Yokogawa Power Primer
Date: Sat, 03 Jun 2006 08:54:20 -0600
From: Tesla list <tesla@pupman.com>
To: tesla@pupman.com
Subject: Yokogawa Power Primer
Original poster: Sparktron01@comcast.net
Folks
I got this excellent power measurement primer from Yokogawa Electric (Yokogawa
Corporation of America [YCA] for us in the 'States).
http://www.yokogawa.com/tm/tr/tm-tr0605_06.htm
I use Yokogawa WT20xx, PZ4000, and WT3000 powermeters/analyzers at work and they
are the "top of the metrology pyramid" for AC power measurement capability.
They are used pretty exclusively by power
utilities for substation/feeder loading surveys, large load power monitoring,
motor / transformer efficiency measurement, etc.
I have been to their SOTA Tier 2 Calibration facility in GA (Atlanta Region).
Their equipment is pricey (WT2010 single phase wattmeter is 10k, 2030 or 3000
is 20k + options), but excellent deals can occasionally be had on surplus
market. Alex Tajnsek picked up a serviceable "second generation" WT2533
(predecessor to WT20xx series) DSP wattmeter for $20 US (no joke) at the
Richmond salvage yard in a box buried under some tech manuals and miscellaneous
parts.
Yep, fully functional, and even had a still valid cal sticker on it... :^D
So guess what we are going to use to measure power on his TC's???
Best Regards
Dave Sharpe, TCBOR/HEAS
Chesterfield, VA. USA
Date: Sat, 03 Jun 2006 10:40:04 -0600
From: Tesla list <tesla@pupman.com>
To: tesla@pupman.com
Subject: Re: Yokogawa Power Primer
Original poster: "Dr. Resonance"
<resonance@jvlnet.com>
Dave:
What are the max power ratings for each of the three Yokogawa power measuring
instruments you mentioned? Any in the 10-20 kVA max range that could be used
with pole pig powered coils? Also, any for a range of 0-5 kVA for NST power
range testing applications?
Dr. Resonance
>Folks
>
>I got this excellent power measurement primer
from Yokogawa Electric
>(Yokogawa Corporation of America [YCA] for us in
the 'States).
>
>http://www.yokogawa.com/tm/tr/tm-tr0605_06.htm
>
>I use Yokogawa WT20xx, PZ4000, and WT3000
powermeters/analyzers
>at work and they are the "top of the metrology
pyramid" for AC power
>measurement capability. They are used pretty
exclusively by power
>utilities for substation/feeder loading surveys,
large load power
>monitoring, motor / transformer efficiency
measurement, etc.
>
>I have been to their SOTA Tier 2 Calibration
facility
>in GA (Atlanta Region). Their equipment is
pricey (WT2010 single phase
>wattmeter is 10k, 2030 or 3000 is 20k + options),
but excellent deals can
>occasionally be had on surplus market. Alex
Tajnsek picked up a
>serviceable "second generation" WT2533
(predecessor to WT20xx series)
>DSP wattmeter for $20 US (no joke) at the
Richmond salvage yard in
>a box buried under some tech manuals and
miscellaneous parts.
>
>Yep, fully functional, and even had a still valid
cal sticker on it... :^D
>
>So guess what we are going to use to measure
power on his TC's???
>
>Best Regards
>Dave Sharpe, TCBOR/HEAS
>Chesterfield, VA. USA
>
>
Date: Sat, 03 Jun 2006 15:54:33 -0600
From: Tesla list <tesla@pupman.com>
To: tesla@pupman.com
Subject: Re: Yokogawa Power Primer
Original poster: Sparktron01@comcast.net
DC
The WT2010 (single phase) will read up to 600V, and 30A directly (at 240VAC
7.2kW without PT's or CT's). WT2030 has three "elements" (V and I inputs) and
can measure 3 phase power. Will use all standard
PT's an CT's so with math scaling can measure accurately to MegaWatts (NO BS).
