| Technology | Analog |
| Excitation mode | SHUNT, AREP, PMG |
| Rated excitation current | 6 A |
| Regulation accuracy (+/- %) | 0.5 % |
| Frequency range | 10 – 100 Hz |
| Voltage setting range (+/- %) | 5 % |
| kU/F limitation | K = 1&2 |
| Loss of sensing voltage | ✓ |
| Over-excitation limitation | ✓ |
| Short circuit current limitation | ✓ |
| Voltage droop | ✓ |
| Parallel operation between alternators | ✓ |
| Load Acceptance Module (LAM) | ✓ |
Leroy Somer AVR (Model: R450)
The R450 automatic voltage regulator (AVR) for the LSA series of industrial alternators provides excitation current up to 6 A with excellent reliability for SHUNT, permanent magnet (PMG) or AREP (auxiliary winding) excitation types.
The R450 includes advanced protections such as over-excitation limitation and voltage sensing loss, and also features voltage droop for genset parallel operation. The R450 is also equipped with a Load Acceptance Module (LAM) to handle load impact events.
Variants
- R450M with Mate-N-Lok connectors
- R450T with Mate-N-Lok connectors and 3-phase sensing module
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