Transfer Switches With Integral Over Current Protection; Transfer Switches With Multi-Tap Voltage Capability - THOMSON TS 880 Service Manual

Automatic transfer switches
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3.2.

TRANSFER SWITCHES WITH INTEGRAL OVER CURRENT PROTECTION

For models of transfer switch with integral over current protection, the over current
protection must be set prior to operation. The equipment will be shipped from the factory
with a long-time current setting of 100% (of the equipment rating) and maximum short-
time/instantaneous current and time delay settings.
Refer to
Section 5.2.2
switch following an over current trip condition.
Refer to information supplied with the transfer switch documentation package for
adjustment procedures on the power switching units over current protection trip unit.
Contact the factory if any additional information is required.
3.3.

TRANSFER SWITCHES WITH MULTI-TAP VOLTAGE CAPABILITY

If the transfer switch has programmable multi-tap voltage capability (refer to engineered
drawings), confirm the transfer switch has been configured for the correct system voltage
prior to installation.
The voltage selections and connections are shown on the engineered drawings attached to
each transfer switch. The factory default settings will be indicated on the calibration label
attached on the inside of the enclosure door (supplied loose on open style models). A
blank label is included to record the applicable settings if the configuration is changed from
the factory default settings.
To change the transfer switch configuration the following must be accomplished:
PM064 REV8 10/01/25
TS 880 TRANSFER SWITCH
WARNING!
Do Not Energize this equipment until
device settings have been verified to
ensure proper system protection &
coordination.
Failure to do so may
result in equipment failure.
of this manual for additional information on operation of the Transfer
WARNING!
Failure to confirm and match transfer
switch voltage with the system voltage
could cause serious equipment damage.
3
Thomson Technology

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