DOC. MIE91093 Rev. 1.34
Page 85 of 145
1.11.5 Pole mounted CB test programming
First of all, press ON and pre-set current (and voltage) values
such that the CB trips. Note that after this operation it is
necessary to wait until the internal memory of the Recloser
resets.
Next, set the fault injection as Maintained. Note that test
duration is N times the reclose delay, that can be in the range
of minutes, plus the wait time for the last reclose that should
not arrive, that is 10 times the last measured reclose delay.
This makes the test time rather long: if TD is three minutes,
test duration is more than 30 minutes.
TEST CONTROL > Fault injection > Maintained ESC
Next, select the Recloser test on the main menu as follows:
TD: on the first test, 1.05* TDr; on the second one,
0.95*TDr;
RECL NUMBER = N;
RECLOSER DELAY MEASURE FROM Ton;
One input: checked;
Breaker simulation: unchecked.
Next, select the save as Automatic at trip:
TEST CONTROL > Save > Automatic at trip ESC
Note that the test set will produce N+1 test result pairs.
Start the test with ON+TIME. For each fault X, the display
shows on one line two test results: to the right, the relay trip
delay; to the left, the reclose delay. Test result times are four
