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817 series

Japanese electric multiple unit train type

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionFeb 13, 2026
Entity authorityQ4644521
Source-derived summary

The 817 series (817系) is an AC electric multiple unit (EMU) train type operated on commuter and local services by Kyushu Railway Company (JR Kyushu) in Japan since 2001. The design was based on the earlier 815 series, with transverse seating replacing the previous longitudinal seating, although later variants reverted to longitudinal seating.

Variants

There are five sub-series variants, 817-0, 817-1000, 817-1100, 817-2000, and 817-3000 series, allocated to five depots, Kagoshima, Kumamoto, Minami-Fukuoka, Nagasaki, and Nōgata. The trains carry large colour-coded stickers next to the passenger doors according to the depot.

Kagoshima (817-0 series): Blue

Kumamoto (817-0 series): Green

Minami-Fukuoka (817-3000 series): Orange

Nagasaki (817-0 series): Red

Nōgata (817-1000, 817-1100, 817-2000 series): Yellow

817-0/-500 series

31 two-car sets (V001 to V031) were delivered to Minami-Fukuoka and Nōgata depots between August September 2001 for use on the newly electrified Fukuhoku Yutaka Line, Nagasaki Main Line, and Sasebo Line.

The 31 sets were later reallocated to Kagoshima, Kumamoto, and Nagasaki depots from 2003 following the arrival of 817-1000 series sets.

In fiscal 2020, set V004's transverse seating was replaced with longitudinal seating. It was given the classification 817-500 series and renumbered V504.

Formation

The KuMoHa 817 car is fitted with a PS401K single-arm pantograph.

Interior

Seating is arranged in a transverse configuration, with flip-over seat backs to face the direction of travel.

Editorial summary

Begin with the source’s own compact description: “817 series” is japanese electric multiple unit train type. The dossier treats that line as a proposition to test through series, Japanese and electric, not as a finished interpretation.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—2001, 1000, 1100, 2000—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, series, Japanese and electric is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “japanese electric multiple unit train type” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Feb 13, 2026. The linked authority identifier is Q4644521. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2001, 1000, 1100 and 2000.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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  2. Expand the search: follow 817 series primary sources, 817 series archive and series research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

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Source & attribution

This entry incorporates text from 817 series” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.