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Insulating gas transformer maintenance leakage rate enervac

Transformer Testing & Maintenance Fundamentals· PDF fileTransformer Testing and Maintenance Standards . 7 ... n 9. (Optional) Measure the percentage of oxygen in the gas blanket. Transformers, Liquid-Filled . 37 n Electrical Tests n 10. Remove a sample of insulating liquid in accordance with ASTM D 923. The sample shall be tested for the following. n 1. Dielectric breakdown voltage: ASTM D 877 and ...

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