Frequency Converter

Power converter chastotyOdnim of the most important parameters of the electric power is his. For this reason, when choosing a frequency converter in the first place, it should be defined with its load ability. In accordance with the existing nominal capacity of the engine chosen frequency converter, designed for the same power. And that choice will be correct, provided that the load on the shaft will not dynamically change, the current will not significantly exceed the nominal value set as for the motor and inverter. Therefore, it would be more correct to make the choice to maximize the value of the current the motor from the inverter overload capacity, taking into account the latter.

Typically, the ability to overload states in percentage of rated current with a maximum admissible time of this congestion to the activation of immediate protection. Thus, for a correct choice to know the nature of congestion is your mechanism, in particular: what is the level of congestion, what is their duration and how often they appear. Supply Equally important is the question of the supply voltage. The most common case – is powered by a three-phase industrial network 380, but variants are possible when drive is designed to operate from single phase 220-240V. As a rule, the latter is limited to a number of capacities up to 3,7 kW. There are options and high-drive, giving the opportunity to manage more powerful engines, with Power is measured is in mw, at a relatively lower current.