Vanguard DigiTMR User Manual download pdf (Page 35)

REV 3 DIGITMR USER’S MANUAL

3.6 Performing Diagnostic Tests

3.6.1. Performing a Slow-Close Test

The DigiTMR offers a unique feature called a “Slow-Close” test. This test can measure the

distance of a breaker’s contact travel from the fully open position to the contact “touch”

position and 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 the transducer channel 1 are used for the “Slow-Close” test.

The DigiTMR measures the contact touch and contact wipe for each contact channel. Contact

touch is the distance measured from the contact fully open to the first position where the

contact channel is electrically closed. Contact wipe, or penetration, is the distance measured

from the contact position first electrically closed to the final closed, latching position.

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.

d. The following screen will be displayed:

Manually close the breaker. As each contact is closed, the screen will be updated as

shown:

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. TIME BRKR 05/27/09

2. GET RSLT 10:49:23

3. SET-UP

4. DIAGNOSTICS

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Vanguard DigiTMR User Manual Page 35