The difference between high-voltage and low-voltage switchgear, what are the differences between high-voltage and low-voltage?

High-voltage cabinets and low-voltage cabinets are relatively common in daily life, and the scope of use is also different because the voltage and current between the two are different, so the voltage and current they can withstand are also different. In the process of use, it also needs more attention. In this article, the manufacturer of high and low-voltage complete sets of cabinets briefly talks about the differences between the high-voltage and low-voltage forms of complete sets of power distribution cabinets. I hope it can be of some help.

Box type fixed metal enclosed switchgear

(1) The scope of use is different
High-voltage switchgear is mainly used in power supply bureaus or substations. The voltage and current that need to be used in these places are relatively high; high-voltage and low-voltage complete cabinets tell you that low-voltage switchgear is mainly suitable for some high-rise buildings or small enterprises. , the required voltage and current will be slightly lower.
(2) Different in nature
As the name implies, the high and low-voltage switchgear is a device for connecting high-voltage or low-voltage cables. Low-voltage switchgear is a product listed in the "Catalogue" of 3C certification compulsory certification products.
(3) The voltage is different
High-voltage switchgear is used in high-voltage power systems. Generally, high-voltage switchgear is used for electrical systems above 10KV; low-voltage switchgear is mainly used for power systems below 1KV.
(4) Different performance
High-voltage switchgear is used for high-voltage power, which can withstand high voltage and high current, and has a strong arc extinguishing ability; low-voltage switchgear cannot withstand high voltage and high current, and can only adopt the method of arc extinguishing.

Low voltage draw-out switchgear assembly GCK

(5) Look at the electrical components in the cabinet
Manufacturers of high and low-voltage cabinets tell you that high-voltage cabinets are generally equipped with vacuum circuit breakers, load switches, disconnectors, sensors, etc. Low-voltage cabinets are generally equipped with universal circuit breakers, molded case circuit breakers, knife switches, C45, etc.
(6) different models
Common models of high-voltage switchgear include the KYN series, XGN series, HXGN series, GG1A, JYNGBC, etc.; common models of low-voltage switchgear include GGD, MNS, Gcs, GCK, XL, PZ, JXF, etc.

Manufacturers of high and low-voltage complete sets of cabinets share how the electrician judges high-voltage cabinets and low-voltage cabinets.
(1) In the electrical industry, master electricians need to be familiar with the drawings of cooked paper. Among the drawings, high-voltage cabinets and low-voltage cabinets will also be different. There are many models of high-voltage cabinets, such as the KYN series or GBC series, and the main models of low-voltage cabinets are GGD and XPS series.
(2) Look at the nameplate of the switch cabinet
Regular high and low-voltage switchgear will have a nameplate when it leaves the factory, and it is generally installed on the upper left or upper right of the switchgear. The nameplate will clearly indicate the name, model, rated current, rated voltage, etc. of the switchgear.
(3) Look at the voltage
If it is below 1000 volts, it is undoubtedly a low-voltage cabinet. If it exceeds 1000 volts, it is a high-voltage cabinet. Common high-voltage cabinets can reach 10 kV or 35 dry volts, while low-voltage cabinets are generally 220 volts or 380 volts. The unit of high-voltage switchgear is VK, and the unit of low-voltage switchgear is V.

(4) See if there is a "five-proof" interlocking device
High-voltage switchgear needs to have "five-proof" interlocking devices, while low-voltage switchgear is not mandatory, generally not. 4. Look at the cabinet
Due to safety considerations, the high-voltage switchgear is generally wider and thicker than the low-voltage switchgear; in addition, the high-voltage switchgear has a grounding switch, and the low-voltage switchgear does not.
(5) Look at the internal accessories
The components in the switchgear need to meet the voltage level, such as circuit breakers, switches, and other components, there is still a big difference between high voltage and low voltage.

High and low-voltage complete cabinet manufacturer summary: The above is the relevant content about the difference between high-voltage cabinets and low-voltage cabinets introduced by the manufacturer of high-voltage and low-voltage cabinets. I hope it can be of some help. If you want to know more, you can follow us.