Trip circuit protection relay PCS-974

for generatorsIEC

PCS-974 is a dedicated auxiliary relay for transformer nonelectrical protection. This IED provides sixteen high-powerpickup binary inputs for mechanical element monitoring, alarming and tripping. The high-power-pickup design reduces the risk of Electro-Magnetic Interference (EMI) in order to improve reliability. Generally, mechanical relays include winding temperature relays, oil temperature relays and buchholz relays. The relay can be used for transformer and generator protection. The PCS-974 is compatible with IEC 61850 station bus and process bus applications. It supports IEC 61850-8-1 MMS, GOOSE and IEC 61850-9-2 Sampling Value. The RJ-45 faceplate port is provided for testing and setting in effort to make commissioning and maintenance easier. • Up to sixteen channels of mechanical protection (26: oil and winding temperature; 63: gas, pressure; 71: oil level; etc • Self diagnostic • Event recorder including 1024 change-of-binary-input events, 1024 supervision events and 1024 operating logs • Clock synchronization using IRIG-B, SNTP, PPS (Pulse-Per- Second) and PPM (Pulse-Per-Minute) logs