Overview

This packaged unit substation is specially designed for new energy power generation systems such as photovoltaic and wind power projects. The transformer room, high-voltage room, and low-voltage room are arranged in a rectangular structure, providing a compact layout while improving accessibility for operation and maintenance.

In this design, high-voltage fuses and load switches are separated from the transformer tank and installed inside the high-voltage compartment. This arrangement improves operational safety and simplifies maintenance. The transformer adopts an external oil storage tank structure, allowing clear visibility of the oil level and making oil filling and draining more convenient.

The capacity range of the packaged unit substation can be expanded up to 6300kVA. The external transformer configuration significantly improves heat dissipation performance and facilitates easier inspection and servicing. The oil tank protection level reaches IP68, while the high-voltage and low-voltage compartments achieve IP54 protection, ensuring reliable operation in harsh environmental conditions such as deserts, coastal regions, and offshore wind farms.

Environmental Conditions

Altitude not exceeding 4000 meters above sea level.

Ambient temperature range from -45°C to +45°C.

Pollution level Class III suitable for industrial and outdoor environments.

Relative humidity with daily average not exceeding 95 percent and monthly average not exceeding 90 percent.

For operating conditions beyond the specified range, technical requirements should be confirmed with the manufacturer before ordering.

Implementation Standards

GB 1094.1-2013 Power Transformers Part 1 General

GB 1094.2-2013 Power Transformers Part 2 Temperature Rise

GB 1094.3-2003 Power Transformers Part 3 Insulation Levels, Insulation Tests and External Air Gaps

GB 1094.5-2008 Power Transformers Part 5 Ability to Withstand Short Circuits

GB/T 11022-2011 Common Technical Conditions for High-Voltage Switchgear and Controlgear

GB 7251.1-2013 Low-Voltage Switchgear and Controlgear Assemblies Part 1 General

GB 50150-2006 Electrical Equipment Installation Engineering Electrical Equipment Handover Test Standard

Key Advantages

Rectangular structural layout provides efficient space utilization and convenient equipment arrangement for renewable energy projects.

High-voltage fuse and load switch installed in the high-voltage room enhance operational safety and simplify maintenance procedures.

External oil storage tank design allows clear oil level monitoring and easier oil filling and drainage.

Extended capacity range up to 6300kVA meets the requirements of medium and large photovoltaic and wind power stations.

IP68 protection level for transformer tank ensures reliable operation under flooding, dust, and extreme weather conditions.

High-voltage and low-voltage compartments with IP54 protection provide excellent resistance against dust and moisture.

Applications

This packaged unit substation is widely used in photovoltaic power plants, wind farms, distributed solar generation systems, offshore renewable energy projects, desert solar stations, and industrial new energy integration systems. Its robust enclosure and external transformer design make it particularly suitable for harsh outdoor environments.