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General characteristics:
- Pump protection (dry working protection) without external sensor
- Overload protection with thermal memory
- Phase aymmetry and phase sequence protection
- External display module for panel mounting (22 mm)
- Not connected to the motor line (passing through wires).
- Manual reset: when tripping as result of asymmetry or phase failure, the relay could be reset after 2 seconds; should tripping be caused by an overload, the waiting time to reset will be directly proportional to its severity, up to approximately 8 minutes.
- Remote reset: after the waiting time has elapsed by interrupting the auxiliary power supply and reconnecting it again after 3 seconds.
- Mounted on DIN rail EN50022-35.
- UL, cUL listed. Marked CE.
- Maximum terminal section : 2.5 mm2, No. 22-12 AWG.
- Maximum screw torque: 20 Ncm, 1.8 LB-IN.
- Norms: IEC 255-22, IEC 801, EN 50081-2, IEC-255, IEC-947
- Insulation: 2000V - 50Hz - 1min/3kV - 1.2/50 ตs.
- Storage temperature: -30ฐC +70ฐC.
- Operation temperature / Maximum altitude:
-15ฐC +60ฐC / 1000 m. |
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| Fanox proposes two models of Thermistor protewction relay (PTC). One model is with automatic reset and the other one y manual reset. |
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The RET 541/543/545 transformer terminals bring reliability and better service to your distribution network and provide all the functions you need to protect and control your transformers. Their easy to use control panel and comprehensive communications and connec-tivity give you access to all the functions you need, whatever your application.
The RET 541/543/545 Transformer Termi-nals are designed for the protection, control, measurement and supervision of two-winding power transformers and power generatortransformer blocks in distribution networks. The terminals are loaded with functionality to suit your application. Besides the three-phase stabilized current differential function featuring 2nd and 5th harmonic restraint, the Basic version termi-nals incorporate three-phase overcurrent, non-directional earth-fault, restricted earth-fault, transformer thermal overload and phase unbalance protection.
The Multi version terminals further include overvoltage and undervoltage supervision, residual voltage and overexcitation protection, overfrequency and underfrequency protection, and underimpedance protection. Enhanced with an optional automatic voltage regulator function the terminal forms an integrated transformer management unit. A special Control version terminal with just voltage regulator and control functions is also available. |
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Multi-Winding Current Differential Protection
Use the SEL-387 Relay for protection, monitoring, and automation applications for important transformers, generators, and other power apparatus. Apply the SEL-387 Relay for protection of two-, three- or four-winding power transformers. Use overcurrent elements from combined CT inputs for backup protection. Use the thermal element to activate a control or issue a warning or alarm when the transformer overheats or is in danger of excessive insulation aging or loss of life. Capture current, hourly or daily, data about your transformer using the thermal event report. Perform predictive maintenance based on accumulated through-fault duty as compared to transformer capability as defined in ANSI Standard C57.109. Use recorded fault values or an alarm set point to initiate an evaluation of transformer maintenance needs. |
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The voltage protection relay REU 610 is part of the RE_ 610 series of numerical relays for the protection and supervision of utility substations, and industrial switchgear and equipment.
The voltage protection relay is primary designed for the overvoltage protection of power system components, such as busbars, feeders, power transformers and capacitor batteries. The relay is also used for general power system earth-fault supervision. Further, the relay can be used for undervoltage protection of motors and overvoltage protection of capacitor batteries, for initialization of automatic busbar changeover, and for disconnecting small power units from the network in cases of network disturbance.
The voltage protection relay REU 610 supports a wide range of standard communication protocols, among them the IEC 61850, IEC 60870-5-103, Modbus, Profibus and DNP. |
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The SIPROTEC 7SS60 system is an inexpensive numerical differential current protection for busbars in a centralized configuration.
It is suitable for all voltage levels and can be adapted to a large variety of busbar configurations with an unlimited number of feeders. The components are designed for single busbars, 1ฝ-breaker configurations and double busbars with or without couplers.
The use of matching transformers allows phase-selective measurement. Single-phase measurement can be achieved by using summation current transformers.
Features
Optimized for single busbar and 1ฝ circuit-breaker configurations
Suitable for double busbars with or without couplers
Separate check zone possible
Short trip times
Unlimited number of feeders
Differential current principle
Low-impedance measuring method
Numerical measured-value processing
Suitable for all voltage levels
Low demands on CTs thanks to additional restraint
Measured-value acquisition via summation current transformer or phase-selective matching transformers
Maintained TRIP command (lockout function)
Centralized, compact design
Combinative with separate breaker failure protection
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SIPROTEC 7SV600 is a numerical relay used for circuit-breaker failure protection. It is suitable for use at all voltage levels and in all applications.
