Overview of Box-Type Transformer
This type of box transformer is specially designed for applications in new energy power generation systems, including photovoltaic (solar) and wind power projects. The internal layout adopts a rectangular arrangement where the transformer room, high-voltage room, and low-voltage room are well structured for optimal safety and efficiency.
The design relocates high-voltage fuses and load switches from the inside of the transformer tank to the high-voltage room, ensuring safer operation and easier maintenance. The transformer uses an external oil storage tank structure, making the oil level visible at a glance and simplifying the processes of oil filling and draining. With an expandable capacity up to 6300kVA, the transformer provides strong adaptability for medium and large-scale power projects.
The fuel tank achieves a protection level of IP68, offering excellent resistance against dust and water, while the high and low voltage rooms meet IP54 protection standards. These features allow the transformer to operate reliably in various harsh environments, making it ideal for renewable energy power plants and urban or rural grid systems.
Environmental Conditions
Altitude: ≤ 4000m
Ambient temperature: -45℃ to +45℃
Pollution level: Class Ⅲ
Relative humidity: daily average ≤ 95%, monthly average ≤ 90%
Note: For operating conditions beyond the above limits, please consult the manufacturer for customized solutions.
Implementation Standards
GB 1094.1-2013: Power transformers – General
GB 1094.2-2013: Power transformers – Temperature rise
GB 1094.3-2003: Power transformers – Insulation levels, insulation tests, and air gaps
GB 1094.5-2008: Power transformers – Ability to withstand short circuits
GB/T 11022-2011: Technical conditions for high-voltage switchgear and controlgear
GB 7251.1-2013: Low-voltage switchgear assemblies – General
GB 50150-2006: Electrical equipment installation engineering – Handover test standard
Primary Single-Line Diagram (Typical Scheme)
A typical primary single-line diagram is available to illustrate the standard connection scheme of this box-type transformer. It shows the integration of the transformer with high-voltage switchgear, protective devices, and low-voltage distribution systems, ensuring safe and efficient power delivery.
Structure And boundary Dimensions
1.Low voltage switchgear 3.Transformer 5.High voltage bushing 7.Cable clamp bracket
2.Insulated busbar frame 4.Oil conservator 6.Vacuum load switch 8.Post insulators
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