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Radio Frequency Friendly!

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In addition to being far less conductive than metal or cast iron covers, Fibrelite’s composite covers allow electromagnetic (EMI) or radio frequency (RF) signals to pass directly through them. This allows engineers to install sensors and other devices inside a manhole that can then communicate to a receiver or network located aboveground. Fibrelite’s covers provide no interference to the signal, allowing the wireless transmission to pass uninterrupted to the surface.

Composite covers are also being used in wireless electric vehicle charging systems that are designed to be installed underground in parking lots. These systems will transmit power to the car battery parked overhead via an electric coil placed inside a composite manhole cover – this method of transmitting power allows for much faster vehicle charging than traditional cable charging as there is no power loss due to the resistance of the cable. For more information please click here.
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Aaron McConkey

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