What is polymer insulator?
Polymer insulator is a kind of insulator with polymer insulation parts, and it is also named also named composite insulators, silicone rubber insulator. Usually, the insulation parts are made of silicone rubber, Al(OH)3 and fillers. This kind of insulators have the same function of glass insulators and ceramic insulators, when applied for power systems with a voltage over 1000V.
Classification of polymer insulators
When classified by how the insulators are applied, they can be classified into:
- Polymer suspension insulator
- Polymer tension insulator
- Polymer line post insulator
- Polymer station post insulator
- Polymer pin type insulator
- Polymer spacers
- …
When classified by power system voltages, they can be classified into:
- High voltage insulator (≥69 kV)
- Medium voltage insulator (<69 kV)
- Ultra High voltage insulator (≥800 kV)
Advantages of polymer insulators
| Problem |
Disk Ceramic Insulator |
Disk Glass Insulator |
composite long rod insulator |
| Lightning |
♦ |
♦ |
♦♦ |
| Flashover |
♦ |
♦ |
♦♦ |
| Bird broken |
♦♦ |
♦♦ |
♦ |
| Windproof |
♦♦ |
♦♦ |
♦ |
| String breakdown and fallen |
♦♦♦ |
♦♦♦ |
♦♦♦ |
| Aging |
♦♦ |
♦♦♦ |
♦♦ |
| Damage by force |
♦ |
♦ |
♦♦♦ |
| Easy for Maintainence |
♦ |
♦ |
♦♦♦ |
Installation Dimensions of Composite dry wall bushing
| Model No. |
Total Length (MM) |
Outdoor Insulation Distance (MM) |
Outdoor Minimum Creepage Distance (MM) |
Indoor Insulation Distance (MM) |
Indoor Mnimum Creepage Distance (MM) |
Maximum length of indoor end (MM) |
Flange Thickness
(MM) |
Flange Hole Center Spacing (MM) |
Number of Flange Holes (N) |
Terminal Hole Distance
(MM) |
Terminal Hole No. (N) |
| FCGW-10/200-630 |
530 |
190 |
285 |
200 |
240 |
280 |
10 |
Φ90 |
4-Φ14 |
M16 |
|
| FCGW-10/800-4000 |
570 |
190 |
420 |
200 |
240 |
370 |
10 |
Φ170 |
4-Φ18 |
40*40 |
4-Φ14 |
| FCGW-10/800-3150(plateau type) |
760 |
210 |
440 |
210 |
430 |
470 |
10 |
Φ175 |
2-Φ18 |
40*40 |
4-Φ14 |
| FCGW-24/400-4000 |
800 |
210 |
640 |
220 |
620 |
480 |
10 |
Φ170 |
4-Φ18 |
40*40 |
4-Φ14 |
| FCGW-35/630-4000 |
1100 |
410 |
1140 |
370 |
780 |
580 |
12 |
Φ200 |
4-Φ18 |
40*40 |
4-Φ14 |
| FCGW-35/630-4000 (plateau type) |
1300 |
410 |
1140 |
370 |
780 |
680 |
12 |
Φ200 |
4-Φ18 |
40*40 |
4-Φ14 |
| FCGW-66/630-2000 |
2100 |
710 |
2250 |
710 |
2200 |
1100 |
15 |
Φ350 |
6-Φ18 |
40*40 |
4-Φ14 |
| FCGW-110/630-2000 |
3000 |
1150 |
3150 |
1150 |
3100 |
1520 |
15 |
Φ350 |
6-Φ18 |
40*40 |
4-Φ14
|
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