GE Electric | DS3800NB1F1B1A | Termination Board
DS3800NB1F1B1A Product Overview
Functional Description:
The GE DS3800NB1F1B1A is a Termination Board for GE Speedtronic Mark IV gas/steam turbine control systems. It provides signal conditioning, relay interfacing, and electrical isolation for critical I/O connections between field devices and the turbine controller.
Key Parameters & Specifications
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Parameter
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Specification
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|---|---|
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Part Number
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DS3800NB1F1B1A
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Series
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GE Speedtronic Mark IV System
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Function
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Signal Termination & Relay Interfacing
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Input Voltage
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48 V DC (43–53 V DC range)
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Analog Inputs
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16 channels (0–10V DC, ±20mA)
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Digital I/O
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24 channels (TTL/relay, 120V AC/DC max)
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Relay Contacts
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8× Form-C (5A @ 30V DC, 3A @ 250V AC)
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Isolation Voltage
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1,500 V AC (field-to-logic)
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Terminal Type
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Screw terminals (AWG 28–12)
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Operating Temp.
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-10°C to +60°C (14°F to 140°F)
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Backplane Connector
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64-pin AMP (MALE)
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Compliance
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UL 508, CSA C22.2 No. 142
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Product Series
- Core component of Speedtronic Mark IV I/O Termination Series (replaces legacy DS200 boards).
Key Features
- Double-Barrier Isolation: Optical + magnetic separation for noise immunity.
- Fused Inputs: 0.5A fast-blow fuses on all analog channels.
- Surge Suppression: MOV-based transient protection per IEEE C37.90.
- LED Status Indicators: Per-channel health monitoring.
- DIN-Rail Mounting: Tool-less installation.
- Legacy Compatibility: Interfaces with IS200/DS200 series modules.
Functions & Roles
- Signal Distribution: Routes sensor/actuator signals to Mark IV controller.
- Ground Loop Elimination: Breaks ground paths via isolated commons.
- Relay Buffering: Drives high-power contacts from low-voltage logic.
- Voltage Conversion: Scales 110V AC signals to 5V DC logic levels.
- Fault Containment: Prevents field-side surges from damaging control cards.
Applications & Use Cases
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Industry
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Application
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|---|---|
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Power Plants
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Gas turbine flame detection circuits
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Cogeneration
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Steam turbine valve position feedback
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Oil Refineries
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Pump vibration monitoring interfaces
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Compressor Stations:
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Anti-surge control relay logic
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Marine Propulsion
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Diesel engine governor signal conditioning
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Documentation & Support
- Manual: GEH-6192 (Mark IV Hardware Configuration)
| Compatible Controllers | Replacement Kits |
|—————————-|——————————-|
| Mark IV (P/N 531X301DAP) | DS3800NBxA1B Kit (fuses/connectors) | - Tool Compatibility: GE PACE Toolbox (legacy)
- Modern Alternative: EX2100e Excitation Platform
Critical Notes:
- Obsolete Status: Partially discontinued (GE recommends migration to Mark VIe).
- Max Wire Gauge: 12 AWG copper only.
- Derating: Reduce current by 20% above 40°C ambient.
- Safety: Requires arc-flash enclosure when handling live terminals.
- Legacy Cross-Reference: Compatible with IS200TBCIH1C analog cards.
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