High Voltage Test Techniques, 2nd Edition

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Fundamental Principles of High-Voltage Test Techniques

1.1 Generation and Measurement of High Alternating Voltages

High alternating voltages are required in laboratories for experiments and a.c. tests as well as for most of the circuits for the generation of high direct and impulse voltages. Test transformers generally used for this purpose have considerably lower power rating and frequently much larger transformation ratios than power transformers. The high voltage winding is so designed that it can withstand the routine breakdowns which generally occur on the specimen. The primary current is usually supplied by regulating transformers fed from the mains supply or, in special cases, by synchronous generators.

Most tests and experiments ...