Your Professional VLF AC Hipot Test Set Supplier
Founded in 1992 and formally incorporated as Wuhan Moen Intelligent Electrical Co., Ltd. on November 12, 2012, with a registered capital of RMB 36 million, we are a professional technology company specializing in the research, development, and production of high-voltage test equipment. Our 8,000 m² facility in Wuhan East Lake High-Tech Development Zone houses dedicated production lines, R&D centers, and administrative facilities. With an experienced technical and production team, Moen focuses on core products including test transformers, series resonance systems, and other high-voltage testing equipment. Backed by years of industry experience, the company is committed to reliable manufacturing, continuous technical improvement, and providing practical solutions for global power utility and industrial customers.
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45kV VLF Hipot Tester with Tan DeltaThe MOEORW-WHVA45 is an VLF Hipot Tester with Tan Delta specifically designed for medium and high voltage power testing. It integrates multiple testing functions, accurately detects insulation
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Integrated VLF‑Tan Delta Diagnostic TesterThe MOEORW-WHVA30 is a compact 19.5 kg VLF hipot tester that combines AC withstand voltage with precise Tan Delta diagnostics for cables, generators, and motors. It reduces power demand to 1/500 of
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VLF Hipot Tester With Tan Delta & Partial Discharge Measu...The MOEORW-WHVA81 is a VLF hipot tester that integrates AC/DC withstand voltage, tan delta (dielectric loss) , capacitance, insulation resistance, and partial discharge (PD) measurement in a single
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30kV VLF HV GeneratorIdeal for on-site cable maintenance and small motor testing. Its lightweight integrated design lets you finish safe, fast 0.1Hz withstand tests outdoors without heavy equipment — protecting
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80kV VLF Tester With Tan DeltaThe MOEORW-WHVA80 VLF Tester With Tan Delta is suitable for insulation withstand voltage and dielectric loss testing of large capacitor electrical equipment. It is a dedicated device for preventive
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80kV Very Low Frequency High Voltage GeneratorDesigned for high‑voltage long‑distance cables and heavy industrial equipment. High power and low distortion ensure stable testing for large loads, helping you pass acceptance tests smoothly and
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60kV Ultra-low Frequency High Voltage GeneratorProfessional solution for 35kV cable and large motor withstand tests. Fully automatic operation and complete safety system make long-hour tests easier, improving test accuracy while protecting
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50kV Ultra-low Frequency High Voltage GeneratorMEVLF-W50kV Ultra-Low Frequency High-Voltage Generator utilizes an ARM7 microcontroller with a 7-inch touchscreen, supporting multi-frequency operation from 0.01 to 0.1Hz with 3% measurement
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40kV Ultra-low Frequency High Voltage Generator±3% high precision, accurate traceable dataWaveform distortion ≤5%, compliant testingLightweight split structure, easy single operation5.5μF large load for 8km long cable testAutomatic test with full
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30kV Ultra-low Frequency High Voltage GeneratorIt is integrated and lightweight, allowing you to swiftly and safely execute on-site 10kV cable and small motor withstand testing outside without the need for heavy equipment, protecting insulation
Why choose us
Our Certificate
We are certified in ISO 9001 (Quality), ISO 45001 (Health & Safety), and ISO 14001 (Environment), ensuring high standards in all aspects of our operations.
Strong R&D Capability
Committed to technological breakthroughs, including investments to develop 750kV reactor solutions.
Experienced Technical Team
A growing team of 61 employees supporting product development, production, and customer service.
Complete Pre & After-Sales Service
From solution design and technical support to installation, maintenance, and fast response service.
80kV VLF Tester With Tan Delta
80kV VLF tan delta partial discharge tester utilizes digital frequency conversion technology and is controlled by a microcontroller, fully automating voltage boost, buck, measurement, and protection. Due to its fully electronic design, it is compact and lightweight. It features a large, color touchscreen display that is clear, intuitive, and easy to operate, and it displays the output waveform.
Product Parameter
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Model |
MOEORW- WHVA80 |
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Power supply voltage |
100-240V; 50/60Hz; ±10% |
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Input power |
400VA |
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Output voltage [Max.] |
VLF Sinewave: 46 kVrms (RMS), 65 kVPeak (Peak) VLF Squarewave: 65 kV DC [+/-]: +65 kV / -65 kV |
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Output voltage [Max.] |
Sinewave: 10mArms Squarewave/DC[+/-]: 14.5mA |
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Output frequency |
0.01Hz-0.1Hz in 0.01Hz increments |
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Frequency optimization |
Have |
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Output load capacity |
At rated voltage of 0.1Hz: 0.5µF; at low frequency or low voltage: 12µF |
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Measurement |
Current resolution: 1µA±1% Voltage resolution: 0.1kV±1% Capacitor resolution: 0.1nF-20µF Resistance: 0.1MΩ-20GΩ |
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Output task |
Continuous |
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Test mode |
Manual or Automatic |
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Output mode (Unrelated to load, symmetrical) |
VLFACSinewave VLFACSquarewaveDC[+or–polarity] VacuumBottleTesting |
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Arc Management Mode |
Troubleshooting method: Arc combustion Fault tripping method: Arc extinguishing tripping |
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PC Interface |
RS232 (standard) USB flash drive module (optional) |
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Record storage |
Built-in memory: Up to 50 reports, 40 test sequences USB Flash Drive: Unlimited Memory |
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Computer software (including) |
HVRControlCenterforWindowsXP/Vista |
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Weight |
19.5kg |
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Size (Controller not included) |
430mmx360mmx250mm(17"x14"x10") |
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Environment |
Storage temperature: -25°C to 70°C (-13°F to 158°F) Operating temperature: -5°C to 45°C (23°F to 113°F) Humidity: 5-85% (non-condensing) |
Advantages of 80kV VLF Tester With Tan Delta
When using a VLF hipot tester, the amount of current flowing through the test object is significantly reduced. This reduction in current minimizes the risk of damage to the insulation and the potential for electrical shock to the operators.
