Type AD-HVT - Flat Composite Discs for Protection of High Voltage Transformers

Description

The Fike AD-HVT series bursting discs are low-pressure  relief devices. They have been specifically designed for  overpressure protection of vessels operating near to  atmospheric conditions. The flat composite discs consist  of several components that form a single unit. The  design principle used to ensure a predictable bursting  pressure is a tension failure of a mechanically  weakened top section. The fluoropolymer / Aluminium  seal member transmits the pressure load on to the top  section, which controls the burst pressure. The seal  member being fluoropolymer, offers excellent corrosion  resistance and performance characteristics. Asbestosfree  gaskets are bonded to both process and  atmospheric sides of the disc and as the disc is flat it  can be mounted between standard ANSI 150 and DIN  PN10 raised-face flanges without a disc holder. (Other  flange ratings are available on request.)

Features and Benefits

• Same burst pressure in both directions, offering a fail-safe burst behaviour
• Fast, unrestricted opening in case of internal overpressure
• Geometry, size and opening pressure adaptable to individual applications

Applications
The Fike AD-HVT series bursting discs has been developed to protect high voltage transformer against overpressure damage in case of an internal electric accident. They will allow for safe pressure relief without hazards of transformer envelope parts becoming fragments.