10kVA 50kV Power Frequency Withstand Voltage Device

Product Introduction

Based on the Ministry of Machinery and Electronics' "Test Transformers" standard, the MEYD and TDM series lightweight oil-immersed test transformers are produced with significant advancements over earlier models of a similar nature. The MEYD(G) series test transformers were improved in compliance with the national standard "ZBK-41006-89" to create the TDM(G) series lightweight AC/DC high-voltage test transformers, a new product line. Compact size, lightweight design, integrated functionality, great versatility, and easy operation are characteristics of this series. It is especially useful for testing the insulation strength of different high-voltage electrical equipment, components, and insulating materials in power systems, industrial and mining businesses, and research facilities under power frequency or DC high voltage. For high-voltage testing, it is an essential piece of equipment.

Product Parameter (specification)

Capacity	1.5 kVA – 500 kVA
Operating Voltage	AC 220V (380V)
Temperature	0°C to 40°C
Altitude	<1000m
Relative Humidity	<90%
The operating environment must be free of gases, vapors, chemical dust, or other explosive and corrosive media that could severely compromise insulation.

Product feature and application

1. Compact Structure:

Single-frame core design with coaxial windings minimizes stray flux and maximizes coupling efficiency. The octagonal housing offers an aesthetically pleasing appearance with a small footprint and lightweight construction for easy handling.

2. Practical Functionality:

MEYD(G) series supports power frequency withstand voltage tests; TDM(G) series offers switchable AC/DC modes for insulation strength, leakage, and other tests. Supports cascading multiple units for flexible output voltage expansion.

3. User-Friendly Operation:

Paired with dedicated control panels/desks, featuring precise voltage regulator adjustment, selectable voltage-boosting methods, simple wiring, and comprehensive accessories.

4. Safety and Reliability:

Critical components like the housing and high-voltage terminals require reliable grounding. Protective features such as current-limiting resistors and protective spark gaps can be configured. Strict adherence to national standards ensures safe testing.

Prodection details

Suitable for power systems, industrial and mining enterprises, and research institutions, this equipment is used to perform power frequency/DC high-voltage insulation strength tests on high-voltage electrical equipment, electrical components, and insulating materials.

Company Qualifications

FAQ

1)What are the design features of the MEYD-W10kVA/50kV test transformer's enclosure?

Answer: The enclosure adopts an octagonal structure that complements the core design. This not only provides an aesthetically pleasing appearance but also facilitates internal structural layout. Equipped with handles, it allows for easy transportation and deployment.

2)What special grounding requirements apply to the second and third-stage equipment during cascaded testing with the MEYD-W10kVA/50kV test transformer?

Answer: During cascade testing, the low-voltage winding X terminals, measurement winding F terminals, and high-voltage winding X terminals (high-voltage tails) of the second and third-stage test transformers must all be grounded to their respective equipment housings. The housings of these two stages must be grounded via insulating supports, not directly to earth.

3)What is the correct shutdown procedure for the MEYD-W10kVA/50kV test transformer after completing a test?

Answer: After the test concludes, return the voltage regulator to the zero position at a steady speed within a few seconds before disconnecting the power supply. For tests such as DC leakage testing, ensure thorough discharge of both the test specimen and the test apparatus itself to guarantee operational safety.

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