Hanging porcelain insulator type

by:Mings     2020-04-23
GB / T 7253 - 9681-1987 and JB 1999 standard ( The old model) : XP— Ordinary disc hanging porcelain insulator; XWP - Fouling resistance disc hanging porcelain insulator; XHP - Bell umbrella fouling resistance disc hanging porcelain insulator; XMP— Straw hat type of fouling resistance disc hanging porcelain insulator; As the design sequence number; “— 'Numbers for mechanical and electrical damage rated load value, kN. KN values at the back of the type C for slot connection structure, T for the ball and socket cap - Flat pin connection structure, the structure of ball and socket connection is not said. GB / T 7253 - 2005 standard ( The new model) : U— Suspension insulator; After U mechanical and electrical or mechanical damage load value of the digital representation, kN. B or C said ball or grooved connection; S or L short or long structure height, M long, EL said long; P says the creepage distance. Note: in the state grid corporation of insulator code named in the tender documents as follows: 1. U70B/146: U— Hanging, 70 kn, B - Ball and socket connection, normal, 146 - Structural height; 2. U100BP / 155 d: U - Hanging, 100 kn, B - Ball and socket connection, P - Anti-pollution, 155 - Structural height, D - The double umbrella; 3. U160BP / 170 t: U - Hanging, 160 kn, B - Ball and socket connection, P - Anti-pollution, 170 - Structural height, T - Three umbrella; 4. U70C ( N) /200: U— Hanging, 70 kn, C - Slotted connection, CN - The shape of the tension and ground wire insulator.
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