Model Description:

GB/T 7253-1987 and JB 9681-1999 standards specifications (old models):

XP - Standard Type Disc Shaped Suspended Porcelain Insulator

XWP - Non-stick Disc Shaped Suspended Ceramic Insulator

XHP - Insulator with Spherical Cap and Drip Ring, for Pollution-Resistant Overhead Ceramic Suspension

XMP - Grass Hat Type Non-Stick Disc-shaped Suspended Ceramic Insulator

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

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

The "C" following the kN value indicates a slot-type connection structure, while "T" denotes a socket-cap-slab-foot connection structure. The spherical 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 destruction load value, in kN.

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

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

P stands for the large爬距.

 Note: The naming method for insulator codes 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—Bushing-type connection, P—Corrosion-resistant, 155—Structure height, D—Double canopy

3. U160BP/170T: U-hanging type, 160kN, B-ball joint, P-foulproof type, 170-structure height, T-tri-umbrella

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