Recent content by mea03wjb

Hi, I have a problem with an integral - I'd like to simplify it as much as possible... y =\int\frac{1}{f(theta,phi) }d.phi / \int\frac{1}{g(theta,phi)} d.phi 2 different functions integrated with respect to phi. Note the division symbol between the integrals! The limits of...

Hi, I don't know how to describe this properly but I want to integrate a function of 2 variables to end up with a function of one variable. \int \frac{f(A)}{f(A,B)} dA I will integrate this function and end up with a function of B, i.e. f(B). Then I can substitue in different values of B...

"I am driving the 22kW motor (as a generator) with a smaller motor (7.5kW) so the currents outputs in steady-state should be low." The reasons for this are that I am researching motor faults and need to create a test rig. The smaller motor will be the one under test, the larger motor plus...

Ok thanks for your help guys. I'm gussing that the maximum value you are talking about is the continuous maximum value of current. e.g. a 22kW motor may draw 40A under normal operation but at start-up it can draw nearly 8 times that, just over 300A. If I was sizing cables to deal with 300A...

Hello, I am trying to work out what cable to supply a 3 phase motor with. I am using data from the manual that tells me: for 34A max load current use 6mm2 The drive output I am using has an Imax(cont) = 34A and an Imax = 52A. Is ir correct to use 6mm cable, i.e. should I be using the...

Please can you define what the varaibles are at the top of this script: What are 'sr' and 'f'?