Hypertherm HD3070 Plasma Arc Cutting System w/ Automatic Gas Console - Manual (Page 275)

HD3070 with Automatic Gas Console Instruction Manual f-3
16
APPENDIX F
General
This appendix will enable a qualified electrician to install the power cable to the EMI filter on all CE 220/380/415
volt power supplies (078024).
Power Cable
The power cable is customer supplied. Refer to Power Cables on page 3-4 for cable information. Final
specification and installation of the power cable should be made by a licensed electrician and according to national
and local codes. Also, refer to Mains Supply on page f-2 for further power cable shielding recommendations.
Install Ring Terminals on to Power Cable Leads
1. Obtain four ring terminals that can be crimped on to the power cable leads. Terminal specifications are as
follows:
• Ring inner diameter 7.143 mm
• Current rating of 60 amps or higher.
2. Crimp ring terminals on to leads.
Connect Power Cable
Connect the power cable to the EMI filter first and then connect it to the line disconnect switch.
Power Supply
1. Locate the EMI filter at the lower right rear of the power supply (see Figure f-1).
2. Remove two screws to remove cover to access input voltage stud connections.
3. Remove nuts and and top washers from studs.
4. Insert the power cable through the strain relief.
5. Connect the leads to the U, V, and W studs and secure using nuts and washers. Ensure that all electrical
connections are tight to avoid excessive heating.
6. Connect the ground lead to the stud directly in front of ground symbol.
WARNING
High Voltage!
Ensure ring terminals are securely crimped on to leads to reduce chance of arcing and shorting.