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NPU800 / NPU800R / NPU800RE - Digital Protection of phase voltage, frequency and/or homopolar

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Railway

NPU800 / NPU800R / NPU800RE - Digital Protection of phase voltage, frequency and/or homopolar

Voltage/Frequency Protection

NPU800, NPU800R and NPU800RE will ensure the monitoring of the voltage phase and/or frequency of electricity networks. These multifunction relays monitor faults between phases or between phase and earth, the voltages, direct, inverse, homopolar (according to the wiring) and also the proper functioning of the circuit breaker and its triggering circuit. The minimum and maximum voltage and frequency thresholds destine these relays for simple monitoring operations of the network and the management of loads and load shedding.

These functions associated with an R type modular unit, thus allow the NPU800R and NPU800RE to be used for quick replacement, by equivalence of function, of the relays in the CEE relays of the series 700 and 7000 (mechanical interchangeability.

Product family: 
Cable Arrival / Departure
ANSI code : 
27 - Undervoltage
27P - Positive sequence undervoltage
47 - Maximum of negative sequence voltage
59 - Overvoltage
59N - Maximum of zero sequence voltage
74TC - Trip circuit supervision of the breaker
81 - Over and/or under frequency
86 - Latching of the output contacts

NPU800R - NPU800RE

NP800 - NP800R RANGE


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