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.
YExceeding 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