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What is Measuring Winding Resistance in Transformers about?
The document describes the challenges of measuring resistance in circuits with large inductance, as is the case with power transformer windings. It notes that 1) a transient current will occur when power is applied due to the L/R time constant, requiring 5-9 time constants to settle before accurate measurements; 2) larger equipment has higher L/R ratios, lengthening settling times which can take minutes or hours; and 3) delta connected transformer windings introduce an additional transient within the delta
- Author
- Meghavahina
- Language
- EN