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Power Technology

Good news keeps pouring in—Wuhan Nanxing Electric Power Technology Co., Ltd. has consecutively won bids for multiple projects!!!

Recently, under the wise guidance of the company’s leadership and with the active cooperation of all departments, Wuhan Nanxing Electric Power Technology Co., Ltd. has stood out across multiple platforms and projects, securing a series of successful bids totaling over 2 million yuan! These consecutive wins are a testament to the company’s comprehensive strength and technical expertise, and they have greatly inspired us. All members of the Nanxing team are now more determined than ever, working tirelessly and striving for excellence to provide our customers with even higher-quality, more efficient services! Wuhan Nanxing Electric Power Technology Co., Ltd. June 28, 2022

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Good news keeps pouring in—Wuhan Nanxing Electric Power Technology Co., Ltd. has consecutively won bids for multiple projects!!!
Good news keeps pouring in—Wuhan Nanxing Electric Power Technology Co., Ltd. has consecutively won bids for multiple projects!!!

We warmly welcome the experts from Shuifa Xingye Energy (Zhuhai) Co., Ltd. to visit our company for an inspection.

On June 21, a delegation of experts from Shuifa Xingye Energy Co., Ltd. visited our company for an inspection and guidance session. The company’s General Manager, Chen Zesong, along with Technical Engineer Chen and Business Manager Xu, accompanied the group throughout the visit. In the morning, the expert team, guided by General Manager Chen, toured the company’s production workshop and the product testing area. Business Manager Xu provided a detailed overview of the company’s development history, qualifications, technical capabilities, and examples of in-depth collaborative projects. Meanwhile, Technical Engineer Chen offered an in-depth technical analysis of the testing technologies that were of particular interest to the experts. Finally, both sides held discussions on ways to further deepen their cooperation. Following this visit, the expert delegation expressed strong approval of our products, technologies, and after-sales service, which will serve as a significant impetus for strengthening future collaboration. With years of dedicated experience in the industry, our company has earned widespread recognition and praise for both its testing services across various voltage levels and its customized electrical testing solutions. Backed by professional, timely after-sales support, we have built a solid reputation within the sector. Moving forward, we remain committed to fostering win-win partnerships with both new and longstanding clients.

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We warmly welcome the experts from Shuifa Xingye Energy (Zhuhai) Co., Ltd. to visit our company for an inspection.
We warmly welcome the experts from Shuifa Xingye Energy (Zhuhai) Co., Ltd. to visit our company for an inspection.

Working Principle of the Transformer Volt-Ampere Characteristic Tester

When a fault occurs on a distribution line, voltage transformers play a fundamental role in safeguarding the distribution network, as well as associated equipment, motors, and power transformers. Consequently, their functionality is of paramount importance. To test voltage transformers, power‑system personnel must employ a transformer volt‑ampere characteristic tester. What is the basic operating principle of such a tester? The following is an explanation provided by Nanxing’s editor.

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Working Principle of the Transformer Volt-Ampere Characteristic Tester
Working Principle of the Transformer Volt-Ampere Characteristic Tester

When selecting a test transformer, the following factors should be taken into account:

Test transformers are characterized by their compact size, light weight, robust construction, comprehensive functionality, high versatility, and ease of use. They are particularly well suited for power systems, industrial and mining enterprises, research institutions, and other organizations that conduct dielectric strength tests on various high-voltage electrical equipment, electrical components, and insulating materials under power-frequency or DC high voltage. As such, they are indispensable and critical equipment in high-voltage testing. When selecting a test transformer, the following factors should be taken into consideration:

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When selecting a test transformer, the following factors should be taken into account:
When selecting a test transformer, the following factors should be taken into account:

How should a transformer volt-ampere characteristic tester be used?

The output power of the V‑A characteristic tester is expressed in actual voltage and current values, with a standard sinusoidal waveform at a frequency of 50–60 Hz. It can effectively simulate the real operating conditions of transformers, thereby meeting the requirements of relevant national maintenance procedures.

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How should a transformer volt-ampere characteristic tester be used?
How should a transformer volt-ampere characteristic tester be used?

Introduction to the Proper Use of Inflatable Test Transformers

Inflatable test transformers are essential equipment for power‑equipment testing and preventive maintenance. As China’s power industry continues to expand, the required voltage ratings of test transformers have been steadily increasing. Meanwhile, conventional oil‑immersed test transformers are increasingly unable to meet the demands of field operations, whether in terms of size, weight, or performance.

