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R438 AVR For Leroy-Somer Alternators
Specifications Of R438
| Technology | Analog |
| Excitation mode | AREP, PMG |
| Rated excitation current | 4 A |
| Regulation accuracy (+/- %) | 0.50% |
| 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) | ✓ |
| Compatible products | |
| LSA 40 | |
| LSA 42.3 | |
| LSA 44.3 | |
| TAL 40 | |
| TAL 42 | |
| TAL 44 (for 12 lead option) | |
| Options | |
| R726 module for Cos Phi regulation | |
| R729 for Cos Phi + kVAr regulation & 4-20 mA signal treatment | |
| External potentiometer | |
Others AVR
| AVR-8A | R449 |
| AVR-12A | SE350 |
| AVR-15A | SX440 |
| MX341 | AS440 |
| MX321 | SX460 |
| R230 | VR6 |
| R438 | SR7-2G |
| R448 | UVR6 |
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