Has on board integrator so it can also read load energy (from Watt-secs to
Mega-Watt Hours).
The key to the accuracy/repeatability of instrument is the current measuring
shunt (NIST traceable -- 6 milliohms) section in the instrument plus use of
separate farady cages between V and I inputs and digital
sections for noise and EMI/RFI isolation and rejection.
Bandwidth is DC and 2Hz to 500KHz, 16Bit A/D section 0.03% of reading +0.03% of
range basic instrument accuracy. A QUALITY built instrument, ideal for
production / field use. I'm not aware of another
instrument by ANY manufacturer that comes close to its specifications for
typical electrical power measurements. That's why it is king (literally) among
utilities.
See below URL for more info on unit.
http://www.yokogawa.com/tm/wtpz/wt2010/tm-wt2010_01.htm
I have used these instruments for better then 10 years, and they are in a league
by themselves.
Best Regards
Dave Sharpe, TCBOR/HEAS
Chesterfield, VA. USA
-------------- Original message ----------------------
From: "Tesla list" <tesla@pupman.com>
> Original poster: "Dr. Resonance" <resonance@jvlnet.com>
>
> Dave:
>
> What are the max power ratings for each of the
three Yokogawa power
> measuring instruments you mentioned? Any in the
10-20 kVA max range
> that could be used with pole pig powered coils?
Also, any for a
> range of 0-5 kVA for NST power range testing
applications?
>
> Dr. Resonance
>
> >Folks
> >
> >I got this excellent power measurement primer
from Yokogawa Electric
> >(Yokogawa Corporation of America [YCA] for us
in the 'States).
> >
> >http://www.yokogawa.com/tm/tr/tm-tr0605_06.htm
> >
> >I use Yokogawa WT20xx, PZ4000, and WT3000
powermeters/analyzers
> >at work and they are the "top of the metrology
pyramid" for AC power
> >measurement capability. They are used pretty
exclusively by power
> >utilities for substation/feeder loading
surveys, large load power
> >monitoring, motor / transformer efficiency
measurement, etc.
> >
> >I have been to their SOTA Tier 2 Calibration
facility
> >in GA (Atlanta Region). Their equipment is
pricey (WT2010 single phase
> >wattmeter is 10k, 2030 or 3000 is 20k +
options), but excellent deals can
> >occasionally be had on surplus market. Alex
Tajnsek picked up a
> >serviceable "second generation" WT2533
(predecessor to WT20xx series)
> >DSP wattmeter for $20 US (no joke) at the
Richmond salvage yard in
> >a box buried under some tech manuals and
miscellaneous parts.
> >
> >Yep, fully functional, and even had a still
valid cal sticker on it... :^D
> >
> >So guess what we are going to use to measure
power on his TC's???
> >
> >Best Regards
> >Dave Sharpe, TCBOR/HEAS
> >Chesterfield, VA. USA
> >
Date: Sat, 03 Jun 2006 15:55:09 -0600
From: Tesla list <tesla@pupman.com>
To: tesla@pupman.com
Subject: Re: Yokogawa Power Primer
Original poster: "BRIAN FOLEY"
<ka1bbg@verizon.net>
Hi, well it will be interesting to see what results comes up! and to compare to
other methods of measuring that has been done. cul brian
f.
----- Original Message -----
From: "Tesla list" <tesla@pupman.com>
To: <tesla@pupman.com>
Sent: Saturday, June 03, 2006 10:54 AM
Subject: Yokogawa Power Primer
> Original poster: Sparktron01@comcast.net
>
> Folks
>
> I got this excellent power measurement primer
from Yokogawa Electric
> (Yokogawa Corporation of America [YCA] for us in
the 'States).
>
>
http://www.yokogawa.com/tm/tr/tm-tr0605_06.htm
>
> I use Yokogawa WT20xx, PZ4000, and WT3000
powermeters/analyzers
> at work and they are the "top of the metrology
pyramid" for AC power
> measurement capability. They are used pretty
exclusively by power
> utilities for substation/feeder loading surveys,
large load power
> monitoring, motor / transformer efficiency
measurement, etc.
