keep it simple, read the voltage across one foot of wire.
Thanks, that doesn't seem very worth it.
Does the output decrease with the input voltage regardless of current?
So it wants 108V AC minimum but I give it ( loaded ) 109V DC ( but that's 71% of 109V AC or 78V? http://www.bcae1.com/voltages.htm ) ? If so then it doesn't seem like it should even be working but it is.
How can I measure the current coming out of the charger? I tried it with my DMM but it backfeeds from the battery bank, ZAP!
i'd still bypass the diodes but that's just me.
the output will not follow the input, however there is a lower limit, below which the 55ish volt open circuit voltage will drop.
the fact that it can deliver power to the battery means its working right.
There are a number of reasons it cannot deliver the full rated output below rated input, i can make this as complicated as you want...
If it can push 13A into 54.4V, it can only push 11.7 into 49V ( battery bank voltage )? Or it makes 13A at 120V but only 11.7A @ 108? Combine the two for even less power?
There is a product limitation (700 watts iirc?). as long as the input voltage is high enough that the duty cycle stays below 45% it will deliver up to 700 watts at whatever voltage. you may even be able to get 700 watts at 45 volts, but it probably is set up to not exceed 13 amps. (is that a blue potentiometer next to the heatsink in the corner? Tweak at your own risk!) 13 amps x 45 volts is 585 watts.
Is this a DC or AC turbine?
At the power shed ( 750ft from the turbine ) voltage was 109V to the charger and the batteries were are 50.1. Later when the sun was on the 800W of PV the battery voltage went up to 53V and the hydro voltage went up to 114.4V so there is a correlation between the voltage of the batteries and the loaded hydro voltage.
yes, there is a correlation, but the reasons will vary.