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 Spherical Suspended Ceramic Insulator

XHP - Spherical Umbrella Pollution-Resistant Disc-Type Suspended Porcelain Insulator

XMP - Hat-shaped, anti-soiling, suspended porcelain insulator

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

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

The "C" following the kN value denotes a groove-type connection structure, "T" stands for a ball-joint cap-flange connection structure, and the ball-joint structure is not indicated.

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

U - Suspended Insulator

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

B or C indicates ball socket or groove-type connections.

S or L indicates short or long structural height, M indicates medium-long, and EL indicates extra-long.

P stands for the large climbing distance.

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

1. U70B/146: U—suspended type, 70kN, B—socket type connection, standard type, 146—structural height.

2. U100BP/155D: U—Suspended, 100kN, B—Bushing-type connection, P—Corrosion-resistant, 155—Structure height, D—Double umbrella

3. U160BP/170T: U—Suspended, 160kN, B—Bushing-type connection, P—Corrosion-resistant, 170—Structure height, T—Tri-umbrella

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