Flameproof transformer unit type ZTO -*/* is a supplying equipment, intended for underground mining industry, for supplying of electric equipment, mining machines, supplied from three-phase or one-phase network with alternating current with isolated star point of the transformer with supply voltage of secondary side 230/133 V AC or 220/127 V AC and 42 V ACFlame-proof transformer unit is equipped with one changeover mechanical switch with manual drive (reversible) and two independent feeders controlled separately. Used components ensure operational reliability of the transformer unit in the underground mining with meeting safety requirements.
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