Tap changer

The function of the tap changer is to adjust the number of turns of the high-voltage winding of the transformer to change within the range of+5% to -15% of the rated value in the event of a power outage, thereby changing the voltage on the low-voltage side and fully adapting to the voltage needs of users. The non excitation tap changer is suitable for three-phase oil immersed transformers. Under non excitation conditions, the secondary voltage can be adjusted by changing the number of turns in the transformer's primary coil. The temperature of the tap changer in the oil medium is minimum -25 ℃ and maximum 100 ℃. The non excitation tap changer produced by our company is suitable for three-phase oil-immersed power transformers with a frequency of 50-60Hz, rated voltage of 10Kv to 35Kv, rated current of 63A or 125A or 25oA, and below 400A. There are two types of voltage regulating parts: the middle and neutral points. Connected to the neutral point of the coil for non excitation voltage regulation. It can be directly fixed at the cover of the transformer box and exchanged in an excitation free state. This switch adopts a new structure, new materials, and new technology, which has the advantages of reasonable structure, strong hand feel, flexible rotation, accurate positioning, good sealing performance, and low contact resistance. All conductive parts have smooth and rounded surfaces, improving the distribution of electric fields. They are currently the latest generation of non excitation tap changer products in China