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
It covers protection of low voltage and medium voltage motors through the use of contactors, switches, fuses, MCC, reduced voltage motor starting techniques and motor protection relays.
Presentation on Over-/under-voltage protection of electrical applianceNishant Kumar
Sudden fluctuation in supply is a very big problem in industries and domestic applications. It causes a major loss for industries, offices and homes.
This project gives a low cost and powerful solution for this problem. This Circuit protects refrigerators ,ACs, Microwave ovens as well as other appliances from over and under voltage fluctuations.
A tester simulatively generates "High energy induced lightning noise" which induced to distribution lines or communication lines by ground potential fluctuation caused by lightning strikes.
Conforming to IEC 61000-4-5 Ed.3, IEC61000-4-12 Ed.3(RINGWAVE 100kHz)and ANSI IEEE62-45(2002) *
It covers protection of low voltage and medium voltage motors through the use of contactors, switches, fuses, MCC, reduced voltage motor starting techniques and motor protection relays.
Presentation on Over-/under-voltage protection of electrical applianceNishant Kumar
Sudden fluctuation in supply is a very big problem in industries and domestic applications. It causes a major loss for industries, offices and homes.
This project gives a low cost and powerful solution for this problem. This Circuit protects refrigerators ,ACs, Microwave ovens as well as other appliances from over and under voltage fluctuations.
A tester simulatively generates "High energy induced lightning noise" which induced to distribution lines or communication lines by ground potential fluctuation caused by lightning strikes.
Conforming to IEC 61000-4-5 Ed.3, IEC61000-4-12 Ed.3(RINGWAVE 100kHz)and ANSI IEEE62-45(2002) *
Induction motor is rotating type of electro-mechanical device. Induction motor convert electrical energy into mechanical energy. Induction motor is highly reliable, require less maintenance and have high efficiency. Induction motor are wide in range of operation and it used in many application because its construction is simple and robust. In past induction motor can be protected by manual operation of component such as timer, contactor, electromagnetic switch, voltage and current transformer. Protection of an induction motor against problem such as short circuit, temperature rise, single phasing and motor vibration occurring in the operation is very important. Manual operation of protection system are very slow and is not accurate. Looking to this issues, in this paper PLC based protection method is used. Which operated automatically, provide higher accuracy and quick response.
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FOUR QUADRANT SPEED CONTROL OF DC MOTOR USING AT89S52 MICROCONTROLLERJournal For Research
Speed control of a machine is the most vital and important part in any industrial organization. This paper is designed to develop a four quadrant speed control system for a DC motor using microcontroller. The motor is operated in four quadrants i.e. clockwise, counter clock-wise, forward brake and reverse brake. It also has a feature of speed control. The four quadrant operation of the dc motor is best suited for industries where motors are used and as per requirement they can rotate in clockwise, counter-clockwise and also apply brakes immediately in both the directions. In case of a specific operation in industrial environment, the motor needs to be stopped immediately. In such scenario, this proposed system is very apt as forward brake and reverse brake are its integral features. Instantaneous brake in both the directions happens as a result of applying a reverse voltage across the running motor for a brief period and the speed control of the motor can be achieved with the PWM pulses generated by the microcontroller. The microcontroller used in this project is from 8051 family. Push buttons are provided for the operation of the motor which are interfaced to the microcontroller that provides an input signal to it and controls the speed of the motor through a motor driver IC. The speed and direction of DC motor has been observed on digital CRO. Microcontroller programming has been written in assembly language by using notepad and it has been converted in hex file by using micro vision Kiel. The burning of programming in the 8051 microcontroller chip has been done by using positron boot loader software.
Induction motor fault diagnosis by motor current signature analysis and neura...Editor Jacotech
This paper presents steps in designing dimensions of antenna and feed in axisymmetrical Cassegrain Antennas. Corrugated conical horns are used as feeds in applications with circular polarization. In the initial design steps, diameter of the main reflector is determined considering communication link budget, then feed dimensions are designed to create optimum aperture efficiency. In the last step of design, considering feed dimensions and the amount of its center phase displacements with respect to its aperture plane, dimensions of subreflector is determined to avoid additional blockage. To illustrate the procedure, an applicative design example is presented in X-band.
Electrical Power Protection & Relay Coordination EngineeringDEVELOP
DEVELOP Oil&Gas Training Center menyelenggarakan Training Electrical Power System Protection & Relay Coordination Engineering yang akan mengajarkan kepada Anda tentang Prinsip-prinsip Power System Protection Principles,Skema esential untuk Electrical Protection System, Relay Coordination System beserta optimalisasi penerapannya.
