TS 910 TRANSFER SWITCH
PM140 REV 2 14/01/23 5 Thomson Power Systems
Control wiring type and voltage rating must also comply with NEC requirements and
local jurisdictions having authority.
3.4.6 Generator Set Automatic Operation
The standard TS 910 transfer switch operates in conjunction with any generator set
with remote automatic starting capabilities utilizing a 2 wire, remote start control
contact input. A dry contact is provided for remote generator starting control (contact
closes to start generator and opens to stop generator).
Optionally available is a Universal Generator Interface kit (UGI) which allows the TS
910 transfer switch to be applied to multiple types of generator sets utilizing 240V
remote starting control systems. Additional information on the Universal Generator
Interface kit can be obtained from our Website (
www.thomsontechnology.com).
3.4.7 Upstream Overcurrent Protection (Non-Service Entrance Rated TS 910)
Non-Service Entrance Rated TS 910 transfer switch models do not contain any
integral over current protection and require upstream over current protection devices
for both Utility and Generator sources. The standard TS 910 series Automatic
Transfer Switch is rated for 100% system load and is suitable for control of motors,
electric discharge lamps, tungsten filament lamps, and electric heating equipment
where the sum of motor full-load ampere ratings and the ampere ratings of other
loads do not exceed the ampere rating of the switch and the tungsten load does not
exceed 30 percent of the switch rating. Refer to
Section 17 REQUIREMENTS FOR
UPSTREAM CIRCUIT PROTECTIVE DEVICES
of this manual for further details.
3.4.8 Upstream Overcurrent Protection (Service Entrance Rated TS 910)
Service Entrance rated TS 910 transfer switch models contain integral over current
protection for the Utility source as standard. Service Entrance rated TS 910 transfer
switches do not
contain any integral over current protection for the generator source
and requires upstream generator source over current protection. The Service
Entrance rated TS 910 is rated for 80% maximum continuous loading of all load
types. Refer to
Section 17 REQUIREMENTS FOR UPSTREAM CIRCUIT
PROTECTIVE DEVICES of this manual for further details.
3.4.9 Withstand/Interrupting Current Ratings
Refer to electrical ratings table shown below for withstand/Interrupting current ratings.
Withstand/Interrupting short circuit current ratings shown require use of specific
types/manufacturers of upstream molded case circuit breakers. Refer to
Section 17
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