Model Description:

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

XP - Standard Type Disc Shaped Suspended Porcelain Insulator

XWP - Non-stick Dish-shaped Suspended Porcelain Insulator

XHP -污染耐久盘形悬挂式瓷绝缘子

XMP - Hat-shaped, Non-stick, Disc-type 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, kN.

The "C" following the kN value indicates a槽型连接结构, the "T" denotes a socket-head cap-screw connection, and the ball joint structure is not indicated.

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

U - Suspended Insulator

The U followed by a number indicates the specified mechanical or mechanical destruction load value, in kN.

B or C indicates ball joint or slot connection.

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

P stands for 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, 70kN, B—Bushing type connection, Standard type, 146—Structure height

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

3. U160BP/170T: U-hanging, 160kN, B-ball joint, P-foul proof, 170-structural height, T-tri-umbrella

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