Thermadyne CE CutMaster 75, Service Manual

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Manual 0-2869 3-1 DESCRIPTION
SECTION 3:
DESCRIPTION
3.01 Scope
The purpose of this section is:
• To familiarize the service technician with the capa-
bilities and limitations of the equipment,
• To provide an overall understanding which will al-
low the technician, in turn, to properly train cus-
tomer operating personnel.
3.02 General Description
The power supply provides 60 amp maximum output and
includes all control circuitry, electrical and gas inputs and
outputs, pilot circuitry, torch & leads, work cable with
clamp, and
input power cable.
A-02990
CutMaster 75 Power Supply
3.03 Specifications/Design Features
A. Power Supply Technical Specifications
The following specifications apply to the Power Supply
only:
1. Front Panel Controls
• Main Power ON/OFF Switch
• RUN/SET Switch
• Torch Leads
• Work Lead
• Output Current Control (A)
2. Front Panel LED Indicators
• AC
• TEMP
• GAS
• DC
3. Rear Panel Features
• Primary Input Power Cable
• Gas Pressure Regulator/Filter Assembly
• Gas Supply Connection
• Grounding Stud (CE Cutmaster 75 only)
4. Input Power*
• 208/230VAC (±10%), Single Phase
• 400VAC (±10%) Three Phase
• 460 VAC (±10%), Three Phase
• 460 VAC (±10%), Single Phase
• 600VAC (517-632 VAC), Three Phase
*refer to Appendix 1 for input wiring requirements.
5. Output Power
Continuously variable up to 60 amps maximum.
6. Duty Cycle (see NOTE)
NOTE
The duty cycle will be reduced if the primary in-
put voltage (AC) is low or the DC voltage is higher
than shown in the chart.
CutMaster 75 Power Supply Duty Cycle:
Ambient
Temperature
104° F
(40° C)
104° F
(40° C)
104° F
(40° C)
Duty Cycle
50% 60% 100%
Current
60 Amps 60 Amps 45 Amps
DC Voltage
109V 109V 98V
CutMaster 75, 208/230-Volt, 400-Volt,
and 460-Volt Power Supply Duty Cycle
Ambient
Temperature
104° F
(40° C)
104° F
(40° C)
104° F
(40° C)
Duty Cycle
50% 60% 100%
Current
60 Amps 60 Amps 43 Amps
DC Voltage
109 vdc 109 vdc 97 vdc
CutMaster 75, 600-Volt Power Supply Duty Cycle