ISA T1000 PLUS User Manual page 36

DOC. MIE91093
. The relay has a nominal power PN; the threshold is a
percentage of PN, P%. From PN compute the nominal current
IN = PN *1.73/ VN.
NOTE: in case of three phase relay, IN shall be divided by
three.
. Connect the TRIP output to the STOP input.
. Set the timer with the following selections:
Timer start/stop > START > INT (RET)
NOTE: stop clean or voltage according to the relay trip contact
connections.
. Next step serves to ascertain that the relay is correctly
connected; to this purpose we perform two tests in opposite
directions. The angle between current and auxiliary voltage is
set as follows.
AUX VAC/VDC > Aux VAC control > Phase > Reference :
Current > (adjust phase) ESC
NOTE: the adjustment can be performed only after having
adjusted the current output. The two tests are:
 Forward:
I = IN;  = 0°. Press ON+TIME: the relay should not
trip.
 Reverse:
I = IN:  = 180°. Press ON+TIME:
trip.
Only if the result of the direction test is correct we can proceed
with other tests.
. Next steps are the search of the points of the P-Q curve we
have selected. The key test is performed at 180°; additional
tests are decided by the operator. In general, it is wise to
execute at leas two more tests, in order to ascertain that the
curve corresponds to the nominal one. In our example we will
test at 180° (P%); 120° (P1); 240° (P2).
Rev. 1.34
STOP > EXT > Clean (Voltage) (RET)
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Edge ESC
the relay should