Section 4 − Installation; Specifications; Duty Cycle And Overheating - Unitor UWI 400 Owner's Manual

4-1. Specifications

Rated
Voltage
Welding Welding
Range Range
Output
300 A @
32 Volts DC, 10 − 35
60% Duty Cycle
*While idling

4-2. Duty Cycle And Overheating

Overheating
SECTION 4 − INSTALLATION
Maximum
Amperage
Open Circuit Open-Circuit
Range Range
Voltage DC
5 − 400 70
60% Duty Cycle
6 Minutes Welding
0
Minutes
Amperes Input at Rated
IP
Load Output 50/60 Hz
Rating Rating
380 V
21.0
23
(0.*)
4 Minutes Resting
15
OR
Reduce Duty Cycle
440 V KVA
19.0 12.4
(0.*) (0.09*) (0.04*)
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, output stops, a
Help message is displayed (see
Section 6-3), and cooling fan runs.
Wait fifteen minutes for unit to cool.
Reduce amperage or duty cycle be-
fore welding.
NOTICE − Exceeding duty cycle
can damage unit and void warranty.
A
Ref. SA-178 651
OM-202 137 Page 15
KW
11.5