Tweco C-20A CUTSKILL - Manual (Page 11)

Manual 0-4677 2-1 Introduction
SECTION 2:
INTRODUCTION
2.01 Overview
Plasma is a gas which has been heated to an extremely
high temperature and ionized so that it becomes elec-
trically conductive. The plasma arc cutting process uses
this plasma to transfer an electrical arc to the work-
piece. The metal to be cut is melted by the heat of the
arc and then blown away.
2.02 General Specifications
System Description C-20A
Maximum Output 25 Amps @ 230V
Input Voltage & Phase
115 - 230,
Single Phase
Frequency 50/60Hz
Input power 2.4 (kVA)
Current Input fuse 20 Amps
No Load Voltage 330V
Load Voltage 88V
Output Current 120V 15-20 Amps
Output Current 230V 15-25 Amps
Post Flow Time 10 Seconds
Operating Air Pressure
65 psi (4.5 bar)
(.45 Mpa)
Maximum Air Pressure
125 psi (8.6 bar)
(.86 Mpa)
Air flow
400 scfh
6.6 scfm
(188.7 lpm)
System Duty Cycle Ratings*
at Ambient Air Temperatures
of 40° C / 104° F.
30% @ 20Amps
System Duty Cycle Ratings*
at Ambient Air Temperatures
of 40° C / 104° F.
60% @ 15Amps
System Duty Cycle Ratings*
at Ambient Air Temperatures
of 40° C / 104° F.
100% @ 10Amps
Cutting Capacity 115V
@ 20 Amps
1/4" (6mm)
Cutting Capacity 230V
@ 25 Amps
3/8" (10mm)
Dimensions (W x D x H)
8.3" x 20" x 14.8"
(210 mm x 510
mm x 350 mm )
Net Weight 44 lbs. (20 kg )
10A
15A
25A
30% (3 min)
60% (6 min)
100% (10 min)
OFF
OFF
CUT
CUT
CUT
Ar
t # A-0450
4
NOTE:
*Duty Cycle is the percentage of time the sys-
tem can be operated without overheating. Duty
cycle is reduced if primary input voltage (AC) is
low or the DC voltage is higher than shown in
previous chart.
Certain cutting conditions using 120V input
power may cause nuisance tripping of 20 Amp
Input fuse.
2.03 Features
• PORTABLE AND POWERFUL - Weighing just 44
lbs., (20 kg) it is easily moved from location to
location. This inverter based power supply auto-
matically links the unit to primary voltage from
115 to 230V single phase 50/60 Hz.
• POWERFUL CUTTING PERFORMANCE - 115V
cutting capacity is 1/4” (6mm) and for 230V it’s
3/8” (10 mm).
• CUTS MOST METALS - Useful for most metals
such as stainless steel, aluminum, mild steel, cop-
per and alloys.
• NO HIGH FREQUENCY - Starts without high-
frequency so it won’t interfere with controls or
computers.
• MORE TORCH, LESS MONEY - The SL60™
1Torch™ provides state of the art technology and
performance of more expensive torches.