User Supplied Connectors; Output Connections; Work Cable Connection - Lincoln Electric SQUARE WAVE SVM141-A Service Manual

A-6

USER SUPPLIED CONNECTORS

The Square Wave TIG 275 should be permanently
wired into the power system. No plugs or connectors
are necessary.

OUTPUT CONNECTIONS

WARNING
To avoid being startled by a high frequency shock, keep
the TIG torch and cables in good condition.
ELECTRIC SHOCK can kill.
• Turn the power switch of the power
source
adapters on cable or when connecting
or disconnecting adapter plugs to
power source.
See Figure B.1 for the location of the work and elec-
trode terminals, the gas and optional water solenoids,
and the Remote Receptacle.The Square Wave TIG
275 is equipped with Twist-Mate connectors for the
electrode and work connection.

WORK CABLE CONNECTION

The Twist-Mate connection allows fast and reliable
work cable attachment to the work terminal of the
Square Wave TIG 275 welding power supply.
Assemble the work cable by attaching the correct
Twist-Mate adapter and work clamp to an adequately-
sized welding cable. The Twist-Mate cable plug includ-
ed with the machine is designed to accept a welding
cable size of of #2 to #1. See Table A.1 and A.2 for rec-
ommended sizes and corresponding hardware.
TABLE A.1
Cable Sizes for Combined Lengths of Copper
Electrode and Work Cable
Lengths up to
Machine Size 100 ft
275 Amp
#1 (42.4mm 2 )
40% Duty Cycle
TABLE A.2
Recommended Work and Stick Electrode
Components
Twist Mate Twist Mate Twist Mate
Cable Plug Cable Plug Cable Plug
for Work for Work for Work
Lead Lead Lead
(#2 to #1) (1/0 to 2/0) (2/0 to 3/0)
K852-50 K852-70 K852-95
INSTALLATION
"OFF" before installing
100 to 200 ft 200 to 250 ft
1/0 (53.5mm 2 ) 2/0 (67.4mm 2 )
Work Electrode
Clamp Holder
K910-1 K909-4
SQUARE WAVE TIG 275
Assemble the correct Twist-Mate-adapter plug to the
work cable as follows:
1. Skin the cable jacket to 1.00 in (25.4 mm) for a #2
thru 2/0 (35 thru 70 mm2) cable. Skin the cable
jacket to 1.50 in (38.1 mm) for a 2/0 thru 3/0 (70 thru
95 mm2) cable.
2. If necessary, trim the cable end of the rubber boot to
match the diameter of the cable.
3. Slide the rubber boot onto the skinned cable end.
Use soap for lubricant if required.
WELDING CABLE
SEE
ABOVE
4. Slide the copper tube into the brass plug. Insert
skinned cable into the copper tube.
COPPER TUBE
5. Tighten set screw(s) to collapse copper tube.
Screw(s) must apply firm pressure against welding
cable.
6. Slide the rubber boot over the brass plug. The rub-
ber boot must be positioned to completely cover all
electrical surfaces after the plug is locked into the
receptacle. For more details see S18737PRINT or
instructions included with the adapter kit.
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BOOT
TRIM
SET SCREW
(70-95 SIZE MAY
HAVE 2 SET
SCREWS)
BRASS PLUG