Composite line post insulators service conditions include environmental condition and system conditions to decide how to use insulators. This article lists some service conditions.
Composite line post insulators environmental conditions
Temperatures: 50℃ summer day time; -20℃ winter night time
Solar Radiation Level: 1 000 Wm-2 with high ultraviolet content
Precipitation: Tropical summer storms with high wind speeds and an annual rainfall in excess of 1500mm
Humidity: Extended periods of relative humidity in excess of 90%
Pollution: Areas of coastal salt spray and/or industrial pollution with equivalent salt deposit densities in the range 2.0 to 3.0 gm-2
Wind Velocity: 210km/hr (58m/s)
Composite line post insulators system conditions (66kv & 132kv)
Characteristic | Units | Item1 | Item 2&3 |
Normal system operating voltgae | KV | 132 | 66 |
Maximum continuous operating voltage | KV | 148 | 72.5 |
System frequency | Hz | 50 | 50 |
Phase to phase separation (vertical) | mm | 2200 | 1800 |
Earth fault current with duration of 0.7 sec | kA | 7.8 | 7.8 |
Composite line post insulators service conditions also include main technical parameters. The system conditions just list 66kv & 132kV line post insulators data. Orient Power can provide more types of line posts, such as 72.5kv, 33kv and 11kv insulators.
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