User guide

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.