Customized XHDP Series 0.1Hz Vlf Hipot Tester for AC Testing Equipment 60/80/90kv

Product Description

 

The  VLF AC Cable hipot tester adopts digital frequency conversion technology, single-chip microcomputer control, voltage boost, buck, measurement, protection completely automatic. Due to the full electronic, so small size and light weight, the use of large screen color touch display, clear and intuitive, simple operation, display output waveform. The design index conforms to the national standard of "General Technical Conditions of Ultra-low frequency high voltage generator". 
 

Product Features

 

Product features for this type of VLF hipot tester:  

1.The ultra-low frequency with rated voltage less than or equal to 60kV adopts a single link structure (a booster); The ultra-low frequency of more than 60kV adopts a series structure (two booster in series), which greatly reduces the overall weight and enhances the load capacity, and the two booster can be used separately to achieve a multi-purpose machine.
2.Current and voltage data are sampled directly from the high voltage side, so the data is accurate.
3. Intelligent comprehensive protection function: there is no need to set the current and voltage protection value, the instrument can calculate the overvoltage and overcurrent protection value according to the size of the test capacity and the test voltage value, and can also protect the voltage and current mutation, so it can capture the discharge situation. The protection operation time is less than 20ms.
4.150kV high voltage line output, safe and reliable.
5.Because of the closed-loop negative feedback control circuit, the output has no capacity rise effect.

 

Product Parameters

Rated voltage	Carring capacity	Application range
30kV(peak)	Automatic frequency change:0.1Hz-0.01Hz On-load capacity:<=10µF	Used for voltage test of cables and motors within 10KV
40kV(peak)	Automatic frequency change:0.1Hz-0.01Hz On-load capacity:<=10µF	Used for voltage test of cables and motors within 10KV
50kV(peak)	Automatic change frequency: 0.1Hz-0.01Hz Load capacity: <=6µF	Used for voltage test of cables and motors within 15KV
60kV(peak)	Automatic change frequency: 0.1Hz-0.01Hz Load capacity: <=5µF	Used for voltage test of cables and motors within 25KV
80kV(peak)	Automatic change frequency: 0.1Hz-0.01Hz Carrying capacity: <=6µF(within 50kV), <=4µF(above 50kV)	Used for voltage resistance test of cables and motors within 35KV

 

Output rated voltage	30kV-80kV The different specifications are shown in above Table
Output frequency	Automatic conversion range: 0.1Hz-0.01Hz
Carrying capacity	See above Table
AC voltage resolution	0.1kV
Voltage accuracy	3%
AC current resolution	0.1mA
AC current accuracy	3%
Voltage positive and negative peak error	≤ 3%
Voltage waveform distortion	≤ 3%
Conditions of use	indoor and outdoor; Temperature: -10ºC∽+40ºC; Humidity: ≤ 85%RH
Input power	Frequency 50Hz, voltage 220V±5%(or frequency 60Hz, voltage 110V±5%). If the micro generator is used for power supply, the frequency conversion generator should be used, and the ordinary generator can not be used, because the ordinary generator speed is unstable, which will make the boost voltage abnormal and damage the instrument.

 

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Main structure of ultra-low frequency high voltage power supply(VLF hipot tester)
For the VLF hipot tester with a rated voltage below 50kv, a booster is used, which is called the single-coupled ultra-low frequency, and its structure and components are described in the following figure:

 

For VLF hipot tester with rated voltage above 50kv, two boosters are used in series, which is called series ultra-low frequency, and its structure and components are described in the following figure:



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Connection method for ultra-low frequency withstand voltage test

(1) The connection method of ultra-low frequency voltage withstand test when the two-stage booster is connected in series is as follows





(2)Below 50kV single-link ultra-low frequency voltage test connection mode is as follows:




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Test interface reference (Test voltage and test time can be set manually. After setting, enter the test interface, the voltage will continue to rise, and when the voltage reaches the set value, the timing will start. The voltage can be adjusted up or down by Fine up/Fine down on the screen.)






VLF TAN DELTA TESTING 

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The following photos are the physical pictures of the 50kV VLF hipot tester







Onsite testing

 

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Welcome to contact us for more information and service!~

FAQ

1. Are you a trading company or a manufacturer?

We are a professional manufacturer with more than 10 years of experience. We can strictly control the quality of parts and finished products.

2. What is the delivery time and inventory?

If our best-selling products are in stock, it will be 5-8 working days for shipment. But for mass production and customized production, the time will take 2-4 weeks.

3. What are your payment terms?

Payment ≤ USD 2000, 100% T/T prepayment. Orders over USD 2000 can be negotiated.

4. How long is your product warranty?

We provide 1 year warranty for the equipment.

5. How do you ensure quality?

The product links include R&D, manufacturing, commissioning and technical support, following strict and scientific management principles. Therefore, we can support strong production and R&D capabilities, and can produce high-quality products at competitive prices to meet customers' high requirements.

6. What support can I get?

We will provide training support, marketing support, technical support and supply chain support. You can contact us for more information.

7. Where is your factory? Can I visit your factory?

We are located in Xi'an, Shaanxi, China. We are close to Xi'an Xianyang International Airport, which is about 2 and half hours by plane from Shanghai and Guangzhou. All customers from all over the world are welcome to visit us.

8. How to become your dealer?

Every company interested in power system instruments can contact us without hesitation, including website letters, emails, telephones, etc. We will contact you quickly according to your company information and cooperation intentions.