Box Substation Operation and Maintenance Guide for Outdoor Power Stations

Introduction

Recently, many customers have consulted us about the daily operation and maintenance standards of box substations. As outdoor core power distribution equipment, box substations require standardized placement, grounding, ventilation and regular inspection to ensure long-term stable operation. Today, we sort out the most practical maintenance guidelines for your daily project management.

1. Standard Foundation and Site Placement Requirements

The box substation must be installed on a high terrain. It cannot be placed in low-lying areas to avoid rainwater accumulation and water inflow, which may cause equipment failure.

During concrete platform construction, reserved gaps must be designed. These gaps facilitate the laying and entry of incoming and outgoing cables, ensuring neat wiring and later maintenance convenience.

2. Reliable Grounding Connection Specifications

The box body must form multiple reliable connections with the grounding grid. The equipment grounding and zero grounding can share one integrated grounding system.

In general, grounding piles are installed at the four corners of the foundation. All grounding points are connected as a whole to ensure safe and stable grounding performance during long-term operation.

3. On-Site Environment and Ventilation Management

No random stacking of sundries is allowed around the box substation. A clean surrounding environment ensures normal ventilation and daily patrol inspection.

Most compact box substations adopt air circulation cooling. Therefore, the transformer air inlet and outlet doors must never be blocked, to prevent overheating and temperature alarm faults.

4. Regular Inspection and Operational Safety Rules

High-voltage components including dual-circuit switches, transformers and high-voltage arresters need regular patrol maintenance. Staff should repair defects in a timely manner and conduct periodic insulation protection tests.

During switching operation, workers must correctly release mechanical interlocks and use insulating operating rods to ensure personal safety and standardized operation.

Conclusion

Standard installation location, complete grounding system, smooth ventilation environment and regular electrical testing are the four key points for box substation daily maintenance. Following these rules can greatly reduce failure rate and extend the service life of outdoor power distribution equipment.

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