Tweco C-70A CUTSKILL - Manual (Page 13)

Manual 0-4679 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 workpiece.
The metal to be cut is melted by the heat of the arc and
then blown away.
2.02 General Specifications
System Descriptions C-70A
Maximum Output 70 Amps
Input Voltage 230V
Single and
Three Phase
Input Voltage 400V CE Three Phase
Frequency 50/60Hz
Input Power 230V 1 Phase
Input Power 230V 3 Phase 67 Amps (15.4 kVA )
37 Amps ( 8.5 kVA )
Input Power Fuse, 1 Phase
Input Power Fuse, 3 Phase 230V - 80 Amp
230V - 40 Amp
Input Power 400V 24 Amps (9.6 kVA)
Input Power Fuse, 3 Phase 400V - 30 Amp
No Load Voltage 250V
Load Voltage 108V
Output Current 25-70 Amps
Post-Flow time 10 Seconds
Operating Air Pressure .5MPa (5 bar)
Maximum Air Pressure .86MPa (8.6 bar)
Air flow
400 scfh
6.6 scfm
(188.7 lpm)
System *Duty Cycle Ratings
at Ambient Air Temperatures
of 40° C / 104° F.
35% @ 70Amps
System *Duty Cycle Ratings
at Ambient Air Temperatures
of 40° C / 104° F.
60% @ 60Amps
System *Duty Cycle Ratings
at Ambient Air Temperatures
of 40° C / 104° F.
100% @ 50Amps
Maximum Cutting Capacity 1" (25mm)
Dimensions (W x D x H)
9.7" x 21.7" x 16.5"
(245 mm x 550 mm x
420 mm )
Net Weight 66 lbs. (30 kg)
60A
70A
35% (3.5 min)
60% (6 min)
100% (10 min)
OFF
OFF
CUT
CUT
CUT
Ar
t # A-0450
6
50A
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.
2.03 Features
• RELIABLE AND POWERFUL - This inverter
based power supply operates on standard 230V
single or three phase power.
• POWERFUL CUTTING PERFORMANCE -
Maximum cutting capacity is 1” (25mm).
• 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 SL100™
1Torch™ provides state of the art technology and
performance of more expensive torches.