Vanguard DigiTMR S2 User Manual
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REV 1 DIGITMR S2 USER’S MANUAL
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3.7.2. Timing an OPEN Operation WITH Insertion Resistors
The DigiTMR S2 can time breakers with insertion resistors. The insertion resistor can range from
10 to 7,000 Ohms. Any insertion resistor greater than 7,000 Ohms is detected as an open
circuit. When a breaker with insertion resistors is timed, the timing window results show the
main contact timing and the insertion resistor contact timing. The graphic reports also show the
main and the resistor contact activities on each of the channels. To time an OPEN operation
with insertion resistors:
a. Start from the “START-UP” menu:
Press the
[1]
key (TIME BREAKER) to start a test.
b. The following screen will be displayed:
Press the
[2]
key (YES).
c. The following screen will be displayed:
Select the resistor value by pressing the corresponding key (
[1]
,
[2]
, or
[3]
).
RESISTOR VALUE:
1. LESS THAN 1000 OHMS
2. 1000 TO 2000 OHMS
3. MORE THAN 2000 OHMS
INSERTION RESISTOR?
1. NO
2. YES
1. TIME BREAKER
2. GET RESULTS
3. SETUP
4. DIAGNOSTICS