132 kv transmission line towers and conductors

[neduet]

Dear friends

1.What is wind span ,wight span and normal span, and what is the difference.

2. Factory acceptance test. FAT. For towers what is that meaning and what is necessary test to be require to do or check.

Thanks

 

[DEvens]

Google is your friend. I found these in three minutes.

https://www.powline.com/products/weightspan.pdf
https://www.powline.com/products/windwgt.html

FAT is one of those engineering things that everybody knows but nobody can define. It is different for every product. Basically, it is a set of tests with pre-defined acceptance limits. A product (tool, process, device, etc.) must pass these before it leaves the factory to be used by the client. The test may be different for different applications. It may have different levels of acceptance meaning the product is acceptable for different levels of use. It may have conditional acceptance levels where the product is degraded in some way from the maximum possible level.

Often (but not always) the client will send an observer to be present during FAT. For products with exceptionally large potential for harm (nuclear reactors, large bridges, oil refineries, etc.) the government regular may send an observer.

The FAT for a transmission tower is going to depend on the detailed design of the tower, and the conditions it must endure. It probably has some seismic component. It probably has some wind loading and ice loading. It probably has some testing of the insulation properties to hold the wires. It might have to withstand some other things like spray from the ocean if it is near the ocean. Generally, it will be specified by the Engineer in Charge (or whatever the top engineer is called on the project). He will consult with a variety of people in creating this specification.

 

[neduet]

thanks dear,