Go Back

Industrial & Medical

Transformer Cooling

Direct drive axial fans in AC and EC versions are a big part of the ebm-papst world. Renowned for their efficiency, low noise and reliability, these transformer fan designs are assembled from durable ebm-papst components. These include proven external rotor motors, technology leading HyBlade® composite impellers, combination fan guard/motor support and round venturi with intake radius and exhaust side flange for optimum performance and easy mounting. For additional benefits like speed control and greater efficiency at turndown, upgrades from AC asynchronous motors to ebm-papst GreenTech EC motors are available across the fan range.

A portfolio of axial cooling fans for oil cooled transformers has been created to define a world-wide product range for almost every electrical grid and which fulfill the following criteria:

  • UV resistant HyBlade® impeller
  • air flow direction "A" (intake over fan guard)
  • maximum ambient temperature typically 60 or 65°C
  • IP55 standard
  • drain holes standard on the stator side (optionally on rotor side)
  • round venturi w/flange for easy mounting and optimum performance
  • venturi and guard grille in RAL 9006 transformer grey
  • withstand 720 hours salt fog environment according to ISO 12944 class C5M

Standard supply voltages AC motor: 3~ 208-277 V Δ / 380-480 V Y 50/60 Hz; EC motor: 380-480 V 50/60 Hz