ABB RES670 Applications Manual page 177

1MRK 511 407-UEN C
Phasor measurement unit RES670 2.2 IEC
Application manual
The value of k=0.92 is recommended in generator applications as the trip delay is
normally quite long.
The calibration factors for current and voltage measurement errors are set % of
rated current/voltage:
IAmpComp5, IAmpComp30, IAmpComp100
UAmpComp5, UAmpComp30, UAmpComp100
IAngComp5, IAngComp30, IAngComp100
The angle compensation is given as difference between current and voltage angle
errors.
The values are given for operating points 5, 30 and 100% of rated current/voltage.
The values should be available from instrument transformer test protocols.
Section 8
Current protection
171