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Introduction to the Proper Use of Inflatable Test Transformers
Introduction to the Proper Use of Inflatable Test Transformers

Analysis of Maintenance Techniques for Transformer Volt-Ampere Characteristic Testers!

Precautions for using the transformer volt‑ampere characteristic tester: The secondary winding of a current transformer must not have a grounding point. Wiring and disconnecting may be performed only when the voltage regulator switch and the output switch are in the open position. Prior to testing, this equipment must be reliably grounded. After completing the test, promptly return the device to the zero position, and never allow it to remain at high voltage or large current for extended periods.

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Analysis of Maintenance Techniques for Transformer Volt-Ampere Characteristic Testers!
Analysis of Maintenance Techniques for Transformer Volt-Ampere Characteristic Testers!

How do you perform a withstand voltage test using a test transformer?

The experimental transformer is assembled from cold‑rolled grain‑oriented silicon steel laminations, with steel clamps used for secure fastening. The high‑voltage winding is a cylindrical, multi‑layer, tower‑type design, wound with polyester‑enameled wire and high‑voltage‑rated insulating materials. The low‑voltage winding is positioned on the outside, while the instrument winding is implemented as an independent winding. The tank is octagonal in shape, and experimental transformers rated at 10 kVA and above are equipped with movable iron wheels. These units feature light weight, compact dimensions, easy portability, and superior performance. For the dielectric withstand test, the procedure is as follows: connect the test leads of the equipment to the designated test points—namely, the transformer windings, shielding, core, frame, and other components that are electrically isolated from one another.

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How do you perform a withstand voltage test using a test transformer?
How do you perform a withstand voltage test using a test transformer?

How to Use a Transformer Volt-Ampere Characteristic Tester!

The transformer volt‑ampere characteristic tester employs a high‑efficiency, low‑loss, premium‑grade booster with a specially wound coil. A microprocessor handles data acquisition, analysis, and storage, while a built-in miniature printer enables on‑site printing of test results and curves. When measuring CT turns ratios, the instrument automatically calculates the ratio value. All testing can be performed by a single operator. The device is lightweight, easy to carry, and simple to operate, offering distinctive performance.

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How to Use a Transformer Volt-Ampere Characteristic Tester!
How to Use a Transformer Volt-Ampere Characteristic Tester!

Detailed Explanation of the Function and Working Principle of Partial Discharge Detectors

Partial discharge testing is a key experimental procedure for assessing the insulation of power equipment, and parameters such as partial discharge quantity serve as critical indicators for evaluating equipment quality. Partial discharge instruments are also known as partial discharge detectors, partial discharge testers, PD meters, or partial discharge test systems. These instruments detect high-frequency signals generated by partial discharges using a receiver, then employ heterodyning to convert these signals into audio frequencies, allowing users to visually assess the discharge intensity on an electronic display. Leveraging advanced ultrasonic visualization principles and sensing technologies, they present results in digital form, sound, and imagery, thereby ensuring the safe and reliable operation of GIS equipment.

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Detailed Explanation of the Function and Working Principle of Partial Discharge Detectors
Detailed Explanation of the Function and Working Principle of Partial Discharge Detectors

Notice of Holiday for the 2022 May Day Labor Day

Notice of Holiday for the 2022 May Day Labor Day

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Notice of Holiday for the 2022 May Day Labor Day
Notice of Holiday for the 2022 May Day Labor Day

This is how to perform daily maintenance and upkeep of AC/DC test transformers.

The AC/DC test transformer employs advanced manufacturing techniques, featuring epoxy vacuum‑impregnated windings and a CD‑type core. Compared with conventional oil‑immersed transformers, it exhibits significantly reduced weight and compact dimensions, while offering enhanced insulation strength and improved resistance to moisture. It also effectively minimizes leakage flux, thereby greatly improving the transformer’s ability to withstand short‑circuit currents during testing. With its small footprint, light weight, compact design, comprehensive functionality, and ease of use, this equipment is ideally suited for power utilities, industrial and mining enterprises, and research institutions. It finds widespread application in lighting systems, machine‑tool electrical equipment, electromechanical devices, medical equipment, rectifier installations, and more. Its performance fully meets the diverse specialized requirements of users, making it an indispensable instrument for performing power‑frequency withstand voltage tests and DC leakage tests on high‑voltage electrical equipment, components, and insulating materials.

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This is how to perform daily maintenance and upkeep of AC/DC test transformers.
This is how to perform daily maintenance and upkeep of AC/DC test transformers.
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