Optional Accessories; Safety - ESAB 653 cvcc Instruction Manual

SECTION 2
2.3.1 Power Source
The power source is a constant current/constant potential, Silicon Controlled Rectifier (SCR), three-phase, star-connected
transformer/rectifier type dc unit with solid state contactor and control circuitry. It provides the volt-ampere characteris-
tics desired for conventional MIG, flux core and submerged arc welding in the CV mode or stick welding and arc gouging
in the CC mode.
2.3.2 Volt-Ampere Characteristics
The curves shown in Figure 2-1 represent the volt-ampere static characteristics for the power source. The slant of these
curves is referred to as the "slope" and is generally defined as the "voltage drop per 100 amperes of current use". These
curves show the output voltage available at any given output current from the minimum to the maximum setting of the
voltage control. Because the volt-ampere slope is fixed, it is possible to select welding conditions by estimating the open-
circuit voltage required for the load current when operating in the CV mode.
60
50
40
30
20
MIN.
10
0
0 100 200 300
D.C. OUTPUT CURRENT (AMPS)
CV MODE FOR MIG/SUB ARC

2.4 OPTIONAL ACCESSORIES

2.4.1 TR-29 Truck Kit (Item No. 37924)
This truck kit provides complete mobility of the power source. The kit consists of castors, rear cylinder rack and wheels,
gas cylinder bracket, cylinder chain, and pull handle.
2.4.2 Swivel Mount Kit (Item No. 36172)
This kit allows ESAB wire feeders with swivel base mounts to be mounted to the top of the power source on an insulated
swivel mount. This allows the feeder to freely rotate, relieving potential wire feed problems while increasing the working
area of the torch.

2.5 SAFETY

Before the equipment is put into operation, the safety section at the front of this manual should be read completely. This
will help avoid possible injury due to misuse or improper installation.
The definitions relating to the:
safety notations are described at the end of the Safety Section in the front of this manual — read them and their spe-
cific text references carefully.
MAX.
700
400 500 600 800
AMPS
Figure 2-1. Volt-Ampere Curves
60
50
40
30
MIN.
20
10
0
0 100
900
CC MODE FOR STICK/ARC GOUGING/SUB ARC
19
DESCRIPTION
MAX.
200 300 400 500 600
AMPS
D.C. OUTPUT CURRENT (AMPS)
700 800 900 1000