Description
3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Continuous Excitation Current | 15 A DC at 55°C |
| Overload Current (10 sec) | 38 A DC at 55°C |
| Power Electronic Input (AC) | 16 to 250 V |
| Power Electronic Input (DC) | 0 to 250 V |
| Machine Voltage Measurement | Up to 500 V (1-, 2- or 3-phase) |
| Voltage Regulation Accuracy | ±0.2% at 25°C |
| AVR Response Time | < 20 ms (3-phase measurement) |
| Ambient Temperature Range | -40°C to +70°C (typical for series) |
| Communication Interfaces | Modbus, Ethernet options available |
| Weight | Approx. 5 kg |
| Protection Class | IP20 |
4. Product Introduction
The ABB UNITROL1000-15 is a compact automatic voltage regulator (AVR) designed for reliable excitation control of synchronous generators and motors. It handles machines from 100 kVA up to 80 MVA in industrial power generation, backup systems, and process applications.
This unit delivers precise voltage control with fast response using proven IGBT technology. Field engineers choose it for its straightforward commissioning via CMT1000 software, robust performance under load changes, and compatibility with existing UNITROL installations. It reduces commissioning time and supports grid code requirements when properly configured.
- UNITROL1000-15
- UNITROL1000-15
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No LEDs on power-up | Power supply failure | ❌ Low | Measure input voltage at terminals with multimeter (16-250V AC/DC) | Verify supply and fuses first; check wiring |
| Unstable voltage output | Excitation current limit or feedback issue | ✅ High | Monitor output current and machine voltage via CMT1000 tool | Check field connections and PT/CT signals |
| Communication loss | Protocol mismatch or cable fault | ✅ Medium | Ping test via Modbus/Ethernet; verify firmware version | Confirm settings match master controller |
| Overheating | Insufficient cooling or overload | ✅ High | Measure ambient temp and heatsink temperature | Ensure proper ventilation; check load calculations |
| ERR indicator active | Internal fault or parameter error | ✅ High | Read diagnostic buffer in CMT1000 software | Download logs and contact support with error code |
If diagnostics point to the AVR but issues persist, provide photos of installation, wiring diagrams, and CMT1000 logs for faster support.
6. Frequently Asked Questions (FAQ)
Is the UNITROL1000-15 hot-swappable? No. Kill power to the excitation system first. Hot-swapping risks backplane damage or unsafe generator operation. Always follow lockout/tagout procedures.
What machines does this AVR support? It works with synchronous generators and motors from roughly 100 kVA to 80 MVA. Verify exact field current requirements against your machine datasheet before ordering.
Is this New Original or refurbished? This listing is for New Original / New Surplus stock. Units come with full traceability from ABB channels and have passed our inbound inspection and functional testing.
Will it work as a direct replacement for older UNITROL units? Often yes, but check firmware revision and terminal block compatibility. Document your existing DIP switches or parameters before removal. Minor wiring differences exist between revisions.
How do I commission it? Use ABB’s CMT1000 tool for setup and autotuning. Connect via the front port, load your parameters, and run the guided startup sequence. Most field techs complete basic commissioning in under an hour.
What is the warranty? 1-year warranty from shipment date on New Original units. Coverage includes functional defects under normal operation. Extended options available on request.
Why is surplus stock often more available than new factory orders? Many plants keep spares on hand. Our tested surplus units offer immediate availability versus factory lead times that can stretch months for certain configurations. All units undergo full functional testing on our simulation rigs. Test reports available upon request.
Start Chat
