Yokogawa CW120, CW121 Data sheet

Models CW120,CW121 Model CW240 AP240E Data Analysis Program

AP240E Data Analysis Program

1

Bulletin CW-E

Realization of Power & Power Quality

Realization of Power & Power Quality

Management using a CW240

Management using a CW240

CASE 1

CASE 2

CASE 3

2

2

Get a view of energy consumption!

It is essential to measure energy and manage consumption of each sector such as
facility and production line for your energy saving activities and to minimize loss.

Contribute for improving productivity!

Constantly analyze productivity by managing unit consumption. Managing
voltage, current, electric power and power factor makes for good maintenance of
production facility.
Moreover, you can check operation management loss and enhance productivity.

Discover of electric power waste!

Measure and collect data of electric power consumption by short period.
The CW240 can figure out load of production process, and has the ability to check
wasteful time and current flow of standby load current.

CASE 4

Detect voltage fluctuation!

When trouble occurs on supply side of electric power, instantaneous voltage drop
can affect quality of produced goods at the factory. The CW240 is useful for
collecting data such as voltage fluctuation to prevent such problems.

Characteristics of CW240

 Simultaneous measurement of instantaneous value, electric energy, demand, harmonics

and voltage fluctuation.

 Simultaneous measurement of loads in 4 systems of up to 1P2W

Simultaneous measurement of loads in 2 systems of up to 1P/3P3W

 Data saving interval can be set from 1 waveform (for instantaneous measurement) to 1

hour.

 Measure up to 50th order harmonics
 4ch leakage current measurement using newly released clamp probe 96036
 Long time data logging by using compact flash memory.
 Multi language for the display (English, German, French, Italian, Spanish, Korean and

Chinese)

 2ch analog input (Optional)

Equipped with 4ch analog output (recorder output)

 AC adaptor for power supply. NiMH rechargeable battery and alkaline battery for

backup

Voltage input terminals

RS-232C connector

Current input terminals

●With protection against H/L reverse connection of current clamp-on probes

●With protection against connection of voltage cables

External control I/O
terminals

Analog I/O terminals
(Optional)

CW240

CW240

Protective cover

CW120 AP240E

Card ejection button

PC card slot

Starts/stops integration measurement.

System Configuration Block Diagram

CW240: Simultaneous measurement using two or more CW240 units

External contact signal

ENTER

START

&STOP

PC

Printer

START

&STOP

RS-232

Saves or prints the
measured data.

Makes a screen hard copy.

Returns to the TOP MENU.

Switches the voltage/current range to another.

Turns ON/OFF the backlight (locked when held down for a while).

Current input

(clamp)

CLAMP-ON POWER METER

DA output

(4 channels)

Analog input

(2 channels)

PC card

ENTER

External
control I/O
terminals

Voltage input

Battery holder lock switch

MV series: Recorder

510 series

Illuminance

meter

Battery holder

JUXTA

Temperature

converter

3

AC adaptor

LIGHT

START

&STOP

510 series Illuminance meter
Product of Yokogawa Meters & Instruments Corporation

MV series: Recorder and JUXTA
Product of Yokogawa Electric Corporation

Alkaline battery

TOP

ENTER

MENU

ESC

RANGE

RANGE

A

SAVE

DISP COPY

NiMH battery pack

Measurement of Instantaneous

Power

Investigation

Power Investigation Improves power Efficiency Through Detailed Data Coll

Measurement of Instantaneous

Value: For investigation of power consumption, maximum load factor and peak currentMeasurement of Instantaneous Value: For investigation of power consumption, maximum load factor and peak current

The CW240 can be used to carry out investigation regarding renewal of electric equipment such as transformers in
building, check load factors and demand factors, and to check current/voltage fluctuation at motor start-up.

(Example of screen display)

● Measurement elements : Voltage/current/electric power (active, reactive, apparent)/power factor/phase angle of each phase,

● Data collection time : 1/2/5/10/15/30 seconds, 1/2/5/10/15/30/60 minutes

Convenient

functions

average/minimum/maximum values of each measurement element.

One cycle (waveform), 100/200/500 ms (short time interval)

Use of the 3-wattmeter method enables display of instantaneous value of each
measurement element.

Allows switching data
from one to another
and saving data.

4

Solution

Food processing plant

Purpose : To review the current power equipment, and replace it

if necessary but with low investment cost

Solution 1 : Calculation of the amount of used water based on power

Solution 2 : Introduction of invert pump control

Power comparison before and after

implementation of the solution

14

12

10

8

6

Powe r (kw)

4

2

0

0:00

2:00

Investigation into Energy Saving at Factories and Buildings

Facility investigated: Pumps

consumption since flow meters are expensive

Power

measurement

before after

Water supply

pump

Water supply

pump

AP240 Suitable for
Data Analysis!

