IS-NT-Async-SPI, SW Version 1.2, ©ComAp – February 2011
IS-NT-Async-SPI-1.2.PDF
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Gen V del [ s ]
Delay for generator under and over voltage protection.
Step: 0,02 s
Range: 0,00 – 600,00 s
Gen >f [ % ] (FV)
Threshold for generator over frequency in % of nominal frequency.
Step: 0,1 %
Range: Gen<f – 150,0 % of Nominal freq
Protection: BreakerOpen & Cool-down.
Gen <f [ % ] (FV)
Threshold for generator under frequency in % of nominal frequency.
Step: 0,1 %
Range: 50,0 – Gen>f % of Nominal freq
Protection: BreakerOpen & Cool-down.
Hint:
The generator frequency is evaluated from the L3 phase.
Gen f del [ s ]
Delay for generator under frequency and over frequency protection.
Step: 0,02 s
Range: 0,00 – 600,00 s
Reverse power [ % ]
Threshold for generator reverse (back) power alarm in % of nominal power.
Step: 1%
Range: 0 – 50 % of Nomin power
Protection: BreakerOpen & Cool-down.
ReversePwr del [ s ]
Delay for generator back (reverse) power alarm.
Step: 0,1 s
Range: 0 – 600,0 s
EarthFaultCurr [ A ]
Threshold for generator Earth fault current protection. The value is measured via the 4
th
current terminal In /
Im3.
Step: 1 A
Range: 0 – 10000 A
Protection: BreakerOpen & Cool-down.
EthFltCurr del [ s ]
Delay for generator Earth fault current protection.
Step: 0,1 s
Range: 0– 600,0 s
Hint:
Earth fault current protection based on limits above is active only if I/E-Pm meas = ANALOG INPUT or
NONE.
Gen V unbal [ % ]
Threshold for generator voltage unbalance alarm in % of nominal voltage. The voltage unbalance is
calculated as a maximum difference between phase voltages.
Step: 1%
Range: 0 – 200% of GenNomV or GenNomVph-ph respectively
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