The main failure of an airfield ground lighting series circuit over time, will more than likely be water ingress through any cable joints. Although we can use many different joints that are all designed to help prevent ingress, it is commonly known that water will eventually breakdown the barrier. Airfield Ground Lighting (AGL) Transformer Mounting brackets can be used to help in overcoming this situation.
Isolating Transformers Mounting Bracket
Product Information
However, to go one step closer to reducing water ingress, it is recommended that all joints, where possible should be lifted out of any standing water. Within the pit and duct system, this can be achieved by the use of a transformer mounting bracket installed in the pit. These mounting brackets, now commonly known as ‘pit furniture’, are designed for various isolating ground transformers 10W-300W, and also can also accommodate lamp switching and monitoring devices, switchable transformers or addressable LMU’s that may be in use.
Even though transformer brackets are not essential, ATG’s pit furniture is still manufactured to meet BS 1449, and is fabricated from 2mm thick mild steel and finished with a polypropylene alloy to protect against corrosion.
Not only does the bracket allow for the transformers and the joints, to be kept out of standing water, it also assists in the identification from other transformers that may be co-located. All this helps to reduce the time spent fault finding, the ingress of water, and safety where multiple circuits are fed from one pit.
Product Data Sheet
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