Technical Documentation-Hebei Zhongbei Transformer Co., Ltd

Dry type vs oil immersed transformer: which one to choose?

Dry-type and oil-immersed transformers are two mainstream distribution transformer solutions with distinct structural features,safety performance,costs and applicable scenarios,which decide customers’final selection bas...

What insulation class is used for epoxy dry transformer?

Standard epoxy cast resin dry-type transformers mainly adopt Class F(155°C)as mainstream insulation grade,and Class H(180°C)for upgraded high-temperature resistant models,specified under IEC 60076-11 international stand...

What is AN and AF cooling for dry type transformer?

AN and AF are two standard cooling modes specified in IEC 60076-11 for dry-type transformers, controlling heat dissipation generated by core iron loss and winding copper loss. AN (Air Natural Cooling) relies entirely on n...

What is the difference between VPI and cast resin dry transformer?

VPI and cast resin are two dominant technical routes of dry-type transformers,differentiated greatly in manufacturing craft,coil structure,performance,cost and applicable working conditions. Cast resin dry transformer ado...

What is cast resin dry type transformer?

Cast resin dry type transformer is the most mainstream branch of dry-type power transformers, whose high and low voltage windings are fully sealed and encapsulated by epoxy resin under vacuum casting technology. Differing...

What is a dry-type transformer and how does it work?

A dry-type transformer is an oil-free static power transformation device whose iron core and winding coils adopt solid insulation+air as coolingdielectric medium instead of mineral insulating oil used in conventional oil-...