Hypertherm XPR170, Instruction Manual

Page: 43 / 438

Qualifications and Requirements
2
XPR300 Instruction Manual 809480 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.
** Differences in cross-sectional diameters depend on the strand variations of each cable.

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 66.5 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)
078620 200
3
218 250 141.3 (4/0)
75.4
078621 208 209 250 141.3 (4/0)
078622 220 198 250 141.3 (4/0)
078623 240 181 225 111.9 (3/0)
078624 380 115 150 53.5 (1/0)**
078625 400 109 150 70.5 (1/0)**
078626 415 105 125 43.2 (2)
078627 440 99 125 43.2 (2)
078628 480 91 110 34.3 (3)
078629 600 73 90 27.3 (4)