Fluke 434 Series Ii Application Note 2394340 Rev A

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Power quality analyzer
uses for electricians

Technology
at Work

Your troubleshooting has come to
a dead stop, while you wait for
an outside expert to do a power
quality analysis. Meanwhile, the
customer is fuming about downtime and asking when you’ll
“have it fixed.” Sound familiar?
Now you can prevent such situations, because you no longer
need to rely on an outside expert
or try to use a complicated power
quality meter.
With the Fluke 430 Series
Power Quality Analyzers, you can
perform important measurements
with the push of a button — it’s
that quick and easy. A dramatic
improvement in power quality
meters, the Fluke 430 series is
the first high quality, three-phase
tool that electricians can use at
the service entrance to investigate power quality problems.

Maintenance contracts
Preventive maintenance (PM)
contracting is a growing business,
but you need the right tools to
do it. The goal of PM is to keep
equipment and facilities in satisfactory operating condition by
providing for systematic inspection, detection, and correction
of problems in the early stages —
before they develop into major
defects or lead to catastrophic
failures. To meet that goal with
today’s systems, you must identify power quality problems in
their early stages. What tools are
you using for that purpose?
Unfortunately, some contractors use DMMs to troubleshoot
power quality problems “because
we don’t have time to learn to
use a power quality meter.”

Because customers need their
power quality problems solved
quickly, these contractors are
putting their maintenance contracts — and themselves — at risk.
Others would say that limited
time is exactly the reason to use
Fluke power quality meters. Steve
Uhrich, a supervisor with Valley
Electric, Seattle, WA, says his
crews make regular use of Fluke
power quality meters because

“We can take all the measurements with one tool. We don’t
have to be swapping around.
From an efficiency standpoint,
this works very well.”
What do the electricians in
Uhrich’s crew think about using
Fluke power quality meters? “I
have asked everyone in my crew,
‘If you could have only one meter,
what would you choose?’
Everyone had the same answer,
‘The Fluke power quality meter.’”

From the Fluke Digital Library @ www.fluke.com/library

Key functions

•

Why such a ringing endorsement
from electricians in the field?
Let’s start by looking at how a
power quality meter differs from
a DMM. Most electrical systems
support a range of voltage and
phase requirements (see diagram
on page 3). A DMM gives you
single measurements on single
phases in numeric format. The
430 Series Power Quality
Analyzers, on the other hand,
measures all three phases even
in 600 V CAT IV/1000 V CAT III
areas, allowing you to monitor
the entire system simultaneously.
It also graphically interprets the
data for you.
• Waveform display. The waveform is a picture worth 1,000
voltage readings. It allows you
to see what is actually going
on in the system.
Example: Observe flat-topping
to confirm an overloaded
transformer, so you can correct
the condition before the transformer overheats and fails.
Bonus: Some power quality
meters allow you to export
waveform captures for inclusion in reports.
• History. You can store waveforms from different times or
locations and recall them for
later comparison, analysis, or
data transfer.
Example: Capture inrush
current to troubleshoot motorrelated nuisance tripping.
• Analysis. You can trend such
measurements as RMS and
peak voltage, RMS and peak
current, crest factor, watts, VA,
VARs, power factor, displacement power factor, and
frequency. You can spot anomalies by looking at the trends
rather than taking dozens of
DMM measurements.
Example: See what’s causing
your peak load charges to be
as high as they are.
Bonus: You can display harmonics in a spectrum view or
in a table view.

2 Fluke Corporation

Multi-channel inputs.
You can compare
phases in real time.
Because current is so
dynamic, you must
compare phases simultaneously to be
accurate. (A DMMbased comparison of
Phase A to Phase B
requires two DMMs
and you’re still limited
to single measurements). Example:
Compare phases in
real time to see how
much unbalance a
motor is experiencing,
so you can correct the
unbalance before it
burns the motor up.

