Introduction to ABB PPC905AE101 3BHE014070R01014
The ABB PPC905AE101 (order number: 3BHE014070R01014) is a high-precision excitation control module, celebrated as the “magnetic field regulation core” for synchronous generators in power generation systems. As a key component of ABB’s Unitrol® series excitation systems, it integrates advanced PID control algorithms, multi-channel signal processing, and dual-redundancy design, specializing in regulating the generator’s excitation current to maintain stable terminal voltage and optimize reactive power distribution. This module is widely applied in thermal power plants, hydropower stations, and industrial self-owned generators, effectively enhancing the generator’s grid-connection stability and anti-interference capability. Its industrial-grade design features 2500Vrms galvanic isolation between analog and digital circuits, resisting strong electromagnetic interference from generator sets, while the operating temperature range of -25°C to +70°C adapts to harsh on-site environments.
3BHE014070R01014 Key Technical Specifications
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Device Type: High-precision excitation control module (Unitrol® series supporting component)
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Core Functions: Generator terminal voltage regulation, reactive power control, excitation current limiting, fault protection
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Compatible Systems: ABB Unitrol 6000 excitation system, 800xA DCS, Symphony®Plus control platform
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Control Performance: Voltage regulation accuracy ±0.2% of rated value; response time ≤ 10ms for grid disturbance
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Input/Output Configuration: 8-channel analog input (4-20mA); 6-channel analog output (0-10V/4-20mA); 16 digital I/O points
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Power Supply: 24V DC (redundant input); input range 18-36V DC; typical power consumption ≤ 25W
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Communication Interface: RS485, Modbus RTU; supports IEC 61850 protocol for substation integration
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Redundancy Feature: Dual-module hot standby; automatic switchover time < 5ms without disturbance
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Operating Environment: Temperature -25°C to +70°C; humidity 5-95% (non-condensing); storage temp -40°C to +85°C
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Physical Specifications: 180mm × 120mm × 50mm; weight ~1.5kg; rack-mounted (compatible with Unitrol chassis)
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Protection Features: Overexcitation, underexcitation protection; overcurrent, overtemperature alarm; voltage loss detection
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Certifications: CE, UL compliant; RoHS certified; meets IEC 61131-3 and IEEE 421.5 standards
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