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        • Lifecycle status

          Discontinued / Obsolete by OEM
          Apter Power offers IC3600TCBA1 quotes, English exciter data and SCR control-path identification.

        IC3600TCBA1

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        1001 reviews ｜ Need a Specific Revision?
        For a GE SCR thyristor field exciter, General Electric IC3600TCBA1 is the comparator card that scales the S-to-C command for firing control.
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        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.
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        Technical specifications for IC3600TCBA1

        • Manufacturer:
          General Electric
        • Part Number:
          IC3600TCBA1
        • Product Family:
          GE Excitation Control
        • Product Type:
          SCR Exciter Comparator Card
        • Stock:
          1
        • System Function:
          SCR thyristor field exciter command interface
        • Command Terminals:
          S and C
        • Nonreversing Polarity:
          Negative at S increases positive output
        • Reversing Command:
          Negative S for positive output; positive S for negative output
        • Forward Firing Path:
          F1F
        • Reverse Firing Path:
          R1F through reversing logic
        • Input Processing:
          Voltage scaling on the CB card
        • Test Input Terminals:
          5T and 3T
        • Tariff Code:
          8537101190
        • 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 Command Path Pulse Timing Direction Logic Circuit Boundary

        Features:

        • Scales the S-to-C voltage command for SCR firing control.
        • Shifts firing-pulse timing in nonreversing exciter operation.
        • Coordinates forward and reverse firing paths through reversing logic.
        IC3600TCBA1 sits between the external exciter command and the low-level firing circuits rather than in the thyristor load path.

        Command polarity at IC3600TCBA1 determines the requested output direction when the exciter includes reversing logic.

        The scaled signal from IC3600TCBA1 changes firing phase while the gate-and-filter circuits deliver the actual pulses to the SCR cells.

        The General Electric IC3600TCBA1 SCR Exciter Comparator Card may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        General Electric IC3600TCBA1 SCR Exciter Comparator Card Manuals,Datasheets,Link 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.

        Command Path

        • Input pair: IC3600TCBA1 receives the exciter demand between S and C.
        • Scaling: The CB path reduces the command to the level required by the firing circuits.
        • Boundary: The card processes a low-level control signal rather than exciter load current.

        Pulse Timing

        • Initial state: At zero command, gate pulses occur while the addressed SCR is reverse biased.
        • Command effect: A larger negative S command advances the effective firing interval.
        • Result: IC3600TCBA1 moves the pulses into the forward-conduction portion of the cycle.

        Direction Logic

        • Positive output: Negative S selects the forward F1F path.
        • Negative output: Positive S is inverted for the R1F path in a reversing exciter.
        • Interlock: The opposite direction remains locked until the conducting thyristors turn off.

        Circuit Boundary

        • Comparator role: IC3600TCBA1 scales and routes the exciter command.
        • Pulse delivery: Gate-and-filter circuits carry the firing pulses to the SCR cells.
        • Power stage: The SCR bridge converts AC input power to controlled DC output.
        Description
        Between the S-to-C exciter command and the low-level firing circuits, General Electric IC3600TCBA1 operates as the SCR exciter comparator card. The card scales that voltage before it enters the firing-control circuitry that establishes exciter output.

        In a nonreversing arrangement, IC3600TCBA1 interprets a negative voltage at S relative to C as a command to increase positive output. The scaled signal shifts the timing of the firing pulse train so the SCR gate pulses move from reverse-biased intervals toward the forward-conduction portion of the AC cycle.

        For a reversing exciter, IC3600TCBA1 sends the scaled command to both the forward firing path F1F and the reversing logic. Negative S selects the positive-output direction; positive S is inverted through the reversing path so R1F can command negative output after the interlock logic confirms that the opposing thyristors are no longer conducting.

        The S-to-C interface on IC3600TCBA1 therefore controls firing phase rather than carrying exciter load current. A controlled test voltage applied through the documented test-input connection changes the command presented to the firing circuits, keeping command scaling distinct from the gate-and-filter stages and the SCR power bridge.
        Alternative Names
        GE IC3600TCBA1 SCR Exciter Comparator Card General Electric IC3600TCBA1 Comparator Board IC3600-TCBA1 IC3600 TCBA 1 IC 3600 TCBA1 GE TCBA SCR Command Card IC3600TCBA1 Thyristor Exciter Control Board General Electric Mark Series TCBA Card
        Technical notes
        General Electric IC3600TCBA1 scales the S-to-C command for the forward and reversing SCR firing-control paths.
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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
        The S-to-C command changes on IC3600TCBA1, but the exciter DC output stays flat. Where should signal tracing begin?
        Start at the scaled output from IC3600TCBA1 to the firing card, then confirm that the shifted pulse train reaches a forward-biased SCR interval.
        After a polarity reversal, the exciter initially refuses to drive in the new direction through IC3600TCBA1. Is the delay part of the logic?
        Yes. The reversing logic associated with IC3600TCBA1 holds the opposite firing circuit locked until the previously conducting thyristors are off.
        A negative command at S produces the expected positive output, but a positive command does not produce negative output. Which IC3600TCBA1 path is missing?
        The positive-S command from IC3600TCBA1 must pass through the reversing logic to R1F; F1F alone only serves the forward direction.
        A test voltage between 5T and 3T changes the IC3600TCBA1 command, yet no gate response appears. What boundary should be checked next?
        Verify the handoff from IC3600TCBA1 to F1F or R1F before moving to the gate/filter cards and SCR bridge, because those are separate stages.
        Technicians are looking for exciter load current on IC3600TCBA1 when diagnosing low output. Why is that the wrong measurement point?
        IC3600TCBA1 carries and scales the low-level firing command; the gate/filter circuits deliver pulses and the SCR bridge carries the converted power.

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