Alstom MBCH16 - Section 6 COMMISSIONING TEST RECORD; Relay Settings Recording; Operating Time Measurement; Bias Check Measurements

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Section 6 COMMISSIONING TEST RECORD
PROTECTION RELAY TYPE MBCH Date _________________________________
Station _______________________________ Transformer ___________________________
Biased Differential Transformer Serial No. _____________________________________________
Relay Model No _______________________
Relay Serial Nos. Phase A__________________ Phase B ___________ Phase C ___________
DC Auxiliary Voltage Vx ___________________ Relay Rated Current In
3.2.2 Measure dc auxiliary voltage Vx __________V
3.2.3 Relay settings Is
Phase A Phase B Phase C
0.1 x In __________ __________ __________ A
0.2 x In __________ __________ __________ A
0.3 x In __________ __________ __________ A
0.4 x In __________ __________ __________ A
0.5 x In __________ __________ __________ A
Check trip contacts operate __________ __________ __________ A
Check alarm contact operates __________ __________ __________ A
3.2.4 Operating Time
3.5 x In __________ __________ __________ ms
4.5 x In
__________ __________ __________ ms
3.2.5 Bias check (setting 0.2 x In)
3.2.5.1 Current A1 0.6 x In
Measured differential current __________ __________ __________ A2
3.2.5.4 Current A1 1.7 x In
Measured differential current __________ __________ __________ A2