• Completely digitally controlled regulator, based on DSP
• Installation on board the machine
• Suitable for all self-regulating alternators
• Supply voltage: 30Vac ÷ 280Vac (from auxiliary winding, output voltage or PMG)
• Frequency operation interval: 12Hz ÷ 72Hz
• “Sensing” of the voltage with measurement of the true effective value or the average value (0-900Vac)
• Maximum direct current at output: 5Adc; up to 15Adc during transients
• Precision of the voltage regulation: + 0.25% from no load to nominal load in static conditions with any power factor and for frequency variations included between -5% and +20% of the nominal value.
• Transient voltage droop and overvoltage within + 15%
• Voltage reset time: + 3% of the value set in less than 300 msec.
• Transient overvoltage at starting: less than 5% of the nominal voltage
• Single phase or three phase “sensing”, also on the phase with load
• Regulation at minimum, maximum or average voltage of the three phase voltages
• Parameters: VOLT, STAB, AMP, Hz, settable with trimmers (default), 50/60Hz with “jumper” (default); all the values can also be programmed via software
• Possibility of analogic remote control of the output voltage by way of external voltage (-5Vdc ÷ +5VDC) or with potentiometer
• Visualisation of the parameters and the operating conditions from a 7-segment display
• RS232 and RS485 serial communication interfaces
• Ambient temperature: -25°C - +70°C
• Under frequency protection with adjustable threshold and slope
• Overvoltage and undervoltage alarms with adjustable limits
• Excitation over-current protection with delayed intervention
• Transient short circuit handling (starting asynchronous motors)
• Signalling of winding overheating (optional module)
• Fault finder on the rotating diode bridge (currently R.B.D.)
• Protection against reference loss
• Insulated protection intervention signalling output
• Saving of the irregular operation conditions (type of alarm, number of events, duration of last event, sum of the times)
• Possibility of working with P.F.R. function (Power Factor Regulator, currently PFR96/A)