OPERATION | ||
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MULTIPLE ARC AC ADJUSTMENTS FOR
SYSTEMS EQUIPPED WITH
SYSTEM INTERFACE
Phase
The phase relationship between the arcs helps to minimize the magnetic interaction between adjacent arcs. It is essentially a time offset between the wave- forms of different arcs, and is set in terms of an angle from 0 to 360°, representing no offset to a full period offset. The offset of each arc is set independently with respect to the lead arc of the system (ARC 1).
Recommendations:
•For balanced waveforms a phase relationship of 90° should be maintained between adjacent arcs.
| ARC 1 | ARC2 | ARC3 | ARC 4 |
2 Arc System | 0° | 90° | X | X |
3 Arc System | 0° | 90° | 180° | X |
4 Arc System | 0° | 90° | 180° | 270° |
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•For unbalanced waveforms:
–Avoid switching at same time
–Break up long periods of unchanged polarity relative to adjacent arcs
Phase Relationship | ||
Use Phase Relation ship to minimize arc blow | ||
| in multip le arc systems. |
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| (Balanced two arc system shown) |
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0° | 90° | 180° |
(PULL) | (PUSH/PULL) | (PUSH) |
500 |
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ARC 1 |
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ARC 2 |
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0 |
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BAD | GOOD | BAD |
Best results obtained by alternating and equalizing the duration of
magnetic forces between adjacent arcs.
POWER WAVE® AC/DC 1000
