Power oil transformers type TMZ 630 - 1000 kVA, Vinnytsia region.

Power oil transformers type TMZ three-phase two-winding with the nominal voltage of the primary winding (high voltage) up to 10 kV inclusive and the secondary winding (low voltage) of 0.4 kV.
For voltage regulation, TMZ transformers are equipped with a high-voltage switch, which allows voltage regulation in steps of 2.5% by +/-2x2.5% of the nominal value when the transformer is turned off from the mains on the LV and HV sides. The switch is connected to the winding of high voltage.
Inputs HV and LV for external installation, removable, insulators are pass-through porcelain. On inputs with a current of 1000 A and above, a special clamp with a blade is attached to the upper part of the current-carrying rod, which ensures the connection of a flat bus. The inputs are placed on the narrow walls of the tank. An oil indicator is attached to the wall of the oil-gas expander for monitoring the oil level at different ambient temperatures.