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Power Master R449 Automatic Voltage Regulator

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R449 Voltage Regulator AVR

$ 93.49 93.49 USD $ 93.49

$ 93.49

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SENSING INPUT 

85V AC - 140V AC single phase, 2-wire


OUTPUT

120V single-phase Continuous 63V dc 3.5A


WEIGHT

2.7 POUNDS

SIZE

 9 x 6.5 x 2.5 Inches


SHUNT SUPPLY

150V - 50/60Hz



The R 449 voltage regulator is of a shunt type. It is designed to fit as standard on A50 to A 54 alternators. It can be supplied with power either by a power VT, or by the AREP field excitation system, or by a single-phase or 3-phase PMG. Using the R 726 external module, the regulator can control the power factor (2F) and can match the alternator voltage to the mains voltage (3F) prior to synchronization. ​

RATED OVERLOAD CURRENT 

15A / 10s

EXCITATION OVER CURRENT ADJUSTMENT

4.5 to 15A For 50/60 Hz (U/F) 


CONTACTS CAPACITY

15A. 250V AC

  • A main terminal strip (10 terminals)
  • A secondary terminal block (5 terminals)
  • A frequency selection terminal block (3 terminals) – A quadrature droop potentiometer
  • A voltage potentiometer
  • A stability potentiometer
  • A maximum excitation potentiometer
  • A sensing selection jumper ST1 (single/3-phase with an external module)
  • Normal AVR supply power: 2 auxiliary windings
  • (X1, X2, and Z, Z2)
  • Shunt supply : 150V - 50/60Hz
  • Rated overload current: 15A,10s.
  • Electronic built-in (overload, short circuit, and loss of
  • sensing) protection: lf excitation current raises over 10
  • Amps for more then 10 seconds, excitation current will
  • drops automatically to about lA.
  • To reset AVR protection, generator must be stopped (or
  • by cutting supply voltage to the AVR).
  • Protection of power inputs by fuses FI






  • Voltage sensing: 5VA insulated transformer with. input
  • voltage taps at:
  • Terminals 0-110V = 95 to 140V
  • Terminals 0-220 V = 170 to 260 V
  • Terminals 0-380 V = 340 to 520V
  • Output Voltage adjustment by using pot P2
  • Other sensing voltages by using an adapting other
  • transfomers
  • Current sensing (parallel operation) CT 2.5 VA class 1
  • secondary current xxx/1 (optional).
  • Adjustment of quadrature droop with pot PI
  • Under-speed (U/F) and LAM protection: for kn-ee
  • frequency adjustable use P4.
  • Excitation over current adjustment: 4.5 to 15A
  • For 50/60 Hz (U/F) 
  • Contacts capacity: 15A. 250V AC




The R449 voltage regulator is of a shunt type. It is designed to fit as standard on A50 to A 54 alternators. It can be supplied with power either by a power VT, or by the AREP field excitation system, or by a single-phase or 3-phase PMG. Using the R 726 external module, the regulator can control the power factor and can match the alternator voltage to the mains voltage prior to synchronization.​



Normal AVR supply power: 2Auxiliary windings(X1,X2,and Z,Z2) Shunt supply:150V-50/60Hz Rated overload current:10A,10s  Electronic built-in(overload,shortcircuit,and loss of sensing) Protection of power inputs by fuses F1 Voltage Sensing:5VA insulated transformer with input voltage taps at: Terminals 0-110V=95 to 140V Terminals 0-220V=170 to 260V Terminals 0-380V=340 to 520V