u r right about isolation of common neutral from multiple gensets configuration. maybe the defination of cb isn't clear enough. when u say cb, it should mean current limiting device - breaks off the currents under abonormal condition for certain specific time. if we hv ground fault and the cb...
additionally to what jbartos explained, you can also look into other derating factors like your cabling method (grouping) and ambient temperature of your installation. refer to the BS7679 table 4. also take into your cable sizing the motor starting method. as the typically calculation on the...
i'm sorry jbartos, i am a little bit nervous with having the circuit breaker for the ground. is it safe to this? if your primary concern is charging current, then an isolator switch will do. breaking up the continuity of ground is not really a good idea. the ground should be the last to go...
If u refer to the BS7671:1992 16th Ed., there is a table for u to refer to. it shud be a straight forward calculation. in addition, u also need to take into the surrounding temprature and installation method factors, which incidentally is included in the BS7671:1992 16th Ed. all this is in pg...
have you been succesful so far? i am having problem of my own. any idea how to estimate power factor correction needed from a typical installation? what is the right procedure to obtain this info? i base this calculation purely on statistical taking a ratio of similiar installation, i.e...
Have find out how to compute total power factor of installation yet? it is easier to improve existing power factor correction needed, than, estimating power factor from new installaiton.
Here is what i do with my project. I gather all the data on the motors installed and average out the power...
