Product Introduction
Wuhan UHV Power Technology Co.,Ltd., is a professional manufacturer and supplier of high-voltage power testing equipment in China.The YDJ Digital Display 5kVA AC/DC Hipot Test Set is a versatile testing system that combines a moderate 5kVA capacity with digital precision for reliable dielectric withstand testing on medium-sized electrical equipment. Its dual AC/DC capability, programmable controls, and comprehensive safety features make it an ideal choice for both quality control and maintenance applications in industrial and utility settings.
Product functions
1. AC/DC withstand voltage testing
Supports both AC and DC withstand voltage testing, with test modes selectable according to different equipment under test and test requirements.
By applying the specified high voltage to the equipment under test, the withstand capability of its insulation system is tested, effectively identifying insulation defects and potential safety hazards.
2. High-voltage stable output
Uses an oil-immersed high-voltage test transformer to step up the low-voltage input to the high voltage required for testing, providing stable and reliable high-voltage output for electrical equipment withstand voltage testing.
Taking the YDJ-5/50 as an example: rated capacity 5kVA, rated high voltage 50kV, high voltage current 100mA, suitable for withstand voltage testing of various medium-voltage electrical equipment and insulation components.
3. Digital measurement and display
Adopts digital measurement and display methods, allowing intuitive viewing of key parameters during the testing process.
Real-time monitoring of test status facilitates parameter reading, test monitoring, and result judgment by operators, improving testing efficiency.
4. High-voltage insulation and low partial discharge design
Features optimized high-voltage insulation structure and high-quality insulating materials, equipped with voltage grading structures, effectively reducing partial discharge levels during high-voltage operation.
Good insulation performance and electric field control capability help improve equipment stability and reliability during high-voltage testing.
Product Characteristics
1. Premium Materials & Reliable Quality – The high-voltage test transformer is built with carefully selected materials, ensuring reliable performance and excellent operational stability.
2. High Voltage Margin & Low Partial Discharge – Designed with a generous voltage margin, a compact corona ring, and minimal partial discharge levels for superior electrical performance.
3. Compact & Lightweight Design – Utilizes advanced new insulation materials, resulting in reduced size and lighter weight for enhanced portability and ease of installation.
Technical Parameters
| specifications and models | capacity(kVA) | High Voltage(kV) | high-tension current(mA) | ow input voltage | ratio of transformation(high /rites) | temperature rise℃(30 minutes) | |
| tension(V) | electricity(A) | ||||||
| YDJ-3/50 | 3 | 50 | 60 | 200 | 15 | 500 | 10 |
| YDJ-5/50 | 5 | 50 | 100 | 200 | 25 | 500 | 10 |
| YDJ-10/50 | 10 | 50 | 200 | 200 | 50 | 500 | 10 |
| YDJ-20/50 | 20 | 50 | 400 | 400 | 50 | 500 | 10 |
| YDJ-30/50 | 30 | 50 | 600 | 400 | 50 | 500 | 10 |
| YDJ-50/50 | 50 | 50 | 1000 | 400 | 125 | 500 | 10 |
| YDJ-5/100 | 5 | 100 | 50 | 200 | 25 | 1000 | 10 |
| YDJ-10/100 | 10 | 100 | 100 | 400 | 25 | 1000 | 10 |
| YDJ-10/25 | 10 | 25 | 400 | 400 | 25 | 1000 | 10 |
| YDJ-20/100 | 20 | 100 | 200 | 400 | 50 | 1000 | 10 |
| YDJ-30/100 | 30 | 100 | 300 | 400 | 75 | 1000 | 10 |
| YDJ-50/100 | 50 | 100 | 500 | 400 | 125 | 1000 | 10 |
| YDJ-15/150 | 15 | 150 | 100 | 400 | 37.5 | 1000 | 10 |
| YDJ-20/150 | 20 | 150 | 133 | 400 | 50 | 1000 | 10 |
| YDJ-30/150 | 30 | 150 | 200 | 400 | 75 | 1000 | 10 |
| YDJ-50/150 | 50 | 150 | 333 | 400 | 125 | 1000 | 10 |
| YDJ-100/150 | 100 | 150 | 667 | 400 | 250 | 1000 | 10 |
| YDJ-50/200 | 50 | 200 | 250 | 400 | 125 | 1000 | 10 |
| YDJ-100/200 | 100 | 200 | 500 | 400 | 250 | 1000 | 10 |
| YDJ-150/200 | 150 | 200 | 750 | 400 | 375 | 1000 | 10 |
| YDJ-200/200 | 200 | 200 | 1000 | 400 | 500 | 1000 | 10 |
| YDJ-300/200 | 300 | 200 | 1500 | 400 | 750 | 1000 | 10 |
| YDJ-50/300 | 50 | 300 | 170 | 400 | 125 | 1000 | 10 |
| YDJ-100/300 | 100 | 300 | 333 | 400 | 250 | 1000 | 10 |
| YDJ-150/300 | 150 | 300 | 500 | 400 | 375 | 1000 | 10 |
| YDJ-200/300 | 200 | 300 | 667 | 400 | 500 | 1000 | 10 |
| YDJ-300/300 | 300 | 300 | 3000 | 400 | 750 | 1000 | 10 |
Compare the advantages and disadvantages of oil immersed test transformers and dry-type test transformers
1. The cost is different
For transformers of the same capacity, the purchase price of dry-type transformers is much higher than that of oil type transformers.
2. Different lead forms
Dry type transformers mostly use silicone rubber bushings, while oil type transformers mostly use porcelain bushings
3. Different capacities and voltages
Dry type transformers are generally suitable for power distribution, with capacities mostly below 1600KVA and voltages below 10KV, with a few reaching a voltage level of 35KV; However, oil transformer supplier can achieve full capacity from small to large, and voltage levels can also achieve all voltages.
4. Insulation and heat dissipation are different
Dry type transformers are generally insulated with resin and cooled by natural air cooling. Large capacity transformers are cooled by fans, while oil type transformer manufactures are insulated by insulating oil. The circulation of insulating oil inside the transformer transfers the heat generated by the coil to the radiator (plate) of the transformer for heat dissipation.
5. Applicable places
Dry type transformers are mostly used in places that require "fire and explosion prevention", and are generally easy to use in large and high-rise buildings. Oil type transformer manufactures, on the other hand, are mostly used outdoors and in places where "accident oil pools" are excavated due to the possibility of oil spraying or leaking after "accidents", causing fires.
6. Different ability to withstand loads
Generally, dry-type transformers should operate at their rated capacity, while oil type transformers have better overload capacity.
Application Fields
Power companies (power plants, substations, transmission and distribution systems)
Electrical equipment manufacturing enterprises
Electric Installation and Engineering Company
Electric power maintenance and repair unit
Third party testing agency
Research institutes and university laboratories
New energy industries such as wind power, photovoltaics, and energy storage
Railway and urban rail transit
Large industrial enterprises such as petroleum, chemical, metallurgical, mining, etc
Power Equipment Maintenance and Testing Service Company
Frequently Asked Questions
1. What is an oil-immersed test transformer used for?
Oil immersed test transformers are mainly used to provide AC high voltage for power equipment such as transformers, cables, switchgear, insulators, circuit breakers, and transformers, and to conduct power frequency withstand voltage tests.
2. Is operation complicated?
No. When used with a control console or automatic control system, the operation is simple. Even first-time users can quickly master the testing procedure after basic training.
