The R438 AVR is powered by two auxiliary windings which are self-sufficient of the voltage match circuit, the first winding has a voltage in proportion to that of the alternator(characteristic shunt), the second has a voltage in proportion to the stator current(compound characteristic: booster effect). The power supply voltage is rectified and filtered before being used by the AVR monitoring transisitor.
1.itable for high levels of vibration and harsh environments
2.and overload current:8A-10s
3.ase to phase voltage sensing
4.andard power supply: AREP or PMG
Voltage Regulation | ±0.5% |
Remote voltage adjustment range | ±0.5% |
Short circuit capability | 3 x Irated for 10 seconds |
Standard power supply | AREP or PMG |
Rated overload current | 8 A - 10 s |
Voltage sensing | 5 VA isolated via transforme |
0-110V terminals | 95 to 140V |
0-220V terminals | 170 to 260V |
0-380V terminals | 340 to 520V |
Voltage regulation | ± 1% |
Current sensing | C.T.2.5VA cl1,secondary 1 A |
Voltage sensing | 95~140 volts (50/60 Hz) |
170~260 volts (50/60 Hz) |
340~520 volts (50/60 Hz) |
Fit for | 1000 series generator |
2000 series generator |
3000 series generator |
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