Model Description:

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

XP - Standard Type Disc Shaped Suspended Porcelain Insulator

XWP - Oil-Immersed Disc Shaped Suspension Porcelain Insulator

XHP -污染耐久盘形悬挂式瓷绝缘子

XMP - Grass Hat Type Foul-Resistant Disc Shaped Suspended Porcelain Insulator

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

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

The "C" following the kN value denotes a groove-type connection structure, the "T" stands for a socket cap-saddle connection structure, and the ball socket connection 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 joint or slot connection.

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

P indicates the large climbing distance.

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

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

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

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 type, 70kN, C-slot connection, CN-tension type, ground wire insulator.