Miller Electric Syncrowave 500 - Installation; Specifications; Duty Cycle; Volt-Ampere Curves

OM-350 Page 9
SECTION 2 – INSTALLATION
2-1. Specifications
Rated Welding Amperage
Maximum Open-
Circuit Voltage
Amperes Input at Rated Load Output,
60 Hz, Single-Phase
Output Range
Circuit Voltage
DC
200 V 230 V 460 V 575 V KVA KW
NEMA Class l
(60) – 500 Amperes,
40 Volts AC At 60%
Duty Cycle
25–625 80
206
(42*)
180
(36.5*)
90
(18.3*)
72
(14.6*)
41.4
(8.4*)
26
(1.3*)
* While idling
2-2. Duty Cycle
Duty Cycle is percentage of 10 min-
utes that unit can weld at rated load
without overheating.
If unit overheats, thermostat(s)
opens, output stops, and cooling
fan runs. Wait fifteen minutes for
unit to cool. Reduce amperage or
voltage, or duty cycle before
welding.
Y Exceeding duty cycle can
damage unit and void war-
ranty.
sduty1 5/95 / ST-059 427-B
60% Duty Cycle At 500 Amperes
6 Minutes Welding 4 Minutes Resting
ssb1.1 10/91 – ST-059 128-A
The volt-ampere curves show the
minimum and maximum voltage
and amperage output capabilities of
the welding power source. Curves
of other settings fall between the
curves shown.
2-3. Volt-Ampere Curves