Ultra-cut 400, 01 installation requirements – Tweco 400 Ultra-Cut User Manual
Page 27

Manual No. 0-5164
3-1 INSTALLATION
ULTRA-CUT 400
SECTION 3: INSTALLATION
3.01 Installation Requirements
Electric Supply
The electrical supply network, the gas and water supply system must meet local safety standards. This
conformity shall be checked by qualified personnel.
Ultra-Cut 400 Power Supply
Input
Power Input Current
Suggested Sizes (See Note)
Voltage
Freq.
3-Ph
3-Ph
Fuse (Amps) Wire (AWG) Wire (mm
2
)
(Volts)
(Hz)
(kVA)
(Amps)
3-Ph
3-Ph
3-Ph
208
50/60
119
336
350
300MCM
150
230
50/60
119
304
350
250MCM
150
460
50/60
116
148
175
#1
50
380
50/60
120
183
225
1/0
70
400
50/60
120
174
225
1/0
70
* Suggested wire size based on United States NFPA 70 National Electrical Code 2005 edi-
tion published by the National Fire Prevention Association.
Listings are from table 400.5(B) for flexible cord of certain types rated for 75 deg C in
ambient temperatures up to 30 deg C. Using wires of lower temperature rating or differ-
ent insulation type may require larger wire size. Derate for higher ambient.
These are suggestions only. Always refer to your local and national codes that apply to
your region for final determination of correct wire type and size.
CAUTION
Fuse and wire sizes are for reference only. The installation must conform to national and local codes for
the type and method of wire being used.
Gas Supply
The customer must supply all gases and pressure regulators. Gases must be of high quality. Pressure
regulators must be double-stage and installed as close as possible to the gas console. Contaminated gas
can cause one or more of the following problems:
• Reduced cutting speed
• Poor cut quality
• Poor cutting precision
• Reduced consumables life.
• Oil or grease contamination from compressed or bottled air can cause fires in conjunction with oxygen.
Cooling System Requirements
Coolant must be added to the system on installation. The amount required varies with torch leads length.
Thermal Dynamics recommends the use of its coolants 7-3580 and 7-3581 (for low temperatures).