GE P742

P74x/EN CM/Na7
Commissioning
(CM) 10-20
MiCOM P741, P742, P743
CM
The measurement accuracy of the relay is ±5%. However, an additional allowance must be
made for the accuracy of the test equipment being used.
Cell in MEASUREMENTS 1 column (02)
Corresponding CT Ratio
(in ‘CT and VT RATIOS’ column (0A) of
menu)
[IA Magnitude]
[IB Magnitude]
[IC Magnitude]
[IN Magnitude]
[Phase CT Primary]__
[Phase CT Secondary]
TABLE 6: CT RATIO SETTINGS