1. Basic Information

• Brand/Manufacturer: General Electric (GE)

• Model: DS200FGPAG1AHD

• Series: GE LS2100 Static Starter Control, Speedtronic Mark VI Turbine Control System, LCI (Load Commutated Inverter) Gate Pulse Amplifier Board

• Product Type: SCR (Silicon Controlled Rectifier) Gate Drive / Pulse Amplification & Status Monitoring Board

• Core Purpose: Used in LCI static starting systems for gas turbines and combined-cycle power plants, amplifying control pulses, driving SCR bridge arms, monitoring thyristor status, and ensuring reliable motor/turbine starting control.

2. Core Functions

1. Gate Pulse Amplification & Driving: Amplifies and shapes control signals to output sufficient power for driving SCR gates, controlling the turn-on/turn-off of three-phase rectifier bridges; one board drives one phase of the bridge arm.

2. SCR Status Monitoring: Collects and summarizes SCR voltage/conduction status, supports up to 12 FHVA unit signals, and feeds back data to the LCI controller via fiber-optic links for fault diagnosis and protection.

3. On-Board Power Conversion: Converts input AC voltage to DC power required for gate drive and status monitoring, supporting a wide AC input range.

4. Fiber-Optic Communication Isolation: 15 fiber-optic connectors (1 transmitter, 14 receivers) for electrical isolation between control signals and high-voltage power circuits, providing strong anti-electromagnetic interference (EMI) performance and system safety.

5. Fault Protection & Diagnostics: Built-in over-voltage, over-current, and short-circuit protection; supports channel status monitoring and fault location for industrial-grade reliable operation.

3. Hardware Specifications

• Core Circuits: 2 independent gate drive circuits, SCR status monitoring circuit, switching power supply circuit.

• Fiber-Optic Interfaces: 15 fiber-optic connectors (1 fiber transmitter, 14 fiber receivers) for signal transmission and isolation.

• Input Power: 90–260VAC (nominal 115/230VAC), 47–63Hz, max 350VA.

• Drive Output: ±25V, ±10A, meeting SCR gate drive power requirements.

• Operating Environment: -40°C to +85°C, non-condensing, industrial-grade anti-vibration and anti-EMI design.

• Physical Dimensions: Approx. 170mm × 105mm × 32mm, weight approx. 0.48kg.

• Mounting: Standard control cabinet backplane mounting, compatible with LS2100/Mark VI system racks.

4. Product Features

• 3-in-1 Integrated Design: Integrates gate drive, status monitoring, and power conversion on a single board, simplifying system architecture, reducing wiring, and improving reliability.

• High-Voltage Isolated Communication: Full fiber-optic signal transmission completely isolates the control side from the high-voltage power side, eliminating EMI risks and enhancing safety.

• High-Power Drive Capability: High-current, high-voltage pulse output for reliable driving of high-power SCRs, suitable for large gas turbine starting systems.

• Industrial-Grade High Reliability: Wide-temperature, three-proof, anti-vibration design for long-term stable operation in harsh conditions such as power plants and oil & gas facilities.

• Comprehensive Diagnostics & Protection: Real-time SCR status monitoring, fast fault location, supporting system redundancy and safe shutdown logic.

5. Typical Applications

• GE LS2100 LCI static starting systems for heavy-duty gas turbines (7F/9F class) and large synchronous motor soft starting.

• Combined-cycle power plants, captive power plants, petrochemical/metallurgical large motor variable-frequency starting control.

• Gate drive and status monitoring for thyristor rectifier/inverter equipment and high-voltage high-power power electronic devices.

• Supporting the Mark VI turbine control system to ensure safe control throughout gas turbine starting, grid connection, and operation.