SUPPLEMENT to Form 14-447
HELIARC® 350 POWER SOURCE
for 50 Hz. SERVICE
ESAB .................P/N 35597
L-TEC.................P/N 35600
F-14-454-A
October, 1995
I. General
This supplement covers the HELIARC 350 Power Source
designed for 220/380//415 Volt—50 Hertz service. It is
identical to the Heliarc 350 units covered in Form 14447 except for the following:
IMPORTANT
As shipped from the factory, all units are hookedup to operate from a 415 volt input. If your input
requirements do not match the factory-shipped provisions, 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 insert.
A. Replacement Parts:
Main Transformer (MTR) - P/N 30163 replaces
P/N 30577.
Terminal Board Assy. (TB) - P/N 30166 replaces
P/N 680047.
II. Form 14-447 is applicable to this unit ex-
cept as follows;
A. Revised Specification following.
SPECIFICATIONS
NEMA Rated Output @ 300 Amps @ 32 Volt s
60% Duty Cycle AC/DC, Tig/Stick
Open Circuit Voltage 79 VAC/72 VDC
Output Welding Current AC/DC
Current Low Range 5 K to 50 Amps
Range in High Range 20 to 380 Am ps
Amperes
Input Volt age 220/380/415 VA C
Input Current @ Voltage* 220 380 415
Rated Load in w/o P .F.C.* 117 68 62
Amperes w/o P .F.C.* 90 52 48
Power Factor @ w/o P.F.C.* Approx. 71%
Rated Load with P .F.C.* Approx. 88%
Auxiliary Power Output 115 VAC, 15 Amp, 50 Hz.
Dimensions Width 22-3/4-in. 578 mm
Weight Approx 620 lbs. 279 kg
* P.F.C. (power factor correction) is standard on these units.
K 3-amp. minimum with LOW AMP KIT, D.C. only.
Depth 32-in. 813 mm
Height 36-in. 914 mm
1 Ph, 50 Hz.
B. Revised T able for Recommended Input Conduc-
tors and Line Fuses
C. Primary V olt age Changeover Connections
As mentioned previously, the primary windings of
the main transformer are factory connected for 415
volt operation. 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 available primary voltage connections
which can be used.
Input Requirements Input & Gnd. Time-Delay
Volts 1 2 CU/AWG Amps.
Units Without Power Factor Correction.
220 117 169 No. 2/0 175
380 68 98 No. 3 125
415 62 89 No. 3 00
Units With Power Factor Correction.
220 90 130 No. 1 150
380 52 75 No. 4 100
415 48 69 No. 4 75
DC and AC balanced wave input current rating.
1
2
AC unbalanced wave input current rating.
* Sized per National Electric Code for 75° C rated conductors @ 30° C ambi-
ent using a 60% duty cycle based on the AC unbalanced wave ampere ratings. Not more than three conductors in raceway or cable. Local codes should
be followed if they specify sizes other than those listed above.
Amperes Conductor* Fuse Size
D. Wiring diagram — Use revised portions con-
tained herein.
E. Schematic Diagram — Use revised portions con-
tained herein.
Customer’s Input
Cable Connection
CUSTOMER HOOKUP
Double Links
Be sure this information reaches the operator.
You can get extra copies through your supplier.
Voltage Changeover Terminal Board (TB)
TB
VIEW "A-A"
Rotated 180°
MTR
MOUNTED ON TOP
OF HRTR
POWER FACTOR
CORRECTION
60UF
AT
440V EACH
C1
MTR
T3-2
C3
C2
T3-1
AX5 AX6
220V
ROS
L-2
T-2
1
FM
TB-1
207.4V
TB-8
189.3V
AH2
AH1
BX7
41.5V
F-14-454-A 10/95 Printed in U.S.A.
CUSTOMER HOOKUP
SHOWN IN 415 VAC
2
ROS
TB-4
TB-6
AH3 AH4
BX8
83V
Wiring Portions
L-3
ROS
TB3
220V
TB5
BH4
BH3
AX8
T-3
207.4V
TB7
BH2
41.5V
189.3V
TB2
BH1
AX7
Schematic Portions
T4-2
T4-5
POT
15K
CW
CCW
BX4
T1-3
BALANCE
MTR
BX3
15.0V
220V
BX5
BX6
AX8
AX10
BX10
BX9
T1-5
R101
221K
1%
AX3
AX4
15.0V
T1-4
F1
3A
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