26-02-2011, 08:27 PM
(26-02-2011, 11:42 AM)Archie Wrote: Anyone got any lit on all the different types of AWS?
Many thanks
Not really sure what you are after.......
Functionally there are two strengths of AWS; the usual Yellow and the extra-strength Green for use on dc electrified lines.
There are three types of each: the plain permanent, the suppressed permanent and the electro; obviously also a whole host of mounting paraphernalia etc. that is of practically no interest from IRSE Exam viewpoint but very significant for a proper site installation.
Over the years there have been various variants of each type,made possible by technology advances; first the yellow electros could be made to sit above the sleepers rather than requiring a ballast bed to be dug out for them, now also the suppressors.
So could you be more precise regarding what sort of information you are seeking
PJW