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I have an application where I will be installing a 400V 50HZ switchboard to distribute from a 11/0.4kV 1500kVA transformer. The incomer will be a 2000A Air circuit breaker. I will need to bond the neutral bar to earth in the switchboard. How do I calculate:- i)The size of the neutral - earth...

I wish to carry out a study, comparing various different types of H.V. cables (>33kV) to compare the associated losses of each type. I need to know where to start! Any ideas??

I have an apllication, where we I will be installing 4off 380kW pump motors. Initially it was assumed that these motors would be fed at 415 50Hz. Can anyone suggest at what point it becomes economically viable to opt for H.V. (3.3kV or 6.6kV) drives as opposed to 415V. The cabling itself is not...

I have an apllication, where we I will be installing off 80kW pump motors. Initially it was assumed that these motors would be fed at 415 50Hz. Can anyone suggest at what point it becomes economically viable to opt for H.V. (3.3kV or 6.6kV) drives as opposed to 415V. The cabling itself is not...

I have an application where I will be taking a 100A 400V 3phase supply to a new distribution board. The cabling will be single core cables in non-trefoil formation. The gland plate is ferrous (steel). I do not believe that eddy current heating will be a prblem in this application, but how do I...