9-24 F650 Digital Bay Controller GE Multilin
9.17 THERMAL IMAGE ELEMENT (49) 9 COMMISSIONING
9
9.17THERMAL IMAGE ELEMENT (49)
Disable all protection elements except for Thermal Model (49).
Set the pickup level to 2 A.
Set the time constant î1 to 3 minutes and î2 t0 one time î1.
Apply currents of 2, 5, and 10 times the tap and ensure that the operation times are within the range described on the
following table:
After each measure, the thermal element must be reset to zero in order to start the next test at a zero thermal status
condition.
Repeat the test selecting a time constant î1 of 60 minutes. Verify that the operation time is within the range described on
the following table:
After each measure, the thermal element must be reset to zero in order to start the next test at a zero thermal status
condition.
RATED CURRENT (A) APPLIED CURRENT (A) TIMES DE SET TAP OPERATION TIME (S)
4.0 2 48.5 - 53.6
5 10.0 5 7.06 - 7.80
20.0 10 1.77 - 1.95
RATED CURRENT (A) APPLIED CURRENT (A) TIMES DE SET TAP OPERATION TIME (S)
4.0 2 960 - 1072
5 10.0 5 141 - 156
20.0 10 35.4 - 39
To Next Page
Loading...
Need help?
General
