Transformer winding

•cast resin windings have high mechanical strength and no partial discharge
•thansformer coils are manufactured with aluminium or copper conductors
•Designed with HV/LV foil winding and round wire winding
•our team cast resin winding technology, resin guarantees the best dielectric performance, short-circuit resistance, and long-term reliability, customized up to 25mva transformer winding
•make dry type windings a cost-effective choice for customers looking to optimize their transformer investments, especially for applications where maintenance and safety are critical concerns.
•transformer winding are not subjected to wetting and polluting
•Operation safety, transformer winding are not flammable and can not be a source of fire

Related product parameters

Main Specification
Transformer Type	cast resin
Rated capacity	up to 25mva
Rated voltage	up to 36kv
Frequency	50/60Hz
Phase	3 Phase
Winding material	Copper /Aluminum
Insulation class	F, H, C
Vector group	Dyn11, Yyn0,
Climate	C5
Environmental	E4
Fire behaviour	F1
Temperature operation	+50~ -60℃
Short circuit resistance	4-8%( on request)
Standard	IEC, AS, EN, IEEE, GOST

High Voltage Coil

This is vacuum-cast with epoxy resin with excellent mechanical and electrical performances using conductors， with excellent conductivity to be outstanding in short circuit strength and insulation performance.

Low voltage foil coil

The standard low-voltage winding twine by copper foil (or aluminum foil) with interleaved DMD which bear less， dielectric stress. The assembled coils are then oven-cured to form uniformly bonded solid cylinders that are antimoisture. Such winding has excellent dynamic stability under shortcircuit condition.

dry type transformer coils

FACTORY TEST

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

Special test

Partial discharge measurement
Measurement of sound level
Short-circuit test

Contact information

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

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Dry Type Transformers