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Five common failure of high and low voltage switchgear Feb 23 , 2021

Analyze the reasons for the failure of the high and low voltage switchgear, mostly in the insulation, conductivity and mechanical aspects. 1. Insulation failure: Insulation level is to correctly handle the relationship between various voltages (including operating voltage and various overvoltages) acting on the insulation, various voltage limiting measures, and insulation strength. Strive to make ...

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What is Switchgear Enclosure IP Rate Feb 05 , 2021

IP (INGRESS PROTECTION)protection grade system is drafted by IEC (INTERNATIONAL ELECTROTECHNICAL COMMISSION), which classifies electrical appliances according to their dust and moisture resistance. The foreign objects referred to here include tools, and human fingers, etc., should not touch the live parts of the appliance to avoid electric shock. IP protection level representation method: The prot...

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Definition and classification of medium voltage switchgear Feb 02 , 2021

Defination of medium voltage switchgear Switchgear is the common name of metal-enclosed switchgear. In the busbar section system, it is used to receive and distribute electric energy, and to control, protect, monitor and measure the power circuit. According to the definition of GB3906 (3.6～40.5kV metal-enclosed switchgear), metal-enclosed switchgear refers to a switchgear that is completely enclos...

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Classification and Compartment Introduction of low-voltage switchgear Jan 26 , 2021

First, ASHARE company would like to introduce the classification of LV switchgear. By the structure 1) Fixed type switchgear It can satisfy that the electrical components are reliably fixed in the determined position in the cabinet. The shape of the cabinet is generally cubic, such as screen type, box type, etc., and there are also prisms such as table top. This kind of cabinet has a single row an...

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What is Smart Switchgear? Jan 14 , 2021

Smart switchgear China Supplier is a new generation of intelligent medium voltage switchgear that our company absorbs domestic and foreign advanced design and manufacturing technology and independently innovates. The switchgear adopts domestic technology-leading permanent magnet vacuum technology or mature spring operating mechanism technology, and integrates modern advanced sensor technology...

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How to operate the feeder cabinet? Jan 05 , 2021

Feeder cabinet is one kind of metal clad switchgear, how does feeder cabinet give power supply? Do you know how to operate, please follow below instruction: Preparation before power transmission Confirm that there are no leftovers and tools on the handcart and in the cabinet The grounding switch should be in the closed state (Note: the product must pass the product handover test after installation...

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The Functions Of The Ring Main Unit (RMU) Dec 29 , 2020

The functions of the Ring Main Unit system include: 1、Remote opening and closing or closing latching operation of the load switch or circuit breaker of each ring main unit from the control master station or sub-station, also can do it locally. 2、Obtain the contact position state, fuse state, circuit breaker fault protection state, contact position state of earthing switch and other information fro...

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To order switchgear,what should you do first? Dec 24 , 2020

The user shall provide the following information when ordering Switchgear: 1、Main wiring diagram, plane layout diagram and the model and specification of main electrical components. 2、Schematic diagram of secondary circuit and terminal arrangement diagram. If not, will according to the manufacturer's standard. 3、Material and specification of main bus and branch bus. If not, will according to the m...

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What is the difference between GGD,GCK,GCS type switchgear? Dec 17 , 2020

What is the difference between GGD,GCK,GCS type switchgear? GGD： GGD type AC low voltage distribution cabinet is suitable for power distribution system with ac 50/60Hz, rated working voltage 380V, rated working current 1000-3150A for power substation, power plant, industrial and mining enterprises and other power users. It is used for power conversion, distribution and control of power generation,...

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When you want to buy switchgears, you should know some basic knowledge(part 3) Dec 15 , 2020

When you want to buy switchgears, you should know some basic knowledge for "What? How? Why?" (part 3) 27、What kinds of circuit breakers are there? 1) Vacuum circuit breaker: Use vacuum as arc extinguishing medium and main insulating medium. The dynamic and static contacts of arc extinguishing are sealed in vacuum arc extinguishing room. There are mainly 10VK and 35KV voltage classes. 2) SF6 circui...

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