Mecc Alte AVR DSR – Digital Automatic Voltage Regulator

The Mecc Alte AVR DSR is a state-of-the-art digital automatic voltage regulator (AVR) designed for synchronous alternators and generator systems. Built on a DSP-controlled architecture, it delivers precise voltage regulation, supports auxiliary winding (MAUX) and PMG excitation systems, and offers advanced monitoring and communication capabilities for modern power setups. Ideal for industrial, standby and commercial generators requiring strong performance and system diagnostics.
Key Features:

• Digital control with true-RMS or average voltage sensing (70-280 V AC) and broad supply range (40-270 V AC) 

• Voltage regulation accuracy: approximately ±1% under no-load to nominal load, including varying power factor and frequency conditions. 

• Output current capability: continuous up to ~4-5 A DC for excitation control. 

• Protection & monitoring: Over-voltage, under-voltage, under-speed/over-speed, excitation over-current, loss of excitation, short-circuit detection. 

• Communication interface: RS232/RS485 (MODBUS) via optional modules, enabling parameter setting and real-time monitoring. 

• Operating temperature: –25 °C to +70 °C, making it suitable for demanding environments.