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GE DS2020FEBNRX050A

Product Name: Mark V Feeder Earth-Fault Neutralizer Relay / Analog Conditioning Board
Product Description: A specialized analog scaling and neutralizer relay board used in Mark V turbine cores to condition LVDT, servo, thermocouple, 4-20 mA, vibration, and generator-line signals, and to manage medium-voltage feeder earth-fault neutralization.
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Detailed content

Technical Specifications:
  • Platform: Mark V DS200 core, TCQA-class analog conditioning
  • Jumpers: J1-J8 for mA range (20/200 mA), RS-232 test, oscillator enable
  • Connectors: 3PL to STCA, JE to TCQC, JB to TBQC 4-20 mA
  • Current Rating: 50 A neutral current class
  • Frequency: 50/60 Hz
    Functional Features: Signal scaling, cold-junction compensation, servo demodulation, compressor stall detection support, RS-485 Modbus on feeder variant.
    Structural Characteristics: Heavy FR-4 card, 7 jumpers, 2 terminal strips (3 terminals each), pin connectors, standoff-mount in drive bracket.
    Working Principle: Field transducer → TBQA/TBQC terminal board → DS2020FEBNRX050A scales/conditions → 3PL/COREBUS → STCA/TCQC controllers.
    Installation Requirements: Install with wrist strap, de-energize all driver sources, keep jumper default unless documented.
    Usage Notes: Reversing J1/J2 destroys mA stage; only qualified electrical staff touch neutralizer relay portion.

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