SIEMENS phase protection relays

The line differential protection SIPROTEC 7SD80 has been conceived for selective line protection of power cables and overhead lines up to 24km for all kind of starpoint configurations. The implemented ...

... Reyrolle 7SR45 numeric relay provides both definite time and inverse time overcurrent and earth fault protection functions ensuring sensitivity with a minimum operate setting of 0.2 ⋅ ...

... ,7SR21 and 7SR22 Argus overcurrent protection devices have been specifically designed to provide feeder protection for distribution and industrial networks. Features The Reyrolle ...

... and reactor protection schemes. Relays are housed in size E8 or E10 cases. Integrated logic is provided to allow the optimal configuration of relay functionality with the relays ...

... circulating current relay that has four current inputs, it is used as a unit protection to detect phase and earth faults. Features The relay can be applied to busbars, ...

... system 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 ...

Trigger voltage: 64 V - 300 V

... secondary line and phase voltages •Historical demand record •Positive phase sequence (PPS) voltage •Negative phase sequence (NPS) voltage •Zero phase sequence (ZPS) ...