Distribution box knowledge explanation

Sep 14,2024

     

The distribution box is a very important component of the power system. It is a key node for power transmission in the power system and a core device for power distribution and control. In modern industry and life, the distribution box has become an indispensable device. Below we will explain the knowledge of the distribution box in detail from the aspects of the definition, composition structure, function, type, etc. of the distribution box.

Ⅰ. Definition of distribution box

 

     The distribution box (Distribution Cabinet) refers to a device used to receive power from the power line. It uses switching elements such as multi-way fuses or air switches to distribute and control power. It is also an important link in the power system. Its main function is to convert high-voltage power into low-voltage power through a transformer, and then distribute the low-voltage power to various electrical equipment.

 

Ⅱ. Composition structure of the distribution box

1. The outer shell of the distribution box: usually made of iron plate, with strong corrosion resistance and seismic resistance.

2. Main switch: used to switch the power supply on and off, and control the power supply of the entire distribution box.

3. Fuse and air switch: mainly used to protect the safety and stability of the circuit. It can automatically cut off the power supply in case of current overload, short circuit, etc. to prevent accidents such as fire.

4. Current transformer: used to measure current. By measuring current, the safety and stability of the circuit can be ensured.

5. Voltage transformer: used to measure voltage. By measuring voltage, the safety and stability of the circuit can be ensured.

6. Electric energy meter: used to measure the power consumption, which plays a very important role in the measurement and statistics of electric energy.

 

III. The role of the distribution box

1. Realize the access and disconnection of the power supply and control the power supply of the circuit.

2. Protect the safety and stability of the circuit through switching elements such as fuses and air switches.

3. Measure the circuit through measuring elements such as current transformers and voltage transformers to ensure the safety and stability of the circuit.

4. Measure and count the consumption of electric energy through measuring elements such as electric energy meters, which plays a very important role in the management and use of electric energy.

 

Ⅳ. Types of distribution boxes

1. Low-voltage distribution box: Mainly used in low-voltage power systems, to distribute electric energy to various electrical equipment according to certain needs.

2. Medium-voltage distribution box: Mainly used in medium-voltage power systems, high-voltage electric energy is converted into low-voltage electric energy through transformers, and then low-voltage electric energy is distributed to various electrical equipment.

3. High-voltage distribution box: Mainly used in high-voltage power systems, high-voltage electric energy is converted into low-voltage electric energy through transformers, and then low-voltage electric energy is distributed to various electrical equipment.

 

The distribution box is an indispensable part of the power system. Its function is not only to distribute electric energy to various electrical equipment, but also to ensure the safety and stability of the circuit, and to measure and manage electric energy. Therefore, we should attach importance to the use and maintenance of the distribution box to ensure its normal operation and avoid accidents.

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