Henan High Voltage Apparatus Research Institute Co., Ltd.

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Hegao Institute Held Regular Meeting of Henan Transformer (High Voltage Electrical Apparatus) Industry Association

Hegao Institute Held Regular Meeting of Henan Transformer (High Voltage Electrical Apparatus) Industry Association

On March 20, the regular meeting of Henan transformer (high voltage electrical appliance) industry association was held in the Institute, and the relevant responsible persons and experts of more than 50 member enterprises attended the meeting. The Institute has publicized and interpreted the relevant testing scheme for improving the energy efficiency of transformer products, which has greatly promoted the further expansion of transformer manufacturers in the province and the improvement of industry popularity.

27

2021

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05

Safety precautions in the use of high voltage electrical equipment

Safety precautions in the use of high voltage electrical equipment

1. Quality control of high-voltage electrical equipment during maintenance The maintenance personnel of high-voltage electrical equipment must be professionally trained and familiar with the internal structure of the equipment; the professional and technical personnel of the user unit must prepare practical maintenance procedures. Disassembly and overhaul of high-voltage electrical equipment

01

2020

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09

How to divide low-voltage electrical appliances and high-voltage electrical appliances!

How to divide low-voltage electrical appliances and high-voltage electrical appliances!

How to divide low-voltage electrical appliances and high-voltage electrical appliances: 1. Low-voltage electrical appliances: refers to the low-voltage electrical equipment that we refer to in our daily life refers to the equipment that undertakes on-off control in the 380/220V power grid. Low-voltage electrical appliances are components or equipment that can be manually or automatically connected and disconnected according to external signals and requirements to realize the switching, control, protection, detection, transformation and adjustment of circuits or non-electrical objects. Control appliances according to the level of its working voltage, with AC 1000V, DC 1500V as the boundary, can be divided into two categories of high-voltage control appliances and low-voltage control appliances. In general, low-voltage electrical appliances can

24

2020

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08

Classification of High Voltage Apparatus

Classification of High Voltage Apparatus

Classification of high-voltage electrical appliances (1) switching electrical appliances: such as circuit breakers, isolating switches, load switches, grounding switches, etc. (2) protective electrical appliances: such as fuses and lightning arresters; (3) measuring electrical appliances: such as voltage transformers and current transformers; (4) current limiting electrical appliances: such as reactors and resistors; (5) complete sets of electrical appliances and combined electrical appliances; (6) Others: such as power capacitors.

24

2020

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08

Congratulations on the official launch of

Congratulations on the official launch of "Henan High Voltage Electrical Apparatus Research Institute Co., Ltd!

The company was established in Zhengzhou City in May 1993 with the approval of the former Henan Provincial Department of Machinery Industry and the Henan Provincial Science and Technology Commission. In August 2007, the company moved to Pingdingshan City as a whole. In September 2017, the company completed its corporate restructuring with an existing registered capital of 20.01 million yuan. After nearly 30 years of development, the company has developed from an ordinary local scientific research institution to a supporting unit of the National High-voltage Electrical Appliance Quality Supervision and Inspection Center (Henan), and has gradually grown into a newly built national laboratory and advanced testing system in China., A third-party test and testing organization with first-class domestic technology. The company's business scope is mainly

24

2020

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07

How much do you know about low-voltage appliances in your life?

How much do you know about low-voltage appliances in your life?

There are many kinds of low-voltage electrical appliances, and there are many kinds of classification methods. 1. According to the mode of action, it can be divided into: (1) manual electrical appliances-electrical appliances that rely on direct external force to switch, such as knife switches, button switches, etc. (2) Automatic electrical appliances-electrical appliances that automatically act on instructions or changes in physical quantities, such as contactors, relays, etc. According to the purpose can be divided into: (1) low-voltage control electrical appliances-mainly in the low-voltage power distribution system and power equipment play a control role, such as knife switch, low-voltage circuit breaker. (2) Low-voltage protection appliances-mainly in the low-voltage distribution system and power equipment to play a protective role, such as fuses, thermal relays, etc. 3. According to the type can be divided into: knife switch, knife switch, fuse, low voltage circuit breaker, contactor, relay, master electrical and automatic switch.

24

2020

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07

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