RS 9 and RS 9.3 SERIES



  • Single and three phase
  • Reliable
  • Low maintenance
  • Wide range of applications
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Product Info

The RS9/9.3 on-load tap changer is a single and three phase tap changer with a varied range of voltage and current variants. The RS9/9.3 tap changer is the most widely used type of all Elprom tap changers and the most popular choice for transformers of the medium power range. 
The RS9/9.3 is a reliable, low maintenance tap changer well-suited for various applications in the industry and transmission and distribution grid. It is a highly customizable solution that is designed, manufactured and tested according to the requirements of the International Standard IEC 60214-1.

Technical Data

Rated current single phase (A) 200, 400, 630, 800, 1200 and 1600 - single phase design for all connection diagrams
Rated current three phase (A) 200, 400, 630 - three phase design for regulation at neutral point
Rated voltage (kV) 41,5; 72,5; 123; 170; 245 and 300
Step voltage (V) Up to 4000
Connection diagrams With and without coarse and reverse change-over selector
Number of steps Up to 35
Carrying flange shape Round or elliptic
Standard IEC/IEEE 60214-1
Selector switch insulation level K, L, M, N and P

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