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      81004-286-52-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 81004-286-52-R is a PowerFlex 7000 matched pair of 400 A SGCT power devices.
      • Manufacturer part number
        81004-286-52-R
      • Shipping
        Swift global dispatch
      • Condition
        New, original product
      • Shipping size (est.)
        20.8cm x 19.5cm x 3.5cm
      • Country of Origin
        USA

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      What happens after you enquire

      • 0

        Review your reference

        Send the complete Allen-Bradley 81004-286-52-R reference, label photographs and required quantity. Include the installed drive and all 2 matched device positions.

      • 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 81004-286-52-R marking and any hardware revision on the item. Include the installed drive and all 2 matched device positions.

      • Check the offered item before ordering

        Request available label and connector photos. Have your maintenance team compare the offered 81004-286-52-R with the installed equipment and applicable Allen-Bradley documentation.

      Technical specifications for 81004-286-52-R

      • Manufacturer:
        Allen-Bradley
      • Product Category:
        General Automation
      • Spare Part Number:
        81004-286-52-R
      • Weight:
        0.56 kg
      • Tariff Code:
        8537101190
      • Device technology:
        SGCT
      • Device class:
        400 A
      • Matched device count:
        2
      • Assembly form:
        matched pair
      • Command transmission:
        Fiber-optic
      • Diagnostic return:
        Fiber-optic
      • Offline gate-supply window:
        19.6-20.4 V
      View as PDF Ask for Quote

      Information

      Overview Downloads Applications / Compatibility Product Precautions
      • Allen-Bradley 81004-286-52-R restores a defined matched group in the drive switching structure. Device matching, optical gating and diagnostic feedback must be assessed together at the affected power assembly.
      Device current class: 400 A
      Matched group: 2 SGCT devices
      Control path: Optical gate command and diagnostic feedback
      This matched pair contains 2 devices in the 400 A SGCT class. The matching identity applies to the group and must remain traceable during replacement. Neither multiplying the device count nor comparing current markings establishes the complete drive rating or an alternative assembly.

      The drive compares feedback around a gate event during its Offline diagnostic sequence. Feedback remaining low directs a feedback-loss investigation; feedback remaining high directs a gating-loss investigation. The physical device position, firing-card indications and optical path help distinguish these cases.

      The associated nominal 20 V firing source, secure power connections, optical interfaces and SGCT resistance checks are part of the diagnostic process. Complete the prescribed Gating Test and investigate associated motor-filter-capacitor causes where indicated before restarting the drive.
      Controller platform reference: PowerFlex 7000 switching structure. Retain matched-set identity and device-position records.
      The original technical excerpt for Allen-Bradley 81004-286-52-R covers SGCT diagnostic logic and exact matched-set identification. The separate installation guide covers matched-group retention, optical paths, auxiliary power and drive tests.
      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 matched pair requires the corresponding PowerFlex 7000 power assembly. Gate supplies, optical boards and other drive hardware are separate unless itemized.

      Application scope: Use the complete spare identity and affected device positions to select the repair. Current class alone does not establish interchangeability.
      Prepare Allen-Bradley 81004-286-52-R for its configured installation using these checks.
      Retain matching

      Keep all group labels and device positions together.

      Prove isolation

      Apply the medium-voltage service and discharge procedure.

      Protect optical paths

      Avoid crossed, damaged or pinched gate and return fibers.

      Check auxiliary power

      Verify the firing source and seated connections.

      Interpret resistance carefully

      A nonzero resistance alone does not prove device health.

      Resolve the original fault

      Confirm diagnostic recovery before restarting the drive.

      Alternative Names

      81004 286 52 R Allen-Bradley 81004-286-52-R

      Technical notes

      Matched pair handling: Preserve the two-device matching relationship and converter location when handling the replacement pair. Similar packaging does not establish the correct electrical class.

      Feedback investigation: Check both the outgoing gate signal and returning feedback path. Persistent feedback after a gate command is a diagnostic condition, not proof of successful switching.

      FAQ View All FAQ

      • Which current class identifies the pair supplied as 81004-286-52-R?
        It is a matched pair of 400 A SGCT devices for the PowerFlex 7000 spare-parts system.
      • Why is 81004-286-52-R distinct from a two-piece order of single SGCTs?
        Its part identity includes a matched two-device relationship. Quantity alone does not prove that two separately sourced singles form the specified pair.
      • Does 81004-286-52-R define whether the installed position is in the inverter or rectifier?
        The spare identity establishes device class and matched form. Use the installed drive assembly and phase/device designation to determine the actual position; do not infer it from the pair count.
      • Which optical path is checked when feedback from 81004-286-52-R remains high after gating?
        Check the gate-command path, its optical connections and the DPM-to-OIB connection under the Gating Loss procedure. Unchanged high feedback differs from unchanged low feedback.
      • How should the firing-card supply connections of 81004-286-52-R be assessed?
        Verify both the associated nominal 20 V supply and the seating of power connectors at each affected device. A healthy source does not prove a sound connection at the firing card.
      • Why is motor-filter-capacitor condition relevant to a feedback-loss investigation around 81004-286-52-R?
        The drive diagnostic guidance includes a non-operational motor filter capacitor as a possible cause. Resolve that condition, particularly before synchronous-transfer operation.
      • Can the 400 A class of 81004-286-52-R be substituted by a higher-current SGCT without review?
        No. Device class alone does not establish assembly compatibility. Match the complete spare selection and installed power structure.
      • What proves recovery of each device path in 81004-286-52-R?
        Compare the drive fault position, gate-driver indication, controlled gating response and returned feedback for both devices. Keep the pair identity and test results together.
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