2-2
S
PECIFICATIONS
Operator Manual
INTRODUCTION
The Powermax350 plasma cutting system uses a chopper power supply to cut mild steel, stainless
steel, aluminum and other metals. Cylinder air or shop air is used as the plasma gas. Air used for
plasma cutting must be clean, dry and oil-free.
This instruction manual provides information for the user to set up and operate the system and perform
limited maintenance on the torch and power supply. This manual also provides a detailed list of safety
practices so that the system can be safely operated and maintained. READ THE SAFETY SECTION
(Section 1) FIRST!
The Powermax350 service manual provides higher-level troubleshooting and a more complete parts
list.
SPECIFICATIONS
Power Supply
Rated Open Circuit Voltage (OCV) (U
0
) ........................ 255 VDC
Rated Output Current (I
2
) .............................................. 17–27 amps
Full Rated Output .......................................................... 27 amps at 91 VDC at 104
°
F (40
°
C)
Duty Cycle (X) at 40
°
C, at rated output
voltage (U
2
), and at rated output current (I
2
) ................. 35% (I
2
=27A, U
2
=91V)
60% (I
2
=21A, U
2
=88V)
100% (I
2
=17A, U
2
=87V) See power supply data
tag for more information on duty cycle.
Ambient Temperature and Duty Cycle .......................... Power supplies will operate b14
°
and
104
°
F (-10
°
and +40
°
C). Power supplies
operated in an ambient temperature above
86
°
F (30
°
C) may show some decrease in
duty cycle.
Apparent Input Power (S
1
) ............................................ 3.8 kVA
(U
1
I
1
) both non CE and CE power
supplies
Input Voltage (U
1
)/Input Current (I
1
)
at 2.25 kw Output .......................................................... 115/230V/33.3/17.8A 1-Phase, 60 Hz (Non CE)
115/230V/33.3/17.8A 1-Phase, 50 Hz (CE)
Dimensions ................................................................... See Figure 2-1.
Weight ........................................................................... 44 pounds (20 kg)
47 pounds (21.4 kg) with torch
Gas Requirements:
Gas Type ....................................................................... Air - clean, dry, oil-free
Supplied Air Pressure and Flowrate .............................. 70 -120 psi (4.8 - 8.3 bar) @ 270 scfh/4.5 scfm
(127 l/min) supplied to power supply pressure
regulator.
Power Supply Pressure Regulator Setting .................... 60 psi (4.1 bar) flowing
1-99
