The GE IS200FHVBG1ABA High Voltage Gate Input Board acts as a specialized signal interface and
protection hub for GE’s EX2100 excitation control system, designed to safely receive, condition, and
transmit high-voltage gate signals from power electronics (e.g., SCRs, IGBTs) in generator excitation
circuits. Its core function is to bridge the gap between high-voltage power stages (typically 1kV–10kV)
and low-voltage control logic (24V DC in EX2100), ensuring reliable signal transfer while isolating
hazardous high voltages from sensitive control components. The board processes differential gate
drive signals—used to trigger or shut down power semiconductors—with built-in high-voltage
isolation (10kV AC), EMI/RFI filtering, and surge suppression (up to 20kA), preventing noise-induced
false triggers or damage from voltage transients (common in industrial power environments). It also
monitors gate signal integrity (e.g., detecting open circuits or signal degradation) and transmits real-
time diagnostic data (e.g., overvoltage faults, signal loss) to the EX2100 controller via the EISB (Exciter
Internal Serial Bus). Built with ruggedized components, an IPC-CC-830B Class 3 conformal coating,
and a 3U Eurocard form factor, it withstands harsh conditions (temperature swings, vibration, dust) in
power plants or industrial facilities, supports hot-swapping in redundant setups, and integrates
seamlessly with EX2100 racks to maintain continuous excitation system operation.
Technical Specifications
| Parameter Category | Details |
| Core Function | Safely receives/conditions high-voltage gate signals from power electronics; isolates high voltage from control logic; provides signal monitoring and diagnostics for EX2100 excitation systems. |
| Mechanical Specifications | - Form Factor: Single-slot 3U Eurocard (compatible with EX2100 standard 19-inch racks) - Dimensions: 100mm (W) × 150mm (H) × 32mm (D) - Material: FR4 PCB with IPC-CC-830B Class 3 conformal coating; high-voltage-rated terminal blocks - Mounting: Screw-fixed to EX2100 rack (torque requirement: 2.5 Nm) |
| Input Signal Specifications | - Input Type: Differential high-voltage gate signals (for SCR/IGBT drive) - Input Voltage Range: 0–10kV AC (peak) - Input Current: 1mA–10mA (signal loop) - Filtering: 3rd-order low-pass filter (cutoff frequency: 1kHz) to reduce EMI/RFI noise |
| Isolation Performance | - High-Voltage to Logic Isolation: 10kV AC (1-minute withstand, per IEC 60664-1) - Channel-to-Channel Isolation: 5kV AC (prevents cross-talk between gate signals) - Isolation Type: Galvanic isolation (optical coupling for signal transfer) |
| Output Signals | - Output Type: Low-voltage logic signals (compatible with EX2100 controller) - Output Voltage: 0–5V DC (digital status) / 0–10V DC (analog signal level) - Output Impedance: 50Ω (for stable signal transmission to EX2100) |
| Protection Features | - Surge Protection: MOV-based (20kA, 8/20µs waveform) on input terminals - Overvoltage Protection: Clamps input voltage to 11kV AC (prevents component damage) - Overcurrent Protection: 15mA resettable fuse per input channel - Thermal Protection: Auto-shutdown at 85°C (recovers at 70°C) |
| Communication Interface | - Protocol: GE EISB (Exciter Internal Serial Bus) - Data Rate: 10 Mbps (full-duplex) - Transmitted Data: Gate signal status, isolation integrity, fault codes (overvoltage/overcurrent), module temperature |
| Power Requirements | - Supply Voltage: 24V DC ±10% (from EX2100 backplane) - Power Consumption: <8W (typical); <12W (max, all channels active) |
| Environmental Ratings | - Operating Temperature: -40°C to 70°C (-40°F to 158°F) - Storage Temperature: -55°C to 85°C (-67°F to 185°F) - Relative Humidity: 5%–95% (non-condensing) - Vibration Resistance: IEC 60068-2-6 (5g acceleration, 10–500Hz) - Shock Resistance: IEC 60068-2-27 (50g peak, 11ms duration) |
| Safety & Compliance | - Certifications: UL 61010-1 (industrial safety), IEC 60664-1 (insulation coordination), CE - Voltage Rating: CAT III (per IEC 61010-1, for high-voltage industrial environments) |
| Indicators & Diagnostics | - LEDs: 1 power LED (green, 24V DC present); 8 input channel LEDs (green = valid signal, red = fault); 1 isolation status LED (yellow = isolation intact); 1 fault LED (red = overvoltage/overcurrent) - Fault Logging: Stores last 15 fault events (time-stamped, accessible via EISB) |
| Compatibility | - System: Exclusive to GE EX2100 excitation control system - Power Electronics: Compatible with GE SCR modules (e.g., 531X128G01), IGBT drives (e.g., 531X130G01) - Supporting Modules: IS200DSPX (controller), IS200EXHSG3AEC (relay driver), IS200ERBPG1A (backplane) |
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