Hypertherm HPR260 User Manual

HPR260XD Field Service Bulletin 808270 9
HPR260 and HPR260XD Transformer Wiring
3. Discard the wires that connect C3 to B1 and B3 to A1. See Figure 5.
Figure 5
4. Reuse the wires that wire connect C1 to C3, C2 to C4, B1 to B3, B2 to B4, A1 to A3, and A2 to A4 and install them
on the new transformer. See Figure 6.
 Use 1 piece of 75 mm (3 inch) heatshrink tubing (104423) on C2, B2, and A2.
 Use 2 pieces of 75 mm (3 inch) heatshrink tubing (104423) on each of these connection: C1, C3, B1, B3,
A1, and A3.
A4
A3
A2
A1
B4
B3
B2
B1
C4
C3
C2
C1
Discard C3 to B1 and B3 to A1
From main contactor
From main contactor

Hypertherm HPR260 Specifications

General

Input Frequency	50/60 Hz
Open Circuit Voltage (OCV)	300 VDC
Output Current	260A
Duty Cycle	100%
Cooling Method	Air-cooled
Protection Features	Overload, overvoltage, undervoltage