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Transformer Test.pdf

Transformer-Test.pdf
Preview of Transformer Test
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⬇️ Downloads: 247

Summary

1. Turn off power and disconnect primary leads.
2. Test primary winding resistance with an ohmmeter, expecting 3 ohms +/- 10% (2.7-3.3 ohms).
3. Test secondary side resistance from each terminal to a mounting screw, expecting 12,000 ohms +/- 10% (10,800-13,200 ohms).
Replace the transformer if readings are significantly higher or lower.
Reference values for specific brands:
- France: 12,000 ohms (secondary), 3 ohms (primary)
- Webster: 10,800 ohms (secondary), 3.8 ohms (primary)
- Allanson: 9,200 ohms (secondary), 2.4 ohms (primary)
- Dongan: 12,000 ohms (secondary), 3 ohms (primary)

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Description

Turn off power, disconnect primary leads, and test resistance.
Primary: 3 ohms, Secondary: 12,000 ohms.

Technical Information

  • File Format: PDF
  • File Size: 233 KB
  • Pages: 1
  • Language: EN
  • Total Downloads: 247
  • Last Updated: 8 hours ago

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