Structure of a NGK line post insulator consists mainly of an FRP Core, a Silicone Rubber Housing and Metal End Fittings. In many cases, Composite line post insulator horizontal is mounted to a supporting structure (wooden or steel pole, tower, etc.) through an additional base.
line post insulator
Structure of a NGK line post insulator that is one main of composite insulators
The FRP Core is the internal insulating member designed to ensure the mechanical characteristics. The Silicone Rubber
Housing is the external insulation, which provides the necessary leakage distance and protects the core from the weather.
Metal End Fittings are assembled to the both ends of the core for the purpose of transmitting mechanical loads to the core. A base adapts the end fitting for mounting to a supporting structure.
NGK line post insulator main technical parameters
Typical system voltage, kV | NO. sheds | “X” length mm |
Arcing distance mm | Leakage distance mm | Low frequency flashover | Critical impulse flashover | Maximum design cantilever load kN |
Weight kg |
||
Dry kV | Wet kV | Pos. kV | Neg. kV | |||||||
46 | 9 | 501 | 330.0 | 879 | 150 | 125 | 255 | 310 | 8.0 | 6.9 |
46 | 11 | 561 | 390.0 | 1071 | 175 | 145 | 290 | 340 | 6.9 | 7.4 |
46/69 | 13 | 621 | 450.0 | 1263 | 195 | 165 | 320 | 365 | 6.0 | 7.9 |
69 | 15 | 681 | 510.0 | 1455 | 220 | 185 | 350 | 390 | 5.4 | 8.3 |
69 | 17 | 741 | 570.0 | 1647 | 240 | 205 | 380 | 420 | 4.9 | 8.8 |
69 | 19 | 801 | 630.0 | 1839 | 265 | 230 | 410 | 445 | 4.4 | 9.3 |
69 | 21 | 861 | 690.0 | 2031 | 290 | 250 | 440 | 475 | 4.1 | 9.7 |
Typical system voltage, kV | NO. sheds | “X” length mm |
Arcing distance mm | Leakage distance mm | Low frequency flashover | Critical impulse flashover | Maximum design cantilever load kN |
Weight kg |
||
Dry kV | Wet kV | Pos. kV | Neg. kV | |||||||
46 | 9 | 488 | 330.0 | 879 | 150 | 125 | 255 | 310 | 6.7 | 9.1 |
46 | 11 | 548 | 390.0 | 1071 | 175 | 145 | 290 | 340 | 5.8 | 9.5 |
46/69 | 13 | 608 | 450.0 | 1263 | 195 | 165 | 320 | 365 | 5.0 | 10.0 |
69 | 15 | 667 | 510.0 | 1455 | 220 | 185 | 350 | 390 | 4.5 | 10.4 |
69 | 17 | 727 | 570.0 | 1647 | 240 | 205 | 380 | 420 | 4.1 | 10.9 |
69 | 19 | 787 | 630.0 | 1839 | 265 | 230 | 410 | 445 | 3.7 | 11.4 |
69 | 21 | 847 | 690.0 | 2031 | 290 | 250 | 440 | 475 | 3.4 | 11.8 |
Compared to NGK line post insulator, as a leading composite insulator manufacturer, Orient Power also produced all type line post insulators in accordance with international standards or clients’ drawings. If you want to buy these type insulators, please contact Orient Power.
Relative Articles:
Horizontal line post insulator
Composite line post insulator,composite insulator line post
Polymer tie top line post insulators
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