INSTALLATION | ||
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ELECTRICAL INPUT CONNECTIONS
Before installing the machine check that the input sup- ply voltage, phase, and frequency are the same as the voltage, phase, and frequency as specified on the welder Rating Plate located on the Case Back Assembly. Input power supply entry is through the hole in the Case Back Assembly. See Figure A.2 for the location of the machine’s input cable entry open- ing, Input Contactor (CR1), and reconnect panel assembly for dual voltage machines.
INPUT SUPPLY |
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CABLE ENTRY | INPUT | |
OPENING | ||
CONTACTOR (CR1) | ||
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| RECONNECT | |
| PANEL ASSEMBLY |
FIGURE A.2 - Rear Panel
FUSE AND WIRE SIzES
Protect the input circuit with the super lag fuses or delay type circuit breakers listed on the Technical Specifications page of this manual for the machine being used. They are also called inverse time or ther- mal/magnetic circuit breakers.
DO NOT use fuses or circuit breakers with a lower amp rating than recommended. This can result in “nui- sance” tripping caused by inrush current even when machine is not being used for welding at high output currents.
Use input and grounding wire sizes that meet local electrical codes or see the Technical Specifications page in this manual.
GROUND CONNECTION
Ground the frame of the machine. A ground terminal marked with the symbol (
) is located inside the Case Back of the machine near the input contac- tor. Access to the Input Box Assembly is at the upper rear of the machine. See your local and national elec- trical codes for proper grounding methods.
INPUT POWER SUPPLY CONNECTIONS
A qualified electrician should connect the input power supply leads.
1.Follow all national and local electrical codes.
2.Use a
3.Remove Input Access Door at upper rear of machine.
4.Follow Input Supply Connection Diagram located on the inside of the door.
5.Connect the
INPUT
CONTACTOR (CR1)
INPUT POWER SUPPLY
CABLE WITH BUSHING
OR BOX CONNECTOR RECONNECT PANEL ASSEMBLY
FIGURE A.3 - Input Power Supply
Connections
IDEALARC®