Hypertherm Powermax 65 Operator's Manual

OPERATION
powermax 65/85 Operator Manual 4-15
Understanding duty-cycle limitations
The duty cycle is the amount of time, in minutes, that a plasma arc can remain on within a
10-minute period when operating at an ambient temperature of 104° F (40° C).
With a Powermax65:
• At 65A, the arc can remain on for 5 minutes out of 10 minutes without causing the unit to
overheat (50% duty cycle).
• At 59A, the arc can remain on for 6 minutes out of 10 (60%)
• At 46A, the arc can remain on for 10 minutes out of 10 (100%).
With a Powermax85:
• At 85A, the arc can remain on for 6 minutes out of 10 minutes without causing the unit to
overheat (60% duty cycle).
• At 74A, the arc can remain on for 8 minutes out of 10 (80%)
• At 66A, the arc can remain on for 10 minutes out of 10 (100%).
If the duty cycle is exceeded, the power supply overheats, the temperature fault icon appears in the
status screen, the arc shuts off, and the cooling fan continues to run. You can not resume cutting
until the temperature fault icon disappears and the fault LED goes off.

Hypertherm Powermax 65 Specifications

General

Open Circuit Voltage (OCV)	300 VDC
Gas Supply	Clean, dry, oil-free air or nitrogen
Maximum Cut Capacity (Mild Steel)	1" (25 mm)
Input Voltage	200-600 V, 1/3-PH, 50/60 Hz
Output Current	20 – 65 A
Duty Cycle	50% @ 65 A
Recommended Gas Inlet Flow Rate/Pressure	6.7 scfm @ 85 psi
Torch Lead Length	25 ft (7.6 m)
Maximum Cut Capacity (Aluminum)	5/8" (16 mm)
Severance Cut Capacity (Mild Steel)	1-1/4" (32 mm)
Maximum Severance Thickness	1-1/4 in (32 mm)
Gas Type	Air/Nitrogen
Torch Options	Hand Torch, Mechanized Torch