630kva Pad Mounted Step Down Oil Filled Transformer

To safely step down medium-voltage electricity from underground primary cables to a lower voltage suitable for end-users, Wenzhou XiFa Electric Power Equipment Co., Ltd manufactured 630kva pad mounted step down oil filled transformer. It is highly favored by numerous purchasers due to its excellent performance, safety and long term reliability. Meanwhile, the insulating performance of transformer oil is excellent, and its thermal conductivity is also good. Compared with dry type transformers, 630kva pad mounted step down oil filled transformers are cheaper and have lower costs.

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Product Description

630kva pad mounted step down oil filled transformer supports common international voltage combinations, including primary voltage of 11kV, 22kV, 12470Y/7200V, 13.8kV and secondary output of 400V, 480Y/277V, 208Y/120V, with Dyn11 vector group and±2×2.5% off-circuit tap changer for flexible voltage regulation.

630kva pad mounted step down oil filled transformer can be installed on an outdoor concrete base , featuring fully sealed oil immersed insulation, integrated high voltage switch, protection, low voltage distribution, and is an outdoor maintenance free, compact pre assembled distribution transformer. High quality, low loss silicon steel sheets and high grade copper wires serve as the core conductive and magnetic components. oil filled transformer equips with environmentally friendly mineral insulating oil for excellent dielectric strength and heat dissipation performance. Designed with ONAN natural oil cooling mode, it operates stably with low noise, low no load loss and load loss, meeting international energy efficiency standards.

630kva Pad Mounted Step Down Oil Filled Transformer

Technical specification:

Product name:	630kva pad mounted step down oil filled transformer
Phase number:	3 phase
Frequency:	50/60 Hz
Cooling method:	ONAN
Off circuit tap changer:	±2×2.5%
Connection of winding:	Dyn11 / Yyn0
Impedance:	3.5%~6%
Standard Compliance:	IEC 60076 / GB 1094
Winding Material:	Copper or aluminum
Voltage combination:	High voltage:11KV,13.8KV,22KV,35KV Low voltage:0.4KV
No load loss：	≤ 460 W
load loss：	≤ 4460 W

Advantages:

This 630kva pad mounted step down oil filled transformer has a compact overall structure and is suitable for outdoor base installation. It adopts an environmentally friendly oil immersed design, featuring excellent heat dissipation and insulation performance, with low operating losses and low noise. The equipment meets the standard of protection level, and the box body is corrosion resistant and weather resistant, capable of adapting to various complex outdoor conditions.

Equipped with multiple safety protection components, ensuring stable and reliable operation, oil filled transformer has a tap changing voltage regulation structure, allowing for flexible adaptation to voltage usage requirements. The product has a long service life, is easy to maintain, and is widely applicable in factory areas, commercial and residential buildings, and new energy distribution scenarios.

Q: What are the factory tests for 630kva pad mounted step down oil filled transformers?

A: Before the transformers are delivered from the factory, a comprehensive final acceptance test will be conducted to ensure that the equipment complies with technical standards and customer requirements.

The test items include insulation resistance test, short circuit impedance test, load test and oil quality test, to ensure the stability and safety of the oil filled transformers under various working conditions.

No load current test and no load loss test are used to verify the energy efficiency and performance of the transformer.The temperature rise test ensures that the transformer does not overheat during operation, thereby guaranteeing the service life of the equipment.The partial discharge test is used to check for potential insulation problems in the transformer.

All test results will be recorded in detail and test reports and quality certificates will be provided. After passing the inspection, the 630kva pad mounted step down oil filled transformer will be accompanied by a complete quality inspection certificate and will then be packaged and prepared. This process ensures that each transformer complies with international and industry standards and can be reliably put into use.