One of the most significant long - term benefits of using a VLF hipot tester is its ability to detect insulation defects at an early stage. This not only prevents costly downtime but also extends the lifespan of the electrical equipment.
VLF hipot testers are more energy - efficient compared to traditional high - frequency testers. Since they operate at a very low frequency, they consume less power during the testing process. Over time, this can lead to significant savings on electricity bills
The portability of VLF hipot testers allows for on - site testing, eliminating the need to transport heavy and bulky equipment to a testing facility.
Regular testing with a VLF hipot tester can improve the overall performance of electrical equipment. By detecting and rectifying insulation defects early, the electrical equipment can operate more efficiently.
Type of 80kV VLF Tester With Tan Delta
VLF Cable Tester
This smooth and portable equipment can check long electric cables at a particular low frequency and voltage. It can help find places where the cable might have weak spots or breaks. It's good for checking cables in tough power and industrial settings. Plus, it's lightweight, so it can move around easily during the tests.
Partial Discharge Detector
This detector checks cables for partial discharge activity, which can cause problems over time. It monitors cable sections for weak spots and identifies potential insulation breakdowns. By catching issues early, it helps prevent big repairs and keeps cables running safely longer.
Insulation Resistance Tester
This tool measures a cable's insulation resistance, helping to find moisture or wear that may lead to power leaks. It applies a direct current to see how well the cable insulation resists electricity. Lower resistance than normal can mean insulation failure. Regular use helps keep cables in good condition and reduces downtime.
Surge Comparison Equipment
This device uses surge signals to analyze and verify the insulation health of distinct power cables. By sending these signals through cables, it can identify differences in insulation conditions between a reference cable and a test cable. This enables accurate insulation defect detection. It is mainly used in substations and power plants where many high-voltage cables are located.
Applications of 80kV VLF Tester With Tan Delta
Utility and Power Generation
Power plants and utility companies use cables to transmit electricity at massive voltages. VLF hipot testers assist in confirming that these long cables safely handle the load. Performing regular tests before problems develop helps avoid huge power outages.
Manufacturing Facilities
Assembly plants and other big factories make cables for internal electrical systems. VLF hipot testers check these long cables to ensure production machines have the power they need. Catching any problems with the wiring means machines stay up and running, resulting in higher output levels.
Transportation Systems
Subways, trains, and some buses rely on electric cables to power the entire system. VLF hipot testers examine these cables to ensure trains can run safely and on time. This helps avoid delays for passengers and stops shutdowns.
Ship and Aerospace
Advanced electronics are found inside large ships, boats, and planes. VLF hipot testers confirm the long cables can withstand extreme conditions like storms or high altitudes. Testing cables before flights or journeys keeps all the internal systems working.
Data Centres
Big data centres have thousands of cables powering computers and servers. VLF hipot testers check that these cables can handle the electricity needed to keep everything online. Catching issues with the wiring early prevents downtime, which can cost a lot.
Usage Requirements of 80kV VLF Tester With Tan Delta
Clean and Dry the Test Area
Make sure the area where the test will be conducted is clean and dry. Remove any standing water or wet materials.
Inspect the Tester
Thoroughly inspect the VLF hipot tester for any signs of damage or moisture ingress. Check the cables, connectors, and electrodes for corrosion or other issues.
Select the Right Test Parameters
In high - humidity conditions, you may need to adjust the test parameters. However, be careful not to exceed the rated voltage of the test object.
Proper Grounding
Ensure that the VLF hipot tester are properly grounded. A good ground connection helps to dissipate any stray currents and reduces the risk of electrical shock.
Check for Leakage Currents
Keep an eye on the leakage current readings. If you notice a significant increase in the leakage current, it could be a sign of surface leakage due to high humidity.
Clean and Store the Tester Properly
Clean the VLF hipot tester to remove any moisture or contaminants. Dry it thoroughly before storing it in a dry place. You can use a soft, dry cloth to wipe the tester's surface.

Packing detail
Packing with wooden cases, provide different solutions of shipping way.
Payment
We accept many payment term, such as T/T, Western Union, L/C.
Warranty period
One-year warranty, Installation, and commissioning of specific products.
Delivery time
Most of our products are in stock and can be delivered upon payment. The delivery time usually does not exceed 15 days.
Certificates




FAQ
As one of the most professional vlf ac hipot test set manufacturers in China, we're featured by quality products and good price. Please rest assured to buy high quality vlf ac hipot test set in stock here and get quotation from our factory. Customized orders are welcome.
No Partial Discharge Power Frequency Test Device, 60kV Ultra low Frequency High Voltage Generator, 80kV Ultra low Frequency High Voltage Generator