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- Description
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- Code map
- Contribute
- Competitive Models
- Manufacturer
- Send enquiry
- Vessels
- Spares
- Vendors
- Did you know
Description
R438 revision for LSA-specific framings.
Did you know
- The Leroy-Somer R438-LS Automatic Voltage Regulator (AVR) is considered one of Leroy-Somer's older, yet still highly regarded, offerings.
- The R438-LS is designed for alternators with AREP or PMG excitation systems, distinguishing it from models like the R250 or R220, which are recommended for shunt excitation applications.
- The R438-LS is chosen for its reliable voltage stability, maintaining regulation within ±1% (or ±0.5% in some specifications) even under demanding industrial load conditions. It also features an integrated Load Acceptance Module (LAM) system as standard, which helps manage voltage drop during sudden load applications.
| Model | Excitation System | Voltage Regulation | LAM System | Max Excitation Current (10s) |
|---|---|---|---|---|
| R438-LS | AREP or PMG | ±1% (or ±0.5%) | Integrated (Standard) | 8A |
| R250 | Shunt | ±1% | Integrated (Standard) | Not specified (lower than R438) |
| R450 | AREP or PMG | ±0.5% | Integrated (Standard) | Not specified (adjustable 1-5.5A continuous) |
Competitive Models
^ZVCX DSEA106
Original DSEA106 (pre-MKII, legacy service).
^ZVEF SE500
Higher-capacity analog AVR.
^ZVCU DSE0700 MKII
Pocket-size genset control.
^ZVAF SX421
Earlier shunt-excited variant, still serviced on older sets.
^ZVCB DSEA109 MKII
Higher-power standalone AVR with external voltage trim input.
Send enquiry
Send an enquiry to the manufacturer of ^ZVBS R438-LS. One broadcast per day.
Contribute or correct
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Code map
^Z V B S │ │ │ └── Model: R438-LS │ │ └───── Make: Leroy-Somer (Nidec) │ └──────── Equipment: Automatic Voltage Regulator └─────────── System: Automation Spares