Mainly used to monitor AC circuit operation of electrical equipment and control system (usually referred to as its primary winding or primary winding of the transformer primary winding outlet, called the secondary winding secondary winding or secondary winding), respectively for the measure meter relay coil voltage and current coil power transformers, correctly reflect the normal operation and fault conditions of electrical equipment. Measurement accuracy and reliability of the instrument relay action opening transformer, in much the transformer performance related. It should therefore be familiar with some of the main characteristics of transformers for proper selection and use of transformers. In AC circuits, transformers commonly used in the high voltage into low voltage and zero-sequence current transformer, a large current into a small current, thereafter for measurement, control and protection. This will not only increase the measuring instrument from the process, to facilitate standardized instrument to reduce control, protection of voltage and current of the device, and the instrument and equipment or high-voltage circuits are separated to ensure the safety instruments, equipment and staff. Transformer factory direct, Nanchang transformers, electricity is supplied by Xian Huayi 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!