parameter Value (Range)
Setting range of pick-up current ‘I0 >’ External earth measurement (through CBCT or residual connection) :
0.01...2.0 x In in steps 0.01, infinite
Internal earth measurement : 0.1...2.0 x In in steps 0.01, infinite
Operation accuracy 1) External earth measurement : ± 3.0% x In for value < 1.2 In ,
± 3.0% x I for value ≥ 1.2 In
Internal earth measurement : ± 9.0% x In for value < 1.2 In ,
± 9.0% x I for value ≥ 1.2 In
Operate time delay (DMT) ‘t0 >’ 0.04...64 s in steps of 0.01
Operation time accuracy 1) External earth measurement : ± 2.0% of set value or ± 30 ms
Internal earth measurement : ± 10.0% of set value or ± 30 ms
Operating curve type IEC 60255-151:
Normal inverse, Very inverse, Extremely inverse, Long-time inverse
ANSI C37.112:
Moderate inverse, Normal Inverse, Very inverse, Extremely inverse
Special curves:
RI inverse, HR fuse, FR fuse
Time multiplier setting ‘k0’ 0.02...1.6, in steps of 0.01
Operation time accuracy 1)
IEC, ANSI, HR, FR characteristics
RI characteristics
IEC, ANSI, HR, FR characteristics
RI characteristics
External earth measurement : class E(5) or ± 30 ms
External earth measurement : class E(7.5) or ± 30 ms
Internal earth measurement : ± 5.0% of set value or ± 30 ms
Internal earth measurement : ± 10.0% of set value or ± 30 ms
Reset ratio IDMT : 0.96 and DT : 0.98
1) Operation time accuracy for protection functions when relay is in energised condition.
15. Self-powered feeder protection 1MDB07217-YN
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Product version: 3.0 Issued: 2017-11-21
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Table 26. High- set earth-fault protection, stage I0>> / 50N
Parameter Value (Range)
Setting range of pick-up current ‘I0 >>’ External earth measurement (through CBCT or residual connection) :
0.01...12.5 x In in steps 0.001, infinite
Internal earth measurement : 0.1...12.5 x In in steps 0.001, infinite
Operation accuracy 1) External earth measurement : ± 3.0% x In for value < 1.2 In , ± 3.0%
x I for value ≥ 1.2 In
Internal earth measurement : ± 9.0% x In for value < 1.2 In , ± 9.0% x
I for value ≥ 1.2 In
Operation mode Definite time, Instantaneous
Operate time delay (DMT) ‘t0 >>’ 0.04...64 s in steps of 0.01
Operation time accuracy 1) External earth measurement : ± 2.0% of set value or ± 30 ms
Internal earth measurement : ± 10.0% of set value or ± 30 ms
Reset ratio 0.98
1) Operation time accuracy for protection functions when relay is in energised condition.
Table 27. Transformer inrush detection, 3I2f> / 68
Parameter Value (Range)
Inrush threshold value 0.2...32 x In, in steps of 0.01
Ratio Setting 10%...50%, in steps of 1%
Table 28. Thermal overload protection, 3Ith> / 49
Parameter Value (Range)
Initial thermal level of apparatus 0 0.0…100%, in steps of 1%
Reference current leading to thermal
calculation “Ib”
0.1 … 1.5 x In, in steps of 0.1
Heating time constant of object ‘𝜏′ 1.0…300 min, in steps of 1.0
Cooling time constant of object ‘𝜏↓𝑠‘ 1.0…300 min, in steps of 1.0
Alarm value, alm 50…200%, in steps of 1%
Operate value, trip 50…200%, in steps of 1%
Options for calculating thermal value
during power interruption, powerOFF
1…4 1)
Operation time accuracy 3% of 5 time constant or ± 30s
Reset ratio 0.98
1) Options for calculating thermal image during power interruption shall be as below
1 = On restoration of power, new value of current after power on will be considered to calculate new value of thermal image for
interruption period Δt.
2 = On restoration of power, new value of thermal image is calculated for interruption period Δt considering that current has
remained constant value during power interruption.
3 = Power interruption of the relay assumes no change of thermal image during interruption period.
4 = Power interruption of the relay resets the thermal image to the set value defined by setting 0.
