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On-load Tap-Changers

Vacuum type OLTCs
SF6 Gas Insulated Vacuum Type OLTCs
Arcing contacts in oil OLTCs

De-energized Tap-Changers

Series PBVE
Series PBV
Series PBVKL

Drive units

Hand Drive
Motor Drive

SF6 Gas Insulated Vacuum Type OLTCs

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RS 21 SERIES

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The RS21 on-load tap changer is a unique Elprom design operating in SF6 gas insulated power transformers

Rated currents

310 A – single phase design

Rated voltage

72,5 kV

Step voltage

1200 V

Connection diagrams

reverse change-over selector

Number of steps

up to 23

Selector switch insulation level

L

Carrying flange shape

elliptic