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OM-201 444 Page 12
SECTION 3 – INSTALLATION
3-1. Specifications
Amperes Input at Rated Load
Output, 50 or 60 Hz,
Three-Phase
Model
Rated Welding
Output
Amp Range
DC
Max OCV
DC
IP Rating
220 V 380 V 440 V KVA KW
SRH-500
500 A @ 40 Volts
DC, 50 Or 60 Hz,
35% Duty Cycle
A (Low)
(45 – 250)
B (High)
(60 – 500)
75 23M
103
5.5*
60
3.2*
51
2.7*
39.2
2.1*
27
0.8*
*While idling
3-2. Duty Cycle And Overheating
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
Y Exceeding duty cycle can
damage unit and void
warranty.
Overheating
0
15
V
OR
Reduce Duty Cycle
Minutes
duty1 4/95 / 201 171
35% Duty Cycle At 500 Amperes
3-1/2 Minutes Welding 6-1/2 Minutes Resting