"location"=>"indoor","operator"=>"WP HZP B.V.","transformer"=>"generator","voltage"=>"30000"
"location"=>"outdoor","phases"=>"1","transformer"=>"auto","voltage:primary"=>"-25000","voltage:secondary"=>"25000","windings"=>"2"
"location"=>"outdoor","phases"=>"1","transformer"=>"auto","voltage:primary"=>"-25000","voltage:secondary"=>"25000","windings"=>"2"