TCS-Supervision Module – Trip Circuit Supervision ANSI [74TC]
Commissioning: Trip Circuit Supervision for Circuit Breakers [74TC]
For CBs that trip by means of little energy (e.g. via an optocoupler), it has
to be ensured that the current applied by the digital inputs will not cause
false tripping of the CB.
Object to be tested
Test of the trip circuit supervision.
Procedure, part 1
Simulate failure of the control voltage in the power circuits.
Successful test result, part 1
After expiry of
»t-TCS«
the
trip circuit supervision
TCS
of the device should signal an alarm.
Procedure, part 2
Simulate a broken cable in the CB control circuit.
Successful test result, part 2
After expiry of
»t-TCS«
the
trip circuit supervision
TCS
of the device should signal an alarm.
Page 460
EN MRA4 04/09
Summary of Contents for SEG HighPROTEC MRA4
Page 1: ...MRA4 HighPROTEC Feeder Protection Device Manual DOK HB MRA4E...
Page 3: ...Order Code EN MRA4 04 09 Page 3...
Page 59: ...Navigation Operation Navigation Operation EN MRA4 04 09 Page 59 1 4 2 3 5 7 6 8 9...
Page 378: ...PQS Power Protection Module ANSI 32 37 Page 378 EN MRA4 04 09 P P Q P Q P Q Q Q P S S...
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