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%
AVR | Generic Replacements
Leroy Somer AVR R448 | 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 (1 sec) for ± 20% voltage variation or Rapid (0.3 sec) for ± 20% voltage variation
- Remote voltage adjustment range of: ± 5%
$97.60
| BRANDS | Power Master Inc. |
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AVR | Generic Replacements
Leroy Somer AVR R450 | Generic
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.
SKU: R450G -
AVR | Generic Replacements
Leroy Somer AVR R449 | Generic Replacement R448
The regulator includes:
- 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)
- A response time jumper ST2 – A frequency selection jumper ST3 – An external voltage setting jumper ST4 – A LAM (load adjustment module) jumper ST5
- From R449 Version E number 10,000, this jumper will be removable.
- A selecti
SKU: R449G -
Leroy Somer AVR
Leroy Somer R250 | Original
- Power Input: AC 80-140V (50 / 60Hz)
- Maximum output: DC 90V / 6A / 10S
- Detection voltage input: AC 115V
- Voltage regulation rate: ≤ ± 1% External voltage trimming 1K / 2W potentiometer ± 10%
- Voltage regulation +/- 0.5% at steady state and constant speed
SKU: R250
