Large Power Transformer

Henan GNEE Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of large power transformer in China. If you're going to buy customized large power transformer made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.

A Large Power Transformer (LPT) is a critical component of the bulk electric power generation and transmission grid, as well as various industrial applications. Because LPTs are very expensive and tailored to customer specifications, they are usually neither interchangeable nor produced in large inventories. In the event of a transformer failure, repair or replacement can take between 12 to 24 months, posing significant business interruption risks to the operator.

The transformer products we at GNEE mainly sell include dry-type transformers, oil-immersed transformers, distribution transformers, power transformers, pole-mounted transformers, pad-mounted transformers, amorphous alloy transformers, and transformer substations.

Regular maintenance and testing are vital to ensure reliable operation and a normal life span of a transformer.

● Oil analysis, including regular oil screening as well as water content and gas-in-oil analysis should be completed at least annually. Furan analysis is also desirable to monitor ageing transformers. Testing should be performed more frequently if the unit's operating history, condition, and criticality warrant it.

● Testing for corrosive Sulphur should be conducted in transformers built after the year 2000 or those that have recently had their oil processed or replaced, and the replacement oil has not been tested for corrosive Sulphur. Transformers that meet the following conditions should have corrosive Sulphur testing performed. These conditions put a transformer at the highest risk of failure due to corrosive Sulphur contamination.

● The transformer fluid is a mineral oil

● Mineral oil is an uninhibited type

● The oil preservation system is sealed (not free breathing)

● The transformer has a high sustained load factor

● The transformer is operating in a hot climate

● The transformer windings are bare copper

● Every 5 years, perform the following electrical tests:

● Relay testing and calibration.

● Insulation resistance testing – measures the winding to winding and winding to ground insulation resistance.

● Power factor testing – measures the power factor and capacitance of the transformer and high voltage capacitive bushings.

● Buchholz testing. The Buchholz relay can be defined as a device which is utilised to protect against certain dangers in electrical transformers of ratings over 500kVA.

GNEE have 16 years of experience in international power projects and have helped many customers around the world complete power projects. For example, Canada, Mexico, Panama, Ecuador, Guatemala, Honduras, Chile, El Salvador, Australia, New Zealand, Spain, Belgium, Algeria, South Africa, Ethiopia, Pakistan, Kazakhstan, etc. GNEE also have very good after-sales installation service team abroad, so if you have transformer needs, you can contact us.

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