RCD300M2 Ground Fault Relay
Ground Fault Relays The RCD300M2 residual current relay has been designed to provide sensitive ground fault protection without the problems associated with high sensitivity nuisance tripping. The RCD300M2 operates continuously and has the unique feature of a meter or interface with a PLC. This metering output signal gives the RCD300M2 both protective and predictive capabilities. By using the metering output, leakages can be seen as they occur and ground faults may be detected at an early stage before they become critical.
The RCD300M2 operates in conjunction with a Littelfuse LFCT series current transformer. The combination of the RCD300M2 measuring signal and the output signal from the C.T. provide the required resilience to electrical noise - the main cause of nuisance tripping.
The RCD300M2 can operate on grounded, high-resistance grounded and ungrounded power systems.. When a ground fault occurs, the RCD300M2 operates the leakage current output relay after the preset time delay. The RCD300M2 also continuously checks the connection to the C.T. If the C.T. circuit is broken, the RCD300M2 indicates "C.T. Fault" and operates the output relay. Due to its sensitivity, the RCD300M2 provides a high degree of network protection and personnel safety as well as minimizing the risk of fire.
Datasheet
- RCD300M2 - Download PDF (94 KB)