Important notice : -
Always use a 3 – wire moulded mains plug with
integral lead with IEC female connector to connect to the
controller, in the UK, commonly known as a ‘kettle plug’
lead. It is essential that the mains earth is connected to
the controllers to prevent electric shock.
Controllers with ungrounded enclosures can
become lethal devices in the event of a transformer
insulation failure or accidental connection of the live
supply to the enclosure. Whereas with a grounded enclosure,
such a failure simply blows the mains fuse.
All DC controllers supplied by TPA require
earthing to stop unwanted interference either incoming or
outgoing. The TPA DC regulated power supply and the TPA DC
speed controllers, have an integral LC line filter. The line
filter serves the purpose of preventing possible radiation
of radiofrequency interference (RFI) from the controller via
the power line, as well as filtering out incoming
interference that may be present on the power line.
For the filter to provide optimum performance
it is essential that the mains earth is connected.