Classification Logic of Power Equipment
Power system equipment is functionally divided into three levels: Primary equipment directly participates in power transmission (such as transformers and cables), secondary equipment is responsible for monitoring and control (such as relays), and tertiary equipment is the management terminal. Low-voltage switchgear assemblies are typical primary equipment, acting as the "traffic police" of the power system, directly responsible for power distribution and switching.
Special Positioning of Low-Voltage Equipment
Although named "low-voltage," it plays a crucial role in voltage levels of 380V and below:
Distribution Core: Connects transformers and terminal electrical equipment
Safety Guardian: Equipped with overload and short-circuit protection functions
Flexible Expansion: Modular design allows for additions and subtractions according to power demand
Practical Recommendations for Selection and Use
When selecting low-voltage switchgear assemblies, consider the following:
Environmental Matching: Waterproof housing is required for humid environments
Capacity Reserve: It is recommended that the load rate not exceed 80%
Maintenance Convenience: Drawer-type functional units are preferred
Upgrade Potential: Retaining 20% spare circuits is more reasonable