...@voyager.net
Subject: Re: [MBZ] OT: measuring Power Factor
To: Mercedes Discussion List mercedes@okiebenz.com
Date: Monday, January 25, 2010, 12:21 PM
LWB250 wrote:
We have very sophisticated devices we use for testing
and commissioning of generators (as well as for
troubleshooting
On Mon, 25 Jan 2010 08:13:22 -0800 Jim Cathey j...@windwireless.net
wrote:
If you can get a dual-trace oscilloscope picture of both the
voltage and amperage waveforms, superimposed, you can calculate
the degrees of shift between the peaks and get a power factor
that way.
That's what I did
Can you put on an ampprobe (clamp-on) to measure amps and measure
volts with a different meter (simultaneously) and use that data to do
the calculation?
With all these fancy digital handheld meters out there, is there a
clamp-on meter that will give you a power factor while clamped on a
...@gmail.com
Subject: Re: [MBZ] OT: measuring Power Factor
To: Mercedes Discussion List mercedes@okiebenz.com
Date: Monday, January 25, 2010, 9:55 AM
Can you put on an ampprobe (clamp-on)
to measure amps and measure
volts with a different meter (simultaneously) and use that
data to do
...@gmail.com
Subject: Re: [MBZ] OT: measuring Power Factor
To: Mercedes Discussion List mercedes@okiebenz.com
Date: Monday, January 25, 2010, 9:55 AM
Can you put on an ampprobe (clamp-on)
to measure amps and measure
volts with a different meter (simultaneously) and use that
data to do
LWB250 wrote:
We have very sophisticated devices we use for testing and commissioning of
generators (as well as for troubleshooting) that measure power factor among
other values, but you're talking about several thousand dollars for something
like this:
On Mon, 25 Jan 2010 11:02:19 -0600 Dieselhead 126die...@gmail.com wrote:
I can get amps with a clamp-on, volts with a voltmeter. Is there any
way to determine watts without rewiring a wattmeter inline?
Shut off other loads, record your house's kilowatt-hour meter's reading,
run your load
Can you put on an ampprobe (clamp-on) to measure amps and measure
volts with a different meter (simultaneously) and use that data to do
the calculation?
No. That gives you volt-amps, which is watts only if you assume
a 1.0 power factor. You have to do the multiplication on a
cycle-by-cycle
What I want to do is determine PF at hardwired 240 1 phase devices,
such as central air cond. compressor/condensor units. The Kill-A-Watt
is great for 110v devices. Is there any low-cost way to do that?
I designed a wattmeter circuit for the big generator, but I
haven't built it yet. You
For all you EE types out there
With all these fancy digital handheld meters out there, is there a
clamp-on meter that will give you a power factor while clamped on a
wire?
Hopefully you don't have to buy a $5000-8000 fluke to do this. The
Kill-A-Watt does it on 120v for $25-50 if you
For all you EE types out there
With all these fancy digital handheld meters out there, is there a
clamp-on meter that will give you a power factor while clamped on a
wire?
Hopefully you don't have to buy a $5000-8000 fluke to do this. The
Kill-A-Watt does it on 120v for $25-50 if you
With all these fancy digital handheld meters out there, is there a
clamp-on meter that will give you a power factor while clamped on a
wire?
No. You cannot measure power factor without simultaneously
measuring both instantaneous current and voltage. No clamp-on
measures any kind of voltage
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