Description
🔹 Product Introduction
The Basler Electric SR4A2B06B3A is a static voltage regulator designed for excitation and voltage control of synchronous generator systems. The SR4A series regulates generator output voltage by sensing generator voltage and controlling the excitation current supplied to the generator or exciter field.
The SR4A is intended for industrial and utility power-generation applications, including conventional brush and brushless synchronous generators. It supports generator voltage regulation, excitation control, and parallel-operation functions when correctly configured for the associated generating system.
🔹 Key Features
- Basler Electric SR4A series static voltage regulator
- Model SR4A2B06B3A
- Designed for synchronous generator excitation systems
- Suitable for brush and brushless generator applications
- AC generator-voltage sensing
- Controls generator excitation to maintain regulated output voltage
- Supports parallel-operation and reactive droop compensation functions
- Front-panel adjustment provisions
- Suitable for industrial generator and power-generation equipment
- Useful as a replacement or maintenance spare for existing SR4A installations
📋 Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Basler Electric |
| Model | SR4A2B06B3A |
| Series | SR4A |
| Product Name | Static Voltage Regulator |
| Product Type | Generator Voltage Regulator / Excitation Controller |
| Application | Synchronous Generator Excitation |
| Sensing | AC Generator Voltage |
| Sensing Configuration | 1-phase or 3-phase, depending on system wiring |
| Nominal Sensing Frequencies | 50/60 Hz |
| Voltage Regulation | Generator excitation control |
| Condition | Used / Pre-Owned |
⚙️ Functional Applications
The SR4A is used in generator excitation systems where generator terminal voltage must be monitored and maintained at the required operating level.
Typical applications include:
- Diesel generator sets
- Gas engine generator sets
- Steam turbine generators
- Hydroelectric generating equipment
- Industrial standby generators
- Prime-power generator systems
- Brush-type excitation systems
- Brushless excitation systems
- Generator paralleling systems
- Power-generation control panels
The regulator can also be incorporated into systems using reactive droop or cross-current compensation for generator parallel operation. Basler’s SR4A documentation specifically includes parallel compensation and reactive differential compensation functions.
🔧 Installation & Integration
Before replacing an existing regulator, verify the complete model code and generator excitation requirements. The SR4A2B06B3A should not be substituted solely on the basis of the SR4A family name because sensing voltage, excitation requirements, wiring, and configuration can differ between model variants.
Recommended installation checks include:
- Confirm the regulator model and existing wiring configuration.
- Verify generator sensing voltage and frequency.
- Confirm the exciter-field voltage and current requirements.
- Inspect terminal connections for corrosion, looseness, or heat damage.
- Verify any CT connections used for parallel or reactive compensation.
- Confirm the regulator mounting and grounding arrangement.
- Check the generator control circuit before energizing the regulator.
- Perform controlled voltage-build-up and output-voltage checks.
- Verify stable operation at no-load before applying generator load.
- Confirm voltage regulation and parallel-operation functions where applicable.
⚠️ Installation and testing should be performed by qualified generator or electrical-control personnel. The SR4A operates as part of a generator excitation system and incorrect field wiring or sensing connections can cause equipment damage.
🛠️ Maintenance Recommendations
- Keep the regulator and surrounding cabinet clean and dry.
- Inspect terminals and wiring during scheduled generator maintenance.
- Check for loose connections, oxidation, overheating, or damaged insulation.
- Verify generator-voltage sensing wiring before commissioning.
- Inspect excitation-system wiring and field connections.
- Monitor generator voltage stability during normal operation.
- Check parallel-compensation circuits when multiple generators operate in parallel.
- Store spare regulators in a clean, dry environment with suitable protection from dust and moisture.
- When replacing a regulator, record the original adjustment positions before removal whenever practical.
❓ FAQ
Q1: What is the full model number?
A: The model is SR4A2B06B3A.
Q2: What is the function of the Basler SR4A?
A: It regulates generator voltage by controlling excitation supplied to the generator or exciter field.
Q3: What type of generators can use the SR4A?
A: The SR4A is designed for synchronous generators, including both brush and brushless excitation arrangements.
Q4: Can the SR4A be used for generator paralleling?
A: Yes. The SR4A family provides provisions for parallel compensation and reactive droop compensation when configured appropriately.
Q5: Does the SR4A directly control generator output voltage?
A: It controls the excitation field, which in turn controls the generator’s terminal voltage.
Q6: Is this the same as a modern digital AVR?
A: No. The SR4A is a legacy static voltage regulator design. It should be matched to the existing excitation system rather than treated as a universal replacement for modern digital AVRs.
Q7: What should be checked before purchasing a replacement?
A: Verify the complete model number, generator sensing voltage, frequency, excitation-field requirements, wiring, and compensation configuration.
Q8: Is the SR4A suitable for industrial generator maintenance?
A: Yes. It can serve as a replacement or spare for compatible Basler SR4A generator excitation systems.
Q9: What is the condition of this listing?
A: The referenced listing is Used / Pre-Owned.
Q10: Can another SR4A model be substituted directly?
A: Not automatically. Different SR4A model codes can have different sensing and power configurations, so the complete model designation must be checked before substitution.
🔹 Recommended Basler Electric Related Models
- Basler SR4A Static Voltage Regulator
- Basler SR8A Static Voltage Regulator
- Basler SR6A Static Voltage Regulator
- Basler SR9A Static Voltage Regulator
- Basler SSR Static Voltage Regulator
- Basler DECS-250 Digital Excitation Control System
- Basler DECS-200 Digital Excitation Control System
- Basler DECS-100 Digital Excitation Control System
- Basler AVC63-12 Automatic Voltage Regulator
- Basler AVC125-10 Automatic Voltage Regulator
🔹 Product Summary
The Basler Electric SR4A2B06B3A is a legacy static voltage regulator for synchronous generator excitation systems. It provides generator-voltage sensing and excitation control and can be used in industrial generator, power-generation, and generator-paralleling applications when its electrical configuration matches the existing system. For replacement projects, the complete model code and generator excitation parameters should always be verified before installation.
