Leroy Somer Automatic Voltage Regulators Diesel Generator AVR R449
The circuitry of the R449 Automatic Voltage Regulator (AVR) provides closed loop control of the alternator output voltage by regulating the exciter field current. The primary winding has a voltage in ratio to that of the alternator (characteristic shunt), the next has a voltage in proportion to the stator current (compound characteristic: booster effect). Which is powered by two auxiliary windings which are independent of the voltage equal circuit. The power supply voltage is rectified and filtered before being used by the AVR monitoring transistor. With PMG excitatioin, a permanent magnet generator (PMG) added to the alternator supplies the AVR with voltage which is free of the main alternator winding. This is built-in at the rear of the machine and connected to the R448 AVR, and the ST9 jumper must be disconnected.
|Sensing Input||Terminal 0-110V = 95~140V|
Terminal 0-220V = 170~260V
Terminal 0-380V = 340~520V
Frequency 50/60 Hz selectable
|Power Input||Voltage 40~150 VAC 3 phase|
|Output Current||Max. 10A|
|Current Droop||Max. 4% @ P.F.=0.8|
|Voltage Regulation||< ±0.5% (with 4% engine governing)|
|Voltage Build-up||Residual volts at AVR terminal > 5 VAC|
|Voltage Output||Max. 160 VDC @ 120 VAC|
|External Voltage Adjustment||±10% @ 1 K Ohm 1 watt trimmer|
|Auxiliary Winding||6~150 VAC (No load rms)|
|Response Time||0.3~1 sec. @ ±20% voltage vibration|
|LAM Voltage Droop Rate||10% & 15% selectable|
|Environment||Operating Temperature : -40~60 °C|
Storage Temperature : -40~85 °C
Relative Humidity : Maximum 95%
Vibration : 1.5G @ 5~30 Hz / 5.0G @ 30~500 Hz
|AVR Controls Functions||VOLT : Voltage Adjustment|
STAB : Stability Adjustment
V/HZ : UFRO Knee Point Set
EXC.MAX : Excitation Current Limit
STAT : Droop Adjustment
|Dimensions||203.0 (L) x 153.0 (W) x 60.5 (H) mm|
Warranty: 2 years
after receiving payment, We offer two way delivery:
Delivery: 1. Quantity below 100pcs, within 2-3 days
2. Quantity above 100 pcs, within 7 days
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4.Items are shipped from China by Airmail, reach most of the countries within 4 to 20 business days.
5.Delivery time depends on destination and other factors, it may takes up to 20 business days.
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1. Guarantee:1 year after selled.
2. During guarantee,the items share free repairs or replacement.
3. Customer is responsible for the freight come-and-go,and the custom tax.
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