In the process of factory production and operation, the safety of power system is very important. As an important part of electrical equipment, circuit breakers and power cabinets play an important role in protecting circuits and equipment. This article will introduce the selection principles and precautions of circuit breakers and cabinets used in factories to help factory managers correctly select and arrange these equipment to ensure the stability and safety of the factory power system.

1. Selection of circuit breaker for factory use

1.1 rated current

• the rated current of the circuit breaker should be selected according to the power and load conditions of the plant equipment, and should usually be slightly greater than the maximum load current to ensure the normal operation of the equipment and provide overload protection.

1.2 action characteristics

• according to the characteristics of the equipment and the working environment, select the appropriate circuit breaker action characteristics, such as instantaneous, overload, short circuit, etc., to ensure that the circuit breaker can act in time when a fault occurs.

1.3 electrical performance

• the electrical performance of the circuit breaker, including short-circuit withstand capacity, breaking capacity, etc., should meet the requirements of the factory electrical system to ensure the safety and reliability of the circuit.

1.4 model and brand

• choose well-known brands and reliable quality circuit breakers to ensure the quality and stable performance of the equipment and reduce the risk of failure.

2. Selection of power cabinet for factory

2.1 capacity and size

• according to the load situation and equipment requirements of the factory electrical system, select the appropriate power cabinet capacity and size to ensure sufficient capacity and space for the installation of power supply equipment.

2.2 material and protection level

• choose a power cabinet with good protection level and durability to protect electrical equipment from the external environment and ensure the safe and stable operation of the equipment.

2.3 wiring arrangement

• according to the layout of the electrical system and equipment connection requirements, select the appropriate wiring arrangement of the power cabinet to facilitate the connection and maintenance of the equipment.

2.4 power distribution function

• choose power cabinets with complete power distribution functions and protection functions, such as overload protection, short circuit protection, leakage protection, etc., to ensure the safe operation of the electrical system.

3. Factory Circuit Breaker and Cabinet Layout

3.1 reasonable layout

• circuit breakers and power cabinets should be reasonably arranged according to the layout of the factory's electrical system and equipment requirements to facilitate the connection and maintenance of equipment, reduce line length, and reduce energy consumption.

3.2 partition arrangement

• according to the power and load characteristics of electrical equipment, the equipment is partitioned and arranged in different power cabinets to facilitate isolation and control, and improve the flexibility and reliability of the circuit.

3.3 safety signs

• circuit Breakers and Power Cabinets clear safety signs shall be provided, including voltage level, rated current, operating instructions, etc., so that operators can use the equipment correctly and deal with emergencies.