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CONNEX Socket, Size 3, for Transformers, up to 52 kV


  • Socket for mounting into transformers, breaker units, condensers, joints and other oil-insulated equipment
  • Insulating medium: oil (max. operating temperature: 110°C)
  • Attention: With XLPE-insulated cable the max. temperature of the conductor must not be higher than 90°C.


  • Testing of transformer in factory due to short time amount for plugging the accessories
  • Assembly time is significantly reduced and safe assembling guaranteed
  • Touch-proof, maintenance-free and floodable (IP67)

Technical Data

Article no. 827 110 222
Size 3
Max. system voltage Um (kV) 52
Nominal voltage Un (kV) 45 - 47
Conductor Earth Voltage U0 (kV) 26
Applicable standards EN 50180-1
Pitch circle diameter for fastening (mm) 113
incl. sealing and fastening set yes
Working place indoor, outdoor and offshore
Insulation medium mineral oil or ester
Environment temperature (°C) -25°C up to 50°C
Routine test: AC withstand voltage 1 min. (kV) 95
Routine test: Partial discharge test < 2 pC at (kV) 57
Rated lightning impulse withstand voltage BIL (kV) 250
Nominal current IN (A) 1250
Max. dynamic short circuit current (kA) 150


Data sheet as pdf-file
Drawing as pdf-file

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