Three-phase hermetic oil immersed transformers with capacity ratings 630, 1000 and 1600 kVA and HV up to 10 kV designed to be installed in substations as well as outside and inside buildings.
Distributions three-phase transformers TMZ are produced with nominal tension in primary winding 6 or 10 kV. Nominal tension in secondary winding is 0,4 or 0,69 kV.
Scheme and connection group of windings Yyn-0 or Dyn-11.
Transformers TMZ contain nitrogen cushion that provides additional protection against oil oxidation and compensates for variation of temperature, which affects the volume of oil.
For measuring the temperature of the upper layer of oil in the tank is installed electro thermometer with contacts.
To control the internal pressure in the tank and signaling the maximum values the pressure gauge is mounted.
In order to maintain the pressure, in the tank is mounted a special safety diaphragm which is actuated when the pressure in the transformer comes up to 0.75 atmosphere and the gases are expelled outside.
Dimensions and weight of the oil transformers TMZ
|Transformer type||Dimensions, mm||Weight, kg|