Pin Porcelain Insulator

The pin insulator is a type of distribution line insulator, which is mounted to an electrical cross arm of the utility pole with the support of various bolts or pole top pins.

Overview

The pin insulator is a type of distribution line insulator, which is mounted to an electrical cross arm of the utility pole with the support of various bolts or pole top pins.
Pin porcelain insulator is widely used in the power distribution systems with the features of low price, high mechanical strength, simple design, and easy maintenance.
Pin type insulators are assembled on the top of the electrical poles or towers. The conductor was fixed to the grooves on the upper end of the insulators, with the help of the top tie.
Pin type insulator can be made of ceramic, porcelain, polymer, glass, or silicon rubber.
For lower voltages one-piece type of insulators are enough, For the application of higher voltage, stronger pin type insulators such as two pieces or three pieces types are needed.
Due to its design, It is generally used for the voltage 11kv up to 35kv, pin Insulators beyond a voltage of 35 kV will be bulky and expensive.

p type pin insulator.jpg

Parameter

Item No.

Rated voltage(KV)

Creepage distance
(mmn)

Standard lightning impulse withstand voltage(Kv)

Power frequency voltage(KV)

Bending failure load(KN)

Bending failure load(KN)

reference weight
(kg)

Remark

Wet tolerance

breakdown

P-10T

10

195

75

28

95

1.4

11

2.1

Normal 

type

P-15T

15

280

90

40

98


11

3.4

PQ1-
10T

10

255

90

40

130

2

11

2.35

Stain-resistant type

PQ-15T

15

295

110

50

135

2

11

3

P-20T

20

370

132

50

140

2

13

7

PQ-20T

20

370

132

50

140

2

13

6.5

PQ2-
10T

22

450

132

50

145

2

13

6.7


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