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Precautions for the use of high-voltage cabinets:
1. Each cabinet can accommodate two outgoing circuits. 2. A vacuum contactor capable of electrical power after closing should be used as an accessory. 3. Keep yourself in captivity for single-pipe installation. 4. Operating environment temperature: -15~40℃. 5. The altitude of the operating enviro...Read more -
10kV drop out fuse fault prevention measures
1、 Reasonable selection of drop out fuse 10kV drop fuse is suitable for the environment without conductive dust, corrosive gas, inflammable, explosive and other dangerous environment. The annual temperature difference ratio is less than ± Outdoor places within 40 ℃. The selection i...Read more -
Installation and service environment of drop out fuse
1.Environmental conditions for installation and use: 1) Normal use conditions: the ambient temperature is not higher than + 40 ℃ and not lower than – 40 ℃; The altitude shall not exceed 1000m; The maximum wind speed shall not exceed 35m / s; The intensity of the earthquake did not ex...Read more -
Operation method and procedure of drop type fuse with load
Operation method and procedure of drop type fuse with load In the branch line of 10KV distribution line of rural power grid and distribution transformers with rated capacity less than 200V, they should be operated with load according to the following requirements: 1. The drop type fuse shall be o...Read more -
Provisions for installation of drop fuses
Provisions for installation of drop fuses 1. porcelain should be good, fuse tube should not be moisture absorption expansion, bending phenomenon. The center line of the upper and lower contacts of the fuse tube and the axis of the fuse tube should be in the same plane without twisting. 2. The dro...Read more -
Characteristics of vacuum circuit breaker:
(1) Light structure, small contact distance (10 kV, only 10 mm), quick action, light operation, small volume and light weight. (2) The arcing time is short, because the contact is in vacuum, there is basically no arc, and the very small arc can be extinguished in half cycle (0.01 second), so it i...Read more -
Several differences between air circuit breaker and vacuum circuit breaker
Air circuit breakers, especially novice electricians, don’t have much contact with vacuum circuit breakers, or even heard of them. But literally, if there is an air circuit breaker, there will naturally be a vacuum circuit breaker against it. What is the difference between this vacuu...Read more -
What is the difference between an isolating switch and a load switch and a vacuum circuit breaker?
Regarding the difference between an isolating switch and a load switch and a vacuum circuit breaker, the isolating switch has no special arc extinguishing device, and its arc extinguishing ability is weak. The load switch is a branch with a special arc extinguishing contact, arc extinguishing dev...Read more -
What’s the difference between circuit breaker and air switch
1. Difference of voltage level: generally, the voltage level of air switch is below 500V, while circuit breaker can be applied to all voltage levels above 220V 2. The ability of breaking current is different: the general circuit breaker can bear more load and short circuit current 3...Read more -
Selection conditions of vacuum circuit breakers
Regarding the selection conditions of vacuum circuit breakers, the selection of vacuum circuit breakers should be considered from several aspects, including frequent operation places, preferably “integrated” structure, 10kV voltage level is preferably vacuum circuit breaker, the selec...Read more -
The development trend of vacuum circuit breakers, common faults of vacuum circuit breakers
The development trend of vacuum circuit breakers The superiority of vacuum circuit breaker is not only oil-free equipment, but also shows that it has long electrical life, mechanical life, large breaking insulation capacity, strong continuous breaking capacity, small size, light weight, an...Read more -
The working principle of vacuum circuit breaker
The working principle of vacuum circuit breaker and the role of vacuum circuit breaker in power system. The vacuum circuit breaker is named after its arc extinguishing medium and the insulating medium of the contact gap after the arc extinguishing are high vacuum; it has the advantages of ...Read more