FIELD: electricity.
SUBSTANCE: invention is related to method for superposition of electric insulating shell over varistor unit for overvoltage protection discharger. Method for superposition of electric insulating shell over varistor unit, and also varistor unit for discharger of overvoltage protection. Varistor unit (1) is made of multiple varistor elements (2a, 2b, 2c, 2d). Around varistor elements (2a, 2b, 2c, 2d) there is electric insulating shell (5a) arranged. Electric insulating shell (5a) directly lies on surface of varistor unit (1). Prior to or in process of electric insulating shell (5a) superposition over varistor unit (1), undesirable gas molecules are removed from the area of connection between surface of varistor unit (1) and shell (5a). Application of shell is carried out in evacuated space. Shell is shaped under action of thermal energy. Shell is at least partially shaped with hose from shrunk material.
EFFECT: improved mechanical stability and security against outside mechanical forces.
9 cl, 3 dwg
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