DIMAT's wide-band coupling units fit a wide range of line impedances, and are suitable for phase-to-ground and phase-to-phase coupling. High insulation ensures the complete safety and protection of the users and the Power-Line Carrier (PLC) equipment. - UAM for standard performance - SAM for high performance
The coupling devices, in conjunction with coupling capacitors, allow the transmission of carrier frequency signals and, at the same time, offer an efficient protection against the effects of the power frequency voltage and transient overvoltages for personnel and PLC equipment.
The functions accomplished by UAM and SAM coupling units are: - Tuning of coupling capacitor - Impedance matching between power line and PLC equipment - Draining to earth of power frequency current . Limitation of voltage surges proceeding from the power line - Earthing of the coupling device for protection purposes during maintenance operations.
One coupling unit is used for phase-to-earth coupling. Another coupling unit and a differential transformer is required for phase-to-phase or intercircuit coupling.
Key Features
-Frequency range of 40 to 500 kHz, depending on the coupling capacitor -Nominal P.E.P. of 100 W (UAM) and 500 W (SAM) -Nominal equipment side impedance of 75 O and 125 O -Nominal line side impedance of 100 to 750 O for phase-to-earth coupling -Distortion and intermodulation lower than 80 dB below the nominal P.E.P. -Return loss better than -12 dB -Composite loss better than 2 dB -Optional external differential transformer (UAM) or internal differential transformer (SAM)
