CT-6500 Series 2 Operating Instructions
27
9.1 Timing a Circuit Breaker
The CT-6500 will initiate the breaker operation and do a timing test on the following
operations:
- OPEN
- CLOSE
- OPEN-CLOSE
- CLOSE-OPEN
- OPEN-CLOSE-OPEN
NOTE
1. The CT-6500 can start the OPEN-CLOSE operations without a delay or by using a
programmable delay between the OPEN and CLOSE commands.
2. The CLOSE-OPEN operation can be started by the CT-6500, using several options.
- Contact #1 Close
The CT-6500 can initiate a CLOSE command and then an OPEN command after
detecting the breaker’s contact was closed. The CT-6500 detects that the breaker’s
contact was closed through contact channel #1. The selection is recommended for
the CLOSE-OPEN operation since it truly represents when the circuit breaker
closed and then opened.
- Set DELAY
The CT-6500 can initiate a CLOSE command and then an OPEN command after a
programmable delay that can be set in milliseconds.
- No DELAY
The CT-6500 can initiate a CLOSE command and then an OPEN command
without any delay. Since the circuit breaker is in the open state, the circuit
breaker’s 52B contact allows the close coil to be energized, which can start the
close command. When the circuit breaker is making the transition from an open
state to a closed state, the 52A contact will close allowing the breaker to initiate
the open command.
3. The OPEN-CLOSE-OPEN operation can be initiated by the CT-6500, by using a
programmable delay between each of the operations, where the delays can be set between
the OPEN to CLOSE and between the CLOSE to OPEN commands.
Summary of Contents for CT-6500 2 Series
Page 22: ...CT 6500 Series 2 Operating Instructions 21 Figure 4 0 Series Contact Cable Connection...
Page 77: ...CT 6500 Series 2 Operating Instructions 76 APPENDIX F SIEMENS TCP Breaker Velocity Calculation...
Page 79: ...CT 6500 Series 2 Operating Instructions 78 APPENDIX H CT 6500 SIEMENS SPS2 Test Plan...
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