ContentsBroadcast
- Description
- Download material
- Code map
- Contribute
- Competitive Models
- Manufacturer
- Send enquiry
- Vessels
- Spares
- Vendors
- Did you know
Description
R220 variant (service).
Did you know
- Leroy-Somer, now part of Nidec, has a long heritage in producing alternators and electric motors, originating from the Charente region of France. The R220M is an analog Automatic Voltage Regulator (AVR) designed for small alternators with SHUNT excitation.
- The R220M is positioned as an entry-level analog AVR for SHUNT excitation systems. It is a simpler alternative to models like the R438 and R450, which support more complex AREP or PMG excitation systems and offer additional features like parallel operation.
- The R220M is chosen for its straightforward design, ease of use, and reliability in maintaining alternator output voltage for small alternators with SHUNT excitation. Its compact and economical design makes it suitable for basic voltage regulation needs.
| Model | Excitation System | Voltage Regulation | Nominal Excitation Current | Parallel Operation |
|---|---|---|---|---|
| R220M | SHUNT | ± 0.5% | 3A | No |
| R250 | SHUNT | ± 0.5% | 5A | No |
| R230 | SHUNT | ± 0.5% | 8A (continuous) | No |
| R438 | AREP or PMG | ± 0.5% | 5A | Yes (with CT droop input) |
| R450 | SHUNT/AREP and PMG | ± 0.5% | 6A | Yes (with optional modules) |
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 ^ZVBU R220M. One broadcast per day.
Contribute or correct
Spotted a missing or incorrect entry? Let the maintainers know. Zulu Code is open under CC BY 4.0 — every correction strengthens the standard for the whole industry.
Code map
^Z V B U │ │ │ └── Model: R220M │ │ └───── Make: Leroy-Somer (Nidec) │ └──────── Equipment: Automatic Voltage Regulator └─────────── System: Automation Spares