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HF-TC-619 AC Hipot Tester
AC Hipot Tester is an essential safety testing instrument. It applies high AC voltage to electrical products to detect insulation defects, measuring withstand voltage performance. Widely used for cables, motors, transformers and household appliances in quality inspection and factory certification.
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Intelligent Power Frequency Withstand Voltage Test Set is widely adopted by electrical manufacturers, power utilities, research institutions and universities. The set falls into integrated type (below 30kV) and split type.
The control box/console consists of contact voltage regulator (motor-driven column regulator for capacity above 50kVA) as well as control, protection, measurement and signal circuits. Connected to 220V or 380V power frequency supply, it adjusts the input voltage of the test transformer and feeds voltage into the primary winding. Based on electromagnetic induction principle, required high test voltage can be obtained.
In accordance with test codes, periodic AC withstand voltage tests are mandatory for large power transformers, power cables, turbo and hydro generators and other capacitive equipment.
Product Features
Monitoring Functions
High voltage monitoring, low current monitoring, zero-position indication, power supply indication, operation indication, timing indication
Protection Functions
Over-current protection, zero-position start protection, audio-visual voice alarm reminder
- New type time relay supports wider timing range: 1S～99H
- New current relay ensures higher precision and reliability to protect personnel and equipment
The high voltage test transformer adopts new dry-type transformer insulation, featuring good moisture resistance, shock resistance and superior insulation performance. Rational structure, compact size and light weight.
Technical Requirements
| Item | Specification |
|---|---|
| 1.1 Input Voltage | AC 220V, 50Hz |
| 1.2 Ambient Temperature | -40℃～40℃ |
| 1.3 Relative Humidity | ≤85% (at 25℃) |
| 1.4 Surroundings | Environment free of chemical gas and vapor |
| 1.5 Explosive Gas | No explosive gas present |
| 1.6 Waterproof Condition | Avoid direct rain immersion |
Technical Parameters
| Model Specification | Capacity (kVA) | Low Voltage Input | AC High Voltage Output | DC High Voltage Output (kV) | Measuring Ratio | ||
|---|---|---|---|---|---|---|---|
| Voltage (V) | Current (A) | Voltage (kV) | Current (mA) | ||||
| 1.5/50 | 1.5 | 200 | 7.5 | 50 | 30 | 70 | 500 |
| 3/50 | 3 | 200 | 15 | 50 | 60 | 70 | 500 |
| 5/50 | 5 | 200 | 25 | 50 | 100 | 70 | 500 |
| 5/10 | 5 | 200 | 25 | 10 | 500 | 14 | 100 |
| 6/50 | 6 | 200 | 30 | 50 | 120 | 70 | 500 |
| 10/50 | 10 | 200 | 50 | 50 | 200 | 70 | 500 |
| 20/50 | 20 | 400 | 50 | 50 | 400 | 70 | 500 |
| 30/50 | 30 | 400 | 75 | 50 | 600 | 70 | 500 |
| 50/50 | 50 | 400 | 125 | 50 | 1000 | 70 | 500 |
| 5/100 | 5 | 200 | 25 | 100 | 50 | 140 | 1000 |
| 10/100 | 10 | 200 | 50 | 100 | 100 | 140 | 1000 |
| 15/50 | 15 | 200 | 75 | 50 | 75 | 70 | 500 |
| 15/100 | 15 | 200 | 75 | 100 | 150 | 140 | 1000 |
| 20/100 | 20 | 400 | 50 | 100 | 200 | 140 | 1000 |
| 20/200 | 20 | 400 | 50 | 200 | 100 | 280 | 2000 |
| 25/100 | 25 | 400 | 62.5 | 100 | 250 | 140 | 1000 |
| 30/100 | 30 | 400 | 75 | 100 | 300 | 140 | 1000 |
| 30/120 | 30 | 400 | 75 | 120 | 250 | 168 | 1200 |
| 50/100 | 50 | 400 | 125 | 100 | 500 | 140 | 1000 |
| 50/250 | 50 | 400 | 125 | 250 | 200 | 350 | 1000 |
| 100/100 | 100 | 400 | 250 | 100 | 1000 | 140 | 1000 |
| 10/150 | 10 | 200 | 50 | 150 | 66 | 210 | 1500 |
| 20/150 | 20 | 400 | 50 | 150 | 133 | 210 | 1500 |
| 25/150 | 25 | 400 | 62 | 150 | 166 | 210 | 1500 |
| 30/150 | 30 | 400 | 75 | 150 | 200 | 210 | 1500 |
| 50/150 | 50 | 400 | 125 | 150 | 333 | 210 | 1500 |
| 150/150 | 150 | 400 | 375 | 150 | 1000 | 210 | 1500 |
Notes
- Single test transformer manufactured by our factory can reach AC 300kV, capacity up to 300kVA.