>
> I have been to their SOTA Tier 2 Calibration
facility
> in GA (Atlanta Region). Their equipment is
pricey (WT2010 single phase
> wattmeter is 10k, 2030 or 3000 is 20k +
options), but excellent deals can
> occasionally be had on surplus market. Alex
Tajnsek picked up a
> serviceable "second generation" WT2533
(predecessor to WT20xx series)
> DSP wattmeter for $20 US (no joke) at the
Richmond salvage yard in
> a box buried under some tech manuals and
miscellaneous parts.
>
> Yep, fully functional, and even had a still
valid cal sticker on it...
:^D
>
> So guess what we are going to use to measure
power on his TC's???
>
> Best Regards
> Dave Sharpe, TCBOR/HEAS
> Chesterfield, VA. USA
Date: Sat, 03 Jun 2006 18:24:53 -0600
From: Tesla list <tesla@pupman.com>
To: tesla@pupman.com
Subject: RE: Yokogawa Power Primer
Original poster: <dhmccauley@easternvoltageresearch.com>
Dave,
I have used a PZ4000 Power Analyzer to do some measurements on my DRSSTC
systems, however, it was quite susceptible to radiated noise from the DRSSTC and
frequently locked up and rebooted at times. Not sure how other units would
react under similar circumstances . . .
Dan
Date: Sat, 03 Jun 2006 20:40:04 -0600
From: Tesla list <tesla@pupman.com>
To: tesla@pupman.com
Subject: RE: Yokogawa Power Primer
Original poster: Sparktron01@comcast.net
Hi Dan,
-------------- Original message ----------------------
From: "Tesla list" <tesla@pupman.com>
> Original poster: <dhmccauley@easternvoltageresearch.com>
>
> Dave,
>
> I have used a PZ4000 Power Analyzer to do some
measurements on my DRSSTC
> systems, however, it was quite susceptible to
radiated noise from the DRSSTC
> and frequently locked up and rebooted at times.
Not sure how other units
> would react under similar circumstances . . .
>
> Dan
>
---------------------------------------------------------------
Not sure the cause of the lockups. PZ4000 has a higher bandwidth (10Mhz if
memory is right), 12 bit A/D and is more akin to a "bandwidth limited"
digitizing oscilloscope. I assume shielded cable(s) were used for input lines?
Only failure we ever had with Yokogawa equipment was a "HARD" failure (no
displays, "lights out-nobody's home" scenario). Which is good for preventing
taking questionable measurements in a production environment. >
>
> Best Regards
> Dave Sharpe, TCBOR/HEAS
> Chesterfield, VA. USA
Date: Sat, 03 Jun 2006 22:31:02 -0600
From: Tesla list <tesla@pupman.com>
To: tesla@pupman.com
Subject: Re: Yokogawa Power Primer
Original poster: "Dr. Resonance"
<resonance@jvlnet.com>
Thanks for the data Dave. Any idea on the cost for a new model WT2010?
Dr. Resonance
>DC
>
>The WT2010 (single phase) will read up to 600V,
and 30A directly
>(at 240VAC 7.2kW without PT's or CT's). WT2030
has three "elements"
>(V and I inputs) and can measure 3 phase power.
Will use all standard
>PT's an CT's so with math scaling can measure
accurately to MegaWatts
>(NO BS). Has on board integrator so it can also
read load energy
>(from Watt-secs to Mega-Watt Hours).
>
>The key to the accuracy/repeatability of
instrument is the current
>measuring shunt (NIST traceable -- 6 milliohms)
section in the instrument
>plus use of separate farady cages between V and I
inputs and digital
>sections for noise and EMI/RFI isolation and
rejection.
>
>Bandwidth is DC and 2Hz to 500KHz, 16Bit A/D
section 0.03% of
>reading +0.03% of range basic instrument
accuracy. A QUALITY built
>instrument, ideal for production / field use.
