• Part No: P70035W82V
• Brand: ALSTOM (GE Grid Solutions successor)

• Category: Excitation System Control PCBP70035W82V is a dedicated plug-in circuit board applied within ALSTOM UNITROL series automatic voltage regulator excitation system. It processes analogue measurement signals, executes excitation control logic, generates trigger pulses for thyristor rectifiers, and implements system monitoring and protection functions. The board communicates with main processor units via internal backplane bus to maintain stable generator terminal voltage under varying load and grid conditions. Adopting industrial-grade electronic components and built-in surge suppression circuits, it serves as an essential spare part for excitation cubicles of thermal power plants, hydropower stations and captive power facilities.

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Core Features

• High-speed signal sampling and conditioning for generator voltage and current feedback
• Precision pulse generation to control thyristor rectifier firing angle
• Integrated hardware protection logic for excitation system fault monitoring
• Internal backplane bus interface for data exchange with other control modules
• Reinforced PCB layout with ESD and transient overvoltage protection
• Standard rack-mounted plug-in design supporting quick field replacement

• Passed EMC, vibration and wide-range thermal cycling reliability qualification

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Technical Specifications

• Operating Supply: 24 VDC
• Operating Temperature: -10°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C
• Form Factor: Rack plug-in printed circuit board

• Protection Class: IP20 when installed inside control cabinet

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Compatibility & Application

• Compatible with ALSTOM legacy UNITROL excitation and AVR platforms
• Widely deployed in thermal power plants, hydropower stations and industrial power generation facilities
• Used for synchronous generator automatic voltage regulation and excitation control loop processing