Hypertherm XPR170 - Line-Disconnect Switch Requirements; Plasma Power Supply; Table 6 - Input Power Requirements

Qualifications and Requirements
2
XPR170 Instruction Manual 810060 43
Table 6 – Input power requirements
* AWG requirements must comply with the latest version of the US National Electric Code (in North America)
or the latest electric wiring and installation requirements (based on the codes in your location). Table 6 is for
reference only; the requirements for your location can be different. Follow all local and national electrical
codes in your location.

The strain relief for the input power cord that comes with the plasma
power supply is sized properly (refer to Table 6). Contact a licensed
electrician to make sure that your main power cord size and length meet
the codes in your location.
Plasma power supply
As an installer or user, you must connect the plasma power supply to one of the branch-feed
circuits. Use a separate, primary line-disconnect switch for the plasma power supply. Refer to
Line-disconnect switch requirements on page 43.
Always follow the local and national electrical safety requirements for your location, including
requirements for correct electrical system design and installation. Contact a licensed electrician for
more information about the codes in your location.
Line-disconnect switch requirements
As an installer or user, you must supply a separate, line-disconnect switch for the plasma power
supply. A means for disconnecting the cutting system shall be provided according to the installation,
safety, and emergency requirements for the local codes and regulations, taking into account the
input power requirements. Hypertherm does not supply this means of disconnection.
Part number
Input
voltage
(VAC)
Phase
Rated input
current at 35.7 kW
output
(A)
Recommended
time-delay fuse
size
(A)
Recommended size
for the main power
cord 90°C (194°F)
(mm
2
[AWG*])
Power
(kVA)
078640 200
3
117 150 70.5 (1/0)
40.48
078641 208 112 150 70.5 (1/0)
078642 220 106 150 70.5 (1/0)
078643 240 97 125 43.2 (2)
078644 380 62 80 27.3 (4)
078645 400 59 80 27.3 (4)
078646 415 56 70 17.2 (6)
078647 440 53 70 17.2 (6)
078648 480 49 65 17.2 (6)
078649 600 39 50 10.8 (8)