Protection functions
Circuit-breaker failure protection (single or three-pole with/without current)
Independently settable delay times for operation with and without current
Single or two-stage time delay of the busbar trip command
Re-trip (cross trip) stage (1st stage of the 2-stage operation)
Intertrip facility (via teleprotection interface)
End-fault protection with intertrip
No current control using the circuit-breaker auxiliary contacts
Features
Highly sensitive current detection
2-out-of-4 check of the current detectors
Short reset time, negligible overshoot time
Can be initiated by phase-segregated or common-phase trip commands
End-fault protection
Assignable output relays, LEDs and binary inputs
Monitoring functions
Monitoring of circuit-breaker auxiliary contacts
Operational current measured values
Self-supervision of the relay
Event buffer
Fault protocols
Oscillographic fault recording |
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RGU-10 (earth leakage protection relay)
- Instant current leakage and pre-alarm display
- Small size. Just 3 modules
- Type A super-immunized earth-leakage protection, suitable for the new industrial environment
- High frequency current filtering
- Programmable sensitivity and delay times
- Integration into the energy control system of the installation, using RS-485 communications
- Option for earth-leakage reclosing and overload/short circuit protection
CBS-4 (multipoint earth leakage scanning sytem)
- 4 RGU-10 in one single equipment
- Small size. Just 3 modules
- Reduces occupied space and wiring time
- RS-485 Communications
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The differential current relays type SKC is intended for the protection of generators, large motors, two winding power transformers and short lines. The following functions are provided:
thermal (49) for transformer programmable on one of the two sides;
overload (51) and short circuit (50) independently programmable on both sides;
earth fault (50N-51N) or restricted earth fault (87N);
biased differential function for transformers with second and fifth harmonic restraint (87T);
biased differential function for motors, generators, and short lines (87G). |
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SIPROTEC 4 7UT6 are used for fast and selective fault clearing of short-circuits in transformers of all voltage levels and also in rotating electric machines like motors and generators, for short lines and busbars. The protection relay can be parameterized for use with three-phase and single-phase transformers.
Differential protection for
2- up to 5-winding transformers (3-/1-phase)
motors and generators
short 2 up to 5 terminal lines
busbars up to 12 feeders (phase-segregated or with summation CT)
Protection functions
Differential protection with phase-segregated measurement
Sensitivemeasuring for low-fault currents
Fast tripping for high-fault currents
Restraint against inrush of transformer
Phase/earth overcurrent protection
Overload protection with or without temperature measurement
Negative-sequence protection
Breaker failure protection
Low/high-impedance restricted earth fault (REF)
Voltage protection functions (7UT613/633)
Flexible communication interface, eg. IEC 61850 Ethernet protocol. |
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| The L90, a member of the UR family of protection relays, is a digital current differential relay system which provides protection for transmission lines. It may be applied on or adjacent to series compensated lines for three phase tripping. The L90 utilizes an innovative current differential scheme with adaptive restraint that allows the relay to operate correctly even when fault currents are distorted by harmonics or CT saturation. Models are available for application on transmission lines with 2 or 3 terminals. The relay may be used as a standalone device or as a component of an automated substation control system. |
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SIPROTECฎ easy are 2-stage numerical overcurrent protection devices and are primarily intended as a radial feeder or transformer protection (backup) in medium-voltage networks.
They provide definite-time and inverse-time characteristics according to IEC and ANSI standards. They prove themselves every day in substations and transformer substations.
The SIPROTEC easy 7SJ45 is powered by current transformers (CT), the power is supplied from the load or short circuit current via the standard current transformers. This makes it particularly interesting for use in substations for the secondary distribution. The auxiliary power supplied SIPROTEC easy 7SJ46 is suitable for universal application due to a wide range AC/DC power supply.
Features:
1. compact dimensions, simple to install - "plug and protect,
2. housing - suitable for all environments,
3. modern measurement technique,
4. high availability thanks to permanent self-monitoring,
5. very simple and quick parameter setting using dip switches. |
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SIPROTEC 7RW600 is a numerical, multifunction relay for connection to voltage transformers. It can be used in distribution systems, on transformers and for electrical machines. If it detects any deviation from the permitted voltage, frequency or overexcitation values, it responds according to the values set.
SIPROTEC 7RW600 can be used 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. Voltage and frequency thresholds can also be monitored.
