ZVU are used at power engineering facilities, industrial enterprises, as well as in direct operating current networks of traction and transformer substations of the railway and are designed:
- for charging maintained and low-maintenance lead-acid batteries, sealed lead-acid batteries with gas recombination, lithium-ion and nickel-cadmium batteries (AB);
- to keep the AB in constant recharge mode;
- for parallel operation with the AB to the load;
- for supplying power to the load when the AB is switched off;
- to provide galvanic isolation between AC and DC circuits.
Designation - NRT (2x) K.N + X.Y, where K / X - rated output current of the main / additional channel (15 - 400 A) / (25, 40, 60); N / Y - rated output voltage of the main / additional channel (24, 48, 110, 220 V) / (24, 48 V).
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