| Application: | High-voltage, Low-voltage, High-temperature |
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| Material: | Composite Polymer |
| Structure: | Post Insulator |
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Description
Post insulators are used as supports for bus-bars in transformer sub-station yards, in switchgear as support for breakers, and for capacitor banks.These insulators are generally subjected to bending, torsion and compression forces in service. In some cases they may also be used as jumper loopinsulators for horizontal, upright or underhung installation. Depending on the installation, we offer several options of end fittings. Designs accordingto IEC, ANSI and other standards or to customer specification.
Rated System Voltage (kV) |
Section Length (mm) |
Arcing Distance (mm) |
Creepage Distance (mm) |
Specific Creepage Distance |
Specified Cantilever Load (kN) |
Specified torsional Load (kN·m) |
Specified Tensile Load (kN) |
Lightning Impulse Withstand Voltage (kV) |
Power Frequency Withstand Voltage (kV) |
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Dry |
Wet |
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| 35 | 560 | ≥400 | 1260(e)/1020(d) | 53.7(e)/43.3(d) | 6 | 4 | 10 | ≥200 | 100 | 80 |
| 35 | 560 | ≥400 | 1260(e)/1020(d) | 53.7(e)/43.3(d) | 12.5 | 6 | 10 | ≥200 | 100 | 80 |
| 66 | 770 | ≥600 | 2250(e)/1820(d) | 53.7(e)/43.3(d) | 6 | 4 | 10 | ≥325 | 175 | 140 |
| 66 | 770 | ≥600 | 2250(e)/1820(d) | 53.7(e)/43.3(d) | 12.5 | 6 | 10 | ≥325 | 175 | 140 |
| 110 | 1150 | ≥900 | 3910(e)/3150(d) | 53.7(e)/43.3(d) | 8 | 4 | 10 | ≥450 | 250 | 200 |
| 220 | 2300 | ≥1900 | 7820(e)/6300(d) | 53.7(e)/43.3(d) | 8 | 4 | 10 | ≥950 | 490 | 395 |
| 220 | 2300 | ≥1900 | 7820(e)/6300(d) | 53.7(e)/43.3(d) | 12.5 | 6 | 10 | ≥950 | 490 | 395 |
| 220 | 2300 | ≥1900 | 7820(e)/6300(d) | 53.7(e)/43.3(d) | 16 | 6 | 10 | ≥950 | 490 | 395 |
| 330 | 3650 | ≥3000 | 11260(e)/9080(d) | 53.7(e)/43.3(d) | 10 | 4 | 10 | ≥1175 | 635 | 510 |
| 750 | 7200 | ≥6500 | 24800(e)/20000(d) | 53.7(e)/43.3(d) | 12.5 | 6 | 10 | ≥2100 | 1200 | 960 |
| Order Information: 1.Voltage grade; 2.Specified mechanical load; 3.Creepage distance; 4.Power frequency withstand voltage; 5.Lightning impulse withstand voltage; 6.Insulation distance; 7.Coupling type; Ps. Different design could be supplied as customer requirements |
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