Vanguard CT-7000 S3 - Manual (Page 56)

CT-7000 S3 USER’S MANUAL REV 1
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3.3.1. Timing an OPEN Operation
The CT-7000 S3 can time breakers with or without insertion resistors. The insertion resistance
can range from 10 to 5,000 Ohms. Any insertion resistance greater than 5,000 Ohms is detected
as an open circuit. The timing results will show the main contact time and the insertion resistor
contact time. Graphic reports will show the main contact and the resistor contact activities on
each of the channels. Use the steps below to time an OPEN operation.
a. When the unit is turned on and the firmware has been loaded, you will be presented
with the “START-UP” menu as shown below:
Press the [1] key (TIME BREAKER).
b. The following screen will be displayed:
Press the [1] key (TIME DRY CONTACTS).
c. The following screen will be displayed:
1. NO
Press the [1] key (NO) if you are timing a circuit breaker without insertion resistors.
Continue to step d.
2. YES
Press the [2] key (YES) if you are timing a circuit breaker with insertion resistors.
The following screen will be displayed:
INSERTION RESISTOR?
1. NO
2. YES
1. TIME DRY CONTACTS
2. TIME LIVE CONTACTS
1. TIME BREAKER 09/12/13
2. GET RESULTS 10:10:10
3. SAVE/RESTORE
4. SETUP
5. DIAGNOSTICS