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Self-dehydrating breather Comem eSDB

Moisture is a leading cause of transformer aging. Avoiding moisture ingress into the transformer is of paramount importance to avoid outages and maximize the lifetime of the asset. 
Comem eSDB has digital and analog output and data monitoring through Modbus and 4-20 mA. It increases transformer reliability, reduces operating costs, is maintenance-free and easy to install.

Continuous moisture absorption is ensured by two independent silica gel tanks working alternatively on time-based or condition-based principles.

Hitachi ABB Power Grids offers a wide range of self-dehydrating breathers for various applications

Why Hitachi ABB Power Grids?

  • More than 50 years of experience in manufacturing transformer components
  • Comprehensive product portfolio for distribution and power transformers
  • New generation of self-dehydrating breathers with digital and analog output (eDevices)
  • Global after-sales and customer support network

Product scope

  • Smart grid applications
  • Comem eSDB10 and Comem eSDB10C for on-load tap-changers (OLTC)
  • Comem eSDB12C for OLTCs, Peterson coils, cable boxes and traction applications
  • Comem eSDB14C for power transformers up to 40 MVA
  • Comem eSDB15 for power transformers from 40 MVA to 200 MVA
  • Comem eSDB30 for power transformers from 200 MVA
  • Comem eSDB40 for HVDC applications
  • Suitable for new installations and retrofits
  • Data monitoring available through Modbus and 4-20 mA
  • Compatible with EN and DIN standards

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