#relays The Reyrolle 7SR158 Argus voltage and frequency relays are numerical, multifunctional devices, with functionality designed for connection to voltage transformers.
The voltage and frequency functionality is supplemented by data storage, instrumentation, user configurable logic and data communication features. A menu based user friendly interface provides local access to relay settings, instruments and operational data. The fascia also benefits from 9 user configurable, tri-coloured LEDs and a USB port for PC access.
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.
Induction motor is rotating type of electro-mechanical device. Induction motor convert electrical energy into mechanical energy. Induction motor is highly reliable, require less maintenance and have high efficiency. Induction motor are wide in range of operation and it used in many application because its construction is simple and robust. In past induction motor can be protected by manual operation of component such as timer, contactor, electromagnetic switch, voltage and current transformer. Protection of an induction motor against problem such as short circuit, temperature rise, single phasing and motor vibration occurring in the operation is very important. Manual operation of protection system are very slow and is not accurate. Looking to this issues, in this paper PLC based protection method is used. Which operated automatically, provide higher accuracy and quick response.
FUNDAMENTALS OF POWER SYSTEM PROTECTION
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FOUR QUADRANT SPEED CONTROL OF DC MOTOR USING AT89S52 MICROCONTROLLERJournal For Research
Speed control of a machine is the most vital and important part in any industrial organization. This paper is designed to develop a four quadrant speed control system for a DC motor using microcontroller. The motor is operated in four quadrants i.e. clockwise, counter clock-wise, forward brake and reverse brake. It also has a feature of speed control. The four quadrant operation of the dc motor is best suited for industries where motors are used and as per requirement they can rotate in clockwise, counter-clockwise and also apply brakes immediately in both the directions. In case of a specific operation in industrial environment, the motor needs to be stopped immediately. In such scenario, this proposed system is very apt as forward brake and reverse brake are its integral features. Instantaneous brake in both the directions happens as a result of applying a reverse voltage across the running motor for a brief period and the speed control of the motor can be achieved with the PWM pulses generated by the microcontroller. The microcontroller used in this project is from 8051 family. Push buttons are provided for the operation of the motor which are interfaced to the microcontroller that provides an input signal to it and controls the speed of the motor through a motor driver IC. The speed and direction of DC motor has been observed on digital CRO. Microcontroller programming has been written in assembly language by using notepad and it has been converted in hex file by using micro vision Kiel. The burning of programming in the 8051 microcontroller chip has been done by using positron boot loader software.
Induction motor fault diagnosis by motor current signature analysis and neura...Editor Jacotech
This paper presents steps in designing dimensions of antenna and feed in axisymmetrical Cassegrain Antennas. Corrugated conical horns are used as feeds in applications with circular polarization. In the initial design steps, diameter of the main reflector is determined considering communication link budget, then feed dimensions are designed to create optimum aperture efficiency. In the last step of design, considering feed dimensions and the amount of its center phase displacements with respect to its aperture plane, dimensions of subreflector is determined to avoid additional blockage. To illustrate the procedure, an applicative design example is presented in X-band.
Electrical Power Protection & Relay Coordination EngineeringDEVELOP
DEVELOP Oil&Gas Training Center menyelenggarakan Training Electrical Power System Protection & Relay Coordination Engineering yang akan mengajarkan kepada Anda tentang Prinsip-prinsip Power System Protection Principles,Skema esential untuk Electrical Protection System, Relay Coordination System beserta optimalisasi penerapannya.
#relays The Reyrolle 7SR158 Argus voltage and frequency relays are numerical, multifunctional devices, with functionality designed for connection to voltage transformers.
The voltage and frequency functionality is supplemented by data storage, instrumentation, user configurable logic and data communication features. A menu based user friendly interface provides local access to relay settings, instruments and operational data. The fascia also benefits from 9 user configurable, tri-coloured LEDs and a USB port for PC access.
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 7SR45 Argus Self Powered/Dual Powered Non-Directional Overcurrent and Earth Fault Relay is developed using the latest generation of hardware technology and is available in multiple variants depending on the Current Transformer (CT), binary input/binary output, power supply, and communication configuration.
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.
The 7SR242 is used as a protection, control and monitoring relay for two winding transformers of all vector groups, primary configurations/connections and earthing connections.
The relay functionality also allows its application in auto-transformer and reactor protection schemes.
