Railway
NPDT620 / NPDT630 – Transformer Differential Protection
Products family : Transformer Protection Sector : Industry, Railway The differential protection relays NPDT 620 and NPDT 630 are designed to provide fast and selective protection of 2 and 3-winding three-phase transformers. The relays can detect various types of fault such as phase-phase faults, inter-winding faults and earth-fault. Restricted earth-fault protection, on primary and secondary…
NPIH800 & NPIH800R – Earth Fault Overcurrent Relay
Products family : Transformer Protection Sector : Industry, Railway NPIH800 & NPIH800R provide the earth fault overcurrent protection for medium and high voltage electrical networks. These numerical and multi-function relays supervise in particular the phase to earth faults and the good operation of the circuit breaker and its trip circuit. NPIH800R (R2 case) is dedicated…
NPID800 / NPIDR800 & NPID800R – Phase and Earth Directional and Overcurrent Relay
Products family : Feeder Protection, Current Protection Sector : Industry, Railway NPID800 / NPIDR800 & NPID800R provide phase and earth fault overcurrent relays, with or without directional criteria, providing the detection of all type of short-circuits of medium and high voltage electrical networks. These numerical and multi-function relays supervise in particular phase to phase or…
NPU800 & NPU800R / NPU800RE – Voltage and Frequency Relay
Products family : Voltage Protection Sector : Industry, Railway NPU800 & NPU800R provide the voltage and frequency monitoring of electrical networks. These multi-function relays supervise phase to phase and phase to earth faults, positive, negative and zero sequence voltage and the good operating of the circuit breaker and its trip circuit. With its numerous under…