As mentioned by DougMose Voltage/frequency ration should always be maintained constant in variable frequency drive.Further,try to adjust the torque preset if it is adjustable in your variable frequency drive.(Assuming motor is tripping on overload and overload setting is correct.)
There may be other consumers connected with the 33KV line.So how do you ensure that the 33KV power supply fed into the utility grid by step up transformers will reach to
housing estate only.It would be much better option to lay dedicated cables from Gensets to the housing estate Power Control...
The basic difference between MCCB (Moulded case circuit breaker) and ACB(Air circuit breaker) is that the former can not be closed remotely because the operating mechanism of MCCB is different from the ACB.Secondly,MCCb is not repairable and complete unit is required replacement while ACB can be...