Model Description:

Standards specified by GB/T 7253-1987 and JB 9681-1999 (old models):

XP - Standard Type Disc Shaped Suspended Porcelain Insulator

XWP - Non-stick Disc Shaped Suspendable Porcelain Insulator

XHP - Spherical Insulator with Dish-shaped Anti-fouling Suspension for Umbrella Shelters

XMP - Grass Hat Type Durable Foul-Tolerant Spherical Suspended Ceramic Insulator

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

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

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

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

U - Suspended Insulator

The digit following "U" indicates the specified mechanical or mechanical destruction 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 the large climbing distance.

 Note: The naming method for insulator codes in the State Grid Corporation of China'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, 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.