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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power provides DS200TCTSG1A quotation assistance and access to the relevant GE technical file for purchaser review.

        DS200TCTSG1A

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        General Electric DS200TCTSG1A is the Mark V TCTS simplex trip board used in the medium-steam turbine protection path for ETD1 and ETD2 trip-device circuits.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Technical specifications for DS200TCTSG1A

        • Manufacturer:
          General Electric
        • Part Number:
          DS200TCTSG1A
        • Product Family:
          GE Mark V/VI Driver Board
        • Product Type:
          Simplex Trip Board
        • Stock:
          1
        • Board Type:
          Medium-steam turbine simplex trip board
        • Output Circuits:
          ETD1 and ETD2
        • System Interface:
          Mark V P protection core and PTBA
        • Trip Logic:
          ETR/KE and PTR/KP relay paths
        • External Interface:
          PTBA terminal assembly
        • Signal Routing:
          Trip logic, generator-panel contacts, trip contacts and solenoid outputs
        • Configuration Check:
          Configured TCTS board type must match attached hardware
        • Core Connection:
          JL path between protection-core I/O and trip hardware
        • Tariff Code:
          8537109090
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Trip Architecture Relay Logic Signal Paths Fault Diagnosis

        Features:

        • Provides the TCTS simplex trip-board arrangement for Mark V medium-steam turbines.
        • Keeps ETD1 and ETD2 electromechanical trip-device circuits on separate relay paths.
        • Uses three-channel voltage feedback to distinguish common output faults from one-channel detection faults.
        The medium-steam assignment separates this board from the gas-turbine and large-steam TCTx arrangements, whose trip outputs and hardware roles differ.

        Each ETD circuit combines an emergency relay branch with its corresponding primary relay branch before the signal reaches PTBA and the field trip device.

        Loopback comparison adds diagnostic context: an intended trip command may be correct even when the measured solenoid voltage shows a problem in the common output chain.

        Apter Power offers sourcing and document support for General Electric DS200TCTSG1A Simplex Trip Board after OEM discontinuation.
        General Electric DS200TCTSG1A Simplex Trip Board Manuals, Datasheets, Links Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

        Medium-Steam DS200TCTSG1A Arrangement

        • Turbine class: TCTS is the trip-board form assigned to the Mark V medium-steam application.
        • Simplex structure: DS200TCTSG1A uses one common board assembly rather than the gas-turbine or large-steam TCTx arrangement.
        • Field interface: PTBA carries generator-panel contacts, trip contacts, and solenoid outputs between the board and site wiring.
        • Paired outputs: ETD1 and ETD2 remain separate from their relay logic through to the final trip-device circuits.

        ETD Relay Paths on DS200TCTSG1A

        • ETD1 emergency branch: ETR1 and KE1 form the emergency relay portion of the first trip-device path.
        • ETD1 primary branch: PTR1 and KP1 provide the corresponding primary relay portion.
        • ETD2 branches: ETR2/KE2 and PTR2/KP2 repeat the two-branch structure for the second trip device.
        • Path separation: Distinct relay combinations allow an ETD1 fault to be evaluated without treating ETD2 as the same circuit.

        DS200TCTSG1A Common and Field Routes

        • J7W path: Supplies the common board power associated with the medium-steam trip chain.
        • PTBA inputs: Generator-panel and trip contacts enter the protective arrangement through the terminal assembly.
        • PTBA outputs: ETD1 and ETD2 solenoid circuits leave the board through their assigned field terminals.
        • Feedback route: Actual trip-device voltage returns for comparison with the intended relay state.

        Interpreting DS200TCTSG1A Loopback Results

        • Three-channel alarm: The same discrepancy on all protection channels points toward the common board, J7W supply, or PTBA output path.
        • One-channel alarm: A discrepancy confined to one channel belongs to that channel's detection circuit or cable.
        • Valid command: Correct relay intent with incorrect measured voltage shifts attention from the command source to contacts, terminals, or the field load.
        • Output proof: ETD1 and ETD2 should be checked separately from command state through actual solenoid-voltage feedback.
        Description
        Within the Mark V medium-steam turbine protection arrangement, General Electric DS200TCTSG1A is the TCTS simplex trip board assigned to the paired electromechanical trip-device circuits.

        PTBA carries generator-panel contacts, trip contacts, and trip-valve solenoid outputs between site wiring and DS200TCTSG1A. The two principal output circuits are ETD1 and ETD2, keeping the paired trip devices on separate board paths.

        For ETD1, DS200TCTSG1A combines the ETR1/KE1 and PTR1/KP1 relay paths; ETD2 uses the corresponding ETR2/KE2 and PTR2/KP2 combination. This separation allows relay-side discrepancies to be distinguished from the final trip-device output.

        Loopback logic compares actual solenoid voltage with the intended ETD state. When all three protective channels report the same discrepancy, the common DS200TCTSG1A, J7W supply, or PTBA output path becomes the shared boundary; a one-channel report instead points to that channel's detection path.
        Alternative Names
        DS200-TCTS-G1A DS200 TCTS G1A GE DS200TCTSG1A General Electric DS200TCTSG1A GE Mark V DS200TCTSG1A DS200TCTS G1A TCTS DS200TCTSG1A DS200TCTSG1A Medium Steam Turbine Trip Board
        Technical notes
        DS200TCTSG1A is the medium-steam TCTS variant; preserve J7W, PTBA, protection-channel, and ETD1/ETD2 connections as a single documented trip chain.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Why can DS200TCTSG1A show an ETD loopback alarm when the command is correct?
        The DS200TCTSG1A loopback compares actual trip-device voltage with the intended state, so a common power, relay-contact, PTBA terminal, or field-load problem can disagree with a valid command.
        What does the same DS200TCTSG1A ETD discrepancy on all three protective channels suggest?
        A three-channel DS200TCTSG1A report directs attention to the common trip board, J7W power cable, or PTBA output screws before replacing an individual protection processor.
        What does a one-channel DS200TCTSG1A trip discrepancy suggest?
        A single-channel DS200TCTSG1A indication points toward that channel detection circuit or cable rather than the shared ETD output path.
        How are the two DS200TCTSG1A trip-device outputs separated?
        DS200TCTSG1A uses distinct ETD1 and ETD2 paths, with corresponding ETR/KE and PTR/KP relay combinations for each medium-steam trip device.
        Why must the turbine application be confirmed for DS200TCTSG1A?
        DS200TCTSG1A TCTS belongs to the medium-steam arrangement; gas and large-steam Mark V systems use different TCTx trip-board variants and output logic.
        What wiring should be identified before removing DS200TCTSG1A?
        Record the DS200TCTSG1A J7W power path, protection-channel connections, PTBA trip contacts, and ETD1/ETD2 output terminals so each relay and field circuit returns to its original route.
        How should DS200TCTSG1A be proven after installation?
        Verify DS200TCTSG1A ETD1 and ETD2 commands, actual solenoid voltage feedback, each protective-channel indication, and the final PTBA trip-device outputs without bypassing the documented trip logic.

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