TS 870 TRANSFER SWITCH
16.2.INTERRUPTING CAPACITY CURRENT RATINGS (ALL MODELS WITH
INTEGRAL OVERCURRENT PROTECTION OPTION)
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| RATED |
| INTERRUPTING CAPACITY CURRENT RATING AMPS (RMS) 1 | ||||
BASIC MODEL |
| MAX. |
| CURRENT |
| No Upstream Circuit Breaker Protection Required | ||||
|
| VOLTAGE |
| (A) |
| @240V |
| @480V |
| @600V |
600 | 100 |
| 65,000 | 25,000 | 14,000 | |||||
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600
150
65,000
25,000
14,000
240
200
65,000
N/A
N/A
600
250
65,000
35,000
22,000
600
400
65,000
50,000
25,000
600
600
65,000
50,000
25,000
600
800
65,000
50,000
25,000
600
1000/1200
65,000
50,000
50,000
1.Standard ratings only are shown. Consult Thomson Technology for versions with higher interrupting capacity current ratings.
2.For other model types not shown, contact Thomson Technology for further information.
17.GROUND FAULT SITE TEST REQUIREMENTS
Per NEC and UL1008, a ground fault protected system shall be performance tested when first installed on site. A written record of this shall be made and be available to the authority having jurisdiction. A form is provided at the back of this manual for this purpose – see Section 21.
Confirm and record actual trip setpoints in the form provided which is to be made available on request by inspection authority.
17.1.PERFORMANCE TEST
Qualified Field Service technicians require a calibrated current injection test apparatus and must be knowledgeable in breaker testing to provide primary neutral CT injection up to or greater than the trip setpoint as selected by the responsible party. As indicated in the NEC, the maximum setting of the ground fault protection shall be 1200 amps, and the maximum time delay shall be 1 second for ground faults equal to or greater than 3000 amps.
The inspection authority should be contacted to confirm actual test requirements as these may vary by region or local code requirements.
PM062 REV 5 08/05/05 | 28 | Thomson Technology |
