SIEMENS frequency protection relays

... SIPROTEC 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 ...

The overcurrent and feeder protection relays can be used for line/feeder protection of high and medium-voltage networks with grounded, low-resistance grounded, isolated ...

... are a multi-functional motor protection relays. They are designed for protection of asynchronous motors of all sizes. Features The SIPROTEC 7SK80 features “flexible protection ...

... system after recovery of the system frequency. The SIPROTEC 7RW80 features “flexible protection functions”. Up to 20 additional protection functions can be created by the user. For ...

... 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 ...

... possible. Apart from the main protection function, i.e. the differential protection, the SIPROTEC 7SD610 has a full range of configurable emergency and / or back-up protection functions ...

... synchronising relay designed to carry out controlled closing of a circuit breaker using measurements of the line and bus voltages Features The relay will prevent the closure of a circuit breaker if ...

Trigger voltage: 64 V - 300 V

The Reyrolle 7SR158 Argus voltage and frequency relays are numerical, multifunctional devices, with functionality designed for connection to voltage transformers. The voltage and frequency ...