Electrical equipment – especially motors and their controllers – will not operate reliably on unbalanced voltages in a 3-phase system. Generally, the difference between the highest and the lowest voltages should not exceed 4% of the lowest voltage. e.g. if the lowest voltage is 220V, the other two must not exceed 228.8V.
Greater imbalances may cause overheating of components – especially motors – and intermittent shutdown of motor controllers. Motors operated on unbalanced voltages will overheat, and many overload relays can't sense the overheating. This has a detrimental impact on the life of the motor. In addition, many solid state motor controllers and inverters include components that are especially sensitive to voltage imbalances.
With the BlueGreen three-phase voltage manager installed you can be assured that phase imbalance is completely eliminated and that the voltage delivered from each phase will remain within specification.