Once the relay identity and document revision are verified, maintenance can select a replacement or return the device to service without treating a similar catalog number as proof of interchangeability. Follow the request from the English Electric nameplate through the legacy-company record chain, but let the physical relay and its terminal data decide whether any retrieved document applies.
Where does the documentation request stop?
The request begins with the equipment owner, passes through the current official support channel for the legacy relay business, and then must reach an archive containing English Electric records. The useful historical routing chain is English Electric to GEC, then GEC Alsthom, Alstom, and Areva. That chain identifies where records may have migrated; it does not establish that a later relay is electrically equivalent.
| Request hop | Address or identifier | Required response | Next branch |
|---|---|---|---|
| Installed device | 23AF8IX6 |
Complete nameplate and terminal evidence | Record all markings before searching |
| Legacy manufacturer | English Electric | Catalog sheet, manual, drawing, or archive index | Follow the corporate record path |
| Successor records | GEC → GEC Alsthom → Alstom → Areva | Positive match to the complete model string | Validate the document against the device |
| Archive clue | Relay records associated with the Stafford works | Document number and revision | Compare ratings, terminals, and timing |
If official support cannot locate 23AF8IX6, ask for an archive-index search rather than a modern cross-reference alone. Include photographs and request records for the complete identifier, including every suffix character. A response that matches only 23AF remains a candidate, not a resolved identification.
What must be read at the physical layer first?
Layer one is the relay itself. Photograph the front, sides, base, socket, internal diagram, terminal numbers, inspection labels, and every plate fixed to the panel. Clean only enough to read the markings; aggressive cleaning can remove ink or paper labels. Record characters exactly, distinguishing 1 from I and 0 from O. The supplied model is 23AF8IX6, but the ambiguous-looking characters must be checked against the nameplate.
Capture the panel reference designation and wire labels before moving conductors. Those labels reveal how the relay is used even when the catalog record is missing. Trace which terminals feed the coil and which form contacts, using the installed drawing where available. Do not infer a terminal function from physical position: different relay variants can share an enclosure while using different bases or contact arrangements.
| Reading | Where to obtain it | Decision made |
|---|---|---|
| Full type code | Nameplate and base | Defines the archive search key |
| Coil marking | Coil, label, or internal diagram | Separates supply variants |
| Terminal numbering | Base and installed drawing | Tests whether a candidate diagram applies |
| Contact symbols | Internal diagram or manual | Identifies normal and operated states |
| Panel function | Wire labels and schematic | Defines the required operating duty |
Which record path should be followed next?
Send one evidence package through the successor organization's official support route. Use a subject such as “Legacy English Electric relay documentation request — 23AF8IX6.” State whether the need is identification, maintenance data, a terminal diagram, or replacement selection. Ask support to route the case to legacy relay archives associated with the Stafford operation.
Attach readable photographs and transcribe the markings in the message body so an archive search does not depend on image recognition. Request the document title, document number, revision, applicable type-code range, terminal drawing, ratings table, and any suffix-decoding table. If the archive returns multiple records, compare their applicable variants before selecting one.
If the path stops at a corporate name change, retain the case reference and ask which organization currently holds the historical drawings. Corporate succession moves records between custodians; it does not alter the installed relay's ratings or prove compatibility with a successor-branded product.
Which electrical and timing values decide the match?
The complete type designation must resolve to the correct coil, contacts, operating characteristic, and base. Never energize a loose relay from a guessed coil voltage. Read the applied control voltage at the installation and compare it with the coil marking or a positively matched ratings table. Determine whether the supply is AC or DC; for AC, also obtain the specified frequency from the plate or document.
| Setting or characteristic | Required source | Reject the candidate document when |
|---|---|---|
| Coil voltage and supply type | Nameplate plus ratings table | Voltage or AC/DC designation differs |
| AC frequency, if applicable | Nameplate or ratings table | The documented frequency does not match the circuit |
| Contact arrangement | Terminal diagram | Normal and operated states differ |
| Contact duty | Ratings table and actual load | Load type or duty exceeds the documented rating |
| Pickup and dropout values | Applicable test data | Measured operation lies outside the specified limits |
| Pickup, dropout, or delay timing | Applicable timing table | Measured time fails the documented tolerance |
| Terminal map and base | Drawing plus physical inspection | Any terminal function or keying feature differs |
No operating values can be decoded safely from 23AF8IX6 alone. Read each missing value from the relay, the circuit drawing, or the applicable manufacturer table. A dimensional or mounting match addresses installation fit only; it does not prove electrical or functional interchangeability.
How is a candidate manual validated?
Start with the document's applicability statement and revision. Search for the complete identifier, then check any type-code table character by character. If the manual covers a family rather than the exact suffix, decode every suffix through its own table before using the data.
- Compare the manufacturer, family, and full model string with the physical plate.
- Match the coil voltage, supply type, and frequency where applicable.
- Compare terminal numbers and contact states against the installed schematic.
- Match the contact duty to the actual controlled load, including whether the load is resistive or inductive.
- Check pickup, dropout, reset, and intentional delay data only where those characteristics are listed for the exact variant.
- Record the document title, number, revision, and applicable type range in the maintenance file.
A failed comparison sends the search back to the archive branch. Do not combine the terminal drawing from one variant with the ratings table from another. That creates a synthetic specification that may describe no manufactured relay.
What procedure resolves and verifies the relay?
- Isolate the affected circuit under the site's electrical safety procedure and prove the relevant conductors de-energized before handling the relay or base.
- Record the complete
23AF8IX6marking, coil data, terminal layout, wire identifiers, contact symbols, mounting details, and panel function. - Submit the evidence package through official successor support and request an archive search following the English Electric, GEC, GEC Alsthom, Alstom, and Areva record path.
- Accept a manual only after its applicability and revision cover the complete relay variant.
- Compare every electrical, contact, terminal, and timing requirement with the installed circuit. Resolve any mismatch before energization.
- With the approved test method and correctly rated equipment, verify coil operation, each contact's normal and operated state, pickup and dropout behavior, and any specified delay.
- Restore the circuit under controlled conditions and confirm that the driven circuit changes state correctly without unintended operation.
FAQ
Why does an English Electric 23AF8IX6 search find later company names?
Legacy relay records moved through English Electric, GEC, GEC Alsthom, Alstom, and Areva. Use that chain to route an archive request, then validate any returned record against the physical relay.
Why does a 23AF family manual not prove my 23AF8IX6 ratings?
The suffix can distinguish coil, contact, base, or operating variants. Match 23AF8IX6 character by character and verify the ratings and terminal tables assigned to that exact variant.
How do I verify a replacement for an English Electric relay?
Match coil supply, frequency where applicable, contact arrangement and duty, terminal map, mounting, pickup and dropout behavior, and specified timing. Finish by operating the restored circuit under controlled conditions and confirming every driven function changes state correctly.