Yokogawa CW500 Specifications
A Clear Path to
Electrical Power
Excellence!
CW500
Power Quality Analyzer
Bulletin CW500-01EN
Electrical power
measurement is a key for
innovation.
The Yokogawa CW500 is a
portable power meter that
utilizes a current clamp
sensor for use in the eld
enabling consumption
and power quality
measurement of the power
line.
By the navigation screen
of the unit, the connection
setting and detail setting of
the unit is simple and direct
by following the screens.
Keys which directly turn on
desired measuring screens
allow comfortance at the
use of eld.
Stored measured data are
easily accessed by a click
on the le with included
PC software.
Simplied power
measuring – Several direct
keys keep you simple and
direct access to Voltage/
Current/Power/Power factor/
Phase Angle/Frequency/
Integrated power/Demand by
values or by a trend graph.
Firmly capture line
power quality issue –
Captures short period power
malfunction conforming IEC
6100-4-30 Class S.
User support – Function of
Quick Start Guide to support
secure wiring and setting of
units.
Features
• Power Measure and Logging
• Power Quality Measuring
• User Support
• Analysis of Data and Report Generation
Power Measuring and Logging
• Simultaneously measures 3 CH Voltage input, 4 CH current
clamp-on probe input, 2 CH DCV input.
• Displays value list or trend graph screen of Instantaneous/
Average/Maximum/Minimum of Voltage/Current/Power/Power
factor/Phase Angle/Phase Advanced Capacitance Calculation
and DCV input.
• Integration Value of Active/
Reactive/Apparent Energy
is each displayed by
consumption and generation.
• Demand value can be
monitored by screens of
present power consumption
compared to aimed demand
power value.
User Support
Quick Start Guide Function:
• Start Guide Function supports secure wiring and setting
before measuring.
• Automatically recognize the type of current clamp-on probe.
Vector Display:
• Indicates Voltage and Current phase difference and values
between input channels of voltage and current.
• Checks whether the wiring is appropriate or not.
Power Quality Measuring
Analysis of Data and Report Generation
Measure Temporary Malfunction of Power Line
• Captures temporary malfunction phenomena of power
line which causes malfunction or destruction of devices
by types (Voltage swell, Voltage dip, Voltage interruption,
Transient overvoltage, inrush current) as an event by
high sampling rate of 24 µs and RMS calculation.
• Event data contains the type of malfunction, occurred
time or occurrence nish time, measured value and
waveform of voltage and current of all channels for
approx. 200 ms period.
• Measurement method conforms to IEC standard 61000-
4-30 Class S
Measure Continuous Malfunction of Power Line
Harmonics
• Measure and display graphs and list of up to the 50
Harmonic components of voltage, current and power for
each phase and in total.
Waveform
• Displays with up to 10 or 12 waveforms of voltage and
current for each CH.
Flicker
• Measures, 1 minute icker (Pst, 1 min),
short icker (Pst) and long icker (Plt).
Unbalance rate
• Displays voltage and current unbalance
rate on 3 phase wiring.
th
CW500Viewer (Included PC software)
• Automatically generates graph and report by simple
clicking on a le data displayed on screen.
• Uniform management of main unit settings
• Realtime measuring by USB communication.
Types of data
• Power data, Power quality event data, Main Unit Setting
data, Screen capture data.
Memory card and interface
• SD Memory card, USB communication, Bluetooth
communication (Available for USA, Canada and Japan only)
Function
CW500Function
Power Measuring
Power line and Input Channel: 3 CH Voltage,
4 CH for Current Clamp Probe.
1P2W (up to 4 system), 1P3W (up to 2 system),
3P3W2current (up to 2 system), 3P3W3current,
3P4W
Power measuring item:
Instantaneous, Average, Maximum and Minimum
values:
Voltage/Current/Power (Active, Reactive, Apparent)/Power
factor/ Phase Angle/Frequency/Calculated Phase Shift
Condensor/DC voltage value 2 CH.
Integration Value
• Energy (Active, Reactive, Apparent) each by
consumption and generation
• Demand (Occurrence of max. demand time, current
demand, estimated demand value)
Recording Interval Period:
1/2/5/10/15/20/30 second, 1/2/5/10/15/20/30 minute,
1 hour/2 hours
Recording method
Manual, time setting, period setting
List Display
Hems of measuring
values can be selected
with position.
Zoom Display
Zoom display can be
selected by 4 or 8
division.
Trend Graph
Trend graph of voltage/
current/power/power
factor/frequency/
advanced phase
condenser/DC voltage
4
Estimated Recording Length with 2 GB SD card.
Interval Power recording +Harmonics
1 sec. 13 days 3 days
1 min. Over 1 year 3 months
30 min. Over 10 years Over 7 years
• The recording length shortens according to the number
of power quality events.
• Only included SD memory card or dedicated SD
memory card is guaranteed.
Various Measuring Screen
• List display, Zoom display by 4 or 8 division,
Trend graph display
• Integration Value Display for Energy
• Demand List display of value,
Demand Graph display for change of period,
Demand Graph display for whole recording
Energy Display
List of Active, Apparent,
Reactive by consumption
or generation
5
Analysis and Report of recorded data
Demand measuring
Demand is the average power value of a specic period
(usually 30 minutes). Contract with the power supplier
conditionally concerns the maximum average power value
between period for the consumption fee. This function
supports how to maintain within the target consumption
by monitoring the estimated demand value to the setting
rate, with the maximum demand value.
List of Demand Value
Graph display of change on specic period
When the estimated demand
value line is displayed inside
this area, it mean that the
demand value will be over the
target value.
Analysis and report is enabled by simply clicking on the
desired data on software screen.
Analysis is capable by trend graph, average, maximum and
minimum value of voltage, current, power, power factor.
Report generating could be set by day time, night time,
working day, off day or monthly period.
Additionally energy data to quantity of crude oil barrels, or
to CO
can be converted.
2
Trend analysis graph
Sample of report
Estimated demand value
Graph display of whole demand trend
Max. demand value
Aimed target demand value
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