16. Self-powered feeder protection 1MDB07217-YN
REJ603
Product version: 3.0 Issued: 2017-011-21
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Table 29. Switch-On To Fault (SOTF) characteristics [ Specifies relay operation when relay is un-energised
condition ]
Parameter Value (Range)
At minimum value of pick-up current and minimum operate time,
minimum value of tripping time when switch-on to fault
80 ms
Figure 2: Switch-on to fault characteristics of relay REJ603
Note:
1. Operation time accuracy for protection functions shall be as indicated in Table 22-27 when relay is in energised
condition. The operation time measured when relay is in un-energised condition, shall be as per switch-on to fault
characteristics Table 29 and Figure 2. Please refer application manual for operation time accuracy class
definition of accuracy class.
2. Please refer application manual for operation time accuracy class definition for IDMT curves.
17. Self-powered feeder protection 1MDB07217-YN
REJ603
Product version: 3.0 Issued: 2017-11-21
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15. Dimensions and mounting
The REJ603 have been supplied with mounting
clamps facilitating the easy flush mounting on
the panel.
The panel cut-out for flush mounting:
With appropriate mounting accessories the
REJ603 can also be mounted on the secondary
circuit breakers and Ring Main Units.
Height : 137.0 ± 1.0 mm
Width : 121.5 ± 1.0 mm
Thickness of panel : 1.5 – 4.0 mm
Figure 3. Dimension of REJ603 – Flush mounting
Figure 4. Typical mounting of relay in RMU (Mounting plate and bracket not supplied along with relay)
Mounting bracket
Mounting plate
18. Self-powered feeder protection 1MDB07217-YN
REJ603
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16. Selection and ordering data
The relay type and serial number label identifies
the protection relay. An order number label is
placed on the side of the relay. The order
number consists of a string of codes generated
from hardware and software modules of the
relay. The serial number and order number label
is placed on side of the relay.
Use the ordering key information in Fig. 4 to
generate the order number when ordering
complete protection relay.
Example code REJ 603 B 1 N N 1 N B 3 4 N N J
# Description
1-3
Relay type
Feeder overcurrent protection REJ
4-6
Relay series identity
Self-powered or dual powered relay 603
7
Standard
IEC B
8
Analog input / output
Phase and Earth current input – 1A 1
Phase and Earth current input – 5A 2
9 Spare
None N
10
Spare
None N
11
Binary input / output slot 1
None N
1 Binary Input including power supply
24-240V AC/DC (1VA)1)
1
12
Communication
None N
13
Application configuration
Configuration B B
14
Power supply
Self-supplied 3
Dual-powered with 24-250V AC/DC
(1VA)1)
4
15
Housing configuration
Midsized housing for REJ603 4
16
Configuration
None N
Ring lug terminals 2
17 For future use N
18
Version
Product version 3.0 J
1) With binary input =1, dual powered option = 4 needs to be selected
Example order code: REJ603 B 1 N N 1 N B 3 4 N N J
20. Self-powered feeder protection 1MDB07217-YN
REJ603
Product version: 3.0 Issued: 2017-011-21
Revision: E
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17. Terminal diagram
Figure 6. Terminal diagram of REJ603 V3.0 with external earth connection through CBCT
21. Self-powered feeder protection 1MDB07217-YN
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Product version: 3.0 Issued: 2017-11-21
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Figure 7. Terminal diagram of REJ603 V3.0 with external earth connection through residual connection
22. Self-powered feeder protection 1MDB07217-YN
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Product version: 3.0 Issued: 2017-011-21
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Figure 8. Terminal diagram of REJ603 V3.0 with internal earth connection
23. Self-powered feeder protection 1MDB07217-YN
REJ603
Product version: 3.0 Issued: 2017-11-21
Revision: E
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18. References
The www.abb.com/substationautomation portal
offers you information about the distribution
automation product and service range.
You will find the latest relevant information on
the REJ603 protection relay on the product
page.
The download area on the right hand side of the
Web page contains the latest product
documentation, such as application manual,
technical presentation and so on. The selection
tool on the Web page helps you find the
documents by the document category and
language.
The Features and Application tabs contain
product related information in a compact format.
19. Document revision history
Document revision / Date Product version History
A/2015-06-06 3.0
Self-powered feeder protection REJ603 V3.0 release
with support of conventional CT support
B/2015-09-04 3.0 Content updated
C/2016-03-08 3.0 Content updated
D/2017-03-28 3.0 Content updated
E/2017-11-21 3.0 Content updated