TransformerPath ← Learn hub

๐Ÿ”€ On-Load Tap-Changer โ€” Cutaway

๐Ÿ  Hub โ† Masterclass 500 MVA โ†’
Resistor-type OLTC ยท diverter + tap selector + change-over selector ยท motor drive. Switches the regulating winding under load without interrupting current.

Tap position

Tap 9 / 17

Cutaway / Exploded

assembledexploded

Diverter switching type

Components

View

Selected part

Click any part to identify it. Press Raise to watch a tap operation: the selector pre-selects off-load, then the diverter transfers the current.
๐Ÿ–ฑ drag = orbit ยท wheel = zoom ยท right-drag = pan ยท click = identify
Watch the sequence: selector moves first (no current) โ†’ diverter snaps (current bridges through the transition resistor).