I'm not aware of another
>instrument by ANY manufacturer that comes close
to its specifications
>for typical electrical power measurements.
That's why it is king
>(literally) among utilities.
>
>See below URL for more info on unit.
>
>http://www.yokogawa.com/tm/wtpz/wt2010/tm-wt2010_01.htm
>
>I have used these instruments for better then 10
years, and they
>are in a league by themselves.
>
>Best Regards
>Dave Sharpe, TCBOR/HEAS
>Chesterfield, VA. USA
>
> -------------- Original message
----------------------
>From: "Tesla list" <tesla@pupman.com>
> > Original poster: "Dr. Resonance" <resonance@jvlnet.com>
> >
> >
> >
> > Dave:
> >
> > What are the max power ratings for each of the
three Yokogawa power
> > measuring instruments you mentioned? Any in
the 10-20 kVA max range
> > that could be used with pole pig powered
coils? Also, any for a
> > range of 0-5 kVA for NST power range testing
applications?
> >
> > Dr. Resonance
> >
> > >Folks
> > >
> > >I got this excellent power measurement primer
from Yokogawa Electric
> > >(Yokogawa Corporation of America [YCA] for us
in the 'States).
> > >
> > >http://www.yokogawa.com/tm/tr/tm-tr0605_06.htm
> > >
> > >I use Yokogawa WT20xx, PZ4000, and WT3000
powermeters/analyzers
> > >at work and they are the "top of the
metrology pyramid" for AC power
> > >measurement capability. They are used
pretty exclusively by power
> > >utilities for substation/feeder loading
surveys, large load power
> > >monitoring, motor / transformer efficiency
measurement, etc.
> > >
> > >I have been to their SOTA Tier 2 Calibration
facility
> > >in GA (Atlanta Region). Their equipment is
pricey (WT2010 single phase
> > >wattmeter is 10k, 2030 or 3000 is 20k +
options), but excellent
> deals > >can
> > >occasionally be had on surplus market. Alex
Tajnsek picked up a
> > >serviceable "second generation" WT2533
(predecessor to WT20xx series)
> > >DSP wattmeter for $20 US (no joke) at the
Richmond salvage yard in
> > >a box buried under some tech manuals and
miscellaneous parts.
> > >
> > >Yep, fully functional, and even had a still
valid cal sticker on
> it... > >:^D
> > >
> > >So guess what we are going to use to measure
power on his TC's???
> > >
> > >Best Regards
> > >Dave Sharpe, TCBOR/HEAS
> > >Chesterfield, VA. USA
> > >
Date: Mon, 12 Jun 2006 20:28:00 -0600
From: Tesla list <tesla@pupman.com>
To: tesla@pupman.com
Subject: Re: Yokogawa Power Primer
Original poster: Sparktron01@comcast.net
Hi DC.
I apologize for the long delay in responding. I was on vacation (attending my
son's wedding).
--------------------------------------------------
> Thanks for the data Dave. Any idea on the cost
for a new model WT2010?
--------------------------------------------------
The WT2010 and WT2030 have been superceded by the new WT3000 (0.02% of rdg +
0.02% of range basic accuracy; DC and 0.1Hz to 1.0MHz bandwidth, 16 bit A/D -
internal instrument bus). AFAIK the WT20xx series
is no longer available as a new purchase, however, I'll check and advise...
;^D
http://www.yokogawa.com/tm/wtpz/wt3000/tm-wt3000_01.htm
A new WT2010 listed for approximately 10K "out of the box" with 3 year factory
warranty. A serviceable "pre-owned" unit might be available in the instrument
surplus market for 3-5k (depending on instrument condition); however, they are
_very_ rarely found on the surplus market.
Alex T. was _extremely_ lucky to stumble onto a predecessor in the Richmond
"Yard"...
Best Regards
Dave Sharpe, TCBOR/HEAS
Chesterfield, VA. USA