GE LPS-O - MEASURING UNIT TESTS; T1: Fault Detector Test; T2: IT Trip Supervision Test; T3: IB Blocking Supervision Test

GE Power Management LPS-O Line Protection System 6-
3
6 FUNCTIONAL TESTS (USER SETTINGS) 6.2 MEASURING UNIT TESTS
6
6.2 MEASURING UNIT TESTS 6.2.1 T1 – FAULT DETECTOR TEST
This test has fixed settings that are not user selectable. See Section 5.1.2: T1 – FAULT DETECTOR TEST on
page 5–2 for testing with factory settings.
6.2.2 T2 – IT TRIP SUPERVISION TEST
1. Protection Settings:
CURSUPVISN
(501)
IT_PICKUP
= [________] Amps
OVERCURRENT
(601)
50
= NO
(605)
50G
= NO
(610)
51G
= NO
LINEPICKUP
(801)
LINEPICKUP
= NO
where
I
T
is set as follows:
The test current,
I
op
, is single phase and applied to I
A
. Thus, the LPS-O should pick up when I
op
is greater
than or equal to
I
T
.
2. Connect the relay as shown in Figure 4–3: PHASE TO GROUND TEST CONNECTIONS on page 4–16.
3. Set the relay into test mode 18 (IT Detector). The LUI should display
IT DETECTOR ON
4. Set the voltages to zero.
5. Set the level of
I
op
to I
T
+ 0.1 = [________] A rms and apply to the relay. The A1 contact should close.
Lower
I
op
to I
T
– 0.1 = [________] A rms, at which point the A1 contact should open.
6. Reduce
I
op
to 0 A.
6.2.3 T3 – IB BLOCKING SUPERVISION TEST
1. Protection Settings:
CURSUPVIS
(502)
IB_PICKUP
= [________] Amps
OVERCURRENT
(601)
50
= NO
(605)
50G
= NO
(610)
51G
= NO
LINEPICKUP
(801)
LINEPICKUP
= NO
I
T
I
A
, I
B
, or I
C
=