Role voltage transformer is: a high voltage proportional relationship is converted into a standard 100V or lower grade secondary voltage voltage transformer for protection, metering, instrumentation device. At the same time, using voltage transformers can be high voltage and electrical workers isolated. Equipment voltage transformer though work is in accordance with the principle of electromagnetic induction, but its relationship with the electromagnetic structure compared to the current transformer opposite. Voltage transformer secondary circuit is a high impedance circuit, the size of the secondary current is determined by the impedance of the circuit. When the secondary load impedance is reduced, high voltage transformer secondary current is increased, so that a component of the primary current is automatically increased to meet the electromagnetic balance between the primary and secondary side. It can be said, it is a voltage transformer is defined structure and use of the special transformer. Simply put, it is "test element." Transformers (instrument transformer), also known as instrument transformers transformer prices, current transformers and voltage transformers collectively. Capable of high voltage to a low voltage, high current into a small current for measurement or protection system. Its main function is the high voltage or high current in proportion converted into a standard low voltage (100V) or standard low current (5A or 1A, refer to the rating) in order to achieve measuring instruments, protection of standardized equipment and automatic control devices, small of. At the same transformer it can also be used to separate high-voltage system to ensure the safety of persons and equipment. Nanning transformer oil transformer _ _ Xi'an by the Xi'an high Huayi power plant. Xian Huayi Electric Power Equipment Factory (www.xahy.com) strong, credible, in the Xi'an high-voltage circuit breakers and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Huayi electricity into the brilliant and you work for a better future!