Description
DS200GSIAG1B Product Overview
The DS200GSIAG1B is a “personality” printed-circuit board that installs inside GE Mark V Speedtronic and EX2000 medium-voltage drive cubicles. It serves two related functions:
The DS200GSIAG1B is a “personality” printed-circuit board that installs inside GE Mark V Speedtronic and EX2000 medium-voltage drive cubicles. It serves two related functions:
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DC-bus regeneration – when the motor acts as a generator (e.g., during turbine-compressor deceleration), the board routes excess DC energy back to the line-side converter or to an external braking resistor, preventing bus over-voltage.
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IGBT snubber network – RC/RCD networks clamp dv/dt spikes generated during fast IGBT turn-off, extending semiconductor life and reducing EMI radiated into the control backplane.
The card is passive (no microprocessor) but houses six jumper banks and multiple trim-pots (PL, NL, U, V, W, PR, NR) that allow field technicians to fine-tune snubber damping or regeneration thresholds to match the installed IGBT module characteristics. Three 40-pin and two 16-pin keyed headers route gate-drive signals, fault feedback, and DC-bus voltage sampling between the power stack and the main control card. A side-mounted green LED gives instant visual confirmation of board activity—visible through the cabinet door without opening the panel.
Because the board is conformal-coated and rated -40 … +85 °C, it survives the heat, humidity, and vibration common in turbine-compartment or off-shore skids without additional HVAC.
Technical Specifications
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Model Number: DS200GSIAG1B
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Manufacturer: General Electric
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Product Type: Common DC Bus Regenerative / Interface Board
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Function: DC-bus regeneration + dv/dt snubber for IGBT power stacks
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Connectors: 3 × 40-pin Molex headers + 2 × 16-pin headers (keyed)
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Trim Controls: 6 jumper banks + multi-turn pots (PL, NL, U, V, W, PR, NR) for damping/regen tuning
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Snubber Elements: Foil capacitors & metal-film resistors (RC/RCD network)
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Working Voltage: 1500 VDC typical (Mark V IGBT stack)
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Isolation: Basic insulation; user must maintain IGBT safety clearances
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Logic Supply: 24 VDC derived from Mark V backplane
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Status LED: Green, side-mounted for quick visual health check
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Weight: ≈ 2.5 kg (5.5 lb)
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Temperature: –40 … +85 °C storage; 0–60 °C operational (drive ambient)
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Coating: Standard GE Mark V conformal coating for humidity & contamination resistance
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Certifications: CE, UL, RoHS, marine-environment ready
DS200DSFBG2A
Core Features & Customer Value
Regeneration + snubber in one card – Eliminates external braking resistors and RC networks, saving panel space and wiring time while ensuring IGBT dv/dt compliance
Regeneration + snubber in one card – Eliminates external braking resistors and RC networks, saving panel space and wiring time while ensuring IGBT dv/dt compliance
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Field-adjustable damping – Multi-turn pots let technicians fine-tune overshoot for different IGBT module types without removing the card, reducing commissioning time
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High-density keyed headers – Standard Mark V 40-pin and 16-pin connectors route gate-drive, DC-bus, and fault feedback in one plug, reducing wiring errors and vibration-related failures
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Side-mount status LED – Green indicator visible through cabinet door gives instant board-health confirmation, shortening mean-time-to-repair during night-shift call-outs
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Zone-2 / marine certified – Conformal-coated PCB survives salt, humidity, and conductive dust common in off-shore compressor drives without additional enclosure pressurisation
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Typical Applications
In combined-cycle power plants the DS200GSIAG1B is installed in Mark V drive cubicles that feed the gas-turbine compressor motor. The snubber network clamps IGBT turn-off spikes, keeping EMI within IEEE 519 limits and extending IGBT lifetime beyond 100,000 hours
In combined-cycle power plants the DS200GSIAG1B is installed in Mark V drive cubicles that feed the gas-turbine compressor motor. The snubber network clamps IGBT turn-off spikes, keeping EMI within IEEE 519 limits and extending IGBT lifetime beyond 100,000 hours
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In pipeline booster stations the same card is used in 4.16 kV VFDs that drive centrifugal compressors; the trim pots are adjusted on-site to match the installed 1700 V IGBT modules, ensuring <5 % overshoot during full-load switching
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Because the board is certified for marine environments, it is also used on off-shore platforms for well-boost compressors where fan-less, high-dv/dt immunity is mandatory .
