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THEORY OF OPERATION
EE-2 EE-2
V160-S & -T
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NOTE: Unshaded areas of Block Logic
Diagram are the subject of discussion
FIGURE EE.2 – GENERAL DESCRIPTION, WELDING CAPABILITY & LIMITATIONS
INVERTER BOARD
W
05X0190
(SCHEMATIC X0190)
GND
DC-
DC+
W1
W2
INPUT BOARD
W05X0250
(SCHEMATIC X0203)
Y/G
BLACK
RED
W1DC-DC-
+
-
JP1
JP1
JP2
GND
AC2
AC1
BROWN
BLUE
BLACK
WHITE
S1
1
3
4
2
DC+
DC-A
115/230/1/50/60
Vac
GREEN
FAN
J1
WELD CONTROLLER
W
05X0233
(SCHEMATIC X0233)
D
ISPLAY BOARD
W05X0245
(SCHEMATIC X0245)
JP1
CW
R
EMOTE
C
ONNECTOR
WARNING HIGH VOLTAGE CAN KILL
• Do not operate with coers removed.
• Disconnect input power by unplugging
power cord before servicing.
• Do not touch electrically live parts.
• Only qualified persons should install,
use or service this machine
1
2
3
6
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6 7 8 9 10
26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8
D E C B A
METER BOARD
W05X0207
(SCHEMATIC X0207)
GENERAL DESCRIPTION
The V160-T is an industrial 160 amp arc welding power
source which utilizes single phase input power, to pro-
duce constant current output. The welding response
of this Invertec has been optimized for stick (SMAW)
and Touch Start TIG (GTAW). The unit is ideal for
industrial applications were portability is important.
The Invertec V160-T performs DC TIG with high fre-
quency or Touch Start Tig Starting with excellent
results.
WELDING CAPABILITY
The Invertec V-160-T is rated at 160 amps, 26.4 volts,
at 35% duty cycle on a ten minute basis. It is capable
of higher duty cycles at lower output currents. It is
capable of 130 amps, 25.2 volts at a 100% duty cycle.
If the duty cycle is exceeded, a thermal protector will
shut off the output until the machine cools. See
Technical Specifications in AA-2 for other related
outputs.
The Invertec V160-T is recommended for stick welding
with such popular electrodes as Fleetweld 35,
Fleetweld 37, Fleetweld 180 and Jet-LH 78 MR. It fea-
tures adjustable arc control to adjust the arc force and
start.
LIMITATIONS
The V160-S is not recommended for pipe thawing.