Tweco 6000GST Cutting Systems - Manual (Page 16)

INTRODUCTION 2-2 Manual 0-2690
3. Torch Ratings
Ambient
Temperature
104° F
(40° C)
Duty Cycle
100% @ 300 Amps @ 0.5 gpm
(1.89 lpm) Coolant Flow Rate
Maximum Current 300 Amps
Voltage (V
peak
) 500V
Arc Striking Voltage 12 kV
Torch Ratings
4. Cutting Range
• Production speed cutting:
3/4 inch (19 mm) at 150A
1 inch (25.4 mm) at 300A
• Maximum capacity when edge starting:
2 inch (50.8 mm)
5. Pierce Rating
3/4 inch (19 mm) at 150A
1 inch (25.4 mm) at 300A
6. Transfer Distance
3/8 inch (10 mm)
7. Torch Parts
Gas Distributor, Electrode, Tip, Shield Cup Body,
End Cap
8. Plasma Gas Requirements
a. Plasma Gas: Compressed Air, Oxygen (O2),
Nitrogen (N2), or Argon/Hydrogen (Ar/H2)
b. Pressure: 75 to 100 psi (5.2 to 6.9 bar)
CAUTION
Maximum input gas pressure must not exceed 125
psi (8.6 bar)
c. Cold Flow - Cutting: 60 to 135 scfh (28.3 to
64.6 lpm)
scfh = standard cubic feet per hour
NOTE
Cold flow is measured before the main arc is acti-
vated. When pressure is set correctly the plasma
gas flow rate is significantly lower when the arc is
initiated.
9. Secondary Gas Requirements
a. Secondary Gas: Compressed Air, Carbon Di-
oxide (CO
2
) or Nitrogen (N2)
b. Pressure: 15 to 80 psi (1.0 to 5.5 bar)
CAUTION
Maximum input gas pressure must not exceed 125
psi (8.6 bar)
c. Flow - Cutting: 15 to 400 scfh (7.1 to 189 lpm)
scfh = standard cubic feet per hour
10. Secondary Water Requirements
a. Water Source (See Notes): Clean drinking
quality tap water can be used as a secondary
b. Water Pressure: Minimum 50 psi (3.5 bar)
c. Water Flow - Cutting: 3 - 9 gph (13 - 40 lph)
NOTES
Tap water should only be used as a secondary on
machine torches.
The tap water source does not need to be deionized,
but in water systems with extremely high mineral
content a water softener is recommended.
Tap water with high levels of particulate matter
must be filtered.
11. Preflow Gas Requirements
a. Preflow Gas: Nitrogen is the only recom-
mended preflow gas
b. Pressure: 90 to 115 psi (6.2 to 7.9 bar)
CAUTION
Maximum input gas pressure must not exceed 125
psi (8.6 bar)
c. Flow - Cutting: 42-85 scfh (19.8 to 40.1 lpm)
scfh = standard cubic feet per hour
12. Weight (without leads)
2.0 lb (0.91 kg)