Application areas of high voltage switchgear

High-voltage switchgear (rated voltage 3kV and above), as the core power distribution equipment of the power system, is mainly used for the reception, distribution, control, and protection of electrical energy. Its application areas cover all scenarios requiring high-voltage power supply, including industrial production, infrastructure, commercial buildings, and energy systems. The following are specific sub-sectors and application characteristics:

I. Industrial Production Sector (Core Application Scenarios)

1. Heavy Industry/Manufacturing

Application Scenarios: Steel mills, metallurgical plants, chemical plants, cement plants, paper mills, machine shops, etc.

Functional Requirements:

Provide stable high-voltage power supply (mainly 10kV/35kV) for high-power equipment such as large motors, furnaces, compressors, and production lines;

Achieve equipment start-up and shutdown control, overload/short circuit/leakage protection, ensuring uninterrupted continuous production;

Some scenarios require the use of frequency converters and soft starters to achieve energy-saving speed regulation.

Typical Configuration: High-voltage circuit breaker, disconnector, current transformer, voltage transformer, relay protection device.

2. Light Industry / Electronics Manufacturing

Application Scenarios: Electronics factories, home appliance factories, food processing plants, textile factories, etc.

Functional Requirements:

Power production lines, central air conditioning, large refrigeration equipment, etc.;

High power supply reliability is required to avoid product quality issues caused by voltage fluctuations;

Some cleanrooms require dustproof and moisture-proof power distribution cabinets.