TS 840 TRANSFER SWITCH
PM057 REV 8 10/01/25
27
Thomson Technology
14.2.
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
TS84xA-0100
240
100
65,000
TS84xA-0150
240
150
65,000
TS84xA-0200
240
200
65,000
TS84xA-0250
240
250
65,000
TS84xA-0400
240
400
65,000
TS84xA-0600
240
600
65,000
TS84xA-0800
240
800
65,000
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.
15.
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.
15.1.
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.
The interconnected system shall be evaluated to ensure compliance with the appropriate
schematic drawings. The proper location of sensors and power cabling shall be
Содержание TS 840
Страница 2: ......
Страница 37: ...TS 840 TRANSFER SWITCH PM057 REV 8 10 01 25 33 Thomson Technology 19 NOTES ...