AC Hipot Test System

Generate High Voltage: Steps up a relatively low input voltage (typically hundreds or thousands of volts) to the required high test voltage (tens of thousands to millions of volts) through electromagnetic induction.

Insulation Strength Testing: Applies a specified high voltage to electrical equipment (such as power transformers, high-voltage switches, cables, insulators, surge arresters, etc.) for a defined duration to verify if their insulation materials can withstand overvoltages encountered during operation, thereby determining whether their insulation performance meets standards.

1.Reliable Grounding: Ensure the transformer tank and the high-voltage return (low-voltage terminal) are reliably grounded before use.

2.Oil Quality Monitoring: Regularly sample and test key oil parameters (breakdown voltage, moisture content, dielectric dissipation factor, acidity, gas content, etc.) to ensure insulation performance is qualified.

3.Oil Level Check: Observe that the oil level is within the normal range before and during operation.

4.Moisture Prevention: Keep the breather desiccant effective to prevent moisture ingress.

5.Contamination Prevention: Maintain cleanliness during oil filling and sampling to prevent contamination by impurities and moisture.

6.Fire Prevention: Equip storage and usage areas with fire-fighting equipment and keep away from ignition sources.

7.Ventilation: Ensure good ventilation in the operating area.

8.Handling: Avoid excessive tilting during handling (usually no more than 15 degrees) to prevent internal structural displacement or air ingress.

9.Operate According to Procedures: Strictly follow test procedures and safety regulations during operation, setting up safety barriers and warning signs.

Oil immersed AC hipot test systems are mainly used in power systems, substations, industrial and mining enterprises, research institutes, and high-voltage laboratories to provide stable high-voltage test power for electrical equipment, and to conduct power frequency withstand voltage, insulation strength, and high-voltage insulation performance tests.
Mainly used for:
Substation and power engineering: Voltage withstand test for equipment such as transformers, switchgear, and transformers.
Cable testing: Voltage and insulation tests for power cables and accessories.
Electrical equipment manufacturer: Conduct factory and type tests on high-voltage electrical products.
Industrial and mining enterprises: used for insulation performance testing after electrical equipment installation and maintenance.
Research and laboratory: Conduct research and experiments on high-voltage insulation materials and electrical equipment.

1. How long can an oil immersed AC hipot test system work continuously?
The actual continuous working time is related to the test voltage, load size, capacity, ambient temperature, and test time. Suitable capacity should be selected based on actual experimental conditions to avoid long-term overload operation.

2. Is oil immersed AC hipot test system safe?
The equipment can be equipped with corresponding control, protection, and measurement devices to provide necessary safety protection for the equipment and operators during the testing process. In actual use, it is still necessary to follow the safety regulations for high-voltage testing and set reliable grounding and safety isolation measures.

3. What parameters are required when purchasing an oil immersed AC hipot tester?
Suggest the customer to provide the following information:
Required test voltage
Required test current
Test transformer capacity
input voltage
AC or DC test requirements
Tested equipment
Test duration
Usage environment
Execution Standard
Purchase Quantity

4. What is the price of oil immersed AC hipot test systems?
The price mainly depends on the output voltage, capacity, current, AC/DC function, control system, and supporting accessories. The prices of different specifications vary greatly, so it is necessary to quote based on specific technical parameters.

5. How to obtain an accurate quotation for oil immersed test transformers?
Customers can provide information such as test voltage, capacity, input voltage, test objects, and usage scenarios. We can recommend suitable models based on actual needs and provide technical solutions and quotations.

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