Hypertherm Powermax 65 Service Manual

TroubleshooTing and sysTem TesTs
5-12 powermax 65/85 Service Manual
Hypertherm IGBT tester
Use the Hypertherm IGBT (insulated gate bipolar transistor) tester (part number 128883) as described in the following
sections or assemble your own IGBT tester from the schematic diagram shown on page 5-15 Schematic for building an
IGBT tester and use it to test the IGBTs.
128884
Green “pass” LED
When illuminated, this LED indicates that the IGBT passed the test for an open IGBT when switch is
pressed to the right or for a short-circuited IGBT when switch is pressed to the left.
Red “fail” LED
When illuminated, this LED indicates that the IGBT failed the test for an open IGBT when switch is
pressed to the right or for a short-circuited IGBT when switch is pressed to the left.
Red “low battery” LED
When illuminated, this LED indicates that the remaining voltage in the battery is insufficient to power the
test circuitry. Replace the battery.
Note: The Hypertherm IGBT tester requires a minimum of 8 V to power its circuitry properly.
Indicator LEDs and device tests
Pass LED
(green)
Collector
(red)
Circuit
diagram
Fail LED
(red)
Test for
shorted IGBT
Low battery
LED (red)
Test for open
IGBT
Rocker
switch
Gate
(yellow)
Emitter
(black)

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