NEW AVR SR7 SR7-2G AVR SR 7/2 AVR SR7 AVR SR 7 for MECC ALTE SR7-2G

SR7-2G Features and Capabilities:

• 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: 4Adc
• 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
• Underspeed protection with adjustable threshold and slope
• Overvoltage and undervoltage alarms
• Excitation overcurrent protection with delayed intervention
• Management of temporary short circuits (start up of asynchronous motors)