Vanguard CT-6500 S2 - Manual (Page 31)

CT-6500 Series 2 Operating Instructions
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NOTE
One-second timing windows are used for breaker timing. The 10 and 20 second
timing windows are used for slower timing events (i.e. timing circuit-switchers).
The user can set the CT-6500 to print tabulated and graphical reports
automatically after it completes a test. See Paragraph 9.17 for the automatic print
setting.
9.1.3 Timing CLOSE-OPEN Operation Using Contact Channel #1
The CLOSE-OPEN operation of the breaker simulates a condition where a breaker is
closed on a fault. There are 3 choices for the user to setup the CLOSE-OPEN operation:
1. Contact #1 CLOSE
The CT-6500 will initiate a CLOSE operation. The Open operation is then
initiated after contact channel # 1 is closed.
2. Set DELAY
The user can set a delay from 10 to 500 ms between a CLOSE command
to the OPEN command. The CT-6500 will initiate the CLOSE operation and
start the delay counter. The OPEN operation will be initiated when the delay
time completes.
3. No DELAY
Both the CLOSE and OPEN commands are initiated by the CT-6500
simultaneously. The OPEN coil is energized when the Open auxiliary switch
makes.
NOTE
The CLOSE-OPEN command option “Contact #1 CLOSE” closely simulates the
breaker closing on a fault condition in the field.