General Electric WESDAC D20ME 820-0468-00 is an evidence-bounded legacy D20/D200 substation-controller processor reference. GE Vernova documents D20ME as the processor used in D20/D200 substation-controller hardware. The requested GE-Harris identifier 820-0468-00 is retained for nameplate and order-record verification because the cited brochure does not map it to one exact D20ME configuration.
- Verified base model: D20ME
- Requested identifier: GE Harris 820-0468-00 - mapping HOLD
- Standard D20ME memory: 2 MB Flash; 512 kB NVRAM; 1.5 MB SRAM
- Chassis context: D20 or D200, including documented VME arrangements
System role: D20ME supplies processor, communication and data-concentration functions within the documented D20 or D200 chassis architecture. Only facts stated by the cited manufacturer sources are published; sibling, predecessor and successor data are not transferred. Architecture boundary: The standard D20ME VME entry is listed with 2 MB Flash, 512 kB NVRAM and 1.5 MB SRAM; D20ME II is a separate variant and must not be substituted without verification. Exact revision, firmware, host, connector and field-wiring details must be checked against the physical unit and approved project documentation. For maintenance, replacement or migration work, verify the complete nameplate, companion hardware, wiring, configuration and commissioning procedure before returning equipment to service. Origin, HS code, dimensions and logistics weight remain unpublished without exact manufacturer model-level evidence.
Important Notice: Verify D20ME versus D20ME II, the complete 820-0468-00 label, chassis, firmware and termination before service work.
Apter Power WESDAC D20ME 820-0468-00 Manuals and Guides
Important Notice: The first link is the model-specific product-parameters PDF prepared only from the cited General Electric official evidence; the second link is the Apter Power product information manual. Confirm the physical nameplate, current General Electric documents, and host-system requirements before installation or replacement.
Installed-base maintenanceSupports evidence-led identification and replacement planning for General Electric WESDAC D20ME 820-0468-00.
System documentationProvides a source-traceable boundary for the documented host, I/O, communication or termination role.
Commissioning reviewGuides identity, companion-hardware, wiring and controlled functional checks before return to service.
Migration assessmentSeparates exact-model facts from suffix, sibling, predecessor, successor and family-level information.
Read and follow the exact General Electric documentation and host-equipment instructions before work. Verify the complete physical nameplate and system configuration.
1Verify D20ME versus D20ME II, the complete 820-0468-00 label, chassis, firmware and termination before service work.
2Do not treat 820-0468-00 as a verified order code or merge D20ME with D20ME II. GE Vernova marks D20/200ME controller manufacturing discontinued and points to G500 or D20MX/D200MX alternatives.
3De-energize the equipment and follow the site's approved electrical and process-safety procedure before disturbing hardware or wiring.
4Back up controller, network, I/O and configuration data before replacement, migration or firmware work.
5Verify every companion module, cable, connector, termination and power source from approved drawings.
6Do not copy electrical, communication, mechanical or lifecycle values from a related model, suffix or successor.
7Perform a documented functional test and confirm diagnostics, alarms and fail-state behavior after work.
8Origin, HS code, dimensions and logistics weight remain unpublished without exact manufacturer model-level evidence.
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