| Technology | Analog |
| Excitation mode | SHUNT, 3-phase and 1-phase |
| Rated excitation current | 3.2 A |
| Regulation accuracy (+/- %) | 0.5 % |
| Frequency range | 10 – 100 Hz |
| Voltage setting range (+/- %) | 5 % |
| kU/F limitation | K = 1 |
| Loss of sensing voltage | – |
| Over-excitation limitation | – |
| Short circuit current limitation | – |
| Voltage droop | – |
| Parallel operation between alternators | – |
| Load Acceptance Module (LAM) | – |
Lorey Somer AVR (Model: R220)
The R220 automatic voltage regulator (AVR) for the Leroy-Somer LSA series of industrial alternators provides excitation current up to 3.2 A with excellent reliability for SHUNT excitation types.
The R220 AVR cannot be used in dedicated single-phase 60 Hz. Please use dedicated R221.
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