Hypertherm Powermax45 Bulletin De Maintenance page 4

Powermax45 Raw Arc Voltage Kit
Accessing raw arc voltage
Connecting a cable to the Powermax45 power board to bypass the voltage divider and access raw arc voltage must
be done by trained service personnel.
To access raw arc voltage on a Powermax45, you will need the strain relief in kit number 228352 and an 0.75 mm
(18 AWG), 2 wire, non-shielded cable similar to OLFLEX 190 (601802) in the length needed to go between the power
supply and the CNC or other equipment plus an additional 45.72 cm (18 inches) to connect inside the power supply.
1. On the end of the cable that will be attached to the power supply, strip the outer jacket 11.43 cm (4.5 inches). Cut
6.35 cm (2.5 inches) off of wire 2 so that wire 1 is 11.43 cm (4.5 inches) long and wire 2 is 5.08 cm (2 inches) long.
Then strip 1.27 cm (0.5 inches) of wire insulation off of each wire.
2. Crimp an M4 (#8) insulated ring on the end of wire 1 (negative lead) and an M5 (#10) insulated ring on the end
of wire 2 (positive lead).
3. Remove the 2 screws from the handle on the top of the power supply. Tip the end panels back slightly so that you
can get the edges of the handle out from underneath them. Lift the cover off the power supply. Remove the Mylar
barrier that protects the power board.
4. Separate the rear panel from the Powermax45 by removing the screw from the bottom and backing the panel away
from the base so that there is enough room to drill out the access point without risk of hitting the interior components.
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All manuals and user guides at all-guides.com
HIGH VOLTAGE AND CURRENT
SHOCK HAZARD, ENERGY HAZARD, AND FIRE HAZARD
Connecting directly to the plasma circuit for access to raw arc voltage
increases the risk of shock hazard, energy hazard, and fire hazard in the
event of a single fault. The output voltage and the output current of the
circuit are specified on the data plate.
WARNING!
Powermax45 Field Service Bulletin 806200
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