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B-1
Read and understand this entire section before
operating your machine.
SAFETY INSTRUCTIONS
WARNING
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts
such as output terminals, electrode
or internal wiring.
• Insulate yourself from the work and
ground.
• Always wear dry insulating gloves.
------------------------------------------------------------
FUMES AND GASES
can be dangerous.
• Keep your head out of fumes.
• Use ventilation or exhaust to
remove fumes from breathing
zone.
------------------------------------------------------------
WELDING, CUTTING and
GOUGING SPARKS
can cause fire or explosion
• Keep flammable material away.
• Do not weld, cut or gouge on
containers that have held com-
bustibles.
------------------------------------------------------------
ARC RAYS
can burn.
• Wear eye, ear and body
protection.
------------------------------------------------------------
Only qualified personnel should operate this
equipment. Observe all safety information
throughout this manual.
OPERATION
GENERAL DESCRIPTION
The Invertec® V311-T AC/DC is an industrial 310 amp
arc welding power source that utilizes single or three
phase input power, to produce constant current out-
put. The welding response has been optimized for
stick (SMAW) and TIG (GTAW). The unit is ideal for
industrial applications where portability, high efficiency
and premium arc performance is important.
The Invertec® V311-T AC/DC is a power source that
can perform the following types of welding with excel-
lent results:
• TIG AC with square, sinusoidal and triangular
waveforms.
• TIG DC (with high frequency or Touch Start TIG
Starting)
• Stick DC & Stick AC
WELDING CAPABILITY
The Invertec® V311-T AC/DC is rated at 310 amps,
22.4 volts, at 40% duty cycle on a ten minute basis
when connected to a 460V three phase supply line. It
is capable of higher duty cycles at lower output cur-
rents. If the duty cycle is exceeded, a thermal protec-
tor will shut off the output until the machine cools. See
Technical Specifications in A-1 for other rated outputs.
The Invertec® V311-T AC/DC is recommended for
stick welding with such popular electrodes as
Fleetweld 5P and 5P+ (E6010), Fleetweld 35 (E6011),
Fleetweld 37 (E6013), Fleetweld 180 (E6011) and
Excalibur 7018.
LIMITATIONS
The Invertec® V311-T AC/DC is not recommended for
pipe thawing.
INVERTEC® V311-T AC/DC TIG
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