DSR Mecc Alte Automatic Voltage Regulator AVR For Generator

Technical Specifications

• Full digital controlled regulator, based on DSP
• On-board machine installation
• Suitable for all self-regulated alternators
• Voltage supply: 40Vac?270Vac (from auxiliary winding, output voltage or PMG)
• Frequency range: 12Hz ? 72Hz
• ?Sensing? of voltage with true RMS or average measurement (70?280 Vac)
• Maximum continuous output current: 5Adc;
• Precision of voltage regulation: ? 1% from no-load to nominal load in static condition, with any power factor and for frequency variations ranging from -5% to +20% of the nominal value.
• In order to avoid damage to persons and/or property, only qualified personnel, having full knowledge and understanding of the information contained in this manual, should perform the procedures described herein; when power to the unit is on, the voltage present may be lethal for the operator.
• All connections must be made with the power off.
• The plastic protections on connectors J1 and J2 must not be removed for any reason whatsoever.
• Instruction Manual DSR digital regulator – rev. 08 – pag. 5
• Precision of voltage regulation: ? 1% from no-load to nominal load in static condition, with any power factor and for frequency variations ranging from -5% to +20% of the nominal value.
• ?Transient power drops and overvoltage within ? 15%
• Voltage recovery time within ? 3% of the value set, in less than 300 msec.
• Transient overvoltage during start up: less than 5% of nominal voltage.
• Single phase sensing
• Parameters: VOLT, STAB, AMP and Hz can be set with trimmers (default) 50/60Hz through a ?jumper? (default); all parameters can be programmed via software.
• Analogical remote control of output voltage is possible through external voltage (0?2,5Vdc) or with a 10 Kohm linear potentiometer.
• Environmental temperature: -25?C ? +70?C
• Under speed protection with adjustable threshold and slope
• Underexcitation alarm / loss of excitation (4)
• Excitation overcurrent protection with delayed intervention
• Management of temporary short circuits (start up of asynchronous motors)
• (Non-isolated) Open collector output signalling the intervention of protections with a configurable activation for individual alarms, possibility to delay the intervention and selectable active level.
• Abnormal operation conditions storage (type of alarm, number of events, duration of the last event, total time)
• Memorization of the regulator operation time (starting from revision 11 of the Firmware)
• USB communication interface (with an optional USB2DxR module)