Focus on production and sales of all range MV/HV Epoxy Resin Parts
D330, HONGZHUAN JOINT OFFICE, NO.12 HONGZHUAN SOUTH ROAD, XI AN ,CHINA
Encapsulated pole unit (EPU)
The IEC vacuum circuit breakers use vacuum interrupters that are embedded in epoxy resin. This assembly is referred to as an encapsulated pole unit (EPU).
Durable
Encapsulating the vacuum interrupter in epoxy resin results in circuit breaker pole units that are extremely durable. Further, it protects the vacuum interrupter from mechanical impact and climatic conditions such as moisture, humidity and dust. The material is vibration and shock proof and its durability is long lasting.
High performance
Originally developed for outdoor use, the robust epoxy resin insulating material offer;
l Optimum thermal conductivity
l High electrical resistivity
l Low moisture absorption
l High creepage current resistance
l High mechanical strength
l Complete homogeneity
Eaton encapsulated pole units are designed in such a way that no partial discharging occurs on the surface.
Compact
Due to its mechanical strength, epoxy resin lends itself to a very compact design, whn combined with Eaton’s world leading vacuum interrupter technology, high current and interruption ratings are achieved in s small package, generating cost savings for users.
Vacuum interrupter is embedded pole design and uses Eaton vacuum interrupters. The vacuum interrupter and conductive parts of the primary circuit are cast as a whole by epoxy resin making the unit maintenance free over the entire service life of the product