Hypertherm XPR300 User Manual

Qualifications and Requirements
2
44 809480 Instruction Manual XPR300
Circuit breaker and fuse requirements
For main feed protection, choose a circuit breaker or fuse that is large enough to withstand all
branch-feed loads for both inrush and steady-state current. Refer to Table 6 on page 43 for the
recommended time-delay fuse sizes.
As an installer or user, you must choose time-delay fuses and circuit breakers that can withstand
inrush current that is up to 15 times the rated input current for 0.01 seconds and up to 10 times the
rated input current for 0.1 seconds.
The size requirements for breakers or fuses at your site can change because of the following:
 Local line conditions (such as source and line impedance and voltage fluctuations)
 Product inrush characteristics
 Regulatory requirements
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.

If time-delay, high-inrush fuses are not permitted at your site because of
national or local codes, use a motor-start circuit breaker or equivalent.
Main power cord requirements
As an installer or user, you must supply the main power cord for your cutting system. Refer to Table
6 on page 43 for recommended main power cord size.
The recommended main power cord sizes in Table 6 are based on Table 310.15 of the US National
Electric Code (2017 Handbook). Table 6 shows stranded-flexible cord rates for 90°C (194°F). The
size requirement for the main power cord at your site can change because of the following
conditions:
 Wires with lower temperature ratings
 Wires with different insulation types
 Different distances between the line-disconnect switch/receptacle and the plasma power
supply
 Local codes and regulations
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.

Hypertherm XPR300 Specifications

General

Cutting Current	300 A
Duty Cycle	100% at 300 A
Technology	X-Definition Plasma
Gas Supply	Oxygen, Nitrogen, Air
Cutting Capacity (Mild Steel)	38 mm (1.5 in)
Severance Capacity (Mild Steel)	75 mm (3 in)
Pierce Capacity (Mild Steel)	50 mm (2 in)
Input Voltage	200–480 V, 3-PH, 50/60 Hz