Zhejiang Hongdun Electrical Technology Co., Ltd
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Zhejiang Hongdun Electrical Technology Co., Ltd. is located in Liushi, Leqing City, Zhejiang Province. The company headquarters currently has over 200 employees, of which 15% are senior professional and technical personnel. The company has strong product development and customization capabilities, advanced production processes and equipment. The company has passed the national three system standard certification.
The company focuses on the production and sales of high and low voltage electrical components, high and low voltage complete equipment, photovoltaic new energy power equipment, energy storage equipment, and charging station equipment. The company's cooperative units include more than dozens of domestic and foreign first-class enterprises, including State Grid, Southern Power Grid, China Energy Conservation, China Energy, China Power, Huadian, Zhejiang Energy, etc.
Hongdun Electrical
Provide electrical solutions and services for the transmission and distribution field
HDLX-DC Photovoltaic DC combiner box
HDLX-DC photovoltaic DC combiner box is an important component used in photovoltaic series power generation systems to undertake series inverters, AC distribution cabinets, or step-up transformers. The incoming line of this combiner box uses a circuit breaker input, and the output uses a circuit breaker or load isolation switch. After the busbar is combined, secondary lightning protection is used, The maximum rated voltage of the system is AC690V. The protection level is IP65, which is the same as the series inverter. It meets the requirements for outdoor installation and meets the requirements of waterproofing, dust prevention, UV protection, salt spray corrosion prevention, etc.
HDBWX photovoltaic grid box
Photovoltaic grid connection box is a photovoltaic power station built near the user's site, operating in a self use and excess electricity grid mode on the user's side; A photovoltaic grid connected distribution box designed to maximize the safe operation of the system, coordinate the safety of the inverter and the municipal power grid, improve system reliability, and measure electricity. This product has the characteristics of high protection level, long service life, and convenient installation and operation. Its functions include isolation protection, overload protection, short circuit protection, surge grounding protection, overvoltage and undervoltage protection, post recovery reclosing, and power generation energy metering.
HDBWG photovoltaic grid connected cabinet
The HDBWG photovoltaic grid connected cabinet is an important component of the centralized inverter and step-up transformer, or the AC combiner box and step-up transformer. The incoming line of this photovoltaic grid connected cabinet adopts a circuit breaker Device input or direct input, output using circuit breakers or load isolation switches, busbar connection using electroplated or purified busbar, and providing secondary lightning protection. The rated voltage of the system is AC690V, with a protection level of IP40 indoors and IP65 outdoors; For secondary measurement and control cables, cables with a current greater than 2.5mm2 and cables with a voltage greater than 1.5mm2 are controlled to be greater than A 1.0mm2 cable, measuring a current transformer of level 0.5, and measuring a current transformer of level 0.2S. Relevant functions can also be added according to customer requirements. this The product adopts professional electrical design and component selection, making t
YB □ -12 photovoltaic European transformer
The box is made of stainless steel plates, and the paint is imported car paint. All of them are made of curium paint, which is anti smoke, anti damp heat, anti mold, and has strong outdoor weather resistance. The photovoltaic power station is located in an area with low temperature, large temperature difference, high humidity, and frequent sandstorms. The box transformer has a reasonable protective structure, dustproof structure, and low-temperature resistance, which can meet the requirements for normal and safe operation under harsh environmental conditions.
ZGS13-H PV Meibian
The box is made of stainless steel plates, and the paint is imported car paint. All of them are made of curium paint, which is anti smoke, anti damp heat, anti mold, and has strong outdoor weather resistance. The photovoltaic power station is located in an area with low temperature, large temperature difference, high humidity, and frequent sandstorms. The box transformer has a reasonable protective structure, dustproof structure, and low-temperature resistance, which can meet the requirements for normal and safe operation under harsh environmental conditions.
High voltage grid connected cabinet
This product meets relevant national standards and regulations such as the "Design Specification for Photovoltaic Power Generation", "Technical Regulations for Distributed Power Grid Connection", and "3.6kV~40.5kV Switchgear and Control Equipment", and is suitable for distributed and ground photovoltaic power generation high-voltage side connection switchgear equipment (also known as high-voltage grid connected complete switchgear).
Zhejiang Hongdun Electrical Technology Co., Ltd. is located in Liushi, Leqing City, Zhejiang Province. The company headquarters currently has over 200 employees, of which 15% are senior professional and technical personnel. The company has strong product development and customization capabilities, advanced production processes and equipment. The company has passed the national three system standard certification.
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.
Hongdun Electrical
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