I need a good starting point and/or information about Honda Generators with Automatic Voltage Regulators.
I need to know information about the output, as in whether or not the output is a sinusoid, or if there's some distortion in the waveform, any peaks, etc.
We have problems in the field...
I also want to note that I actually have the NLA data for the Balder motors, wheras I was estimating for the Franklins. I suspect that, as you just said, I was using an estimate for NLA that was too small, and that's where my error was originating.
Hmm.. my comments about the low horse, high SF motors was based on me testing the data for some of the Franklin Motors... it seems that for the Balder motors, the SFA calculation is pretty close; in many cases, if I round down to the nearest .1A it's almost dead on.
Hmm. The nameplate for Baldor Catalog #VM3550 lists FLA as 2.3 and SFA 2.5 with a SF of 1.15...
As I was explained it, SFA was the maximum continuous amps without damaging the motor. Looked at as sort of a 'danger' value. But it's desired to know just how much we can squeeze out of the...
The reason I ask, is that Baldor lists the Amps at service factor on the nameplate of the motor. But they don't seem to publish it. We're in the practice of sizing to run at as much amps as possible without causing damage to the motor. We use the SFA to gauge about how much we can do this...
We need to tabulate Service Factor Amps for various motors we are considering matching with drive. Can't find the SFA published in any materials either in Baldor Motors catalog or on their website. Does anyone know if this information is published anywhere? I'm still waiting for Baldor Motors...
Hmmm... good point :)
I suppose I'd have to determine exactly how critical estimating the volume will be. My guess is that it's not extremely vital in my case. Running my simulation for either case, I haven't noticed very much difference between the two cases, so that seems more or less in...
Whoops! That's what I meant: Isothermal. If the pressure changes a few psi over the course of a second or two, would that be sufficient enough to assume isothermal activity? I'd assume so, myself, but I want to be sure. Note that this change would be no more than about 15% of the initial...
I figured this out.
Begin with Vo*Po=V*P for the air.
V = Po*Vo/P
dV/dt = Po*Vo * -1/P^2 * dP/dt = dVair/dt
Q = dVwater/dt = -dVair/dt
Q = Po*Vo/P^2 * dP/dt
So, C = Po*Vo/P^2.
If the predcess is not isothermal, you start with
PoVo^n = P*V^n and arrive at
C = Vo*Po^(1/n) / [n * P^((n+1)/n)]
I've got the block diagram down for the most part. I had just needed information about the discharge of a system. I'm squared away now, except for the capcitance of the tank which I am not sure about. I ahve another thread that is covering that, however.
Thanks
Wanted to check a formula. I've got a gas bladder accumulator and I'm trying to verify how to determin the fluid capacitance of the tank. I've been using Po/(Vo*gamma), Po=Precharge Pressure, Vo=Volume at precharge, gamma = cp/cv (ratio of specific heats).
Could anybody tell me if this is...
Thanks a bunch. I think I understand exactly where I was having a problem. I was forgetting about velocity pressure.
For clarification, I didn't mean "system pressure" to be constant, rather I wanted to hold pressure constant at a certain point in the system.
If you or anyone else...
Hmm let's see if I can clarify. My main concerns are how to model the tank, and what to do about the exit loss.
The tank is a gas bladder accumulator with a certain precharge pressure, and a initial stored pressure. There's one inlet to the tank. The tank is connected off the branch line of...
I'm looking to find errors in my assumptions/methodology.
I'm currently trying to model a pump system in simulink. The system involves a centifugal pump, pressure tank (sff a tee from the main line, and outlet. Currently I'm using the pressure difference between pump discharge and the tank...
