CONSTRUCTION ELECTRICITY SAFETY FIELD

CONSTRUCTION ELECTRICITY SAFETY FIELD

05-26

What is meant by high voltage disconnect switch

A high-voltage load switch is an electrical appliance that functions between a high-voltage circuit breaker and a high-voltage disconnect switch. A high-voltage load switch is often used in series with a high-voltage fuse; it is used to control power transformers. The high-voltage load switch has a simple arc extinguishing device, so it can interrupt certain load currents and overload currents. However, it cannot break the short-circuit current, so it is generally used in series with high-voltage fuses for short-circuit protection with the help of fuses.

05-26

The working mechanism of high voltage disconnect switch

High-voltage disconnecting switch ensures the safety of high-voltage electrical appliances and devices during maintenance work, plays the role of isolating voltage, cannot be used to cut off, put in load current and open short-circuit current, and can only be used for certain switching operations that do not produce a strong arc, that is, it does not have an arc extinguishing function; according to the different installation locations, it is divided into, house and house, and according to the number of insulated pillars, it is divided into, single column, double column and triple column, and each voltage There are optional equipment for each voltage level. It can also reliably isolate the part of the high-voltage distribution device that needs to be de-energized from the energized part to ensure the safety of maintenance work. The contacts of the high-voltage disconnect switch are all exposed in the air, with obvious disconnection points, and the disconnect switch has no arc extinguishing device, so it cannot be used to cut off the load current or short-circuit current, otherwise the disconnection point will produce a strong arc under the action of high voltage, and it is difficult to extinguish itself, and may even cause a flying arc (relative to the ground or phase short circuit), burning equipment and endangering personal safety, which is called This is the so-called "pulling disconnect switch with load" serious accident.

05-26

High-voltage load switch terminology

A high-voltage load switch is an electrical appliance that functions between a high-voltage circuit breaker and a high-voltage disconnect switch. A high-voltage load switch is often used in series with a high-voltage fuse; it is used to control power transformers. The high-voltage load switch has a simple arc extinguishing device, so it can interrupt certain load currents and overload currents. However, it cannot break the short-circuit current, so it is generally used in series with high-voltage fuses for short-circuit protection with the help of fuses.

05-26

Difference between high voltage disconnect switch and load switch

1、Load switch is able to break with load and has self-extinguishing function, but its breaking capacity is very small and limited.

01-27

About Connector Industry Manufacturing

As a fast-growing industry, the cable industry information technology construction is still at a relatively early stage, most companies are not on ERP, even on the ERP is also a very primary application, the main information technology support in the financial and daily office. However, the core value of this industry, raw material procurement, product development, marketing and other areas, basically no information technology, for IT companies, this is an industry worthy of attention.

01-27

Industrial plug-in device technology Q&A

1, our company produces industrial plug and socket current is divided into several kinds?

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