Vanguard CT-8000 - Manual (Page 101)

REV 2 CT-8000 USER’S MANUAL
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4.0 DIAGNOSTICS, VERIFICATION, AND TROUBLESHOOTING
4.1 Performing a Slow-Close Test
The CT-8000 offers a unique “Slow-Close” test feature. This test measures the distance a
breaker’s contact travels from the fully opened position to the point of contact or “touch”
position, and the contact wipe or penetration distance. The test requires the operator to
manually jack the breaker’s contact from the fully open position to the fully closed position.
Contact channels 1, 2, and 3 and transducer channel 1 are used for “Slow-Close” testing. The
CT-8000 measures the contact touch and contact wipe for each contact channel. Contact touch
is the distance measured from the contact being fully open to the first position where the
contact channel is electrically closed. Contact wipe, or penetration, is the distance measured
from the contact’s first electrically closed position to the final closed, latching position.
Follow the steps below to perform a “Slow-Close” test:
a. Start from the “START-UP” menu:
Press the
[4]
key (DIAGNOSTICS).
b. The following screen will be displayed:
Press the [1] key (SLOW CLOSE TEST).
c. The following screen will be displayed:
Press the
[ENTER]
key to begin the test.
d. The following screen will be displayed:
Manually start closing the breaker.
CONTACT 1: OPEN
CONTACT 2: OPEN
CONTACT 3: OPEN
LIFT TO CLS BRKR NOW
BRKR SLOW CLOSE TEST
RMV CB GND (1 SIDE)
“ENTER” TO BEGIN
1. SLOW CLOSE TEST
2. CHECK HOOKUP
3. TEST TRANSDUCER
4. NEXT PAGE
1. RUN TEST 03/10/10
2. GET RSLT 09:04:05
3. SETUP
4. DIAGNOSTICS