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- Description
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- Competitive Models
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- Vessels
- Spares
- Vendors
- Did you know
Description
Tropical specification of R450M.
Did you know
- Leroy-Somer, a French company established in 1919 by Marcellin Leroy, manufactures the R450T. The R450T is a variant of the R450 series of Automatic Voltage Regulators.
- The R450T is an analog Automatic Voltage Regulator (AVR) within Leroy-Somer's product line, designed for industrial alternators with SHUNT, AREP, or PMG excitation. It is a three-phase sensing version, distinguishing it from the R450M which offers single-phase sensing. Other analog AVRs in their range include the R250 and R438, while the D510C is a digital option.
- The R450T is chosen for its ability to maintain consistent electrical output in generator systems, offering advanced protections like over-excitation limitation and voltage sensing loss. Its three-phase voltage sensing capability ensures all legs of the system are functioning correctly, a feature not always present in traditional voltage regulators that may only sense two lines.
| Model | Excitation Type | Voltage Regulation Accuracy (+/- %) | Nominal Excitation Current (A) | Sensing |
|---|---|---|---|---|
| R450T | SHUNT, AREP, PMG | 0.5 | 6 | 3-Phase |
| R450M | SHUNT, AREP, PMG | 0.5 | 6 | 1-Phase |
| R250 | SHUNT | 0.5 | 7 | 1-Phase (via strap ST3) |
| R438 | AREP, PMG | 0.5 | 5 | 1-Phase or 3-Phase (with R731 module) |
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
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Code map
^Z V B R │ │ │ └── Model: R450T │ │ └───── Make: Leroy-Somer (Nidec) │ └──────── Equipment: Automatic Voltage Regulator └─────────── System: Automation Spares