Product introduction
The AC hipot tester is a high-voltage test device used to test the withstand voltage performance of electrical equipment, insulation materials, cables, motors, transformers, etc. It converts the input low-voltage AC power into high voltage through an internal high-voltage transformer and applies it to the object under test. During the test, the system monitors the current leakage and determines whether electrical breakdown or insulation damage occurs.
Product features
High-precision Measurement
Most AC hipot testers on the market only use 12-bit or 14-bit analog-to-digital converters (ADCs), which can easily cause subtle voltage or current changes to not be accurately identified during high-voltage testing. Our equipment uses a 16-bit analog-to-digital converter (ADC) with higher resolution. Therefore, our equipment has a measurement accuracy of ±0.5%, far exceeding the industry standard of ±1%. This means that our equipment can detect more subtle insulation leakage problems and improve the reliability of detection.
Strong Testing Capabilities
The high-voltage transformer of traditional hipot tester is limited by the core material and coil winding method, making it difficult for the output voltage to exceed 200kV. We use special silicon steel sheets and optimize the winding structure of the transformer to reduce eddy current loss and insulation breakdown risk, so that the equipment can stably output voltages up to 300kV. This allows our instruments to meet not only the testing requirements of conventional power equipment, but also the testing requirements of ultra-high voltage transmission equipment.
Safety Assurance
Traditional AC hipot testers usually use step-type voltage boosting, that is, instantly raising the voltage to the set value, which may cause shock to the device under test. Our instrument uses soft start technology, which can smoothly boost the voltage within 50ms to avoid sudden voltage shocks. At the same time, in the withstand voltage test, once the leakage current is too large or the equipment insulation is broken down, our instrument can quickly cut off the power supply within 1ms, far exceeding the average response speed of 5-10ms on the market.
Technical parameters
|
Model |
Capacity (kVA) |
High voltage (kV) |
High-voltage current(mA) |
Low voltage input |
Ratio |
Temperature ℃(30min) |
|
|
voltage(V) |
current(A) |
||||||
|
YDJ(Z)-1.5/50 |
1.5 |
50 |
30 |
200 |
7.5 |
500 |
10 |
|
YDJ(Z)-3/50 |
3 |
50 |
60 |
200 |
15 |
500 |
10 |
|
YDJ(Z)-5/50 |
5 |
50 |
100 |
200 |
25 |
500 |
10 |
|
YDJ(Z)-10/50 |
10 |
50 |
200 |
200 |
50 |
500 |
10 |
|
YDJ(Z)-20/50 |
20 |
50 |
400 |
380 |
52.6 |
500 |
10 |
|
YDJ(Z)-30/50 |
30 |
50 |
600 |
380 |
79 |
500 |
10 |
|
YDJ(Z)-50/50 |
50 |
50 |
1000 |
380 |
132 |
500 |
10 |
|
YDJ(Z)-5/100 |
5 |
100 |
50 |
200 |
25 |
1000 |
10 |
|
YDJ(Z)-10/100 |
10 |
100 |
100 |
200 |
50 |
1000 |
10 |
|
YDJ(Z)-20/100 |
20 |
100 |
200 |
380 |
52.6 |
1000 |
10 |
|
YDJ(Z)-30/100 |
30 |
100 |
300 |
380 |
79 |
1000 |
10 |
|
YDJ(Z)-50/100 |
50 |
100 |
500 |
380 |
132 |
1000 |
10 |
|
YDJ(Z)-15/150 |
15 |
150 |
100 |
380 |
39.5 |
1500 |
10 |
|
YDJ(Z)-20/150 |
20 |
150 |
133 |
380 |
52.6 |
1500 |
10 |
|
YDJ(Z)-25/150 |
25 |
150 |
167 |
380 |
65.7 |
1500 |
10 |
|
YDJ(Z)-30/150 |
30 |
150 |
200 |
380 |
79 |
1500 |
10 |
|
YDJ(Z)-50/150 |
50 |
150 |
333 |
380 |
132 |
1500 |
10 |
|
YDJ(Z)-100/150 |
100 |
150 |
667 |
380 |
263 |
1500 |
10 |
|
YDJ(Z)-50/200 |
50 |
200 |
250 |
380 |
132 |
2000 |
10 |
|
YDJ(Z)-100/200 |
100 |
200 |
500 |
380 |
263 |
2000 |
10 |
|
YDJ(Z)-150/200 |
150 |
200 |
750 |
380 |
395 |
2000 |
10 |
|
YDJ(Z)-200/200 |
200 |
200 |
1000 |
380 |
526 |
2000 |
10 |
|
YDJ(Z)-300/200 |
300 |
200 |
1500 |
380 |
790 |
2000 |
10 |
|
YDJ(Z)-50/300 |
50 |
300 |
167 |
380 |
132 |
3000 |
10 |
|
YDJ(Z)-100/300 |
100 |
300 |
333 |
380 |
263 |
3000 |
10 |
|
YDJ(Z)-150/300 |
150 |
300 |
500 |
380 |
395 |
3000 |
10 |
|
YDJ(Z)-200/300 |
200 |
300 |
667 |
380 |
526 |
3000 |
10 |
|
YDJ(Z)-300/300 |
300 |
300 |
1000 |
380 |
790 |
3000 |
10 |
Frequently Asked Questions
1. What are the main applications of AC hipot tester testing?
Mainly used in power systems, industrial and mining enterprises, research institutes, and high-voltage laboratories, for conducting power frequency withstand voltage tests and related high-voltage insulation tests on electrical equipment.
2. What equipment can be tested for oil immersed AC hipot testers?
Can be used for voltage withstand testing of power transformers, cables, switchgear, circuit breakers, transformers, insulators, bushings, and other high-voltage electrical equipment and insulation materials.
3. What are the main advantages of oil immersed AC hipot testers?
The main advantages are as follows:
Small size and light weight
compact structure
easy to operate
fully functional
Versatile
Large voltage margin
Low corona sound
Small partial discharge
Good insulation performance
Stable and reliable operation
4. How to choose a suitable capacity oil immersed test transformer?
When choosing, we cannot only consider the output voltage, but also need to consider comprehensively:
test voltage
Test current
Sample capacity
Sample capacitance
Test time
Test Type
On site power supply conditions
5. What is the insulation performance of oil immersed AC hipot testers?
This series of products adopts insulation structures and materials suitable for high-voltage testing, with a large voltage margin, and can meet the requirements of high-voltage withstand voltage testing by optimizing the structure to reduce corona and partial discharge.
6. What is the difference between oil immersed and dry-type test transformers?
The main difference lies in insulation and heat dissipation methods:
Oil immersed test transformer:
Use insulating oil for insulation and heat dissipation
Good insulation performance
Strong heat dissipation capability
Suitable for higher voltage and larger capacity tests
Dry type test transformer:
Do not use insulating oil
Maintenance is more convenient
No oil leakage issue
More suitable for occasions with requirements for oil-free environments
7. What equipment is required for oil immersed AC hipot testers?
According to specific testing requirements, a complete high-voltage withstand voltage testing system can be composed of equipment such as a transformer control box/console, digital high-voltage meter, protection device, high-voltage connection line, and equalizing ball.
8. Can oil immersed AC hipot test sets be customized?
Okay. According to the testing needs of different customers, selection or customization can be made based on rated voltage, capacity, current, input voltage, test object, and testing standards.
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