VPI dry type transformer

•High-tech VPI (vacuum pressure impregnation) processing for coil, then high temperature curing, highly insulated, dust-proof & moisture-proof

•Better moisture proof / dust proof / lightning shock resistance

•Low noise,Low Loss, Strong short-circuit resistance, low discharge

•Low temperature rise, long life

•Disc winding with Excellent Short-Circuit Strength and Improved Cooling Efficiency

•Core is made of superior steel, outstanding performance of magnetic conduction. Joint is processed by 45° oblique angled technique, with low loss & low noise

Related product parameters

Vacuum pressed impregnation technology.

Integrated HV and LV winding increase mechanical strength and short circuit resistance by vacuum pressed impregnationtechnology.
Adopted Insulation material C-class DupontNomex paper,plus oxygen-copper winding, ensure lower partial discharge , no-load and load loss, and low temperature rise

VPI technology

Main Specification
Transformer Type	VPI (vacuum pressure impregnated)
Rated capacity	Up to 20mva
Rated voltage	Up to 66kV
Frequency	50/ 60HZ
Phase	Three Phase
Winding material	Copper /Aluminum
Insulation class	H, C
Vector group	Dyn11, Dyn5
Protection Enclosure	IP00 to IP56
Standard	IEC, AS, EN, IEEE/ANSI, GOST
Altitdue	Max 4800m
Application	industrial, commercial and catering facilities, solar, public buildings and other indoor applications.

Vacuum pressure impregnated dry type transformer

transformer manufacturers

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 specialized 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