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General| Brand | FEDERAL PIONEER |
|---|---|
| Model | USD |
| Category | Power Distribution Units |
| Current Rating | 30A |
| Standards | UL, CSA |
Details Long Time, Short Time, and Instantaneous elements.
Explains Zone Selective Interlocking Protection.
Describes pickup ranges, sensors, and time delay bands.
Procedures for testing using a portable test set.
Methods for testing via primary current injection.
Specifics on ZSIP checks, connections, and field testing considerations.
Guides for diagnosing and resolving common operational issues.
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