In terms of support we offer:

  • free rent of devices,
  • help with parameter choice,
  • remote problem diagnostics,
  • support with changing inverter’s type/manufacturer.
Simplified inverter choice:
  1. With regard to motor’s nominal voltage
    A motor with power input of 3 x 230 V can be connected with an inverter with single-phase 230 V power input. This rule usually applies to motors with power of up to 4 kW. A motor with power input of 3 x 400 V requires an inverter also with 3 x 400 V power input.
  2. With regard to motor’s nominal current
    Inverter’s nominal output current has to be greater or equal than motor’s nominal current. If we predict short-term low-overload operation, an inverter with higher output current must be considered.
  3. With regard to load character:
    • Variable torque load – pumps and ventilators
      In this case we can use a BD600 inverter with one level lower power than motor’s power, which leads to lowering inverter costs. This change of inverter’s characteristics is performed by us.
    • Constant torque load, such as conveyor belts, cranes, elevators, mills etc.
      In this case we have to consider starting torque, which can be very large. In principle every inverter has current overload capacity of 150% of nominal current for a time not longer than 60 seconds (after that time the inverter reports an error). That may prove to be inadequate to start the motor, which is why it may be necessary to use an inverter with power at least one level higher than motor’s power. For correct motor operation it is necessary to apply an efficient vector control algorithm – as implemented in our BD600 inverter series.