Hypertherm HT4001 Plasma Arc Cutting System - Manual (Page 51)

Ground
(PE)
L1
L2
L3
CON1
Power
Cable
Strain
Relief
Power Cable to HT4001 Power Supply
To connect the power cable to the 400V CE power supplies (077022 and 077023), refer to
Appendix C. To connect the power cable to the 200/220V power supplies (077002 and
077016), refer to Appendix D. For all other power supplies, use the procedure below.
1. Insert the Power Cable through the Strain Relief located in the rear of the power supply.
2. Connect the power leads to the L1, L2, and L3 terminals of CON1. See Fig. 3-9.
3. Connect the Ground (PE) lead to the stud as shown in Fig. 3-9.
Connecting the Power
16
PRE-INSTALLATION
HT4001
Instruction Manual 3-11
Figure 3-9 Power Cable Connections
WARNING
There is line voltage at the contactors after the line disconnect switch is ON, even if the circuit breaker
on the HT4001 power supply is OFF. As a common safety practice, ALWAYS verify that the line
disconnect switch is in the OFF position before installing,
disconnecting or servicing in these areas.
WARNING
The line disconnect switch must be in the OFF position before making the power cable connections! In
the U.S., use a “lock-out/tag-out” procedure until installation is complete. In other countries, follow
appropriate local or national safety procedures.