Overview
The DSR 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
- RS485 & RS232 & USB — Full digital communication suite for remote monitoring
- USB Programmable — On-site parameter configuration via PC software
- ±0.5% Digital Regulation — Microprocessor-based precision control
- 6A Continuous Output — 63VDC max, 10A peak for demanding loads
- 170-270VAC Sensing — 1 or 3 phase selectable
- 12-72Hz Frequency — Variable-speed capable
- Self/PMG Excitation — Dual excitation compatibility
Technical Specifications
| Parameter | Value |
|---|---|
| Communication | RS485, RS232, USB programmable |
| Sensing Input | 170-270VAC, 1 or 3 phase |
| Output Voltage | Max 63VDC |
| Output Current | Continuous 6A, Peak 10A |
| Regulation Accuracy | <±0.5% |
| Frequency | 12-72 Hz |
| Excitation Type | Self-excited / PMG selectable |
| Programming | USB interface for parameter configuration |
Compatibility
- Mecc Alte Alternator Series
- Compatible with: Part.: DSR
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 Mecc Alte digital upgrade requirements.
Competitors DSR with communication (RS485/RS232/USB), DER1 without.
| Parameter | DER1 | DSR | SR7 |
| Control | Digital | Digital | Analog |
| Communication | None | RS485/RS232/USB | None |
| Price | $80-130 | $150-250 | $40-60 |
Selection Advice The DSR is Mecc Alte’s high-performance model with unique communication interfaces for remote voltage adjustment and fault diagnostics — suitable for smart power stations requiring SCADA access. For applications without remote communication needs, the DER1 is sufficient.
