Overview
The R230 is an Automatic Voltage Regulator (AVR) that maintains the generator output voltage within precise limits by controlling the exciter field current. It continuously samples the generator output voltage and adjusts excitation to compensate for load changes, engine speed variations, and temperature drift.
Key Features
- ±0.5% Regulation — High-precision voltage control
- 4A Continuous Output — 75VDC max at 100VAC input
- 85-139VAC Sensing — Configurable for 50/60Hz via ST3 jumper
- 15Ω Min Field Resistance — Compatible with TAL/LSA small alternators
- Factory UF Protection — P3 preset at 48Hz (50Hz) or 58Hz (60Hz)
- 8A Slow-Blow Fuse — Built-in power supply protection
Technical Specifications
| Parameter | Value |
|---|---|
| Sensing Input | 85-139VAC (50/60Hz) |
| Output Voltage | Max 75VDC at 100VAC input |
| Output Current | Continuous 4A |
| Regulation Accuracy | ±0.5% |
| Frequency | 50/60 Hz (ST3 jumper selectable) |
| Min Field Resistance | 15 ohms |
| UF Protection | Factory-set P3 (48Hz/58Hz) |
| Fuse Protection | 8A slow-blow |
| Response Time | 500 ms |
Compatibility
- Leroy Somer Alternator Series
- Compatible with: Part.: R230
Why Choose ZenixPower
- Tight Voltage Regulation — <±1% RMS regulation ensures stable generator output under 0-100% load transients
- Fast Response — Sub-0.5 second recovery time prevents voltage dips during motor starting and load switching
- Dual Excitation Compatibility — Self-excited shunt or PMG-powered configurations clearly labeled for correct selection
- Built-in Protections — Under-frequency roll-off, over-excitation limiting, and soft-start ramp as standard
- Drop-In Replacement — Terminal layout and mounting dimensions match STAMFORD, Leroy-Somer, Marathon, and Mecc Alte OEM AVRs
- Pre-Calibrated — Each AVR ships with factory-default potentiometer settings for immediate plug-and-play operation
Specification Comparison
Compatible Generators Leroy Somer LSA 43-44 series 30-200kW.
Competitors R220 (3A) / R230 (4A) / R250 (5A).
| Parameter | R220 | R230 | R250 |
| Current | 3A | 4A | 5A |
| Regulation | ±0.5% | ±0.5% | ±0.5% |
| Price (with R731) | $90-140 | $100-160 | $110-190 |
Selection Advice Three models tiered by current. When uncertain about excitation requirements, the R230 is the safe choice. For confirmed large excitation needs, choose the R250.
