Siemens JFR Distribution Step Voltage Regulator 21-115532-001 - Manual (Page 12)

Wiring diagram of a typical regulator with series transformer
showing both internal and external connections.
S L
SL
CONNECTION DIAGRAMS
Page 8
S L SL LOAD
SOURCE
Schematic diagram of a typical regulator with series
transformer with fan power U3-U5.
*Note: Exciting Winding may not be fully tapped.
Refer to regulator nameplate.
SERIES TRANSFORMER DESIGN
Typical arrangement of windings and connections of
Series JFR regulators, without fan power.
Note: Series Transformer design units may or may
not be equiped with a balance winding.
Refer to regulator nameplate.