Custom 3150kVA 10kV 0.4kV Prefabricated Box Type Transformer Substation for Sale for State Grid

Overview

Our 3150kVA 10kV/0.4kV Box-Type Transformer Substation (also known as a compact prefabricated substation or package substation) is a high-capacity, fully integrated power distribution solution engineered for medium-to-large-scale commercial, industrial, and utility applications. This unit seamlessly combines a high-voltage switchgear, a 3150kVA oil-immersed or dry-type power transformer, and low-voltage distribution equipment within a robust, weatherproof enclosure, offering a turnkey solution for efficient and reliable electrical energy conversion and distribution.

Designed for a primary voltage of 10kV and a secondary voltage of 0.4kV, this substation delivers substantial power output while maintaining superior operational safety and stability. The unit features a compact, modular design that significantly reduces land occupation and civil construction costs compared to traditional stick-built substations. Its prefabricated structure allows for rapid on-site installation, factory pre-commissioning, and seamless integration into existing or new power networks.

Key Features & Benefits:

• High Capacity & Reliability: Rated at 3150kVA, this substation is ideal for heavy-load environments such as data centers, manufacturing plants, high-rise buildings, and large residential complexes. The transformer is manufactured with high-quality cold-rolled grain-oriented silicon steel and high-conductivity copper windings, ensuring low no-load losses, high short-circuit withstand capability, and long operational life.
• Compact & Weatherproof Enclosure: The substation is housed in a durable, corrosion-resistant steel enclosure with an IP54 protection rating (optionally higher), providing excellent protection against dust, moisture, and harsh environmental conditions. The enclosure is designed with forced-air ventilation and thermostat-controlled cooling fans to ensure optimal operating temperatures.
• Intelligent Monitoring & Safety: Equipped with advanced protection relays, temperature monitoring systems, and interlocking devices, the substation ensures comprehensive fault protection, including overcurrent, short-circuit, and over-temperature alarms. Optional smart grid communication interfaces (RS485, Modbus) enable remote monitoring and real-time data acquisition.
• Flexible Configuration: The unit supports various HV/LV connection schemes (such as ring main unit, side-by-side, or double-busbar configurations) and can be customized with different auxiliary transformers, UPS systems, and metering compartments to meet specific project requirements.

All components strictly comply with international standards (IEC, ANSI, GB), ensuring global compatibility and operational safety. This box-type substation represents the perfect balance of performance, durability, and cost-effectiveness, making it the preferred choice for critical power infrastructure projects.