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      81001-450-53-R

      Matched SGCT Set
      Ships by Thursday, November 12
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      Allen-Bradley 81001-450-53-R is a PowerFlex 7000 matched set of three of 800 A SGCT power devices.
      • Manufacturer part number
        81001-450-53-R
      • Shipping
        Swift global dispatch
      • Condition
        New, original product
      • Shipping size (est.)
        25cm x 20.7cm x 5.5cm
      • Country of Origin
        USA

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      What happens after you enquire

      • 0

        Review your reference

        Send the complete Allen-Bradley 81001-450-53-R reference, label photographs and required quantity. Include the installed drive assembly and whether a single device or matched set is required.

      • 1

        Confirm the offer

        Review the offered revision, condition, included items and documents against the confirmed installation.

      • 2

        Arrange dispatch

        Confirm quantity, dispatch date, lead-time start and delivery details in the quotation.

      • Match the complete marking

        Include the complete Allen-Bradley 81001-450-53-R marking and any revision or assembly number visible on the item. Include the PowerFlex 7000 drive and affected power-device position.

      • Check the offered item before ordering

        Request available label and connector photos. Have your maintenance team compare the offered 81001-450-53-R with the installed equipment and applicable Allen-Bradley documentation.

      Technical specifications for 81001-450-53-R

      • Manufacturer:
        Allen-Bradley
      • Product Category:
        General Automation
      • Spare Part Number:
        81001-450-53-R
      • Weight:
        1.14 kg
      • Tariff Code:
        8537101190
      • Device technology:
        SGCT
      • Device current class:
        800 A
      • Device quantity:
        3
      • Assembly form:
        Matched set of three
      • Gate-drive supply check:
        19.6–20.4 V; Offline diagnostic
      • Gating signal:
        Fiber-optic
      • Diagnostic feedback:
        Fiber-optic
      View as PDF Ask for Quote

      Information

      Overview Downloads Applications / Compatibility Product Precautions
      • Allen-Bradley 81001-450-53-R belongs to the PowerFlex 7000 switching power structure. Its three-device matching relationship must be considered together with the installed drive assembly and the optical gate/feedback circuits.
      Device class: 800 A SGCT
      Assembly form: Matched set of three
      Diagnostic context: Optical gating and feedback comparison
      The 81001-450-53-R selection identifies a matched set of three in the 800 A SGCT current class. The matching relationship applies to the three devices together and must remain identifiable during replacement. The part is used within the PowerFlex 7000 power-electronics architecture; its device current class is not a complete drive output rating.

      SGCT diagnostics compare feedback before and after an issued gate pulse. For the inverter, unchanged low feedback indicates the feedback-loss path, while unchanged high feedback indicates that the gate pulse may not have reached the device. The diagnostic sequence operates during initial contactor closure and the start process, with additional checks after a drive reset.

      Fault investigation combines device resistance, gate-driver LED status, optical-cable condition and the prescribed Gating Test. The associated nominal 20 V firing supply must be active; the Offline diagnostic specifies 19.6–20.4 V. A device can be faulty without measuring as a complete short, so a kilohm reading alone does not establish health.
      Controller platform reference: PowerFlex 7000 SGCT power structure. Match the installed assembly and the drive service procedure.
      The original technical excerpt for Allen-Bradley 81001-450-53-R covers SGCT diagnostic paths and exact spare-part selection. The separate installation guide covers assembly identification, isolation, optical inspection and diagnostic recovery.
      Original manufacturer pages retain their technical context. Use the Apter Power guide with the applicable manufacturer instructions and approved installation design.
      System and supply context: The 81001-450-53-R spare is a matched set of three in the 800 A class. Its use requires the corresponding PowerFlex 7000 assembly; optical interfaces, supplies and other drive hardware are separate unless itemized.

      Application scope: Apply the exact spare selection to the installed power structure after identifying its assembly and diagnostic position. Current class alone does not establish interchangeability with another drive device.
      Prepare Allen-Bradley 81001-450-53-R for its configured installation using these checks.
      Identify the assembly

      Match the exact spare reference, current class and single/matched-set form.

      Isolate medium-voltage energy

      Follow the drive isolation, discharge and verification procedure before opening the power structure.

      Preserve optical routing

      Keep gate and feedback fibers identified and free of pinching or damage.

      Check the firing supply

      Verify the auxiliary supply and seated firing-card power connections under the prescribed test conditions.

      Interpret resistance correctly

      A device need not be a complete short to be faulty; follow the specified test procedure.

      Prove diagnostic recovery

      Resolve the original fault and associated causes before authorizing drive operation.

      Alternative Names

      81001 450 53 R Allen-Bradley 8100145053R

      Technical notes

      Engineering relationship: Gate-drive supply and optical feedback are parts of the drive diagnostic circuit. They do not establish the SGCT blocking voltage, switching frequency or complete drive current rating.

      Installation boundary: Retain phase/device-position identifiers when inspecting the gate driver, supply and fibers. A low suspect resistance can indicate a faulty SGCT without a complete short.

      Technical basis: Rockwell Automation PowerFlex 7000 Troubleshooting Guide, 7000-TG002L-EN-P, February 2020. 81001-450-53-R is the 800 A matched set of three selection. The optical and gate-supply values describe PowerFlex 7000 SGCT diagnostic conditions, not independent semiconductor voltage or drive-output ratings.

      FAQ View All FAQ

      • How many devices are supplied by the 81001-450-53-R matched-set reference?
        The reference identifies a matched set of three 800 A SGCT devices. The three-device matching identity is part of the technical selection, not merely a quantity of unrelated single parts.
      • Can three independent single SGCTs be assumed equivalent to 81001-450-53-R?
        No. Three singles do not establish the matched-set relationship. Retain the matching identity and use the drive-specific replacement procedure for the affected assembly.
      • What does unchanged high feedback mean during a gate test of 81001-450-53-R?
        For the inverter Gating Loss diagnostic, feedback is high before and remains high after gating. The drive interprets this as the gate pulse not reaching the device; inspect the gating path and its connections.
      • Which connection upstream of the optical interface matters when diagnosing 81001-450-53-R?
        In a Gating Loss investigation, verify the DPM-to-OIB connection as well as the fibers between the optical interface board and SGCT firing card. Replacing a matched set does not correct an upstream connection fault.
      • Why must the devices in 81001-450-53-R remain identified during replacement?
        The part selection is a matched three-device set. Keeping the set labels and assigned assembly positions together avoids losing the matching relationship during inspection and installation.
      • What distinguishes an SGCT feedback fault from a gate-pulse fault around 81001-450-53-R?
        A feedback-loss diagnostic sees feedback remain low before and after gating. A gating-loss diagnostic sees it remain high. These observations direct different optical-path checks and are not interchangeable fault names.
      • Should the gate-driver LEDs be checked separately for the devices in 81001-450-53-R?
        Yes. Correlate each affected device position with its gate-driver indications and the drive fault code. A set-level part identity does not mean every device or every optical path has the same diagnostic state.
      • Does the three-device construction of 81001-450-53-R establish a higher voltage rating?
        No voltage rating can be derived by multiplying the number of devices. The spare-part identity establishes a matched set and the 800 A device class; the actual drive topology governs voltage application.
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