The SIPROTEC 4 7SJ64 can be used as a protective control and monitoring relay for distribution feeders and transmission lines of any voltage in networks that are earthed (grounded), low-resistance earthed, unearthed, or of a compensated neutral point structure. The relay is suited for networks that are radial or looped, and for lines with single or multi-terminal feeds. The SIPROTEC 4 7SJ64 is equipped with a synchronization function which provides the operationmodes ‘synchronization check’ (classical) and ‘synchronous/asynchronous switching’ (which takes the CBmechanical delay into consideration). Motor protection comprises undercurrent monitoring, starting time supervision, restart inhibit, locked rotor, load jamprotection as well asmotor statistics.
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 Reyrolle 7SR157 Argus is a combined check and system synchronising relay designed to carry out controlled closing of a circuit breaker using measurements of the line and bus voltages. The relay will prevent closure of the circuit breaker if the differences in phase angle, slip frequency or magnitude of the voltages fall outside prescribed Limits.
The SIPROTEC 7SC80 feeder protection can be used for protection and automation of medium voltage distribution feeders with grounded or low resistance grounded, isolated, or compensated neutral point.
The 7SC80 features “flexible protection functions”. 20 additional protection functions can be created by the user. For example, a rate of change of frequency function or a reverse power function can be created. The relay provides circuit-breaker control.
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.
Control functions/programmable logic
Commands for control of CB and of isolators
Graphical visualization of switch positions
Control via keyboard, binary inputs, DIGSI 4 or SCADA system
User-defined logic with CFC (e.g. interlocking)
The 7SR210 series of relays provide overcurrent and earth fault protection. These relays are typically applied to provide the main protection on feeders and interconnectors and the back-up protection on items of plant such as transformers, Relays have four current inputs and are housed in E6 or E8 cases
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.
The eRPP-FS from LayerZero Power Systems increases reliability and safety in two ways. The finger-safe eRPP-FS contains no exposed live parts.
Designed and manufactured in Aurora, Ohio, USA.
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 SIPROTEC 4 7SJ61 relays can be used for line protection of high and medium voltage networks with earthed (grounded), low-resistance earthed, isolated or compensated neutral point. When protecting motors, the SIPROTEC 4 7SJ61 is suitable for asynchronous machines of all sizes. The relay performs all functions of backup protection supplementary to transformer differential protection
Auxiliary relay and Trip Relay is an electro-mechanical relay that operates on attracted armature principal designed to IEC60255. Auxiliary relay is available in 3 NO contacts and 2 CO contacts with self reset contacts type with or without flag. Trip relay low burden is available in 3 NO and 3 NC contacts.
Utilizing the full range of benefits of distribution automation in overhead line networks requires reliable locating and signaling of earth faults and short circuits in overhead line networks.
The SICAM Fault Collector Gateway (FCG) device receives both the load current values and distribution line faults via the SICAM Fault Sensor Indicator (FSI).
Self sustained, continues functioning using internal lithium battery even after the main incomer feeder has tripped.
Safe, complies with the IEC 61010-1 safety standards.
Simple, DIP switch based setting for configuration and diagnostic testing.
Usable in grounded, isolated and compensated net-works.
Directional short-circuit and ground fault detection.
Exact and fast fault localization minimizes staff and traveling expenses.
All energy suppliers – whether they provide electricity,
natural gas, water, or district heating – face ever greater and more complex demands as they implement new energy mixes
SICAM AK 3, the youngest member of the SICAM RTUs product family, is extremely flexible and powerful thanks to the modular, consistent SICAM system architecture.
For some years now, power generation and distribution have been undergoing major changes. The systems used to monitor power supply equipment and processes must take account of these changes.
The RUGGEDCOM RSL910 is a compact form factor rugged Ethernet switch with two EoVDSL2 uplinks and two gigabit SFP uplinks providing the flexibility to use copper or optical infrastructure in harsh environments.
The RUGGEDCOM accessories portfolio includes a wide range of Fast Ethernet small form-factor pluggable (SFP) transceivers for select RUGGEDCOM routers and switches.
The RUGGEDCOM RP100 is a single port 802.3at Power-over-Ethernet injector that provides the flexibility to power remote PoE devices using standard Cat 5 cable.
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7SR105 Motor Protection Relay
1.
2. Description
• The 7SR105 Rho motor protection relay is developed by using the latest generation of
hardware technology. 7SR105 is a member of Siemens Reyrolle® protection devices Rho
product family.
• The 7SR105 Rho motor protection relay 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.
