KCG591E - LOSS OF MAINS
PROTECTION RELAY - SINGLE PHASE 2-WIRE SYSTEM
- All-in-one unit, the COMPLETE solution
- G99 Loss of Mains Protection
- Adjustable Supervision Delay
- Cause of Trip LEDs and Event Log
- Digitally Controlled Operation
- Complies with the new G99 for ROCOF protection (Vector shift is deactivated)
- Tamper Proof configuration via the HHP1, HHP2 or via PC (HHP2 only)
Description
The fully self-contained KCG591E provides precision protection against malfunction and human and operational hazards under loss of mains conditions.
The DIN rail mounted digitally controlled unit meets the protection requirements for generators connected to mains supply, such as defined in the G99 and similar recommendations.
Less wiring, no extra modules. Operating mode is selected by simple auxiliary contacts on the generator breaker and on the mains breaker. LEDs and open collector outputs indicate operating mode and "First Up" cause of trip.
State-of-the-art digital technology throughout, with quartz-controlled Loss of Mains detection. True RMS measurements.
Loss of Mains Protection
KCG591E will provide the following protection:
- 2 stage Over and Under Voltage
- 2 stage Over and Under Frequency
- Rate of Change of Frequency (ROCOF, df/dt)
- Vector Shift (step phase angle) (see note below)
- Loss of Phase (<50ms, any phase <20V)
Note:
As Default, the Vector Shift is deactivated for G99 applications. The KCG59x accommodates the new Distribution Code Review Panel's proposal for Vector Shift immunity.
Enhanced ROCOF protection now provides adjustable averaging filter and 500ms delay for full compliance with the new G99 standard.
