Tweco 81 CutMaster - Manual (Page 13)

Manual 0-2956 2-1 INTRODUCTION
SECTION 2:
INTRODUCTION
2.01 Scope of Manual
This manual contains descriptions, operating instructions and basic maintenance procedures for the Thermal Dy-
namics CutMaster 81 Plasma Cutting Power Supply only. Servicing of this equipment is restricted to properly
trained personnel; unqualified personnel are strictly cautioned against attempting repairs or adjustments not cov-
ered in this manual, at the risk of voiding the Warranty.
Read this manual thoroughly. A complete understanding of the characteristics and capabilities of this equipment
will assure the dependable operation for which it was designed.
NOTE
Refer to the Torch Manual for torch and cutting information.
2.02 Power Supply Specifications
Input Power Cable
Output Current
Power Supply Gas Filtering Ability
Ambient Temperature
IEC
Rating
TDC
Rating
IEC
Rating
TDC
Rating
IEC
Rating
TDC
Rating
Duty Cycle
Current
60A 60A 60A 60A 45A 45A
DC Voltage 104V 109V 104V 109V 98V 98V
Duty Cycle
Current
60A n/a 60A n/a 45A n/a
DC Voltage 104V n/a 104V n/a 98V n/a
Duty Cycle
Current
60A 60A 60A 60A 43A 43A
DC Voltage 104V 109V 104V 109V 97V 97V
208/230V
and 460V Units
400V Units
600V Units
Input Power
40° C (104° F)
20 - 60 Amps, Continuously Adjustable
Particulates to 20 Microns
CutMaster 81 Power Supply Duty Cycle*
50% 60% 100%
CutMaster 81 Power Supply Specifications
208 / 230 VAC (187 - 253 VAC), Single Phase, 50/60 Hz
400 VAC (360 - 440 VAC), Three Phase, 50/60 Hz
460 VAC (414 - 506 VAC), Single Phase, 60 Hz
460 VAC (414 - 506 VAC), Three Phase, 60 Hz
600 VAC (517 - 632 VAC), Three Phase, 60 hz
Cable for 208/230 VAC unit includes plug.
* NOTE: The duty cycle will be reduced if the primary input power (AC)
is low or the output voltage (DC) is higher than shown in this chart.
50% 60% 100%
50% 60% 100%
NOTE:
IEC Rating is determined as specified by the International Electro-Technical Commission. These specifications
include calculating an output voltage based upon power supply rated current. To facilitate comparison between
power supplies, all manufacturers use this output voltage to determine duty cycle.
TDC Rating is determined using an output voltage representative of actual output voltage during cutting with a
TDC torch. This voltage may be more or less than IEC voltage, depending upon choice of torch, consumables, and
actual cutting operation.