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2019-12

Analysis of Inspection and Approval for Partial Discharge Testing on Several Sides of the Transformer

Variable-potential multi-terminal measurement is primarily used to determine whether the location of partial discharge lies between the winding and ground or within the winding itself. This is because, under these two wiring configurations, the UU14 two-phase support with one phase remaining unchanged persists. However, the induced voltage multiplication factor Et is significantly lower in the latter case than in the former; therefore, if the partial-discharge data before and after the test are essentially consistent, it is more likely that the partial discharge originates at the end of the winding. Conversely, if there is a substantial difference between the pre- and post-test partial-discharge data, it is more probable that the partial discharge occurs inside the winding—particularly between turns, between饼s, or between layers.

2019-12-10

Analysis of Inspection and Approval for Partial Discharge Testing on Several Sides of the Transformer

2019-12

State Grid Takes the Lead in Deploying Electric Vehicle Charging Stations in Beijing

Following its lead over oil companies in setting industry standards, power utilities have once again taken the initiative in Beijing’s race to establish a comprehensive network of electric-vehicle charging stations. Yesterday, a representative from State Grid Beijing Electric Power Company (hereinafter referred to as “Beijing Electric Power”) disclosed that the company will soon commence construction of EV charging stations across the city and is on track to complete Beijing’s first such station next month.

2019-12-10

State Grid Takes the Lead in Deploying Electric Vehicle Charging Stations in Beijing

2019-12

Accelerated Grid Development: Smartization Becomes the Trend in Low-Voltage Electrical Apparatus

After more than 50 years of development, the low-voltage electrical appliance industry has now established a relatively complete industrial system, with products that are widely used and boast enormous market potential. Based on the demand for distribution equipment required to support newly added power-generation facilities during the Eleventh Five-Year Plan period, as well as the need for replacement and maintenance of existing power equipment, it is estimated that the total demand for products such as universal circuit breakers, molded-case circuit breakers, miniature circuit breakers, AC contactors, thermal relays, and residual-current circuit breakers will exceed 200 million units.

2019-12-10

Accelerated Grid Development: Smartization Becomes the Trend in Low-Voltage Electrical Apparatus

2025-04

Prospects for the Electrical Industry in 2025

In 2025, China’s electrical industry is poised for robust growth, driven by policy support, technological innovation, and strong market demand. The following provides a comprehensive analysis across several dimensions: market size, technology trends, the policy environment, specific sub-sectors, and investment priorities.

2025-04-03

Prospects for the Electrical Industry in 2025

2024-03

Transformers: Principles and Structural Analysis

In both daily life and industrial production, the transformer undeniably plays a crucial role. It acts as an invisible bridge, connecting disparate circuits and systems to ensure the smooth flow of electric current. Its presence enables efficient long-distance power transmission with minimal losses, powers our household appliances, and provides a steady supply of energy to drive a wide range of machinery. A remarkable achievement of technology and engineering, the transformer silently underpins the driving force behind human societal progress.

2024-03-11

Transformers: Principles and Structural Analysis

2022-11

Some Causes of Overheating in Electrical Equipment

The primary functions of electrical equipment are to transmit, distribute, and convert electrical energy, all of which are accomplished through the flow of electric current. Many faults and accidents in electrical equipment are caused by overheating; early detection and elimination of such overheating can significantly reduce failures and incidents in power systems, thereby enhancing the reliability of power supply.

2022-11-28

Some Causes of Overheating in Electrical Equipment

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Guogui Electric provides high-quality turnkey solutions and complete product sets to numerous customers.

Tel:+86-771-6666681 +86 13557318360

Mobile: +86-18776973334

Address: No.17 Yingkai Road, Jiangnan District, Nanning, Guangxi, China

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