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 Dish-shaped Suspended Porcelain Insulator

XHP -污染耐久盘形悬挂式瓷绝缘子

XMP - Hat-shaped, dirt-resistant, disc-shaped suspended porcelain insulator

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

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

The "C" following the kN value denotes a slot-type connection structure, the "T" indicates a socket-cap flat-foot connection structure, while the socket connection structure is not indicated.

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

U-Hanging Insulator

The number following the "U" indicates the specified mechanical or mechanical failure load value, in kN.

B or C indicates ball socket or slot connection.

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

P indicates the large climbing distance.

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-hanging type, 100kN, B-ball socket joint, P-fouling resistant, 155-structural height, D-double canopy

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

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