Areva MiCOM P225, Техническое руководство

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P225/EN TD/B11 Technical Specifications
Page 4/34 MiCOM P225
1.6 Earth fault protection
Current threshold Io>, Io>> 0,002 to 1 Ion by steps of 0,001 Ion
Time-delays tIo>, tIo>> 0 to 100 s by steps of 0,01 s
Operating time < 30 ms
Drop-off time < 30 ms
Hysteresis 95%
1.7 Under current protection
Current threshold I< 0,1 to 1 In by steps of 0,01 In
Time-delay tI< 0,2 to 100 s by steps of 0,1 s
Inhibition time at start-up T
inhib
0,05 to 300 s by steps of 0,1 s
Hysteresis 105%
1.8 Undervoltage protection
Voltage threshold V< Range A 5 to 130 V by steps of 0,1 V
Range B 20 to 480 V by steps of 0,5 V
Time-delay tV< 0 to 600 s by steps of 0,01 s
V< inhibition during start-up Yes/No
Hysteresis 105 %
1.9 Overvoltage protection
Voltage threshold V> Range A 5 to 260 V by steps of 0,1 V
Range B 20 to 960 V by steps of 0,5 V
Time-delay tV> 0 to 600 s by steps of 0,01 s
Hysteresis 95 %