This voltage, frequency and overexcitation relay can be used to protect generators and transformers in the event of defective voltage control, of defective frequency control, or of full load rejection, or furthermore islanding generation systems. |
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The SIPROTEC 4 7SA6 distance protection relay for all voltage levels is a universal device for protection, control and automation on the basis of the SIPROTEC 4 system. Its high level of flexibility makes it suitable to be implemented at all voltage levels between 5 to 765 kV. With this relay you are ideally equipped for the future: it offers security of investment and also saves on operating costs.
High-speed tripping time
Low-impedance setpoints to protect also very short lines
Self-setting power swing detection for frequencies up to 7 Hz
Current transformer saturation detector ensures fast tripping and highest distance measurement accuracy
Phase-segregated teleprotection for improved selectivity and availability
Digital relay-to-relay communication by means of an integrated serial protection data interface
Adaptive auto-reclosure (ADT)
One of the communication interfaces is system interface for connecting to a control system via IEC 61850 Ethernet protocol. |
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SIPROTEC 7SS52 numerical protection is a selective, reliable and fast protection for busbar faults and breaker failure in medium, high and extra-high voltage substations with various possible busbar configurations.
The protection is suitable for all switchgear types with iron-core or linearized current transformers. The short tripping time is especially advantageous for applications with high fault levels or where fast fault clearance is required for power system stability.
The modular hardware allows the protection to be optimally matched to the busbar configuration. The decentralized arrangement allows the cabling costs in the substation to be drastically reduced. The 7SS52 busbar protection caters for single, double or triple busbar systems with or without and quadruple busbar systems without transfer bus with up to: 48 bays, 16 bus couplers, and 24 sectionalizing isolators and 12 busbar sections. |
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Tailored for smaller distributed generation installations, SVF5740 is a digital-based unit intended for protect the utility from having generators island on the distribution networks after the utility disconnets power from the feeders.
Learn more about SVF5740 inside product web pages. |
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G60 Generator Protection System
The G60 Generator Management Relay, part of the UR family of protective relays, is a microprocessor-based relay intended for the protection of AC generators. It may be used on any size of generator driven by steam, gas and hydraulic turbine.
Protection functions include stator differential, 3rd harmonic stator ground differential and 3rd harmonic neutral undervoltage for 100% stator ground differential protection, sensitive directional power for low forward power and reverse power protection, loss of excitation, inadvertent energization, overexcitation, current unbalance, out-of-step, and a whole suite of under- and overvoltage, and overcurrent functions. |
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The SIPROTEC 4 7SA522 is a distance protection relay for transmission lines. This relay provides full-scheme distance protection and incorporates all functions usually required for the protection of a power line. The relay is designed to provide fast and selective fault clearance on transmission and subtransmission cables and overhead lines with or without series capacitor compensation. The power system star point can be solid or resistance grounded (earthed), resonant-earthed via Peterson coil or isolated. The 7SA522 is suitable for single-pole and three-pole tripping applications with and without tele (pilot) protection schemes.
The 7SA522 incorporates several protective functions usually required for transmission line protection.
High-speed tripping time
Suitable for cables and overhead lines with or without series capacitor compensation
Self-setting power swing detection for frequencies up to 7 Hz
Digital relay-to-relay communication for two and three terminal topologies
Adaptive auto-reclosure (ADT)
One of the communication interfaces is system interface for connecting to a control system via IEC 61850 Ethernet protocol. |
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RGU-10 / CBS-4 Family. Inteligent protection
RGU-10
-Instant current leakage and pre-alarm display
- Type A super-immunized earth-leakage protection, suitable for the new industrial environment
- High frequency current filtering
- Programmable sensitivity and delay times
- Small size. Just 3 modules
- Integration into the energy control system of the installation, using RS-485 communications
- Option for earth-leakage reclosing and overload/short circuit protection
CBS-4
- 4 RGU-10 in one single equipment
- Small size. Just 3 modules
- Reduces occupied space and wiring time
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The market-leading Modular Control System (MCS) offers you more freedom to configure load feeder solutions through 1200 A. MCS load feeder components provide the following control and protection functions:
- Disconnecting means
- Short-circuit protection
- Load switching
- Motor overload protection
- Status indication and signaling
- DeviceNet™ communications |
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Designed for medium-sized motors, the enhanced 369 Motor Protection System delivers advanced motor health diagnostics, graphical and data rich fault diagnostics, simple six-step setup & configuration and complete traceability of setting changes, enabling industrial facilities to maximize process up-time and optimize rated motor output.
