User's Guide

Page 23
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This equipment must be earthed. The earth terminal of the ac connector should be used as
the safety earth.
An ac input connector (see Fig 11 and Fig 15) is fitted to the equipment’s rear panel. The cable used to
connect between the equipment and the user’s ac power source should be 3-core (to IEC 227) rated
250 Vac at 8 amps, and have a minimum cross-sectional area of 1.0 mm
2
per core. Park Air recommends
the use of polyvinyl chloride (PVC) insulated cable. The cable must be fitted with the IEC approved
equipment connector (Park Air part number 20-02030102) supplied with the transceiver, and conform to
the following specification:
❑ If PVC insulated, be not lighter than ordinary polyvinyl chloride sheathed flexible cord according
to IEC publication 227 (designation H05 VV-F, or H05 VVH2-F).
❑ If rubber insulated, be of synthetic rubber and not lighter than ordinary tough rubber-sheathed
flexible cord according to IEC publication 245 titled ‘Rubber Insulated Cables of Rated Voltages
up to and Including 450/750 V (designation H05 RR-F)’.
The T6TR transceiver is a Class 1 equipment. The ac supply cable should have a green-and-yellow
protective earthing conductor electrically connected to the protective earthing terminal of the equipment
connector and the mains plug. Park Air recommends the ac supply cable is colour coded in accordance
with the electrical appliance (colour code) regulations for the UK. That is:
❑ The core coloured green-and-yellow must be connected to the terminal in the plug that is marked
with the letter E or by the earth symbol or coloured green-and-yellow.
❑ The core coloured blue must be connected to the terminal that is marked with the letter N or
coloured black.
❑ The core coloured brown must be connected to the terminal that is marked with the letter L or
coloured red.
DC Supply Connection
The transceiver operates from either an ac, or a dc input supply. When both ac and dc are connected,
operation from the ac supply takes priority; automatic change-over to the dc supply occurs if the ac
supply fails. On restoration of the ac supply, the equipment reverts to ac operation.
A dc input supply connector (see Fig 11) is fitted to the equipment's rear panel. The recommended
minimum rating of the dc supply cable is: 2-core having a cross-sectional area of 1.5 mm
2
per core. The
supply cable should be fitted with an XLR3 connector (Park Air part number 20-01030106).
WARNING Earth Connection