RE421REPAH1APR4
RE421REPAH1APR4
RE421REPAH1APR4
RE421REPAH1APR4
RE421REPAH1APR4
RE421REPAH1APR4
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RE421REPAH1APR4

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GE RE421REPAH1APR4 is an EX2100 excitation-control assembly identified by its complete GE order-specific part number for renewal-parts verification.
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Technical specifications for RE421REPAH1APR4

  • Manufacturer:
    General Electric
  • Part Number:
    RE421REPAH1APR4
  • Product Family:
    General Electric
  • Product Type:
    EX2100 Excitation-Control Assembly
  • Stock:
    1
  • Documented platform:
    EX2100 excitation control
  • Identification method:
    Complete part number and system renewal-parts description
  • Required project data:
    Exciter model and requisition number
  • System context:
    Generator field-excitation control with application-specific power conversion
  • Selection limitation:
    Assembly contents and ratings depend on the original GE project configuration
  • 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 Specifications Excitation System Part Identification Selection Review

Features:

  • Complete GE order-specific part number
  • Used within an application-defined EX2100 excitation configuration
  • Requires renewal-parts and requisition verification
RE421REPAH1APR4 must be identified from the description assigned in the original system renewal-parts list rather than from a shortened family label.

The associated EX2100 platform controls generator field excitation and can use different control and power-conversion redundancy arrangements selected for the original application.

Quotation and replacement review should compare the exciter model, requisition, nameplate, assembly description, bridge arrangement, and connected equipment before acceptance.

The GE RE421REPAH1APR4 EX2100 Excitation Control Assembly is listed as Active / Available from OEM under the current evidence rule. Apter Power can assist with document matching.
GE RE421REPAH1APR4 EX2100 Excitation Control Assembly 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.
GE RE421REPAH1APR4 EX2100 Excitation Control Assembly Specs

General

  • ManufacturerGE
  • ModelRE421REPAH1APR4
  • ConditionNew Original
  • Product FamilyEX2100 Excitation Control
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.

System-level operating context

  • Function: EX2100 produces generator field current to regulate terminal voltage or reactive volt-amperes.
  • Control options: The original system may use simplex or redundant control.
  • Bridge options: Power conversion may use single, parallel, warm-backup, or redundant bridge arrangements.
  • Configuration: The installed arrangement is defined by the project requisition and system documentation.

Renewal-parts requirements

  • Part number: Use every character of RE421REPAH1APR4 when requesting the assembly.
  • Description: Match the part name and description in the GE renewal-parts list.
  • Exciter data: Record the exciter model shown on the system nameplate.
  • Requisition: Provide the GE requisition number when requesting identification support.

Pre-order verification points

  • Architecture: Confirm the control and power-conversion redundancy arrangement.
  • Assembly scope: Check the documented components included in the order-specific assembly.
  • Connections: Compare terminals, cabling, cooling, and mounting with the project drawings.
  • Evidence: Do not substitute a generic relay, PLC, or neighboring GE order code.
Description
The RE421REPAH1APR4 is handled as an order-specific GE assembly within the EX2100 excitation-control environment. GEH-6632 explains that these assemblies are identified by the complete part number and the description recorded in the system renewal-parts list; every character must therefore be matched before procurement or replacement.

In the EX2100 architecture associated with RE421REPAH1APR4, the excitation system produces generator field current to regulate AC terminal voltage or reactive volt-amperes. The system can be configured with simplex or redundant control and with single, parallel, warm-backup, or redundant power-conversion arrangements according to the original project design.

The power-conversion portion relevant to RE421REPAH1APR4 uses three-phase full-wave thyristor bridges, DC-leg fuses, thyristor-protection networks, and reactor assemblies sized for the required output. Exact assembly content varies by bridge rating and requisition, so generic relay or PLC specifications must not be applied to this part number.

Before selecting RE421REPAH1APR4, obtain the GE renewal-parts list and confirm the exciter model, requisition number, bridge configuration, assembly description, and nameplate data. Apter Power can assist with document collection and part-number matching, but system compatibility must be established from the original GE project documentation.
Alternative Names
RE42IREPAHIAPR4 RE 421 REPA H1A PR4 RE421 REPAH1APR4 RE421-REPAH1A-PR4 RE421REPAH1APR4 GE GE RE421REPAH1APR4 General Electric RE421REPAH1APR4 EX2100 RE421REPAH1APR4
Technical notes
GE RE421REPAH1APR4 is an order-specific EX2100 excitation-control assembly. GEH-6632 requires the complete part number, exciter model, requisition, and renewal-parts description for correct identification.
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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.
What is GE RE421REPAH1APR4?
GE RE421REPAH1APR4 is an order-specific excitation-control assembly that must be identified through the applicable GE renewal-parts list.
Which system information is required for GE RE421REPAH1APR4?
GE RE421REPAH1APR4 identification requires the complete part number, exciter model, requisition number, assembly description, and nameplate data.
Can GE RE421REPAH1APR4 be selected from generic relay specifications?
GE RE421REPAH1APR4 should not be selected from generic relay specifications because GE defines order-specific assemblies by project documentation.
How does GE RE421REPAH1APR4 relate to EX2100?
GE RE421REPAH1APR4 is associated with an EX2100 excitation-control configuration that regulates generator field excitation.
What must be checked before installing GE RE421REPAH1APR4?
Before installing GE RE421REPAH1APR4, verify isolation, the original assembly description, bridge arrangement, connections, cooling, and project instructions.
How should a GE RE421REPAH1APR4 mismatch be investigated?
For a GE RE421REPAH1APR4 mismatch, compare the nameplate and renewal-parts entry with the exciter model, requisition, and installed assembly.
Can Apter Power support a GE RE421REPAH1APR4 quotation?
Apter Power can support a GE RE421REPAH1APR4 quotation after reviewing available nameplate, renewal-parts, exciter, and requisition information.

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