VPI dry type transformer

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

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

•Class C insulation (heat resistance 220℃), multi-layer coil structure, self-cleaning airways, rubber sealed ends, improved dust, moisture and salt spray resistance

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

•VPI transformers provide excellent mechanical ，no danger of fire or explosion, and no liquids to leak.

Related product parameters

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 (180℃), C (220℃)
Vector group	Dyn11, Dyn5
Cooling	AN / ANAN / ANAF / AFWF
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 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 C class insulation NOmex paper