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THEORY OF OPERATION
FIGURE E.4 – WELDING OUTPUT SHADE
|
| REACTOR |
|
| OUTPUT |
|
| TERMINALS |
|
| STATOR |
ENGINE | MECHANICAL |
|
| ROTATION |
|
| ROTOR | ROTOR |
| SLIP |
|
| RINGS |
|
|
| STATOR |
| CAPACITOR |
|
|
| 115 AND 230VAC |
|
| RECEPTACLES |
| RHEOSTAT | BRIDGE |
|
|
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WELD WINDING AND REACTOR
The AC voltage developed in the stator weld winding is delivered, through the reactor, to the machine out- put terminals. The PowerArc 4000 provides the user with 125 amps of constant current AC welding for stick electrodes. The reactor stores energy, and this energy is released into the welding arc when the AC voltage passes through the zero point. In this manner the reactor enhances and stabilizes the AC welding arc. The reactor is designed to provide optimum welding characteristics when used with the recom- mended electrodes.
AUXILIARY POWER OVERCURRENT PROTECTION
The 4000 watt auxiliary power winding and circuitry is protected from an overload condition by two 20 amp circuit breakers. The circuit breakers are located below the output receptacles. They can be manually reset.
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NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion.
