Model Description:

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

XP - Standard Type Disc Shaped Suspension Porcelain Insulator

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

XHP - Dish-shaped suspended porcelain insulator with pollution-resistant dome umbrella

XMP - Hat-shaped, Oil-Resistant, Spherical Suspension Ceramic Insulator

Numbers 1, 2, 3... represent the design sequence number.

"—" followed by the number indicates the rated mechanical and electrical breakdown load value, kN.

The "C" following the kN value denotes a slot-type connection structure, the "T" represents a socket-head cap-screw connection, and the socket connection 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 destruction load value, in kN.

B or C indicates ball joint or slot-type connection.

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

P indicates the large爬距.

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

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

2. U100BP/155D: U—suspended, 100kN, B—socket joint, P—anti-corrosive, 155—structural height, D—double canopy

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

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