The ABB UNITROL 1000 3BHE014557R0003 is an automatic voltage regulator (AVR) and digital excitation control module designed for synchronous generators and industrial excitation systems. It provides precise generator voltage regulation, excitation current control, reactive power control, and power factor regulation for power generation applications.
The unit belongs to the ABB UNITROL 1000-15 series and is designed for brushless and static excitation systems used in power plants, marine generators, hydro generators, diesel generator sets, and industrial synchronous machines. The 3BHE014557R0003 configuration is the standard UNITROL 1000-15 version without synchronization or RDM options.
The UNITROL 1000 provides high-speed AVR response, programmable control functions, monitoring, protection features, and communication interfaces for integration with generator control systems. It is widely used as a replacement spare for existing ABB excitation systems.
📋 Product Datasheet
| Parameter |
Specification |
| Brand |
ABB |
| Model |
UNITROL 1000 |
| Series |
UNITROL 1000-15 Series |
| Product Name |
Automatic Voltage Regulator / Digital Excitation Controller |
| Part Number |
3BHE014557R0003 |
| Product Type |
Generator Excitation Control Module |
| Product Status |
Used / New Open Box / Surplus Stock |
| Application |
Generator AVR, Excitation System, Synchronous Machine Control |
| Excitation Output Current |
15 A Continuous |
| Excitation Overload Current |
20 A (4 min) / 30 A (10 s) |
| Voltage Regulation Accuracy |
<0.1% |
| Auxiliary Supply |
UAUX Maximum 25 W |
| Power Electronics Supply |
DC / 40–600 Hz |
| Measurement Frequency Range |
10–100 Hz |
| Communication Interface |
RS232 / RS485 / Ethernet (Configuration Dependent) |
| Control Functions |
AVR, Field Current Regulation, Reactive Power Control, Power Factor Control |
| Protection Functions |
Field Current Limiting, Voltage Monitoring, Machine Protection |
| Dimensions |
Approx. 245 × 190 × 142 mm |
| Weight |
Approx. 5 kg |
| Origin / Place of Origin |
Switzerland |
| Installation Type |
Generator Control Cabinet Mounted |
| Protection Class |
IP20 |
| Operating Temperature |
0°C to +60°C |
| Discontinued Status |
Legacy Model / Spare Replacement Available |
❓ Common Questions & Answers
Q: What is the main function of ABB UNITROL 1000 3BHE014557R0003?
A: It controls generator excitation and automatically adjusts field current to maintain stable generator output voltage.
Q: What type of equipment uses UNITROL 1000?
A: It is commonly used in synchronous generators, marine generator systems, hydroelectric generators, and industrial power generation equipment.
Q: Is UNITROL 1000 a PLC controller?
A: No. It is a dedicated automatic voltage regulator and excitation control device for generator applications.
Q: What is the difference between UNITROL 1000-15 and UNITROL 1010/1020?
A: UNITROL 1000-15 is an earlier excitation controller family, while UNITROL 1010 and 1020 are newer compact AVR platforms with updated I/O and communication features.
Q: What are common causes of UNITROL 1000 failure?
A: Common issues include unstable auxiliary power, excitation circuit faults, overheating, damaged communication interfaces, incorrect parameters, and aging electronic components.
Q: What should be checked before replacement?
A: Confirm the complete part number, excitation current rating, generator type, firmware version, wiring configuration, and existing AVR parameters.
Q: Can 3BHE014557R0003 replace another UNITROL model?
A: Replacement depends on excitation requirements, generator rating, control configuration, and available communication functions.
Q: Is ABB UNITROL 1000 still manufactured?
A: UNITROL 1000-15 is considered a legacy excitation controller, while ABB continues to provide newer UNITROL excitation solutions.
⭐ Recommended ABB Models
- ABB UNITROL 1000 3BHE014557R0003 – Automatic Voltage Regulator
- ABB UNITROL 1000 3BHE014557R0004 – AVR with Synchronization
- ABB UNITROL 1000 3BHE014557R0005 – AVR with RDM Function
- ABB UNITROL 1000 3BHE014557R0006 – AVR with Synchronization & RDM
- ABB UNITROL 1000-PM40 3BHE015411R0001 – Power Module
- ABB UNITROL 1010 3BHE035301R0003 – Digital AVR
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- ABB UNITROL 1020 3BHE030579R0007 – AVR with PSS
- ABB UNITROL 1005 3BHE043576R0011 – Compact AVR
- ABB UNITROL 1005 3BHE043576R0012 – Light AVR
- ABB UNITROL 6080 – Excitation System Controller
- ABB UNITROL F – Static Excitation System Controller
- ABB UNITROL 5000 – Generator Excitation System
- ABB UNITROL Excitation Control System – Synchronous Generator Control Platform