- Motor Settings Auto-Configurator - automatically generate a complete settings file, eliminating the need to manually program hundreds of individual protection settings
- Enhanced Faceplate (E Option) - Improved LCD display with 40 easily visible characters and increased viewing angle
- Motor Health Report (E Option) - "See" how the motor is operating with comprehensive graphs and tables
- Enhanced Motor Learned Data (E Option) - Capture up to 250 sets of motor starting values to learn the starting characteristics of each motor
- Security / Change History Report (E Option) - Patented Security / Change History Report provides complete traceability of all settings changes |
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| The relay type STR is intended for the complete protection of high power motors, with medium voltage or low voltage supply. Several protection functions, incorporated in a single relay, assure the protection of the motor against all the different fault conditions: overheating caused by mechanical overload or by an abnormal supply, locked rotor, too long starting, interruption of one phase conductor, current unbalance, short circuit between phases, short circuit between turns, earth fault, underload running, too frequent startings. |
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7SD5 relay provides full scheme differential protection and incorporates all functions usually required for the protection of power lines. It is designed for all power and distribution levels and protects lines with two up to six line ends, to provide high-speed and phase-selective fault clearance.
Application
Differential protection with phase-segregated measurement
Sensitive measuring stage for high-resistance faults
Non-switched distance protection with 6 measuring systems
High resistance ground (earth)-fault protection for 1 and 3-pole tripping
Phase-selective intertripping
Tele (pilot) protection
Weak-infeed protection
Fault locator
Power swing detection/tripping
3-stage overcurrent protection
STUB bus protection
Switch-onto-fault protection
Over/undervoltage protection
Over/underfrequency protection
Auto-reclosure
Synchro-check
Breaker failure protection
Overload protection
Lockout function
Digital communication via
fiber-optic cables
digital communication networks
pilot wires or ISDN connections |
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The SIPROTEC 4 7UM61 and 7UM62 protection relays can do more than just protect. They also offer numerous additional functions. Be it earth faults, short-circuits, overloads, overvoltage, overfrequency or underfrequency asynchronous conditions, protection relays assure continued operation of power stations. They are compact units which has been specially developed and designed for the protection of small, medium-sized and large generators.
They integrate all the necessary protection functions and are particularly suited for the protection of:
Hydro and pumped-storage generators
Co-generation stations
Private power stations using regenerative energy sources such as wind or biogases
Diesel generator stations
Gas-turbine power stations
Industrial power stations
Conventional steam power stations.
The combination of functions incorporated in the 7UM62 also offers excellent all-round protection for transformers, large asynchronous motors, synchronous motors. |
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The SIPROTEC 7SJ602 is a numerical overcurrent relay which, in addition to its primary use in radial distribution networks and motor protection, can also be employed as backup for feeder, transformer and generator differential protection. It provides definite-time and inverse-time overcurrent protection along with overload and negative-sequence protection for a very comprehensive relay package. In this way, equipment such as motors can be protected against asymmetric and excessive loading.
Feeder protection
Overcurrent-time protection
Sensitive earth-fault detection
Directional sensitive earth-fault detection
Displacement voltage
Disk emulation
Overload protection
Breaker failure protection
Negative-sequence protection
Cold load pickup
Auto-reclosure
Trip circuit supervision
Motor protection
Starting time supervision
Locked rotor
Restart inhibit
Undercurrent monitoring |
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| The DTP-B is a digital relay that provides high-speed differential and backup instantaneous differential three phase protection functions for power transformers. Different models of the DTP are available for protecting and monitoring transformers with two, three or four windings. |
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| The relays type SSG are intended for the protection against overloads, short circuits and earth faults in radial networks, ring mains or variable structure networks. |
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The 7SD610 relay is a differential protection relay suitable for all types of applications and incorporating all those functions required for differential protection of lines, cables, transformers and busbars. Transformers and compensation coils within the differential protection zone are protected by means of integrated functions, which were previously to be found only in transformer differential protection. It is also well-suited for complex applications such as series and parallel compensation of lines and cables.
It is designed to provide protection for all voltage levels and types of networks; two line ends may lie within the protection zone. The relay features very high-speed and phase-selective short-circuit measurement. The unit is thus suitable for single-phase and three-phase fault clearance.
Digital data communication for differential current measurement is effected via fiber-optic cables, networks or pilot wires connections, so that the line ends can be quite far apart. |
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The A-ISOMETERฎ of the IR420 series is designed to monitor the insulation resistance of AC control circuits (IT systems) 0...300 V. If the systems to be monitored include DC components, such as switched-mode power supplies or solenoid valves, the display and operating characteristics may be affected.
The display and response values apply to pure AC systems. An external supply voltage allows de-energized systems to be monitored too.
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