HVGTU Non Partial Discharge Test System for Cable, Transformer and GIS

Ⅰ Introduction

The system is especially designed for testing GIS in the factory and on-site test, and for testing all GIS switchgears and GIS components such as insulators, insulating tension pole, GIS PT etc. It also can test transformers, power cables.

As its good encapsulation, it can perform PD test in normal environment. When it tests partial discharge, the PD level is less than 3pc, and it can be added a HV bushing to perform the withstand voltage test at the same time.

Ⅱ Features

1.The equipment is small and available with minimal space
2.Components are light in weight
3. Rugged structure capable of handling long distance transportation
4. Direct connection with the subject
5. All high voltage parts are encapsulated in airtight space to ensure high safety of operators
6.Wide range applications, adding installation bushings can do normal withstand voltage testing.
7.Built in high voltage measurement and PD coupling capacitor
8.Built in high voltage isolating switch, which can separate interface of multiple test products, to ensure safety of high voltage test.

Ⅲ Basic configuration

1.HVGTU High Voltage test transformer

2.High voltage Coupling capacitor

3.High voltage measuring capacitor

4.Current limiting reactor

5.Voltage regulator

6. Isolated transformer

7. Compensation reactor

8. Console

IV Optional Configuration

1.Partial Discharge detector 

2.SF6 HV bushing and disconnecting switch

3.Annular tubes (included grading ring)

4. Various connection or adaptation flanges according to different test objects

V Function of the testing system

1.The encapsulated test transformer is a conventional transformer and step-up the voltage coming from the voltage regulator. The compensating reactor connect with the HV transformer primary winding to compensate the capacitive current. (The HV transformer LV side has an independent compensating winding.)

2.For the on-site testing system, the voltage regulator, compensating reactor, Isolating transformer and control system are integrated into a cabinet. It gives a most compact equipment with a minimum number of components to be transported and connected for testing.

3.Using HV disconnecting switch to disconnect all types of test object connector to achieve widely use.

4.Three-phase change-over switch to test three phase in box system.

5.Universal adjustable platform to make HV transformer flange test object more conventional.

VI Specifications

1. Voltage grade : 100kV, 200kV, 250kV, 300kV, 500kV, 750kV, 1000kV ;

2. Capacity : 50-2000kVA ;

3. High voltage generated mode: high voltage transformer voltage boost and series resonance(power frequency,frequency conversion);

4. All methods of boost voltage are one level voltage boost ,no need to cascade boost voltage;

5. Input voltage: 0.35-10kV;

6.Partial discharge capacity: Rated voltage 3pc (normal environment) ;

7.Impedance voltage: 5%;

8.Temperature rise: no more than 65k (50Hz) when rated current operates 60mins.

9.Altitude: Not limited for the HV parts

10.Relative humidity: Not limited for the HV parts 

11.Ambient temperature: -10ºC - 40ºC

12.Grounding system: ≤2Ω

13. Supply voltage: The waveform is sine wave

14. Wave distortion: <3%

FAQ:

1. When can I get the price?

We usually quote within 6 hours work time after we get your inquiry. If you are very urgent to get price, please call us or tell us in your email so that we will regard your inquiry priority.

2. What about the delivery time for production?

Honestly, it depends on the order quantity and the product. Usually our leading time is within 7 working days after order confirmation.

3. What is your payment terms?

We accept EXW, FOB, CFR, CIF, DDU, ect. You can choose the one which is the most convenient and cost effective for you.

4. How much will the Shipping cost and time be?

This will depend on size of your goods and method of shipping (by sea/ by air/by Express) and your designated seaport or airport. We will be grateful if you can spare us some minutes to evaluate the cost based on the information of product.

5. Could you please tell me the Warranty Period of your product?

Our warranty period is one year free and lifelong maintenance. If the product is damaged (if not man-made damage), in the first year,we will send free parts for replacement. Over warranty, maintenance is paid service.

6. Do you have Technical Backup to all customers from different countries?

To be sure,our technical support is always available and quick response.
We are manufacturer with much on-site testing experience, thus we know how to deal with your problems. Moreover, our engineers can go to your country to support if needed.