GE IS200EGPAG1BEC Product Introduction
1. Product Description
The GE IS200EGPAG1BEC is a high-performance Gate Pulse Amplifier (GPA) module engineered for GE’s EX2100 excitation control system, a core platform in industrial power management applications . As a critical interface between the control logic layer and the power bridge, this module is specifically designed to regulate Silicon Controlled Rectifiers (SCRs) by amplifying low-level gate pulse commands from the system’s control board (e.g., ESEL board) to drive-level signals .
It finds primary application in power generation, oil and gas processing, and marine propulsion systems, where it enables precise control of turbine excitation circuits and power conversion units . By providing galvanic isolation between low-voltage control circuits and high-voltage power bridges, it mitigates cross-interference risks and ensures compliance with industrial safety standards for mission-critical equipment.
2. Product Parameters
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Parameter
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Specification
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Product Type
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Gate Pulse Amplifier (GPA) Module
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Target System
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GE EX2100 Excitation Control Series
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Input Signal
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Low-level gate pulses from control logic (ESEL board-compatible)
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Output Signal
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Amplified drive pulses for SCRs
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Operating Voltage
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24V DC – 48V DC
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Output Current Capacity
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Up to several amperes (sufficient for SCR gating)
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Isolation Rating
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Galvanic isolation between control and power stages
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Configurability
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5 on-board hardware jumpers for system adaptation
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Status Indicators
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Dual LEDs (Green: Normal Operation; Red: Fault/Alarm)
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Temperature Thresholds
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Alarm: 170°F (76.7°C); Trip: 190°F (87.8°C)
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Weight
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1 lb 9 oz (≈0.70 kg)
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Operating Temperature
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-40°C to +70°C (industrial-grade range)
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Storage Temperature
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-55°C to +85°C
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Protection Features
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Overcurrent, short-circuit, and overtemperature protection
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Compliance
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IEC 61800-3 (EMC for power drive systems)
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3. Product Specifications
3.1 Hardware Architecture
- Signal Processing Chain: Integrates a precision operational amplifier (op-amp) array and pulse shaping circuit to convert 5V–12V logic pulses into 24V–48V drive signals with <1μs rise time, ensuring SCR switching accuracy .
- Isolation Design: Incorporates optocouplers and isolated DC/DC converters to achieve ≥2.5kVrms isolation between control and output stages, eliminating ground loops in high-noise industrial environments.
- Configurable Interface: 5 on-board jumpers allow customization of pulse width, current limiting, and feedback threshold parameters to match SCR models (e.g., 50A–1000A ratings) .
3.2 Functional Capabilities
- Pulse Amplification: Scales low-amplitude control signals to meet SCR gate trigger requirements, with linearity error <±1% to ensure consistent switching behavior.
- Real-Time Monitoring: Embeds sensors for airflow, temperature, and conduction feedback, enabling proactive fault detection (e.g., SCR misfiring, overheating) .
- Fault Response: Automatically suppresses output pulses and activates the red LED upon detecting overtemperature, overcurrent, or open-circuit faults, triggering system-level alarms via the EX2100’s PLC .
3.3 Mechanical & Environmental Compliance
- Form Factor: Standard 3U rack-mount compatible with GE EX2100 chassis.
- Environmental Durability: Withstands vibration (10–500Hz, 0.5g) and shock (10g, 11ms half-sine) per IEC 60068-2, suitable for turbine enclosures and offshore platforms .
4. Product Features
4.1 Precision SCR Control
Delivers amplified pulses with tight timing tolerance (<50ns jitter), ensuring synchronized SCR firing in three-phase power bridges. This precision minimizes harmonic distortion in excitation currents, optimizing turbine efficiency by up to 3% .
4.2 Robust System Integration
Seamlessly interfaces with GE’s EX2100 control logic and ESEL command boards, eliminating the need for external signal converters. The 5-jumper configuration supports retrofitting into legacy systems with varying SCR ratings .
4.3 Proactive Diagnostics
Integrated temperature and conduction monitoring reduces unplanned downtime by 40% compared to non-monitored amplifiers. The dual-LED indicator enables on-site troubleshooting without specialized tools .
4.4 Industrial-Grade Reliability
Constructed with military-spec components (e.g., high-temperature capacitors, ruggedized connectors) and rated for 100,000+ hours MTBF. Its repairable design extends service life and lowers total cost of ownership .
4.5 Safety-Centric Design
Galvanic isolation and overcurrent protection prevent high-voltage transients from propagating to control circuits, complying with IEEE C37.90.1 for excitation system safety .
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