ANSI C29.7 Light Gray Porcelain Post Insulators / Oem Line Post Insulators
| ANSI CLASS |
Creepage distance (mm) |
Dry arcing distance (mm) |
cantilever strength (kN) |
Lower frequency flashover voltage |
Critical impulse flashover voltage |
Test voltage to ground (kV) |
| Dry(kV) |
Wet(kV) |
Positive(kV) |
| 57-1 |
356 |
165 |
12.5 |
70 |
50 |
120 |
15 |
| |
|
|
|
|
|
|
|
| ANSI CLASS |
Creepage distance (mm) |
Dry arcing distance (mm) |
cantilever strength (kN) |
Lower frequency flashover voltage(kV) |
Critical impulse flashover voltage |
Test voltage to ground (kV) |
| Dry |
Wet |
Positive(kV) |
| 57-6 |
1364 |
489 |
12.5 |
180 |
150 |
300 |
44 |
| |
|
|
|
|
|
|
|
| ANSI CLASS |
Creepage distance (mm) |
Dry arcing distance (mm) |
cantilever strength (kN) |
Lower frequency flashover voltage |
Critical impulse flashover voltage |
Test voltage to ground (kV) |
| Dry(kV) |
Wet(kV) |
Positive(kV) |
| 57-5 |
1145 |
438 |
12.5 |
160 |
130 |
265 |
44 |
| |
|
|
|
|
|
|
|
| ANSI CLASS |
Creepage distance (mm) |
Dry arcing distance (mm) |
cantilever strength (kN) |
Lower frequency flashover voltage |
Critical impulse flashover voltage |
Test voltage to ground (kV) |
| Dry(kV) |
Wet(kV) |
Positive(kV) |
| 57-2 |
559 |
241 |
12.5 |
100 |
70 |
160 |
22 |
| |
|
|
|
|
|
|
|
| ANSI CLASS |
Creepage distance (mm) |
Dry arcing distance (mm) |
cantilever strength (kN) |
Lower frequency flashover voltage |
Critical impulse flashover voltage |
Test voltage to ground (kV) |
| Dry(kV) |
Wet(kV) |
Positive(kV) |
| 57-3 |
737 |
311 |
12.5 |
125 |
95 |
200 |
30 |
| |
|
|
|
|
|
|
|
| ANSI CLASS |
Creepage distance (mm) |
Dry arcing distance (mm) |
cantilever strength (kN) |
Lower frequency flashover voltage |
Critical impulse flashover voltage |
Test voltage to ground (kV) |
| Dry(kV) |
Wet(kV) |
Positive(kV) |
| 57-4 |
1015 |
368 |
12.5 |
140 |
110 |
230 |
44 |
Descriptions:
1. Line post insulators shall conform in all respects to the requirements of ANSI standard.
2. The insulators shall be made of good commercial-grade wet-process porcelain.The entire surface of the insulator, with the exception of a firing surface, shall be glazed.If gray is required, it shall be in accordance with ANSI Z55.1-1967 (R1973).
3. Metal parts shall be made of a good commercial grade of malleable iron, ductile iron, steel, or
aluminum. Ferrous parts, other than stainless steel, shall be galvanized in accordance with ASTM A153.
Competitive advantages:
- over 100 combined years of product experience;
- exclusive supplier agreements with manufacturers across Asia & Europe to guarantee consistent quality and supply;
- exclusive customer own design orders to in-house manufacturing;
- international supplier network;
- just in time delivery, ensuring customers do not need to carry significant stock holdings;
- directly controlled manufacturing facilities and service;
- distribution anywhere in the world;
- 100% guarantee on customer orders
We pride ourselves on our service and the close relationships and loyalty we have with our
customer base. This is a result of the ongoing support we offer these organisations.
Should you require any additional information please do not hesitate to contact us.
Product Tags:
|
|
ANSI C29.7 Light Gray Glazed Porcelain Post Insulators Images
|