Standouts
The best power quality units
provide even more functionality.
For example, consider four useful
actions you can easily perform
with the Fluke 430 series:
• Trend automatically.
Just push a button,
and the Fluke 430
series will record and
analyze power quality
readings on all three
phases. When you
select a menu, the
Fluke 430 series
begins recording all
functions in that menu
automatically. You
don’t need to go
through elaborate
setups, choose
between types of
measurements to
record, or choose
between recording
and looking at the
readings. Example:
Push a button to trend
spikes and sags
related to specific
events or equipment.

Power quality analyzer uses for electricians

•

•

View on four channels.
Watch all three phases and
the neutral. No more switching back and forth and
juggling things in your head.
You can see the current on all
three phases and the neutral
at the same time. Example:
See if a motor is single-phasing, or see if a lighting ballast
is causing excess current in
the neutral.
Perform simultaneous captures. Capture voltage and

current waveform data on all
phases simultaneously.
Example: Set the Fluke 430
series to trigger on a voltage
sag. By looking at the waveform characteristics, you can
trace the event to a faulty
capacitor on a large AC unit.
• Perform system monitoring.
Capture system benchmarks
and then run an automatic
comparison on a regular basis.
Example: For routine PM, you
run an automatic comparison
to detect problems arise from
such causes as corroding
grounding connections, arcing
breaker contacts, leaking
power factor capacitors, or
motors in early stage winding
failure.
It also runs on battery for 7
hours. And let’s not forget the
impressive safety designed into
the Fluke 430 series. The Fluke
430 series meets several safety
standards, and it’s the only
handheld three-phase power
quality meter rated for 600 V
CAT IV and 1000 V CAT III for
service entrance use.

Starter

480 V
panel

000124

Power
factor
correction
Disconnect capacitors

Adjustable
speed motor
drive

Transfer
switch

UPS

Emergency
generator

480 V/
277 V
panel

Lighting

Fluke. Keeping your world
up and running.

Ground
system
Transformer

CAT IV
600 V

The Fluke 430 series can handle
all of your electrical measurement needs for preventive
maintenance, but how can it
help you gain new business?
Suppose a customer hired you
to install a new 75kVA distribution transformer and panel. You
can do that project and walk off
with your margin on it and hope
for another call. Or, you can turn
that project into a stream of new
projects by identifying other
needs — while you are still on
site. Example: You show the customer a graphical display of
voltage distortion to support the
need for work on the lighting
system.
Valley Electric uses a Fluke
power quality meter to gain new
business. Uhrich says, “We show
the customer a need, which they
often can’t understand. But when
we have a screen capture, we
can show the layperson what is
happening and they can understand it.”
This understanding builds
trust, which leads to repeated
sales. Uhrich says, “Using Fluke
power quality meters allows us
to get work we couldn’t otherwise get.” And, this is a
win-win. Uhrich says, “We help
customers avoid shutdown, and
we build our business.”

PDU

swit
Main switchgear

Utility
power

Building business on
power quality

CAT III
1000 V

120 V/
202 V
panel

Receptacle

Fluke Corporation
PO Box 9090, Everett, WA USA 98206

CAT II
300 V

Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands

The Fluke 430 is the first handheld power quality analyzer rated for use at the
service entrance (CAT IV). That means you can now prove where power quality
problems are coming from — is it the utility, a conflict in the line, or an equipment
malfunction? Without testing the utility power supply, you can’t know for sure.

For more information call:
In the U.S.A. (800) 443-5853 or
Fax (425) 446-5116
In Europe/M-East/Africa (31 40) 2 675 200 or
Fax (31 40) 2 675 222
In Canada (800) 36-FLUKE or
Fax (905) 890-6866
From other countries +1 (425) 446-5500 or
Fax +1 (425) 446-5116
Web access: http://www.fluke.com

3 Fluke Corporation

©2004 Fluke Corporation. All rights reserved.
Printed in U.S.A. 9/2004 2394340 A-US-N Rev A

Power quality analyzer uses for electricians



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