YDQ Inflatable High-Voltage Test Transformer - Yangzhou Darui

YDQ Inflatable High-Voltage Test Transformer - Yangzhou Darui

Published: 2024-06-30 13:04:48

Category: Transformer Test Device

Product Description

YDQ Inflatable High-Voltage Test Transformer

Darui Electric recommends:

Product Introduction

The inflatable AC test transformer is essential testing equipment for power equipment inspection and preventive testing. With the development of China's power industry, the voltage level requirements for test transformers are increasingly higher, while traditional oil-immersed test transformers, whether in terms of volume, weight, or performance, are increasingly unable to meet on-site work requirements.

With the progress of basic scientific research in China and the application of new materials and processes, the new medium sulfur hexafluoride gas has been introduced into the application field of power equipment. Due to the excellent insulation and arc extinguishing properties of sulfur hexafluoride gas, as well as its non-flammability, it has been widely used as a new insulating medium.

After years of efforts, our company has successfully developed the inflatable AC test transformer. Compared with traditional oil-immersed light test transformers, this series of products is 20%-60% lighter in weight (depending on voltage and capacity level), and has no oil pollution. The voltage level of a single inflatable AC test transformer can reach 300KV. Due to the adoption of new production processes, the technical performance of the products has been greatly improved, especially suitable for on-site work and frequent mobile working conditions.

Product Aliases

YDQ AC/DC SF6 gas test transformer, inflatable test transformer, high-voltage withstand voltage test device, power high-voltage test transformer, ultra-light high-voltage test transformer, high-voltage test transformer, power frequency withstand voltage test device, inflatable test transformer, SF6 gas high-voltage withstand voltage tester, gas test transformer

Product Features

1. Small size and light weight (40%-65% lighter than oil-immersed test transformers of the same level)

2. Clean, no oil contamination, no maintenance required;

3. Unaffected by harsh climate conditions, can be tested immediately after on-site handling without needing to rest;

4. Insulation strength is significantly higher than oil-immersed test transformers, with minimal corona;

Product Parameters

1. Voltage level: 10kV～600kV

2. Capacity range: 1～500KVA

3. No-load current: <7%

4. Impedance voltage: <8%

5. Product types: AC, AC/DC, AC cascade, AC/DC cascade

Selection of test transformer:

The rated voltage on the high-voltage side should not be less than the maximum test voltage of the test object, and the rated current should not be less than the maximum capacitive current of the test object.

The calculation formula for the capacitive current of the test object and the required capacity of the test transformer is:

I = 2π f Cx U × 10 -6

U I = 2π f Cx U 2 × 10 -9

Where I — capacitive current of test object, A; f — power frequency, Hz;

Cx — capacitance of test object, μF; U — effective value of test voltage, V;

Se — required rated capacity of test transformer, KVA

The capacitance Cx of the test object can be measured by an AC bridge. The commonly used capacitance of test objects is selected according to the table below.

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Product Details

YDQ Inflatable High-Voltage Test Transformer - Yangzhou Darui