Model Description:

GB/T 7253-1987 and JB 9681-1999 standards specification (old model):

XP - Standard Type Disc Shaped Suspended Porcelain Insulator

XWP - Durable Contaminant-Resistant Dish-Type Suspended Ceramic Insulator

XHP - Bell-shaped ceramic insulator with a dirt-resistant disk for pendant suspension

XMP - Hat-shaped dirt-resistant disc-type suspended porcelain insulator

Numbers 1, 2, 3... are the design sequence numbers.

The number following the “—” is the rated mechanical and electrical breakdown load value, in kN.

The "C" following the kN value denotes a groove-type connection structure, "T" represents a socket cap-saddle connection structure, and the ball socket connection structure is not indicated.

GB/T 7253-2005 Standard Specification (New Model):

U - Suspended Insulator

The number following "U" indicates the specified mechanical or mechanical failure load value, in kN.

B or C indicates ball socket or groove connection.

S or L denotes short or long structure height, M represents medium-long, and EL indicates extra-long.

P indicates a large爬距.

 Note: The naming method for insulator codes in the State Grid Corporation's bidding documents is as follows:

1. U70B/146: U—Suspended, 70kN, B—Bushing-type connection, standard type, 146—Structural height.

2. U100BP/155D: U-hanging type, 100kN, B-ball socket connection, P-anti-corrosion type, 155-structure height, D-double umbrella

3. U160BP/170T: U-hanging, 160kN, B-ball joint connection, P-foul proof, 170-structural height, T-tri-umbrella

4. U70C(N)/200: U-hanging, 70kN, C-slot connection, CN-tension-resistant, ground wire insulator.