Supplement To Form 15-047
F-15-049
March, 1995
I. GENERAL
This supplement covers the Heliarc 250 AC/DC Power
Source with "power factor correction" specifically de-
signed for 220/380/415 Volt -- 50 Hertz service. It is
identical to the standard Heliarc 250 AC/DC (P/N 31310)
unit covered in Form 15-047 except for the following:
IMPORTANT
As shipped from the factory, all 50 Hz units are hooked-
up to operate from a 415 volt input. If your input require-
ments do not match the factory-shipped provision, the
following data should be heeded:
You must change the input terminal board (TB) volt-
age links to match your actual primary input voltage -
- as described in Section II-C of this supplement.
A. Replacement Parts:
Main Transformer (MTR) - P/N 31318 replaces P/N
31313.
Terminal Board Assy. (TB) - P/N 680434 replaces P/
N 680047.
Fan Motor (FM) - P/N 2062301 replaces P/N 2062340.
II. Form 15-047 is applicable to this unit except
as follows:
A. Revised Specification following:
Rated Output@ 250 Amps @ 30 Volts
40% Duty Cycle AC/DC, Tig/Stick
Open Circuit Voltage 79 Volts AC/72 Volts DC
Output Welding Current AC/DC
Current Low Range 5 to 60 Amps
Range in High Range 15 to 320 Amps
Amperes
Input Voltage 220/380/415 VAC,
1 Ph., 50 Hz.
Input Current @ Voltage 220 380 415
Rated Load in Amps Full Load 78 47 38
Power Factor @ Rated Load Approx. 76%
Auxiliary Power Output 115 VAC, 15 Amp., 50 Hz.
Dimensions: Width 16-inches 406 mm
Depth 30-inches 762 mm
Height 22-inches 559 mm
Weight 385 lbs. 175 kg
Input Requirements Input & Gnd. Time-Delay
Conductor Fuse Size
Volts Amps. CU/AWG Amps.
220 78 3 125
380 47 8 70
415 38 8 60
C. Primary Voltage Changeover Connections
As mentioned previously, the primary windings of the
main transformer are factory connected for 415 volt op-
eration. These connections are made by using
reconnectable links on the voltage changeover terminal
board for the main transformer. This unit's terminal board
(illustrated following) is silkscreened to show the avail-
able primary voltage connections which can be used.
Customer's Input
Cable Connection
I Double Links Provided
Voltage Changeover Terminal Board (TB)
D. Wiring Diagram -- Use revised portions contained
herein.
E. Schematic Diagram -- Use revised portions con-
tained herein.
Revised Table for Recommended Input Conductors
and Line Fuses.
Heliarc 250 AC/DC POWER SUPPLY
for 50 HZ. SERVICE
ESAB P/N 31320
L-TEC P/N 35623
Be sure this information reaches the operator.
You can get extra copies through your supplier.
2
3
1
220
7
415
220
380
415
220
L2
L1
380
