Product overview

Circuit breaker porcelain bushings are used as insulating components for circuit breakers (including oil-flled,oil-minimum, air, SF6 circuit breakers, disconnectors, pole- mounted switches, vacuum switches,explosion-proof switches), serving as insulation ftor high-voltage leads passing through the casing or as containers for external and internal insulation of circuit breakers.Model Explanation:(A-DD: Indoor oi-filled circuit breaker porcelain bushing DWD: Outdoor oil-filled circuit breaker porcelain bushing Ds: Indoor oil-minimum circuit breaker porcelain bushing DWS: Outdoor oil-minimum circuil breaker porcelain bushing DWF: Outdoor pole-mounted load switch porcelain bushing  Db: Explosion-proof switch porcelain DG: Indoor disconnector porcelain bushing DWG: Outdoor disconnector porcelain bushing The first 1-3 digits after the dash indicate the rated voltage in kV; the following two digits are the sequence number.*K" denotes armored (cement- mounted), with the digit after "K" being the category number.(B)DWK: Outdoor air circuit breaker porcelain bushing DWT: Electric locomotive air circuit breaker porcelain bushing The first digit after the dash is the series number for air circuit breakers; the second digit is the bushing category number; the 3rd- 4th digits are the sequence number."K" after the digits indicates armored.ZW: Outdoor vacuum switch porcelain bushing The digit after the dash is the rated voltage in kV.LW: Outdoor SF6 circuit breaker porcelain bushing The digit after the letter is the design sequence number; the digit after the dash is the hydraulic load failure value of the bushing in kN.

Outline dimension