E/I

DUAL TRANSFORMER A/B - Interactive SLD & Breaker Control v10R2

Full autoplay starts after opening · switching sequences A/B · temporary backfeed · oil draining, vacuum and filling Developed by JFCF

PORTABLE HTML — TRAINING / REVIEW ONLY. The approved MST, ITP, PTW, OEM drawings and verified site valve line-up remain governing. No degraded-oil recirculation through the active part.

Learning guide

This interactive presentation explains how the SUBSTATION 132/33 kV supply is operated during normal service, transformer isolation, temporary backfeed and controlled oil replacement.

Recommended learning route

  1. Start in Control Desk and identify the normal energized path.
  2. Run Sequence A or Sequence B one step at a time.
  3. Observe the colour changes, interlocks and maintained auxiliary supplies.
  4. Open the oil section only after understanding the electrical isolation boundary.

Colour convention

Red: energized/closed · Green: open/isolated · Amber: current operation/transition · Blue: earthed · Grey: de-energized.

This is an explanatory training aid. Approved procedures, permits, OEM documentation and the verified site condition remain governing.

Rights, use and source credits

© 2026 JFCF. All rights reserved.

The original interface design, explanatory structure, animations, operating narrative and educational adaptation are identified as the work of JFCF.

No unauthorized republication, resale, removal of author identification, re-upload, extraction or derivative distribution. A copy viewed for authorized training or project review does not transfer ownership.

Third-party material

Project drawings, OEM information, company names, equipment marks and other third-party material remain the property of their respective owners. They are displayed only as technical references for authorized training/review. No project drawings are embedded in this public training version.

Document identification

Master family: JFCF Technical Learning Lab · Pilot: SUBSTATION DUAL TRANSFORMER A/B · Revision: FR/EN-P01 · Date: September 2026.
132/33 kV DUAL-TRANSFORMER SUBSTATION

A1 - Confirm normal condition

Energized / closed live path Open device De-energized Earthed Operated now
Interactive single line diagram for transformer TRANSFORMER A shutdown Two 132 to 33 kilovolt transformers, SUBSTATION incomers H05 and H07, SUBSTATION bus-section H06, upstream bays C50 and C40, normal remote load supply through UTILITY H06, remote network H01 and H05, and temporary backfeed through normally open remote network H02 and SUBSTATION H08. H04 is not connected and locked open. 132 kV - UTILITY GRID 132 kV - UTILITY GRID BAY C50 - TRANSFORMER A Internal device tags: TO BE CONFIRMED BAY C40 - TRANSFORMER B Transformer B incoming bay C50 DS C50 CB* EARTH C50 C40 DS C40 CB* EARTH C90 TRANSFORMER A 132/33 kV - 55/70 MVA TRANSFORMER B 132/33 kV - 55/70 MVA H05 DS H05 / E18SUBSTATION INCOMER-1 EARTH H05 H07 DS H07 / E28INCOMER-2 EARTH H07 BUS 1 BUS 2 H06 / E12BUS-SECTION H02 / E50AUXILIARY TRANSFORMER — ALWAYS SUPPLIED H02 AUXILIARY TRANSFORMER ESSENTIAL SUPPLY MAINTAINED H11 / E80AUXILIARY TRANSFORMER — ALWAYS SUPPLIED H11 AUXILIARY TRANSFORMER ESSENTIAL SUPPLY MAINTAINED H04NOT CONNECTED - OPEN / LOTO H08 / E20REMOTE LOAD ↔ BUS 2 REMOTE 33 kV RMU / TEMPORARY BACKFEED UTILITY SOURCE 33 kV FEEDER H06 H06 CLOSED UTILITY H06 H01INCOMER - CLOSED REMOTE NETWORK RMU BUS H05REMOTE LOAD FEEDER - CLOSED REMOTE LOAD LOAD H02OPEN - CLOSE FOR BACKFEED BACKFEED: H02 → H08 → SUBSTATION H06 TR-A AUXILIARIES Cooling / OLTC / heatersDGA / controls: ON
ACTION

EXPECTED STATE / VERIFICATION

HOLD POINT

Educational simulation only; never an operating or installation procedure. · Corrected copy 2026-10-03 · Source 1eba400f