JSZWK-10 anti-vibration three-phase voltage transformer is mainly insulated by epoxy resin and special insulating materials. It is equipped with a protective iron box and a porcelain sleeve, which improves the moisture-proof performance and electrical insulation performance. This product is not afraid of frequency division, high frequency, It will be burnt due to overvoltage, and it can run in the case of single-phase grounding of the line for a long time without over-temperature concerns. At the same time, the protection winding generates a voltage of 100V to drive the relay to work. This type of voltage transformer is a new type of voltage transformer developed and developed after the three-phase five-column voltage transformer to eliminate the public nuisance of ferromagnetic resonance and a large number of burnt out of the transformer due to the grounding of the power system to different degrees. The high voltage is converted into a standard secondary voltage of 100V or lower according to a proportional relationship, which is used for protection, metering and instrumentation devices. At the same time, the use of voltage transformers can isolate high voltages from electrical workers. Although the voltage transformer is also a device that works according to the principle of electromagnetic induction, its electromagnetic structure relationship is exactly opposite to that of the current transformer. The secondary circuit of the voltage transformer is a high-impedance circuit, and the magnitude of the secondary current is determined by the impedance of the circuit. When the secondary load impedance decreases, the secondary current increases, so that the primary current automatically increases a component to satisfy the electromagnetic balance relationship between the primary and secondary sides. It can be said that the voltage transformer is a special transformer with limited structure and use form. Simply put, it is the "detection element". Use environment： 1. Installation location: outdoor; 2. Ambient temperature: -25℃～+60℃; 3. Altitude: the altitude of the installation site should not exceed 2000 meters; 4. Relative humidity: the daily average is not more than 95%, the monthly average is not more than 90%; 5. The wind pressure does not exceed 700Pa (equivalent to a wind speed of 34m/s); 6. Pollution level: Ⅲ1. Provide wiring scheme diagram, application and system diagram, rated voltage, rated current, etc. 2. Requirements for control, measurement and protection functions and other locking and automatic devices. 3. When the transformer is used in special environmental conditions, it should be explained in detail when ordering. 4. When other or more accessories and spare parts are needed, the type and quantity should be proposed.