Voltage transformer is a voltage conversion device. It is converted to low-voltage high-voltage, high pressure in order to reflect changes in the value of the low-pressure value. Thus, by measuring the voltage transformer voltage can be directly used ordinary electric meter. As a result of voltage transformer, a variety of measuring instruments and protective devices are not directly connected to the high voltage in order to ensure the safety and protection work of measuring instruments, but also solve the high-voltage insulation measurement difficulties, and other manufacturing processes. Besides cable, due to the secondary side voltage transformers are 10 Volt makes measuring instruments and relay coil voltage to standardize manufacturing. Structure and working principle of the common transformer voltage transformer same, which is also the core, a primary winding and secondary winding, terminals and insulation supports other components. Voltage transformer primary winding is connected to the system line voltage or phase voltage insulation should vary with the actual system voltage level may be. The primary winding has more turns, the secondary winding turns rarely supply voltage meter or relay coil. Voltage transformer secondary winding short circuit is not allowed. Secondary winding 10 volts lamp cable, should be connected to be able to withstand 10 volt circuit, the current through it, and by the size of the secondary circuit impedance to decide. The secondary is shorted, the impedance is small, the current flowing through the secondary circuit is increased, resulting in secondary fuse blown affect meter indication and protection malfunction caused damage to voltage transformers. Voltage transformer secondary circuit must be grounded to prevent a secondary high breakdown voltage insulation damage to the secondary side of the string to cause danger to persons and equipment. Overview of wiring systems terminals task is to carry out mechanical and electrical wires reliable connection. Terminals using the press frame can effectively implement this feature. Wiring System terminals system task is to carry out mechanical and electrical wires reliable connection. Terminals using the press frame can effectively implement this feature. The press frame is hardened and galvanized steel passivation can withstand tremendous torque of the screws can be firmly pressed steel wire. Copper plated conductive flexible sheet of tin - lead alloy, to ensure air-tight, low resistance, permanent connection with the wires. The following advantages of the wiring system by the user favorite terminal lines 4p, and are widely used: a large contact surface, and the contact pressure, and can be contacted at any transverse. With self-locking, seismic, locking function test jacks can be installed without the need to maintain the contact point is absolutely airtight, corrosion-resistant strands allow not crimp ends, easy to use and can be directly connected to the contact pressure is widely used in the world's big vh3.96 terminal lines | Yangjiang terminal lines | Song Chong Xu electronic products factory by Dongguan Shijie Xu Song Chong electronic products factory provided. Dongguan Shijie Xu Song Chong Electronic Products Factory (chuangxs.1688.com) strong, credible, connectors, and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and continuous improvement to create innovative ideas will lead Xu Song electronic products factory and you hand in hand into the brilliant, for a better future!