AC DC Hipot Testing Set

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AC DC Hipot Testing Set

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Description

Technical Parameters

Product Video

HMGTB 5KVA 50KV Dry type transformer Parameter Setting Video

Products Description

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The HMGTB 5kVA/50kV AC/DC Withstand Voltage Tester is specifically designed to assess the withstand voltage performance of electrical equipment. It comprises two core components: a control unit and a high-voltage transformer. The control unit features a fully digital design, incorporating a large true-colour touchscreen LCD as the human-machine interface (HMI). It offers significant advantages including advanced performance, high precision, user-friendly operation, and an aesthetically pleasing appearance.

Features & Advantages

Fully digital measurement and control ensure high performance, precision and reliability.

Large true-colour touchscreen human-machine interface offers advanced, convenient operation with an elegant aesthetic.

Automatic/manual test modes.

Target voltage, threshold current, and duration freely configurable.

Automatic stepwise adjustment of high voltage as target values are approached.

Automatic timing at target high voltage, with automatic return to zero position upon time elapse.

Automatic high voltage shutdown and alarm activation upon exceeding protection thresholds, followed by automatic reset to zero position.

Automatic capture of peak voltage during breakdown events.

Automatic saving of test results, with viewing and printing capabilities supported.

Technical Specifications

Rated capacity: 5kVA
Rated input voltage: 0~200V
Rated input current: 25A
Testing voltage:AC 50kV
Rated output current: 100mA
Output DC High Voltage:70kV Hipot time: 1min
Output voltage waveform: sine wave
Output waveform distortion rate: ≤ 1%.
No-load loss: 0.2%~0.35%
Induced voltage level: 1.1U_O/1min.
Surface temperature rise: <55°C
Permissible continuous operating time at rated capacity: 0.5 hours (long-running transformers can be ordered)
Consecutive running times: Below 10kVA, each interval of 2 hours, allows continuous operation of 0.5 hours
Above 15kVA, every 4 hours, allowing continuous operation for 0.5 hours
Allows continuous operation for 4 hours at half rated voltage and half rated current.

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FAQs

Q: What is the primary function of this 5kVA 50kV AC/DC Hipot Tester?

A: This tester is designed to verify the dielectric strength and insulation integrity of electrical equipment. It can perform both AC (Alternating Current) and DC (Direct Current) high potential (Hipot) tests up to a maximum of 50,000 Volts.

Q: When testing a 10kV cable, the current quickly reaches the maximum value before the voltage rises, and the test cannot be completed. What's the problem?

A: This is due to insufficient power of the 5kVA 50kV device for the tested cable. For example, a 100-meter, 35-square-millimeter 10kV cable has a large capacitance load. The 5kVA capacity is not enough to drive it during AC voltage withstand testing. You can switch to DC voltage mode for the test (the device can output up to 70kV DC) or replace a hipot testing set with larger capacity to meet the load requirements.

Q: After troubleshooting the tested product, the fault indicator on the instrument is still on and cannot boost voltage. What should I do?

A: The instrument may have a temporary system fault after detecting an abnormality of the tested product. Simply turn off the power switch of the hipot testing set, wait for 1 - 2 minutes, then restart the instrument. This can reset the protection system, and normal voltage boosting can usually be carried out afterward.

Q: The instrument can work normally in AC mode, but the DC output voltage is much lower than the set value. What's the reason?

A: It may be a fault in the device's internal DC rectifier module or the high-voltage rectifier components. First, check whether the high-voltage cable between the control box and the test transformer is connected correctly. If the wiring is normal but the problem persists, it indicates an internal component failure. Do not disassemble it by yourself; contact professional maintenance personnel to inspect and replace the rectifier parts.

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