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Ground fault site test requirements, Interrupting capacity current ratings, Performance test – Technicolor - Thomson TS 870 User Manual

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TS 870 TRANSFER SWITCH

PM062 REV 5 08/05/05

28

Thomson Technology

16.2. INTERRUPTING CAPACITY CURRENT RATINGS

(ALL MODELS WITH

INTEGRAL OVERCURRENT PROTECTION OPTION)

INTERRUPTING CAPACITY CURRENT RATING AMPS (RMS)

1

No Upstream Circuit Breaker Protection Required

BASIC MODEL

MAX.

VOLTAGE

RATED

CURRENT

(A)

@240V

@480V

@600V

TS87xA-0100

600

100

65,000

25,000

14,000

TS87xA-0150

600

150

65,000

25,000

14,000

TS87xA-0200

240

200

65,000

N/A

N/A

TS87xA-0250

600

250

65,000

35,000

22,000

TS87xA-0400

600

400

65,000

50,000

25,000

TS87xA-0600

600

600

65,000

50,000

25,000

TS87xA-0800

600

800

65,000

50,000

25,000

TS88xA-1000/1200

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.