Function Overview
• 14 Stall Protection
• 46 Phase Unbalance Protection
• 49 Thermal Overload Protection
• 48/66 Start Protection
• 37 Undercurrent Protection
• 50 Instantaneous Overcurrent Protection
• 50N/G Instantaneous Derived/Measured Earth Fault
• 51 Time Delayed Overcurrent Protection
• 51N/G Time Delayed Derived/Measured Earth Fault Protection
3. User Interface
The operator interface is designed to provide a user
friendly method of controlling, viewing menus, entering
settings, and retrieving data from the relay. Five buttons
are provided for navigation around the menu structure.
LCD - A 4 line by 20 character liquid crystal display with
power save operation indicates the relay identifier,
settings, instrumentation, fault data and control
commands. Up to 6 user programmable
general alarms can be configured to display your own
indications on the LCD.
LEDs - A green steadily illuminated LED indicates the ‘Protection Healthy’ condition. 9 users
programmable LEDs are available eliminating the need for expensive panel mounted pilot lights
and associated wiring. Each LED is tri- color (red, green, yellow) allowing for clear indication of
the associated function’s state and has a label for identification.
Relay Information - The device is identified by the rating label on the front fascia.
4. Description of Functionality
14 Stall Protection
Each element has a single definite time overcurrent characteristic with settings for
pickup level and Definite Time Lag (DTL) delays.
37 Undercurrent Protection
Each element has settings for the pickup level and the definite time lag (DTL) delay.
46 Phase Unbalance Protection Unbalance current has a significant heating effect on
the motor.
48/66 Start Protection
The feature provides settings to control both the number of times a motor can be
started within a specified time period and the minimum time between starts.
49 Thermal Protection – Rotating Plant
The operating curves take into account the effects of present loading, prior loading
and unbalanced currents on the motor operating temperature.
5. Description of Functionality
50/51 G/N Earth Fault Protection
Two earth fault measurement modes are available. Measured earth fault mode (G)
directly measures the earth current from an independent CT, or the residual
connection of the 3 line CT’s.
50/51 Overcurrent Protection
Definite time elements provide short circuit overcurrent protection with independent
settings for pickup current and time-delays.
50BF Circuit Breaker Fail
The circuit breaker fail function may be triggered from an internal trip signal or from a
binary input.
81B Anti Backspin
To inhibit attempted restarting of the motor until after the rotor has completely
stopped backspin protection is applied. Starting is inhibited until the 81B time delay
has elapsed.
6. Functional Diagram
Application
• 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.
• A wide range of measured values can be viewed on the front LCD or remotely via the
communication channel.
• The integrated control feature allows the safe operation of a motor and monitoring its start
and stop operations.
7. Serial Communications
• The relay offers a USB serial port as standard on the front of all units. All of the
relays functions can be set on a PC using Reydisp Evolution via the USB port. The
connection is made with a USB cable and operates with a ‘plug and play’
connection, so no pre-setting of the relay is required.
• The front port can be switched off or set to use either the DNP3.0, MODBUS-RTU,
IEC60870-5-103 and ASCII protocols for testing purposes.
• A rear RS485 electrical connection is optionally available on the relay for system
interface connections. An internal terminating resistor is provided, which can be
connected into the circuit by adding a wire loop between the relevant terminals.
8. Construction
• The relay is housed in a non draw-out
case 4U high, size 4 case.
• The rear connection comprises of user
friendly pluggable type terminals for wire
connections for BI, BO, Communication,
Temperature inputs, and Power Supply.
• The CT terminals are suitable for ring type
lug connection to provide a secure and
reliable termination.
13. Data Acquisition-Via Communication Interface
Sequence of Event Records
Up to 1000 events are stored and time tagged to 1 ms resolution.
Fault Records
The last 15 fault records are displayed on the relay fascia and are also available through the
communication interface with time and date of trip, measured quantities and type of fault.
Waveform Recorder
The waveform recorder stores analogue data for all poles and the states of protection
functions, binary inputs, LEDs, and binary outputs with user settable pre and post trigger data.
Real Time Clock
The time and date can be set and are maintained while the relay is de-energised by a back up
storage capacitor
Language Editor
The Language editor software gives the user the ability to customize the text displayed in the
relays, Menu structure and instrumentation views
14. Mob No:
Mr. Piyush Rathi- +91-9819614841
Website:
www.reliservsolution.com
Email-ID:
piyush@reliserv.in
sales1@reliserv.in
Address:
Office No: 9, Space Heights,
Plot No. 53/54 , Sector 34,
Kamothe,Navi Mumbai- 410209
Contact us