Trip-Free Test Tabulation
A-122 72A-1898 Rev. A 11/01
Monday, November 26, 2001 1:09 pm
Figure A.144 Dwell Times within a Circuit Breaker
OCB CONTACT TIMING
TRIP-FREE OPERATION
Trip-Free Dwell Time Within a Phase
Specifications | Test results | Compare
Maximum 88.0 mS | Phase A 33.7 mS | Pass
Minimum 17.0 | Phase B 34.0 | Pass
| Phase C 32.5 | Pass
Trip-Free Dwell Time Within the Breaker
Specifications | Test results | Compare
| Breaker 34.0 mS | Pass
Main Contact Closing Time Measured From Test Initiation
Specifications | Test results | Travel | Velocity | Compare
Maximum 333.0 mS | CONTACT1 130.1 mS | 11.570 in.| 13.23 f/s| Fail
Minimum 217.0 | CONTACT2 129.9 | 11.538 | 12.50 | Fail
| CONTACT3 130.5 | 11.639 | 13.23 | Fail
Delta Main Contact Closing Time Within the Breaker
Specifications | Test results | Compare
Trip-Free 6/11/1998 10:44 227 Big Tank Sub ME CG-38 Page 1 of 2
B
C