The R448 Automatic Voltage Regulator (AVR) is an advanced electronic component that provides closed loop control of the generator output voltage. The R448 AVR is fitted as standard on the following generators:
Voltage regulation:± 0.5%
Leroy Somer AVR
Leroy Somer AVR R448 | Original
- Voltage regulation ± 0.5%
- Short circuit capability: 3 x Irated for 10 seconds (AREP or PMG excitation)
- Voltage sensing: 95 to 140 volts (50/60 Hz) or 170 to 260 volts (50/60 Hz) or 340 to 520 volts (50/60 Hz)
- Response time: Normal (1 sec) for ± 20% voltage variation or Rapid (0.3 sec) for ± 20% voltage variation
- Remote voltage adjustment range of: ± 5%
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Related products
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AVR | Generic Replacements
AVR R438 | Generic
- Voltage regulation ±0.5%
- Short circuit capability: 3 x Irated for 10 seconds ( AREP or PMG excitation)
- Voltage sensing: 95 to 140 volts (50/60 Hz) or 170 to 260 volts (50/60 Hz) or 340 to 520 volts (50/60 Hz)
- Response time: Normal (1sec) for _+20% voltage variation or rapid (0.3 sec) for ∼+20% voltage variation.
- Remote voltage adjustment range of: _+5% *1000 Series alternators do not have PMG option.
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SKU: R438G -
Leroy Somer AVR
Leroy Somer AVR R438 | Original
Fuse: F1on X1,X2.10A;slow-250V
- Voltage sensing : 5 VA isolated via trans- former • 0-110 V terminals = 95 to 140 V • 0-220 V terminals = 170 to 260 V • 0-380 V terminals = 340 to 520 V for other voltages, a transformer should be used.
- Voltage regulation ± 0.5%
- Normal or rapid response time via jumper ST2 (see below)
- Voltage adjustment via potentiometer P2 or apply a DC voltage of ± 1 V on the terminals of the external potentiometer
- Current sensing: (parallel operation): input S1, S2 intended for 1 C.T. Š 2.5 VA cl1, secondary 1A (optional)
- Quadrature droop adjustment via potentio- meter P1
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SKU: R438 -
AVR | Generic Replacements
AVR VR6 | Generic
- Power: Shunt Excited
- Input: 180-280 Vac, 50/60 Hz, 1 OR 3 phase
- PMG Excited 63-105 Vac 100/240 Hz 3 phase
- Sensing input: 180-240 Vac, 50/60 Hz 1 OR 3 phase
- CT input: 1 or 5 Aac 50/60 Hz
- ACC input: +/- 3 Vdc. Output 65 Vdc @ 12 Adc
- Unit Type: Potted – Rugged
- Weight: 1.5 kgSize: 9.4 in x 7.1 in x 3.5 in
- 4 mounting holes
- 1 Year Warranty
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SKU: VR6G -
Leroy Somer AVR
Leroy Somer AVR R450 | Original
The R450 AVR is supplied in a casing designed to be mounted on a panel with dampers.
- Operating temperature: – 30°C to + 65° C. – Storage temperature: – 55°C to + 85°C.
- Shocks on the base: 9 g depending on the 3 axes.
- Vibrations: less than 10 Hz, 2 mm half-peak amplitude 10 Hz to 100 Hz: 100 mm/s, above 100 Hz: 8 g.
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SKU: R450
