Immersed transformer HZJ series

substationfor electrical networksfor industrial applications

The testing transformer, also known as the booster, is a fundamental test equipment used in power stations, power supply and distribution systems, and scientific research units. It is utilized for insulation strength testing on various electrical products, electrical equipment, and insulation materials, assessing the insulation level of products, identifying insulation defects, and determining the voltage withstand capacity. This state-of-the-art oil immersed high voltage testing transformer is engineered to deliver reliable and accurate performance, making it an essential tool for testing and measuring high voltage equipment and components. Structure The transformer is constructed from high-quality cold-rolled silicon steel sheets, available as HZJ alternating current test transformers and HZJZ alternating and direct current amphibious light high voltage test transformers. The winding adopts a concentric pagoda and multilayer cylindrical design, with the low-voltage winding inside and the high-voltage winding outside. The outer cover is portable, featuring compact size, lightweight, attractive appearance, and convenient mobility. Principle Of Work By connecting the control unit (supplementary equipment for the test transformer) to a 220V (or 380V for above 10KVA) power supply, and adjusting the input voltage via an autotransformer, the primary winding of the HZJ (or HZJZ) test transformer receives the input. According to electromagnetic induction, the secondary (high voltage) winding achieves a voltage proportional to the primary winding, resulting in a high-frequency voltage at the working frequency. After rectification by a silicon stack and filtering by a capacitor, a direct current high-frequency voltage is obtained, with an amplitude twice that of the working frequency. This product series includes three types: alternating current (YDJ), alternating and direct current (HZJZ), and the possibility to connect HZJ or HZJZ with a 200V switch for series excitation transformer operation. Technical Parameters 1. Technical parameters of HZJ series alternating current test transformers: Model: HZJ-1.5 to HZJ-50 Capacity: 1.5 KVA to 50 KVA High Frequency Voltage Output: 50 KV Output Current: 30 mA to 1000 mA Input Voltage: 200V/400V Temperature rise: 10℃ (30 minutes) Key Features: - Oil-immersed design for enhanced insulation and cooling - High voltage output for comprehensive testing applications - Robust construction with high-quality cold-rolled silicon steel - Portable and lightweight for easy transportation - Available in various models and capacities to suit different testing requirements Applications: - Insulation testing of electrical products and equipment - High voltage withstand testing - Research and development in electrical engineering - Routine and type testing in power stations and substations Technical Specifications (sample): - Model: HZJ-1.5 to HZJ-250 (various capacities and outputs) - Capacity: 1.5 KVA to 250 KVA - High Frequency Voltage Output: 50 KV to 250 KV (depending on model) - Output Current: 30 mA to 2500 mA (depending on model) - Input Voltage: 200V/400V/500V (depending on model) - Temperature rise: 10℃ (30 minutes)