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

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

custom 15MVA power transformer

110KV oil immersed power transformer

Routine test

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

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

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Power Transformers