AVR R449

AVR Leroy somer R449 Automatic Voltage Regulator

Specifications

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 synchronisation.

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l  Steady state voltage regulation ± 0.5%

l  Short circuit capability: 3 x Irated for 10 seconds (AREP

l  or PMG excitation)

l  Voltage sensing:

l  0-110v Terminals = 95 to 140 volts (50/60 Hz) or

l  0-220v Terminals = 170 to 260 volts (50/60 Hz) or

l  0-380v Terminals = 340 to 520 volts (50/60 Hz)

l  Response time:

l  Normal (1 sec) for ± 20% voltage variation

l  or Rapid (0.3 sec) for ± 20% voltage variation

l  Remote voltage adjustment range: ± 5%