ESAB Digipulse 450i Power Source for 575-Volt Service Instruction manual

SUPPLEMENT to Form 15-014

F-15-015

June, 1995

DIGIPULSE 450i POWER SOURCE for 575-VOLT SERVICE

Part No. 31238

I. General

This supplement covers the Digipulse 450i Power Source spe­cifically designed for 575 Volt — 60 Hertz service. It is identi­cal to the standard Digipulse 450i, P/N 31120 unit covered in
Form 15-014 except for the following:

IMPORTANT

As shipped from the factory, all 575-volt units are hooked­up to operate “only” from a 575 volt input. This unit “does
not” contain a Voltage Changeover Input Terminal Board
assembly.

A. Replacement Parts:

Main Transformer Assy. (MTR) - P/N 31685 replaces P/N

31133.
Control Transformer Assy. (MTR) - P/N 31686 replaces
P/N 31134.
Power P.C. Board Assy. (PB1 and PB2) — P/N 31423 re­places P/N 674991.
Capacitors (C5 and C6) — P/N 672348 replaces 950516.

II. Form 15-014 is applicable to this unit except as

follows:

A. See Revised Specification Table following.

B. See Revised Table for Recommended Input Conduc-

tors and Line Fuses.

F-15-015

Note that the customer can either use the factory supplied
input power cable (No. 6 AWG, 4/c, type SO, 90° C, 12-ft. lg.),
or provide his own leads per the Input Table.

Rated Input Input & Gnd. Time-Delay

Conductor Fuse Size

Volts Amps CU/AWG Amps

575 32 8 50

* Sized per National Electric Code for 90° C rated copper conductors @ 30° C

ambient. Not more than three conductors in raceway or cable. Local codes
should be followed if they specify sizes other than those listed above.

SPECIFICATIONS

Rated Output @:

60% Duty ........................................... 450 amps @ 38 vdc

100% Duty ......................................... 350 amps @ 34 vdc

Open Circuit Voltage ................................................. 72 vdc

Input Voltage ....................................... 575 vac, 3 ph, 60 Hz

Input Current @ Rated Load ................ 32 amps @ 575 vac

Dimensions:

15.25" (387 mm) W x 23.0" (584 mm) D x 15.5" (394 mm) H

Weight, Net .................................................. 161 lbs (73 kg)

C. Changes To Troubleshooting Section VI, as follows:

All resistance and low voltage check readings described in

15-014 are applicable to this unit, except those designated

with the symbol H.V. . This symbol indicates “high” voltage

checks which are not applicable, and cannot be safely made

in this unit because it does not contain an input terminal board

— reference the Capacitor Warning in the booklet (15-014).

D. Revised Wiring Diagram Contained Herein.

Be sure this information reaches the operator.
You can get extra copies through your supplier.

E. Revised Schematic Diagram Contained Herein.

Schematic Diagram - Digipulse 450/575 V.

D-31683

2

Wiring Diagram - Digipulse 450/575 V. (sh. 1 of 2)

D-31684

3

D-31684

F-15-015 6/95 Printed in U.S.A.

Wiring Diagram - Digipulse 450/575 V. (sh. 2 of 2)