porcelain ANSI C29.7 standard line post insulator 57-3 for
distribution lines
Description:
ANSI C29.7 standard porcelain line post insulator 57-3 character :
Product technical specifications :
| | Technical Specification | Unit | Value |
| 1 | Total length | mm | 368 |
| 2 | Max. Shed Diameter | mm | 165 |
| 3 | Creepage Distance | mm | 737 |
| 4 | Cantilever Strength | KN | 12.5 |
| 5 | Power frequency flashover Voltage | | |
| | dry | KV | 125 |
| | wet | KV | 100 |
| 6 | Critical Impulse flashover Voltage + | KV | 210 |
| 7 | Radio interference voltage test voltage | KV | 30 |
| Max. RIV at 1 MHz | μV | 200 |
HIVOLT line post insulators 57-3 are suitable for vertical
assembled on a wooden or steel crossarm . such type of products are
very popular in American market .
The line post insulator 57-3 are one solid piece porcelain . they
are free from radio interference without any further treatment. the
insulator sheds enable them to withstand attacks from stones ,
bullets etc.
they are especially useful for service on industrial feeders where
maximum reliability is most valuable in providing optimum service
continuity.
on the tie top wire groove is provided with a head and neck
designed to enable contain most of ANSI standard conductors .
A short bolt or long bolt available for insulator assembly .
Applications:
The ANSI 57-3 line post insulators are suitable for 35kV
distribution lines.
it is easy installed vertically on metal or wooden crossarms. tie
top procelain can hold conductor firmly and suitable for different
size of wires.
Competitive Advantage:
we choose aluminum porcelain C-130 as raw material for insulator
porcelain .
the insulator have very light net weight yet high mechanical
strength .
it can save transportation cost , and easy for assembly in
distribution lines.
the insulator have excellent self-clean character , much easier
for maintenance.
we offer 3 years quality guarantee .
OEM product are available .
