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- Description
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- Code map
- Contribute
- Competitive Models
- Manufacturer
- Send enquiry
- Vessels
- Spares
- Vendors
- Did you know
Description
Newer digital controller combo.
Did you know
- The Leroy-Somer D550 digital automatic voltage regulator (AVR) was announced by Nidec Leroy-Somer on July 29, 2019. It was introduced as a replacement for the D510C and older analog models like the R448, R449, and R450, signifying a shift towards enhanced digital capabilities.
- Within Leroy-Somer's digital voltage regulator lineup, the D550 is positioned as a mid-range option, offering an excitation current up to 7A at 70°C or 8A at 55°C. It sits between the D350, which provides up to 5A excitation current, and the D700, designed for higher power applications with up to 25A excitation current.
- The D550 is chosen for its advanced digital control, high current output supporting large alternators, and comprehensive connectivity options. It offers precise voltage regulation, integrated synchronization, load sharing features, and compliance with international grid codes, making it suitable for complex grid-parallel applications and demanding industrial and marine environments.
| Model | Technology | Rated Excitation Current (continuous) | Regulation Accuracy (+/- %) | Communication Interfaces |
|---|---|---|---|---|
| D350 | Digital | 5 A | 0.25 | CAN Bus, USB |
| D550 | Digital | 7 A (at 70°C) / 8 A (at 55°C) | 0.25 | USB, CANbus (J1939), RS485 (Modbus RTU) |
| D700 | Digital | 25 A | 0.25 | CAN Bus, USB |
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 ^ZVBZ D550. One broadcast per day.
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Code map
^Z V B Z │ │ │ └── Model: D550 │ │ └───── Make: Leroy-Somer (Nidec) │ └──────── Equipment: Automatic Voltage Regulator └─────────── System: Automation Spares