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Acim Nidec R438
The R438 automatic voltage regulator (AVR) for the Leroy-Somer LSA series of industrial alternators provides excitation current up to 4 A with excellent reliability for AREP & PMG excitation types…
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5-6 Days
From €20
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2-3 Days
From €40
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Warranty 1 year
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Description
The R438 automatic voltage regulator (AVR) for the Leroy-Somer LSA series of industrial alternators provides excitation current up to 4 A with excellent reliability for AREP & PMG excitation types.Â
The R438 includes advanced protections such as over-excitation limitation and voltage sensing loss, and also features voltage droop for genset parallel operation. A Load Acceptance Module (LAM) is also included to handle load impact events.
Specification
|  Technology |  Analog  Analog |
|---|---|
| Â Excitation mode | AREP, PMG AREP, PMG |
| Â Rated excitation current | Â 4 A Â 4 A |
| Â Regulation accuracy (+/- %) | 0.5 % 0.5 % |
|  Frequency range | 10 – 100 Hz 10 – 100 Hz |
| Â Voltage setting range (+/- %) | 5 % 5 % |
| Â kU/F limitation | K = 1 K = 1 |
|  Loss of sensing voltage | ✓ ✓ |
|  Over-excitation limitation | ✓ ✓ |
| Â Short circuit current limitation | – – |
|  Voltage droop | ✓ ✓ |
|  Parallel operation between alternators | ✓ ✓ |
|  Load Acceptance Module (LAM) | ✓ ✓ |
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