Peak Voltage Sine Wave [RE-wrenches]

[Travis Creswell, Ozark Solar]

Hi Ray,

It's holding 170 peak volts and then some.  I did some testing just a few
minutes ago.  Using a spare SW4048 in my shop. I set up small battery bank
that needed charged.  Below are the results.

Watts and Power Factor came from a Brand 20-1850
HZ from a Fluke 79III (true RMS)
Volts and Peak Volts from a Fluke 87

After 2200 watts I took the Brand out of the loop as it's rated to measure
up to 1850 watts.  I also had to take the power strip out of the loop as it
sorta had a little meltdown (oops).
The wattage increments come from starting with MAX CHARGE AMPS on the SW4048
at 1 amp then increasing to 5 amps and going up in 5 amp increments each
time after that.  The last line of data is with the SW4048 MAX CHARGE AMPS
set to 25 amps plus 355 watts of incandescent lights.  So running at over
3200 watts which 115% of it's rating my Yamaha generator never dropped below
110 volts and it sine wave peak was 172.4.  The wattage numbers are the
middle of the road as the SW's charger is all the time up and down.  The
voltage stayed very constant, never varied more than .5 volts no matter what
the SW was doing.  The HZ never changed from 60.00.

Hopefully the data stays on the same lines. If you like I can forward and
Excel spreadsheet the data is entered into.


Max
Charge
Setting
Amps    Watts    Volts        PF        HZ        Peak Volts
0       0        119.8-121.1  0         60.00     168.8 
1       110      120.7       .4         60.00     166.8
5       540      120.0       .88        60.00     169.2
10      1150     119.0       .95        60.00     172.0
15      1750     119.3       .97        60.00     168.8
20      2200     117.8       .99        60.00     168.8
25      ?        110-118       ?        60.00     172.4


Travis Creswell
Ozark Energy Services




----------
>From: Ray Walters <remotech at taosnm.com>
>To: RE-wrenches at topica.com
>Subject: Peak Voltage Sine Wave [RE-wrenches]
>Date: Sat, Jun 15, 2002, 3:47 AM
>

>Travis:
>
>Is your fine Yamaha inverter/generator holding that 170 v peak at full load?
>
>and Bob-O:
>
>I'm not familiar with HF chargers, what do the cost? I'm also considering
>the booster transformer option to get better fuel efficiency when mating
>inferior generators with the DR series charger/ inverters. 
>
>
>
>Ray
>
>- - - -
>

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