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SWER Generator v1

SWER Power System – Interactive Training Diagram

SWER Single Wire Earth Return

INTERACTIVE TRAINING DIAGRAM — RURAL POWER DISTRIBUTION
VOCATIONAL TRAINING v2.0
LAYER
FAULT
ANIM
⚡ FAULT CONDITION ACTIVE — See info panel for details
EARTH / GROUND POTENTIAL (≈0V) GRID SUBSTATION 11kV / 33kV MV FEED ISOLATION TX EARTHED SECONDARY RETURN POINT 11kV 12.7kV GND ROD POLE SINGLE OVERHEAD CONDUCTOR 12.7kV or 19.1kV (SWER LINE) DIST TX 12.7kV → 240V GND ROD HOUSE 240V ⚙ PUMP/FARM ← EARTH RETURN CURRENT PATH → 12.7kV / 19.1kV 240V LV ✓ COMPLETE CIRCUIT

SWER System Overview

Click any component on the diagram to learn more, or use the layer buttons to explore different aspects of the system.


What is SWER? Single Wire Earth Return is a low-cost method of rural power distribution using a single overhead conductor and the earth itself as the return path.


  • Single overhead wire (live)
  • Earth is the return conductor
  • Isolation transformer required
  • 12.7kV or 19.1kV typical
  • Used in remote rural areas

Step-by-Step Sequence

01 Power generated at substation
02 Isolation TX feeds SWER line
03 Current travels single conductor
04 Current through customer TX
05 Current returns through earth
06 Complete electrical circuit

Legend

Live conductor (12.7kV SWER)
Earth / ground return path
Transformer elements
LV / neutral conductors

💡 Click hotspot areas on diagram for explanations. Toggle layers above to explore different aspects.