ABOUT

Zhejiang Hongdun Electric Technology Co., Ltd. is situated in Liushi, Yueqing City, Zhejiang Province, often referred to as the "China’s Electrical Appliances Capital" The company employs over 100 staff members, with 15% being mid to senior-level technical professionals. We leverage technology to enhance our product research, development, and production capabilities. Our manufacturing and testing equipment ensure the reliability of our product quality. The company has successfully obtained national three-system certification, "CCC" mandatory certification, and various export product certifications.

Our primary business involves the production and sale of high and low voltage electrical components, complete sets of high and low voltage equipment, photovoltaic new energy power equipment, energy storage solutions, and charging pile equipment. We collaborate with numerous domestic and international enterprises, including the State Grid Corporation of China, China Southern Power Grid, China Energy Conservation Investment Corporation, China Energy Group, China Electronics Technology Group Corporation, China Huadian Corporation, and Zhejiang Energy Group Co., Ltd.



Hongdun Electrical

Provide electrical solutions and services for the transmission and distribution field
XCHBN-12 Energy-saving and environment-friendly full insulation ring network cabinet

XCHBN-12 Energy-saving and environment-friendly full insulation ring network cabinet

Since the 1950s, the development of medium voltage switchgear has gone through stages such as open type, box type, and metal enclosed type. There are no longer any problems in meeting the functional usage requirements of the equipment, and the products have already been serialized and fully covered. The rapid development of environmentally friendly gas insulated ring network cabinets, which are small in size, maintenance free, highly modular, and safe and reliable, can achieve remote monitoring, control, and management of the power system distribution network, and meet the requirements of power grid optimization, electricity safety, energy management, and energy conservation and consumption reduction; The system can also be widely used in intelligent power distribution fields such as transportation, factories, hospitals, schools, buildings, residential communities, and commercial office buildings.

HXGN □ -12 (SF6) Unit type AC metal closed ring network switchgear

HXGN □ -12 (SF6) Unit type AC metal closed ring network switchgear

HXGN □ -12 (SF6) type unit type AC metal enclosed ring network switchgear (hereinafter referred to as ring network cabinet) is a high-voltage electrical product that we have successfully designed and developed in accordance with the requirements of domestic rural power and urban network renovation by introducing leading foreign technology. All technical performance indicators meet the IEC298 and GB3906 standards.

KYN61-40.5 (Z) Ar mored removable AC metal enclosed switchgear

KYN61-40.5 (Z) Ar mored removable AC metal enclosed switchgear

KYN61-40.5 (Z) armored movable AC metal enclosed switchgear (hereinafter referred to as switchgear) is a complete indoor distribution device with three-phase AC 50Hz and rated voltage of 40.5kV. As a power plant, substation, and industrial and mining enterprise to receive and distribute electricity. It has functions such as control, protection, and detection for circuits, and can also be used in places with frequent operations. This switchgear complies with standards such as GB/T11022-1999, GB3906-1991, and DL404-1997.

KYN28-24 (Z) Armored Removable AC Metal Enclosed Switchgear

KYN28-24 (Z) Armored Removable AC Metal Enclosed Switchgear

KYN28-24 (Z) series armored movable AC metal switchgear (hereinafter referred to as "switchgear") is a complete set of distribution equipment for 20kV three-phase AC 50 (60) Hz single busbar and single busbar segmented system. Mainly used for power plants, small and medium-sized generators for power transmission, industrial and mining enterprises for power distribution, as well as for receiving and transmitting electricity in secondary substations of electrical systems, as well as starting large high-voltage motors. Implement control, protection, and monitoring.

KYN28A-12 Armored Removable AC Metal Enclosed Switchgear

KYN28A-12 Armored Removable AC Metal Enclosed Switchgear

This device is an indoor metal armored withdrawable switchgear (hereinafter referred to as switchgear), which is a complete set of distribution equipment for 3.6-12 kV three-phase AC 50Hz single busbar and single busbar segmented system. It is mainly used for power plants, small and medium-sized generators, industrial and mining enterprises, as well as secondary substations in the electrical system for receiving and transmitting electricity, and starting large high-voltage motors. For the purpose of control, protection, and monitoring, this switchgear meets the requirements of IEC298, GB3906, and other standards. It has interlocking functions to prevent loaded push-pull circuit breaker handcart, prevent accidental opening and closing of circuit breakers, prevent closing of circuit breakers when the grounding switch is in the closed position, prevent accidental entry into the live room, and prevent accidental closing of the grounding switch when powered on. It can be equipped with both

HXGN66-12 Fixed Metal Enclosed Switchgear

HXGN66-12 Fixed Metal Enclosed Switchgear

HXGN66-12 fixed metal enclosed switchgear (hereinafter referred to as switchgear) is a complete set of high-voltage electrical products newly launched by our company, which meets the requirements of the national standard GB/T3906 "3.6kV-40.5kV AC metal enclosed switchgear and control equipment" DLT404 "Technical Conditions for Ordering Indoor AC High Voltage Switchgear" of the Ministry of Electric Power, and also meets the international standard IEC60298 "Requirements for AC metal enclosed switchgear and control equipment above 1kV and below 52kV".

PRODUCTS

Zhejiang Hongdun Electric Technology Co., Ltd. is situated in Liushi, Yueqing City, Zhejiang Province, often referred to as the "China’s Electrical Appliances Capital" The company employs over 100 staff members, with 15% being mid to senior-level technical professionals. We leverage technology to enhance our product research, development, and production capabilities. Our manufacturing and testing equipment ensure the reliability of our product quality. The company has successfully obtained national three-system certification, "CCC" mandatory certification, and various export product certifications.

Photovoltaic Grid Connection Scheme
NEWS CENTER

Overview of high-voltage switchgear

Interlocking between the position of the high-voltage switchgear handcart and the circuit breaker

Countermeasures for discharge of high-voltage switchgear

Standardize selection and installation. When installing and processing the chamfer of the busbar and copper busbar, it should be strictly operated in accordance with relevant specifications. By increasing the curvature radius of the electrode to optimize its shape, the electric field is uniformly distributed, thereby increasing the gap breakdown voltage. To avoid excessive concentration of local electric fields, when overlapping the busbar, the exposed part of the fixing bolt should not exceed 3 teeth, and the overlapping part of the busbar should ensure a flat surface. For the selection of shielded contact boxes, select contact boxes with shielding design to achieve uniform distribution of electric field and prevent excessive concentration of electric field. In order to enhance the anti fouling ability, a dual screen casing design is selected.

Types and Common Fault Analysis of High Voltage Switchgear

High voltage switchgear is a very important electrical equipment in the power system. The deterioration of the operating status of the switchgear is one of the reasons for power system failures. So, what are the common faults of high-voltage switchgear?

Quality assurance of switchgear

By investigating and analyzing the processes and operations that affect product quality. Quality records. Investigate and analyze various reports and opinions of Party A (or its representatives), identify potential causes of product quality issues, and propose preventive measures.

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Hongdun Electrical

技术服务热线:+86-180 6625 7333 / +86-138 6871 8448 / +86-150 5890 6333
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