I suggest looking into the rules published by your professional association in whatever province/state you are in. For example in British Columbia, Canada where I work APEGBC expressly prohibits the application and signature of a seal/stamp by a third party (page 21 of the below pdf, section...
VE1BLL, if the charge current into the battery is not very high there would still be a load dump, however the overall magnitude and time would likely be reduced as the energy available to generate the pulse is much lower. However, I should point out there will always be some current going...
I'm with VE1BLL, the prime culprit is a load dump caused by the battery charge current having no where to go. Basically, let's say you have a charge current of around 25Amps and someone opens the circuit. If you recall one of the 'constitutive equations' of electricity we have: V=L*(di/dt)...
Typically in this application you would actually have a DC/DC converter which extracts the power from the solar panels and charges the batteries. The DC/DC would provide MPPT (maximum power point tracking) to maximize the power extraction from the solar panels and also perform SAFE charging of...
This is likely due to excessive leakage in the power supplies Y-caps (part of the EMI filter). IEC-60950-1 limits this current to 3.5mA (A GFCI should trip at 6mA)... but that doesn't mean a 'economical' power supply built to a price is going to actually meet this standard, even if they say it...
Clyde38,
The current in the machine will have two components, the low frequency average current at the machine speed (which your hysteretic regulator is setting) and the high frequency ripple current at the PWM frequency. With regards to skin effect losses it is only the high frequency...
Unless someone has changed the internal wiring of the motor you should not need to change the wires with the tags.
To switch to 'Y' you would remove the shorting bar on the right vertical terminals and the black wires running from the bottom terminals to the left vertical terminals. Then...
Correct me if I'm wrong, but isin't the layout of the terminals the same as in the diagram from Siemens? (except for the rotation...
Looks like it is wired in YY right now.
When I size a drive for single phase operation I take the motors FLA and double it... then find a drive with that current rating.
So in your case, you should be looking for a drive with a maximum output greater than 50 Amps (25A * 2). The drive you selected (assuming I'm looking at the right...
