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  2. Power Master ADVR-250 Automatic Voltage Regulator

Power Master ADVR-250 Automatic Voltage Regulator

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Replacement Leroy Somers R250

$ 240.59 240.59 USD $ 240.59

$ 240.59

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ADVR ADVR-250 Mcpherson Controls
Documents
ADVR-250.pdf

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SENSING INPUT 

85V AC - 140V AC
single phase, 2-wire


OUTPUT

120V single-phase
Continuous 63V dc 3.5A

WEIGHT

0.66 POUNDS

SIZE

 140 X 81 X 47 Inches


VOLTAGE REGULATION

80-140 VAC single phase, 2 wire

 


Automatic Voltage Regulator (AVR) compatible with Leroy Somer R250

With two-line sensing, ADVR-250 is a hybrid analog-digital AVR for self-excited (shunt) generators. It's compatible with Leroy Somer* R250 and can also replace R230. The innovative heat sink design significantly improves the heat radiation efficiency. Employing a digital circuit for voltage sensing and under frequency protection, it can effectively minimize the output voltage variations and under frequency knee point drifted affected by the changes of environment temperature.


BUILD UP VOLTAGE

Residual voltage at AVR terminal > 5 VAC, 25Hz  

THERMAL DRIFT

-40 to +70 °C -3% 

POWER DISSIPATION

Max. 8 watts 

  • Sensing Input -  ◖ Voltage: 85-140 V ac single phase, 2-wire   ◖ Frequency: 50/60 Hz  
  • Output -   ◖120V single-phase Continuous: 63 Vdc 3.5A / Max.  110 Vdc 5A 10 Sec ◖Resistance: Min.18Ω - Max.100Ω
  • External Voltage Adjustment - 1KΩ Max.+/- 14% - 1 KΩ 1 watt
  • Build Up Voltage - Residual voltage at AVR terminal > 5 VAC, 25Hz  
  • Soft start ramp time - 3 secs +/- 10%
  • Voltage Regulation - 80-140 VAC single phase, 2 wire
  • Response Time - Less than 20 milliseconds
  • EMI Suppression - Internal electromagnetic interference filtering


  • Power Dissipation - Max. 8 watts
  • Under Frequency Protection - 50 Hz system  knee point at 48 Hz / 60 Hz system  knee point at 58 Hz
  • Over Excitation Protection - Excitation Current 5 A +/- 10 %
  • Thermal Drift - -40 to +70 °C -3%
  • Under Frequency Knee Point Thermal Drift -  -40 to +70 °C (-) +/- 0.1 Hz
  • Environment - ◖Operation Temperature: -40 to +70 ˚C ◖Storage Temperature: -40 to +85 ˚C ◖Relative Humidity: < 95% ◖Vibration: 5.5Gs @ 60Hz


ADVR-250 is a hybrid analog-digital AVR for self-excited (shunt) generators. It's compatible with Leroy Somer R250 and can also replace R230. The innovative heat sink design significantly improves the heat radiation efficiency. Employing a digital circuit for voltage sensing and under frequency protection, it can effectively minimize the output voltage variations and under frequency knee point drifted affected by the changes of environment temperature.

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