- If required, our test transformers are equipped with 200V cascade tap. Two or three units can be cascaded to achieve AC 100kV, 150kV, 200kV, 300kV high voltage. Medium voltage tap of 5～15kV can be drawn from high voltage winding upon request for AC withstand test of high voltage motors.
- DC high voltage output listed in the table refers to DC output value of AC/DC dual-purpose test transformer.
- Custom special-specification test transformers are available according to customer requirements.
Packing List – AC Hipot Tester
| No. | Item Name | Qty |
|---|---|---|
| 1 | Intelligent Control Box / Console | 1 set |
| 2 | High Voltage Test Transformer | 1 set |
| 3 | Power Input Cable | 1 pc |
| 4 | Low Voltage Connection Cable | 1 pc |
| 5 | High Voltage Lead Cable | 1 pc |
| 6 | Grounding Cable | 2 pcs |
| 7 | Operation Manual | 1 copy |
| 8 | Certificate of Quality & Warranty Card | 1 set |
| 9 | Factory Test Report | 1 copy |
AC Hipot Tester – Frequently Asked Questions
Q1: What is an AC Hipot Tester used for?
A: It is a power frequency withstand voltage test device designed to verify the dielectric strength of electrical equipment. It effectively detects hidden insulation defects, dampness, cracks and weak points in transformers, power cables, switchgears and generators for factory inspection and substation preventive tests.
Q2: What is the working principle of the AC Hipot Tester?
A: The device inputs 220V/380V industrial frequency power, adjusts the voltage via the regulator, and boosts high voltage through the test transformer based on electromagnetic induction. It applies standard AC high voltage to the DUT to check insulation withstand capacity.
Q3: What is the difference between AC Hipot and DC Hipot test?
A: AC Hipot test simulates actual grid operating conditions with alternating polarity, leaves no residual charge and fits most conventional power equipment. DC Hipot test is more sensitive for capacitive loads but requires mandatory discharge after testing.
Q4: What are the working environment requirements?
A: It operates at AC 220V 50Hz power supply, ambient temperature from -40℃ to 40℃, and relative humidity ≤85% (25℃). It must be used in non-explosive, non-corrosive and rain-free environments.
Q5: Is the AC Hipot test destructive?
A: No. It is a standard non-destructive overvoltage test. When operated per standard procedures and rated parameters, it only exposes insulation flaws without damaging qualified equipment.
Q6: What protection functions does the tester have?
A: It is equipped with complete safety protections including over-current protection, zero-position start protection, and audio-visual voice alarm. It supports 1S~99H wide-range timing to ensure personnel and equipment safety.
Q7: What types can the AC Hipot Tester be divided into?
A: It includes two types: integrated type (for voltage below 30kV) and split type. The dry-type transformer structure features small size, light weight, moisture resistance and strong impact resistance.
Q8: Can this machine do DC withstand voltage tests?
A: Yes. Our dual-purpose model supports both AC and DC high voltage output, meeting diverse testing demands for different power equipment.
Q9: How to choose the right model?
A: Select the capacity and voltage level according to the DUT’s rated voltage and test standard requirements. We provide 1.5kVA~150kVA, 10kV~300kV customizable models for various scenarios.
Q10: What if over-current or flashover occurs during the test?
A: The device will trigger automatic over-current protection, cut off high voltage output immediately and activate sound-light alarm to avoid equipment damage and safety accidents.
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