• Compact
  • Low maintenance
  • Star and delta connection

Product Info

The RS12 on-load tap changer is a single and three phase tap changer in oil technology which is Elprom’s most compact design. It is the preferred choice for small to medium transformers in distribution and transmission grids. The RS12 features a design with the oil vessel in a single compartment facilitating ease of repair and maintenance. The RS12 is designed and manufactured according to the requirements of the International Standard IEC 60214-1.

Technical Data

Rated current three phase (A) 200, 400
Rated voltage (kV) 41,5; 72,5; 123 – for star connected windings
41,5; 72,5 – for delta connection windings
Step voltage (V) Up to 2500
Connection diagrams With and without coarse and reverse change-over selector
Number of steps Up to 27
Carrying flange shape Round
Standard IEC/IEEE 60214-1

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