Скачать или смотреть Complete Sets of Electrical Equipment for Chemical Plants

I. Overview of Complete Sets of Electrical Equipment for Chemical Plants
Due to the特殊性 of the production environment and the complexity of the production process in chemical plants, there are strict requirements for electrical equipment. Complete sets of electrical equipment refer to the combination of various electrical components to form a complete electrical system to meet specific electrical function requirements. These equipment play a crucial role in multiple aspects of chemical plants, such as power supply, production process control, and safety protection.
II. Main Complete Sets of Electrical Equipment
(I) Switchgear
1. *High-voltage Switchgear*
**Function and Structure**: It is mainly used to control and protect high-voltage electrical equipment, such as high-voltage motors and transformers. It usually includes components such as circuit breakers, isolating switches, instrument transformers, and lightning arresters. The cabinet structure generally adopts metal-enclosed armored or compartmentalized types, with a relatively high protection level, which can effectively prevent electric shock to personnel and the intrusion of foreign objects. For example, in the KYN28 - 12 high-voltage switchgear, the circuit breaker is installed on a withdrawable handcart, which is convenient for maintenance and repair.
**Application Scenarios**: In the main step-down substations of chemical plants, the incoming power of 10kV or 35kV is distributed to the transformers or high-voltage motors in each workshop. The circuit breakers of the high-voltage switchgear are used for on-off control and short-circuit and overload protection.
2. *Low-voltage Switchgear*
**Function and Structure**: It is used for power distribution and control of low-voltage (usually 380V/220V) electrical equipment. It contains components such as circuit breakers, contactors, thermal relays, and fuses inside. The cabinet body has various forms, such as drawer type and fixed compartment type. For the drawer-type low-voltage switchgear, such as the GCS type, each drawer is an independent functional unit. When a fault occurs in the branch circuit connected to a certain drawer, the drawer can be easily withdrawn for maintenance without affecting the normal operation of other branches.
**Application Scenarios**: In chemical workshops, it provides power distribution and control functions for various low-voltage electrical equipment, such as pumps, agitators, and lighting equipment.

(II) Distribution Boxes
1. *Power Distribution Boxes*
**Function and Structure**: It mainly provides power for power equipment. It is equipped with components such as circuit breakers and contactors inside, which are used to control the start, stop, and protection of power equipment such as motors. Its shell is generally made of steel plates, which has a certain degree of protection ability.
**Application Scenarios**: In the chemical production site, it is used to control single or multiple small power equipment, such as small chemical pumps and ventilators.
2. *Lighting Distribution Boxes*
**Function and Structure**: It is used to control and distribute the power of lighting circuits. It is equipped with components such as miniature circuit breakers and residual current circuit breakers to ensure the safety and reliability of the lighting system. Its box structure is relatively simple and is convenient to be installed on the walls of buildings and other locations.
**Application Scenarios**: It provides lighting control functions for the workshops, warehouses, office areas, etc. of chemical plants. At the same time, it can prevent electric shock accidents caused by lighting circuit failures.

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