B&W (Babcock & Wilcox) SQ-300I (8700700-006C)
Model: SQ-300I (P/N: 8700700-006C)
Manufacturer: Babcock & Wilcox (B&W)
Type: Hybrid Automatic Voltage Controller (AVC)
Application: Electrostatic Precipitators (ESP)
Compatibility: Single-phase & 3-phase Transformer Rectifiers (T/R)
1. General Description
The B&W SQ-300I is a high-performance hybrid automatic voltage controller designed specifically for electrostatic precipitators (ESPs). It serves as the core control unit for the transformer-rectifier (T/R) sets, providing precise power regulation to optimize dust collection efficiency. A key feature is its ability to control both traditional single-phase and modern low-ripple three-phase power supplies via firmware configuration.
2. Key Specifications
• Power Supply: 100-240 VAC, 50/60 Hz
• Control Technology: SCR (Silicon Controlled Rectifier)
• Communication: Modbus TCP/IP
• User Interface: Color touchscreen HMI
• I/O: Configurable digital & analog I/O (optional)
• Diagnostics: Real-time monitoring & alarm analysis
• Phase Flexibility: Single/3-phase switchable via firmware
• Environment: Industrial, corrosion-resistant design
• Certifications: CE, MET, CMET
3. Core Features
• Hybrid Control: Universal support for single & 3-phase T/R sets.
• High Efficiency: Optimizes spark rate and power input for maximum ESP efficiency.
• Integrated Oscilloscope: Real-time waveform analysis for quality monitoring.
• Auto V-I Curve: One-touch generation and storage of voltage-current curves.
• Maintenance-Free: No potentiometers; fully electronic calibration.
• Upgrade Path: Protects investment; compatible with future T/R upgrades.
4. Typical Applications
• Coal-fired power plant electrostatic precipitators
• Industrial boiler emissions control
• Cement kiln dust collection systems
• Metal smelting & refining fume extraction
• Waste incineration plant emission control
• Retrofit & modernization of existing ESP systems
Babcock & Wilcox © SQ-300®i Hybrid AVC Controller
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