Oil-insulated transformer KOTEF

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Oil-Insulated Combined CT/VT up to 420 kV KOTEF utilizes the same components as the individual CTs and VTs. Both transformers are combined in a single metering unit and are available in porcelain or composite. The KOTEF combines the advantages and design features of the OSKF and OTEF lines. Customer Benefits • Excellent solution for adding metering capability to either a new substation installation or a site being upgraded where space is at a premium • Price advantage • Space saving - only one base • Cost savings on transportation and assembly • Maintenance free • Protection against bursting Characteristics • Oil expansion by stainless-steel diaphragm bellows • Oil level indicator • Secondary cores in aluminum box • Changing of primary ratio by primary series-parallel connection (double or triple ratio) or by secondary taps • Compliance with IEC and IEEE or equivalent standards • Paper oil insulation