SIEMENS RS485 protection relays

The Reyrolle 7SR511 overcurrent device includes a wide range of protection functions and IEC 61850 Ethernet communications as standard. Features & functions The large LCD, tactile pushbuttons and ...

... Functions Standard Functionality can include •24 Overexcitation protection •27 Undervoltage protection – 3 phase •27Vx Undervoltage protection – Vx •37 Undercurrent protection ...

... 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 ⋅ ...

... phase sequence overcurrent (46NPS) •Thermal overload (49) •Instantaneous overcurrent protection (50) •Instantaneous earth fault (50N/G) •Time delayed overcurrent ...

Tripping current: 1 A - 5 A
Trigger voltage: 19 V - 275 V

Our differential protection relay, Reyrolle7SR18, is a numeric three phase differential protection relay used to detect in zone phase and earth faults. This differential ...

... 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 ...

Trigger voltage: 18 V - 300 V

... and 7SR105 motor protection devices are specifically designed to protect motors during all starting and running sequences. Features The device is housed in a 4U high, size 4 non-withdrawable case and these 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, connections, ...

... 7SR157 Argus is a combined check and 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 ...

Trigger voltage: 64 V - 300 V

... frequency. Relays have three voltage inputs, six binary inputs and eight binary outputs and are housed in a size E4 case. Programmable logic is provided to allow the optimal configuration of relay ...