Insulator Pins of Large Steel Head for 33 kV
P- Stands for 5 KN Minimum Failing Load
S- Stands for Small Steel Head
N- Stands for 10 KN Minimum Failing Load
L- Stands for Large Steel Head
|
Minimum Failing Load (KN) |
Ref. as per IS:2486, part-2 |
A |
B |
C |
D |
E |
F |
G |
X* |
Cat No. |
|
5 |
L165P |
165 |
40 |
24 |
25 |
20 |
5 |
12 |
50 |
UL165P |
|
L230P |
230 |
40 |
24 |
29 |
24 |
6 |
12 |
OR |
UL230P |
|
L300P |
300 |
50 |
24 |
35 |
24 |
6 |
12 |
150 |
UL300P |
|
10 |
L165N |
165 |
45 |
24 |
32 |
20 |
6 |
12 |
50 |
UL165N |
|
L230N |
300 |
50 |
24 |
38 |
24 |
6 |
12 |
OR |
UL230N |
|
L300N |
300 |
67 |
27 |
44 |
24 |
6 |
12 |
150 |
UL300N |
|
* Dimensions X to be 150 (screwed 100) or 50
(screwed 45) |
Note :
-
The requirements relating to shape and
dimensions of fittings shall be complied with
the requirements of IS:2486 (part 1 & 2)
-
The heads shall be of steel & shall be in
accordance with requirements of IS:2486 (Part 2,
Fig. 1). They shall be screwed into a thimble or
equivalent component fixed in the pin hole of
the insulator.
-
The lower portion is called shank of the
Insulator Pin and from collar to top where the
insulator is to be mounted is called stalk. Pins
are secured with spring washers and nuts on
steel cross arms.
-
Pilot insulator pins are used with pilot
insulators. The size of head depends on the
insulator thread.
