C & Tan Delta Measurement

Shanghai Jiuzhi Electric Co., Ltd. (Samgor)

Nearly every high voltage equipment prior to delivery to the customer will undergo a test related to capacitance and tan delta for a final quality control. Such tests are in general made at a frequency for which the equipment is designed. The reasons for the tests are firstly that too high losses ( means high tan delta) may cause a breakdown, secondly, the manufacturer of a specific equipment knows the typical magnitudes which can be tolerated and which provide information about the quality of newly manufactured equipment, and these measurements can also serve for a comparison with later preventive measurements.