} Special power transformers-Varelen Electric

Varelen Electric

sales@varelen.com +86 19373185639

English 中文 Русский

Power Transformer

•Varelen design power transformer can customized voltage up to 132KV
•High short circuit withstand capability
•Low loss and saving cost
•Customized transformers are available
•Compact dimensions and weight
•Long lifespan
•Oil immersed power transformer use ester oil is that it is not flammable, superior fire safety
•7-step stepping lap iron core structure , Iron Cores are made of cold rolled grain oriented silicon steel, with low loss
•High-Temperature and Low Temperature Resistant Insulation System

110KV power transformers are used in power plants, substations and large industrial and mining enterprises. They feature low loss, low temperature rise, low noise, low partial discharge and strong short-circuit resistance.

This has thus saved a significant amount of power loss and operating costs. The high-voltage coil adopts a twisted type or an inner screen continuous type, and a reinforcing section is set at the beginning to improve the impulse voltage distribution and ensure the insulation strength of the high-voltage coil under various overvoltages.

The oil storage tank adopts capsule seal or metal corrugated expansion type fully sealed structure, which completely isolates the oil running inside the transformer from the outside air. This effectively prevents the entry of oxygen and moisture, which could lead to a decline in insulation performance

Main Specification
Transformer Type	Oil immersed
Rated capacity	30KVA to 40MVA
Rated voltage	up to 132kV
Frequency	50/60Hz
Phase	single phase or three phase
Winding material	Copper /Aluminum
Insulation class	A (105℃），E (120℃), B (130℃)
Vector group	Dyn11 YNd1d1，etc.
Cooling	ONAN, KNAN ，ONAF，KNAF
Dieletric liquid	Mineral oil, Silicone, FR3 Oil, Midel etc.
Tap changer	Off-load or on-load
Abmient temperature	-45℃ ~+50℃
Standard	IEC, AS, EN, IEEE, ANSI, GOST
Accessories	Conservator, Pressure Relief Device Tap changer, Oil temperature Indicator Bucholz relay, Lifting lugs

10MVA 66KV Transformer

10MVA 66KV Transformer

500kva 66KV Transformers

500KVA 66KV oil immersed transformer with conservator

•All transformers can be designed, customized, and supplied with a wide variety of accessories, as required.
- - Varelen Custom Products include:
  - •K-Factor Rated
  - •Harmonic Mitigation
  - •Custom Dimensions for Size & weight constraints
  - •Custom enclosures for tough environmental conditions
  - •Unique input and output voltages
  - •Low inrush Current
  - •6, 12 and 18, 24 and 36 pulse drive isolation transformers
  - •Rectifier Duty
    - - •High Efficiency
      - •Low Audible Noise
      - •Low Temperature Rise
      - •Marine Duty
      - •Hazardous Location

For each transformer are prepared and issued a test report, in accordance with IEC 60076. except for routine tests, we also offer type tests and specialised tests to meet all customer requirements. We make what matters work for our customers in a safe and reliable way.

Routine test

Measurement of winding resistance
Measurement of voltage ratio and check of phase displacement
Measurement of short-circuit impedance and load loss
Measurement of no-load loss and current
Separate-source AC withstand voltage test
Induced AC withstand voltage test
Partial discharge measurement

Type test

Lightning impulse test
Temperature-rise test
Determination of sound level for each method of cooling for which a guaranteed sound level is specified
Measurement of the power taken by the fan and liquid pump motors
Measurement of no-load loss and current at 90% and 110% of rated voltage

Special test

Partial discharge measurement
Measurement of sound level
Short-circuit withstand test
Determination of capacitances windings-to-earth, and between windings
Vacuum deflection test on liquid immersed transformers
Pressure deflection test on liquid immersed transformers

Recommend related products

7500kVA Transformer

Characteristics

• Strong resistance to sudden short circuits
• Superior behaviour on load changes
• Surface protection hot dipgalvanized

•Prevent oil leakage technology

Green Hydrogen Transformer

Characteristics

•High Temperature Resistance
•No leakage
•High overload capability
•Efficient transforme with reduce losses
•Harmonics consideration

Areas of application

Transform for Green Hydrogen

Wind Power Distribution

Power Transmission&Distribution

Substation Power Supply

Electrical engineer

Brochure downloads

Distribution transformer catalog

Download

Oil immersed transformer Brochure

Download

Place your request

Do you need a quote for any of our products or solutions? Do you have a technical question? You can contact us 24/7.

Frequently Asked Questions

1.Whats the insulation class of oil immersed transformer?: Insulation class: A（105℃）， E (120℃）, B（130℃）

2. What types of insulating oil are used?: Fluid options available，Mineral Oil , Natural Ester Fluid (FR3 fluid), Silicone , Midel etc.

3. Are you offer OEM transformer services?: Yes, our factory can provide professional OEM services. Whether you have a unique design concept or specific performance requirements, our team is ready to work with you. We can manufacture transformers according to your specifications, including customizing design, performance parameters, and packaging.

Contact information

Emailsales@varelen.com Tel+86 19373185639 Fax+86 731 84371029 Phone/WeChat+86 19373185639

Quick links

Product Project Solution About Varelen Videos News Contact Us