What Is The Difference Between Low-voltage Distribution Box And High-voltage Distribution Box?

Low-voltage distribution boxes and high-voltage distribution boxes play different roles in the power system. The differences between them are mainly reflected in the following aspects:

Rated voltage:
Low-voltage distribution box: The rated working voltage is 1000V and below, and it is mainly used in low-voltage distribution systems with a voltage not exceeding 4000V. Among them, the common distribution system with a rated voltage of 380v is used for power, lighting and power distribution.
High-voltage distribution box: The rated working voltage is above 3kV, and it is usually used to transmit electric energy to large industrial and commercial electrical equipment. The voltage level is often above 1kV, and even reaches above 10kV.
Use environment and installation location:
Low-voltage distribution box: It is usually installed inside a building or in a factory workshop. Due to its small size and relatively simple structure, it is relatively easy to install and maintain.
High-voltage distribution box: It is usually installed outdoors or in a substation. Due to its large size and complex structure, installation and maintenance require more professional knowledge and skills.
Function and role:
Low-voltage distribution box: It is mainly used for the distribution, control and protection of low-voltage electric energy. It can distribute the electric energy of the high-voltage transformer to each end user, and provide power-off protection when the circuit is overloaded, short-circuited and leaking. Low-voltage distribution boxes are widely used in industrial manufacturing, commercial buildings, medical and health fields.
High-voltage distribution box: mainly used for the distribution, control and protection of high-voltage electric energy. It is the power supply device in the high-voltage power distribution device of the whole vehicle, which realizes the distribution and control of high-voltage electric energy by controlling components such as switches and fuses. High-voltage distribution boxes are widely used in various industrial and mining enterprises, residential areas, commercial fields and transportation fields.
Appearance and structure:
Low-voltage distribution box: small in size, relatively simple in structure, usually made of aluminum alloy or plastic, and relatively light in appearance.
High-voltage distribution box: large in size, complex in structure, usually welded with steel plates, with strong mechanical properties and explosion-proof capabilities.
Operation and maintenance:
Low-voltage distribution box: due to its low voltage, operation and maintenance are relatively simple, and ordinary personnel can perform it after training.
High-voltage distribution box: due to the high voltage, operation and maintenance require more professional knowledge and skills, and are usually performed by professionals.