Single function relay

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Single function relay

Single function relay, include different protection relays such as voltage , frequency , short circuit , overcurrent ,stator earth fault relay and etc. these types of relays provide continuous surveillance of circuit. Single function relay, mainly cover one or two protective function , and if the measured value the monitored moves outside the set point limit , the relay will operate . The validate brands in producing Single function relays are DEIF and Ziegler Companies. Bornika is the exclusive agent of both Ziegler and DEIF companies in the fields of consultation , sales and distribution of power industry products including Single-function Protection Relay, is active.

Products

Ziegler AC Current Protection Relay

Current Protectors provide continuous surveillance of circuit . When the measured current the monitored moves outside the set point limit, the relay will operate . An adjustable time delay is provided to prevent the relay from tripping for a predetermined period to prevent nuisance tripping . For 3 phase systems , the sequence of connection is not important .

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Multi differential protection relay

The MDR-2 differential protection relay is a micro processor based control unit containing all necessary functions for monitoring of the differential currents for a synchronous/asynchronous generator or motor (the object). Via current transformers the MDR-2 measures each phase current on both sides of the object. The current transformers determine the limits of the protection area. Any failure within these limits (2- or 3-phase short circuits or earth leaks) will be detected as an error Id: Differential currents, the currents flowing through the two current transformers of the phase in question differ, and, if a preset limit value is exceeded, a warning will be given or a tripping signal transmitted. The MDR-2 dynamic compensation curves for warning and tripping are defined by the user.

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Voltage relay

The protective voltage relays types RMV-112D, RMV-122D and RMV-132D form part of a complete DEIF series of relays for protection and control of generators and are applicable to both marine and land-based installations. Also available are voltage relays for single phase measurement (RMV-142D). The voltage relays are applied for protection of generators, motors and transformers against adverse system voltage conditions.

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Ziegler AC Voltage Differential Relay

AC Voltage Differential Relay provides continuous surveillance of the monitored circuit . When the measured voltage moves outside the set point limit , the relay will operate giving an alarm and or initiation signal . An illuminated LED indicates when the relay is energised . The 3 Phase, 3 or 4 wire models protect each phase independently .

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Ziegler AC Voltage Protection Relay

AC Voltage Protection Relay provide continuous surveillance of circuit . When the measured voltage the monitored moves outside the setpoint limit , the relay will operate after the selected time delay , giving an alarm and or initiation signal . Relays normally energise on over volts and de-energise on under volts . An illuminated indicates when the relay is LED energised . 3 phase 3 or 4 wire models protect each phase independently.

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Frequency relay

The digital, combined under-frequency and over-frequency relay type RMF-112D forms part of a complete DEIF series of relays for protection and control of generators. The relay is type-approved by major classification societies and is applicable to both marine and land-based installations. The RMF-112D is applied for protection against under-frequency and over-frequency by supervising the frequency (of generators) in single phase and 3-phase networks.

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Short Circuit Relay

The protective current relays types RMC-111D, RMC-122D and RMC-132D form part of a complete DEIF series of relays for protection and control of generators. The relays are applicable to both marine and land-based installations. Also available are differential current relays (RMC-131D)

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Ziegler Frequency Relay

frequency protectors provide continuous surveillance of the monitored circuit . When the frequency moves outside the set point limit, the relay will operate giving an alarm , control or tripping single . An illuminated LED indicates when the relay is energised.

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Ziegler Combined Voltage and Frequency Relay

Combined Voltage and Frequency Relay provide continuous surveillance of the monitored circuit . When the voltage or frequency moves outside the set point limit the respective relay will operate giving an alarm, control or tripping signal . An illuminated LED indicates when the relay is energised .

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Differential current relay

The protective differential current relay type RMC-131D forms part of a complete DEIF series of relays for protection and control of generators, and is primarily designed for marine applications. The RMC-131D is type-approved by major classification societies and is applied for protection of for example generators in 3-phase networks against leakage currents.

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Stator earth fault relay

The protective stator earth fault relay type RMC-142D forms part of a complete DEIF series of relays for protection and control of generators. The RMC-142D is primarily designed for land-based installations. The RMC-142D is CE-marked and is applied for protection of voltage sources and load networks against earth fault in a solid earthing or a low-resistance earthing system.

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Loss of mains relay

The loss of mains relay type LMR-111D forms part of a complete DEIF series of relays for protection and control of generators. A mains failure will be detected, provided a disconnection at an arbitrary point of the network results in a swift change of the generator frequency (vector shift). An opening signal is then transmitted to the mains circuit breaker, and the generator will thus be protected against damages caused by an automatic reconnection to the high-voltage network.

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