Electrical equipment installation engineering composition

1. Electrical lighting system

An electrical device that converts electrical energy into light energy constitutes a lighting project. It includes industrial and mining enterprises production lighting and civil building lighting.

Lighting system can be divided into general lighting system, local lighting system and mixed lighting system.

The scope of the electrical lighting system generally includes: power intake - control equipment (distribution box) - distribution line - lighting (device).

2. Lightning protection and grounding system

(1) Lightning protection device

Lightning protection device is a protection device to protect buildings, structures and equipment from lightning damage, which is usually composed of three parts: lightning connector (lightning rod, lightning protection net) or lightning arrester, connection line (lead down), grounding device.

(2) Grounding device

The grounding device consists of a grounding body and a grounding wire (ground bus).

Grounding of electrical equipment is usually divided into working grounding, protective grounding, protective zero grounding, repeated grounding and lightning protection grounding according to its function.

3. Power system

The power system is the electrical energy acting on the motor to drag a variety of working equipment or electrical energy as energy for production of electrical devices, such as high, low voltage or AC, DC motors, lifting electrical devices, automatic driving devices, etc.

Power engineering usually takes a workshop or a factory building as a unit project, and its scope is: power introduction - various control equipment - distribution lines (including secondary lines) - electrical or electrical equipment wiring - grounding, debugging, etc.

4. Power distribution system

Power conversion and distribution system is a general term for electrical devices used to transform and distribute electrical energy, which is composed of two parts: power conversion equipment and power distribution equipment.

When the power transformation and distribution system is a unit project, its scope is generally from the power grid access power point to the entire project content of the output point of the distribution of electric energy, but also includes the lighting, grounding, lightning protection devices in the system.