Main Power Switch S1 (36107) - ESAB Powercut 1600 Service Manual

SECTION 4 DESCRIPTION Of OPERATION
4.1

Main Power Switch S1 (36107)

The main Power Switch is located on the front panel of the unit and passes main input power to the unit.
The switch is a triple pole, single throw, rotary type switch, rated for 63 amps of input current at 690 VAC.
T6 current transformer, located on the B leg of the S1 output is used to monitor for a single phasing condi-
tion. See section 4.10.6 for more information.
4.1
Switch testing:
With power disconnected from the unit:
Switch open:
From pole L1 of the switch to T1 of the switch - open Or High resistance
From pole L2 of the switch to T2 of the switch - open Or High resistance
From pole L3 of the switch to T3 of the switch - open Or High resistance
Switch Closed:
From pole L1 of the switch to T1 of the switch low resistance or shorted
From pole L2 of the switch to T2 of the switch low resistance or shorted
From pole L3 of the switch to T3 of the switch low resistance or shorted
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