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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 INTs are safety monitoring relays designed to be used
with the 300-BT switches. They are ideal for
machine guarding and meet CE Category 3 and 4.
INTs are force-guided FailSafe and DIN Rail mountable. |
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The SK-Series Control Relay is designed to be used in conjunction with safety elements such as Safety Contact Mats, Safety Contact Edges or Safety Contact Bumpers. The SK series relay utilized a current principle for monitoring the safety contact elements. This method of monitoring makes certain that the high demands for fault recognition as well as for safety are met. Relay switch status along with operating voltage status is displayed via LEDs. SK Series Relays are available in a variety of models depending on the application and conform to safety categories 2 and 3, EN 954-1 and are certified.
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| Relay of safety: relay of safety level 1, relay of safety level 2, relay of safety level 3, relay of safety level 4, relay of emergency stop, relay of Bi-manual order, relay of immaterial barrier, etc |
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The INTs are safety monitoring relays designed to be used with the
300-BT switches. They are ideal for machine guarding and meet CE
Category 3 and 4. INTs are force-guided FailSafe and DIN Rail mountable. |
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4 Pole safety relay with either 2 NO+2 NC or 3 NO+1 NC contacts
Forcibly guided contacts according to EN 50205
Rated current 8 A
High insulation distances for safe separation of electrical circuits
RoHS compliant (Directive 2002/95/EC)
Applications
Emergency shut-off, press control, machine control, elevator
and escalator control, safety modules |
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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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Planned to eliminate static electricity with a 6000 Volts
Technical Features:
It has an on/off switch with a luminous indicator to indicate net presence and protection in case of anomalies on the equipment.
The feeder can be put on the machine frame or on the wall; it is preferable that it is in front of the person in change of the machine so that the net led can always be seen. In case of short circuit directed to earth, the current is limited to a maximum of 100 milliampere.
The Feeder group must be earth connected either by assemblage on the machine already earthed or by a copper wire that connects the earth terminal that is placed on the feeder with the machine or with possible metallic earthed pipings. |
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| Comprehensive and scaleable bus and breaker fail protection for LV, HV and EHV busbars. The B90, a member of the UR Family, features integrated protection and breaker failure for re-configurable LV, HV, EHV multi-section busbars up to 24 feeders. Use one or more B90s together to build a sophisticated protection system that can be engineered to meet the specific application requirements. The B90 performs fast and secure low impedance bus protection with sub-cycle tripping time averaging 0.75 cycles. |
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| The MGC1000 are microprocessor based, digital type, generator protection relays which provide thermal protection for three phase generators, phase fault, ground fault, and unbalanced current protection. |
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