The GE IS200ERBPG1A serves as the central interconnect backbone for GE’s EX2100 excitation
control system, designed to facilitate seamless power distribution, signal transmission, and module
communication within the excitation regulator rack. Its core function is to act as a "hub" that links
critical EX2100 modules—including excitation controllers (e.g., DSPX), I/O interface modules (e.g.,
IS200ERBPG1ACA), power supply modules (e.g., IS200EPSMG1AED), and feedback boards (e.g.,
IS200EDCFG1ADC)—ensuring synchronized operation of the entire excitation system. It distributes
regulated 24V DC power from the main power supply to all installed modules via integrated power
rails, eliminating the need for separate wiring and reducing points of failure. Additionally, the
backplane incorporates GE’s proprietary EISB (Exciter Internal Serial Bus) communication traces,
enabling real-time data exchange (e.g., control signals, diagnostic data) between modules with low
latency (<5ms), critical for maintaining excitation current stability. It features built-in mechanical
guides for precise module alignment during installation, and its rugged design includes a corrosion-
resistant metal frame and conformal-coated circuit traces to withstand harsh industrial environments
(e.g., power plant vibration, dust, and temperature fluctuations). The backplane also supports hot-
swapping of compatible modules, allowing maintenance or replacement without shutting down the
entire excitation system—maximizing uptime for mission-critical power generation applications.
Technical Specifications
| Parameter Category | Details |
| Core Function | Central interconnect for EX2100 excitation system; distributes power, enables EISB communication, and supports module integration. |
| Mechanical Specifications | - Form Factor: Rack-mountable backplane (compatible with EX2100 standard 19-inch racks) - Module Slots: 8–10 dedicated slots for EX2100 modules (3U Eurocard form factor) - Material: Corrosion-resistant steel frame + FR4 PCB (conformal-coated per IPC-CC-830B Class 3) - Dimensions: 482.6mm (W) × 304.8mm (H) × 25.4mm (D) (19-inch rack width, 12U height) |
| Power Distribution | - Input Power: Accepts 24V DC from main power supply (e.g., IS200EPSMG1AED) - Power Rails: 4 integrated power rails (24V DC, GND, +15V DC, -15V DC) for module power - Current Capacity: 20A max total (5A per power rail) |
| Communication Interface | - Protocol: GE proprietary EISB (Exciter Internal Serial Bus) - Data Rate: 10 Mbps (full-duplex) - Communication Traces: Shielded differential pairs to reduce EMI/RFI interference - Latency: <5ms for signal transmission between modules |
| 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 (10–500Hz, 5g acceleration) - Shock Resistance: IEC 60068-2-27 (50g, 11ms duration) |
| Compatibility | - System: Exclusive to GE EX2100 excitation control system - Compatible Modules: IS200DSPX (controller), IS200ERBPG1ACA (I/O), IS200EPSMG1AED (power supply), IS200EDCFG1ADC (feedback), IS200EGDMH1A (ground detector) - Backplane Type: Passive backplane (no active components, reducing failure risk) |
| Safety & Compliance | - Certifications: UL 61010-1 (industrial safety), IEC 61800-5-1 (motor drive compatibility), CE - Isolation: 2.5kV AC between power rails and communication traces - Overcurrent Protection: Compatible with module-specific resettable fuses (no built-in fuses, relies on upstream protection) |
| Installation & Maintenance | - Mounting: Screw-mount to EX2100 rack (torque: 3.0 Nm) - Module Alignment: Built-in guide pins for precise slotting - Hot-Swap Support: Yes (for compatible hot-swappable modules) - Diagnostic Features: No integrated LEDs (relies on module LEDs for status monitoring) |
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