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  1. imanou

    Required Water Quality for DELUGE System for Oil Transformers

    Hi to all! I am wondering about the needed quality of the water which is used on outdoor oil-transformers fire fighting deluge systems. Just poor potable water is good enough or is needed something special like demi water with low conductivity or something else? Thanks in advance!
  2. imanou

    Earthing Method

    I would be grateful if you could help me to find any Technical Papers about the selection of an earthing method for a medium voltage system (6 kV).It is an industrial application and I want to select between an unearthed system and a high impedance system.

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