KCG598E-TT Series

  • G99 Loss of Mains Protection for HV Distribution Networks
  • Complies with "Type Tested Interface Protection" requirements of G99 issue 1 part 10.1.4
  • Pre-configured alarm parameters, locked and PIN protected
  • Supervision Delay and Event Log
  • Digitally Controlled Operation
  • 1 Hz/s  ROCOF protection with averaging filter and 0.5s delay
  • Voltage, Frequency, Imbalance and Loss of Phase protection
The fully self-contained KCG598E-TT provides G99 protection against loss of mains conditions, critical voltage imbalance or loss of phase.

The DIN rail mounted digitally controlled unit meets the protection requirements for generators connected to mains supply, defined in ENA Engineering Recommendation G99.

Less wiring, no extra modules. Direct connection via terminal plugs and sockets, can be pre-wired by manufacturers of Power Generating Modules to reduce onsite test requirements. LEDs and open collector outputs indicate operating conditions 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
KCG598E-TT will provide the following protection:
  • 2 stage Over and 1 stage Under Voltage
  • 1 stage Over and 2 stage Under Frequency
  • Rate of Change of Frequency (ROCOF, df/dt)
  • Vector Shift disabled by default  (see note below)
  • Voltage Imbalance
  • Loss of Phase (<50ms, any phase <20V)

As Default, the Vector Shift is deactivated for G99 applications. The KCG598E-TT accommodates the new Distribution Code Review Panel's proposal for Vector Shift immunity.

Enhanced ROCOF protection provides adjustable averaging filter and 500ms delay for full compliance with the  G99 standard.

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