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3A99101G02

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3A99101G02
June 05, 2026

3A99101G02

Part Number: 3A99101G02, upgraded revised QSR LVDT Servo Control Card under Westinghouse WDPF Q-Line turbine control series, upgraded successor version of 3A99101G01 original standard board, manufactured by Westinghouse/Emerson USA for steam turbine EH governing system VME rack installation. Suffix G denotes standard industrial PCB assembly; G02 is revised optimized edition for improved circuit stability and anti-interference performance, fully pin-to-pin compatible with G01 for direct field replacement without cabinet wiring modification. Widely applied on coal-fired & nuclear power unit turbine control cabinet. Original OEM production discontinued globally; available stock includes pre-tested refurbished modules and dismantled original used spare parts.

Description

1. Product Overview

Part Number: 3A99101G02, upgraded revised QSR LVDT Servo Control Card under Westinghouse WDPF Q-Line turbine control series, upgraded successor version of 3A99101G01 original standard board, manufactured by Westinghouse/Emerson USA for steam turbine EH governing system VME rack installation. Suffix G denotes standard industrial PCB assembly; G02 is revised optimized edition for improved circuit stability and anti-interference performance, fully pin-to-pin compatible with G01 for direct field replacement without cabinet wiring modification. Widely applied on coal-fired & nuclear power unit turbine control cabinet. Original OEM production discontinued globally; available stock includes pre-tested refurbished modules and dismantled original used spare parts.

2. Functional & Channel Configuration

  • 4 independent LVDT acquisition channels: Designed for 2AC series LVDT displacement transducers, collects valve position, actuator stroke feedback signals of turbine governing & intercept valves, same channel quantity as G01 version.

  • Upgraded closed-loop servo drive circuit: Optimized internal PID control algorithm compared with G01, improved drift suppression and low-frequency signal filtering, enhances control precision for hydraulic servo actuator position regulation.

  • Standard VME backplane bus interface: Communicates with DPU main controller via chassis backboard for parameter download, real-time feedback data upload and fault diagnostic alarm transmission; reserved onboard test terminal for field offline calibration.

  • Matching peripheral modules: Works together with QRS(3A99108G01), QRF(3A99109G01), QRD(3A99114Gxx) signal conditioning boards to build complete turbine servo control group.

3. Electrical & Environmental Specifications

  • Power input: +5VDC, ±12VDC powered by control rack backplane power module.

  • Operating temperature: 0℃ ~ +55℃ (continuous cabinet operation); storage temperature: -40℃ ~ +85℃; relative humidity: 5%~95%RH non-condensing, no corrosive gas environment required.

  • Enhanced EMI shielding: Optimized PCB layout and added partial filter components versus G01, stronger anti-electromagnetic interference against cabinet contactors, inverters and power supply noise, compliant with CE industrial control standards.

4. Application Range

Core spare part for WDPF DCS turbine hydraulic governing system; used for unit regular maintenance, overhaul component replacement and old DCS system retrofitting upgrade. Direct interchangeable with 3A99101G01 on-site without modification to existing control logic or cabinet slots.

5. Supply & Delivery Terms

Brand new original factory stock is unavailable worldwide. In-stock items are fully tested refurbished boards with warranty and inspected second-hand original spares. Standard delivery lead time: 2~3 working weeks; urgent expedited shipment via DHL/UPS/FedEx global courier available. Professional board repair service supported, standard repair cycle 2~4 weeks with rush maintenance option for emergency site breakdown.


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