Description
ABB 3BHB014827R0001
1. Basic Information
ABB 3BHB014827R0001 (LT2005-S/SP19) is a high-precision closed-loop Hall current transformer specially designed for high-power industrial transmission and power conversion systems. Adopting fluxgate closed-loop sensing principle, it features zero magnetic saturation, high linearity, low temperature drift and ultra-fast response. It accurately measures DC, AC and pulse current signals, widely used in ABB high-power inverters, wind power converters and industrial rectifier equipment for real-time current monitoring and closed-loop control.
2. Core Technical Specifications
2.1 Basic Parameters
- Model: 3BHB014827R0001 (LT2005-S/SP19)
- Type: Closed-loop Hall High-precision Current Transformer
- Rated Primary Current: 2000A
- Working Power: ±15V DC
- Installation: Busbar through-hole mounting
- Protection Class: IP20
- Core Feature: Zero magnetic saturation, high linearity, fast response
2.2 Electrical Performance
- Measurable Current Type: DC, AC, high-frequency pulse, fluctuating current
- Response Speed: Microsecond-level dynamic response
- Temperature Drift: Ultra-low temperature drift for stable precision
- Isolation Performance: Complete electrical isolation between primary and secondary sides
- Bandwidth: Wide frequency response for complex current signals
2.3 Environmental Parameters
- Operating Temperature: -40℃～+85℃
- Storage Temperature: -40℃～+90℃
- Humidity: 5%～95%RH (Non-condensing)
- Industrial Performance: Vibration resistance, EMC anti-interference
3. Main Features
- High-precision Large-current Sampling: Accurate measurement up to 2000A with excellent linearity and no magnetic saturation distortion.
- Multi-signal Compatibility: Adapts to DC, AC and high-frequency pulse current, suitable for nonlinear load working conditions.
- Ultra-fast Dynamic Response: Microsecond-level response tracks instantaneous current fluctuation for rapid system closed-loop adjustment.
- Complete Electrical Isolation: Isolates high-power primary circuit and weak-signal secondary circuit to protect control system.
- Wide-temperature Stability: Low temperature drift design ensures stable accuracy under extreme temperature conditions.
- No Magnetic Saturation Defect: Closed-loop zero-flux structure avoids measurement distortion under impulse current.
- ABB System Perfect Adaptation: Original matching device for ABB high-power transmission equipment for plug-and-play replacement.
- Harsh Environment Durability: Reinforced packaging for long-term 7×24h stable operation in heavy industrial scenarios.
4. Working Principle
- Magnetic Field Induction: The busbar current generates a proportional magnetic field, which is sensed by the internal Hall element.
- Closed-loop Flux Compensation: The compensation coil generates reverse magnetic flux to maintain zero-flux balance and eliminate measurement errors.
- Precision Signal Conversion: The weak Hall signal is amplified, filtered and calibrated into standard linear analog output.
- Isolated Signal Transmission: Secondary weak signal is electrically isolated to avoid high-voltage interference.
- System Closed-loop Control: The main control system performs current regulation, power calculation and overload protection based on sampled data.
- Real-time Cycle Update: High-speed continuous sampling ensures dynamic tracking of load current changes.
5. Typical Applications
5.1 High-power Industrial Drive System
Used for current sampling and closed-loop control of ABB high-power inverters and rectifiers to ensure stable motor speed regulation and overload protection.
5.2 Wind Power Converter System
Realizes grid-connected power regulation and overcurrent protection for wind turbine converters, adapting to new energy power generation working conditions.
5.3 Power Rectification & Distribution System
Completes high-precision current measurement and condition monitoring for industrial rectification equipment and DC power distribution systems.
5.4 Heavy Industry Automation Equipment
Adapts to harsh working conditions such as metallurgy and mining, providing accurate current data for process control and fault protection.
5.5 ABB Equipment Maintenance & Replacement
Direct replacement for aging transformers with sampling drift and response failure, compatible with original wiring and control logic.
