Product introduction
The AC DC hipot test equipments are one of the most classic and widely used core equipment in the field of high voltage testing. They are mainly used to generate power frequency high voltage and conduct insulation strength tests (AC withstand voltage tests) and leakage current tests on various electrical equipment such as power cables, transformers, switches, insulators, etc
technical parameters
| specifications and models | capacity(kVA) | High Voltage(kV) | high-tension current(mA) | low 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 |
Main Characteristics and Advantages
1.High Capacity and Stable Output: Thanks to the excellent cooling effect of the insulating oil, oil-immersed testing transformers can be designed with a higher capacity (up to several hundred kVA) and can stably output the rated voltage continuously for long periods, making them suitable for withstand voltage tests on high-capacity equipment.
2.Excellent Insulation Performance: The dielectric strength of the insulating oil is very high, allowing the equipment to be more compact and smaller in size compared to dry-type transformers of the same voltage rating.
3.Good Heat Dissipation: The convective circulation of the oil effectively dissipates heat, preventing local hot spots and extending the equipment's service life.
4.High Cost-Effectiveness: For medium-high voltage and high-capacity ratings, the oil-immersed structure is generally more cost-effective to manufacture than dry-type transformers of equivalent specifications.
5.Strong Overload Capacity: It can withstand a certain level of overload for short periods.
Application field
1, Power system
1. Substation equipment testing: used for factory testing and preventive testing of newly installed or overhauled high-voltage electrical equipment such as transformers, circuit breakers, and isolating switches, to ensure that these devices can operate safely and stably at rated voltage.
2. Cable testing: Measure the insulation resistance and withstand voltage of high-voltage cables to verify their quality and safety.
2, Manufacturing industry
1. Product quality inspection: During the production process, oil immersed test transformers are used to conduct quality inspections on electrical products such as motors, generators, and transformers to ensure that the insulation performance of the products meets the standard requirements.
2. R&D and Certification: During the new product development phase, the device is used for prototype testing and certification to ensure that the design meets relevant technical specifications.
3, Research institutions
1. Basic research: Provide experimental platforms for universities and research institutions to support basic theoretical research on high-voltage technology, such as dielectric physics, discharge phenomena, etc.
2. Exploration of new technologies: Conduct research on new materials (such as superconducting materials), new insulation structures, and new energy technologies.
4, Railway transportation
1. Testing of rail transit equipment: The power supply equipment of the railway system needs to withstand high voltage, so it is necessary to regularly use oil immersed test transformers to test its insulation performance and ensure the safety of train operation.
5, Aerospace
1. Testing of aviation electronic equipment: For critical electronic equipment in the aerospace field, strict voltage resistance testing must be conducted to ensure reliability in extreme environments.
2. Satellite and other spacecraft component testing: Components such as satellite antennas and solar panels also need to undergo such testing to verify their ability to adapt to the space environment.
6, Industrial facilities
1. Industrial control system testing: The automation control system in large factories contains a large number of electrical components, and its insulation condition needs to be regularly checked to prevent faults caused by aging and other reasons.
2. Explosion proof equipment testing: For explosion-proof electrical equipment used in special environments, oil immersed test transformers can be used to verify whether they have sufficient insulation strength.
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