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OM-230 455 Page 10
SECTION 4 − INSTALLATION
4-1. Specifications For Power Source
Primary
Volts
Primary
Amperes
Duty
Cycle
Individual
Branch Primary
Service
(Recommended)
Secondary
Volts (DC)
Secondary
Amperes
KW KVA
Mild Steel
Rated
Cutting
Capacity
Power
Factor
Max**
OCV
(DC)
120 19 (0.25*) 35% 20A 110 12 2.01 2.27
1/8 in (3.2 mm)
At 10 IPM (4.2
mm/s)
0.82 375
*While idling
**10% High line condition
4-2. Specifications For Torch
Air-cooled torch for plasma arc cutting (PAC)
Gas flow/pressure: 1.1 SCFM (31.1 L/min) at 40 PSI (275 kPa)
Safety interlock devices shut down power source
Cutting capacity: see Section 4-1
4-3. Duty Cycle And Overheating
Duty Cycle is percentage of 10
minutes that unit can cut at rated
load without overheating.
If unit overheats, output stops.
Temperature trouble light goes On,
and cooling fan runs. Wait fifteen
minutes for unit to cool or
temperature light to go off. Reduce
duty cycle before cutting.
Y Exceeding duty cycle can
damage unit and void
warranty.
Overheating
duty1 4/95 − 804 852-A
3-1/2 Minutes Cutting 6-1/2 Minutes Resting
0
15
Minutes