4:00

6:00

8:00

10:00

12:00

Time

14:00

16:00

18:00

20:00

22:00

CW240

Clamp-on power meter

Water supply

pump

Water supply

pump

Energy saving & Reduce electricity bill

Demand Measurement:

wer Quantity Measurement:

ection.

CW240

Power Quantity Measurement:

For Power-Saving Diagnosis and Data Collection for ISO14001Power Quantity Measurement: For Power-Saving Diagnosis and Data Collection for ISO14001

The CW240 can measure and display the power quantity consumed up to the specified
time (from the start of integration until the end).

● Measurement elements : Active power quantity, regenerative power quantity, reactive power

quantity (leading/lagging)

● Data collection time : 1/2/5/10/15/30 seconds, 1/2/5/10/15/30/60 minutes

Convenient

functions

The number of display digits and display units can be selected.

●Standard (Voltage/current range is selected according to the phase)

●Arbitrary (Decimal point position and display unit can be specified)

●Auto (Decimal point position and display unit are selected automatically according to

the integration result)

Demand Measurement:

For Review and Investigation on Contract DemandDemand Measurement: For Review and Investigation on Contract Demand

● Measurement elements : Maximum power demand required since the start of logging measurement

and the time it occurs

Active power, reactive power (lag), power factor
Active power quantity (consumption, regeneration), reactive power

quantity (lagging/leading)

Convenient

functions

Normally, the demand time limit is set to 30 minutes in the
contract with a power company.
However, the CW240 allows you to set the desired demand
time limit in units of seconds/minutes.

Demand time limit setting : 1/2/5/10/15/30 seconds, 1/2/5/10/15/30/60 minutes

(Example of screen display)

CW120 AP240E

(Example of screen display)

● Demand

Demand time limit : Length of time set to obtain the average power (normally 30 minutes)
Demand power : Average power during the demand time limit

Solution

Energy Saving and Maintenance for Electric Equipment at Factories and Buildings

Investigation at
offices

●Air conditioning

●Lighting

●Office automation

equipment

●Elevator

Investigation at
production
departments

●Power quantity

●Investigation of

electric power
consumption rate

●Production

quantity

●Power factor

Elevator

Distribution

board

Cellulametal floor duct

Distribution board

Distribution

board

Personal computer

Control

panel

Lighting

Personal computer

CW240 solution (building)

1. For energy investigation/control for each application
and floor

2. For simple investigation for each shop and tenant

3. Diagnosis of operational status of equipment such as
elevator and air conditioner

4. Diagnosis regarding renewal of electric equipment

CW240 solution (factory)

1. Diagnosis of operational status of equipment such as

production equipment and air conditioner

2. For investigation of electric power consumption rate for
each production line

3. For energy investigation/control for privately-owned
electrical power facilities

4. For control of monthly target energy consumption

5

Power Supply

● Harmonics for analysis : 1st to 50th

● Display data : List, bar graph (linear/log), vector (inflow/outflow judgment)

● Measurement elements : Level, content, phase angle (voltage/current/electric power of each harmonic), aggregate value (voltage,

current, electric power, power factor), aggregate harmonic distortion factors (THD-F or THD-R) of
voltage/current

● THD-F : Distortion factor for the fundamental wave, THD-R: Distortion factor for all rms values voltage/current

● Data collection time : 1/2/5/10/15/30/60 minutes

Quality Control

Harmonic Measurement

In many cases, inverter power supplies are used to drive air-conditioners and compressors. These power supplies
cause distortions in voltages and currents, leading to malfunctions and power loss. Therefore, investigation and
control of influences on the main power supplies by harmonics is necessary.

Discovers Failures in Power Supply Lines.

(Example of graph display) (Example of list display)

Convenient

functions

The harmonic whose data is
required to be saved can be selected.
Inflow/outflow of harmonics can be
checked.

●THD-F

Distortion factor for the fundamental wave, THD-R: Distortion
factor for all rms values

(Influences by harmonics)

Category Device Influence type

Power devices

6

Electronic/electrical
household
appliances

Solution

Capacitor, reactor

Transformer
Fuse, breaker

Induction motor

Protective relay
Electrical household
appliances
Fluorescent lamp,
mercury-arc lamp
Computer
Electronics device

Overheat, burn, vibration, noise due to
excessive current
Overheat, noise, increase in core/copper loss
Blow-out, malfunction due to excessive
current
Periodic fluctuation of revolution speed,
overheat, increase in loss
Malfunction
Flickering, noise, malfunction, breakdown

Burn of stabilizer/capacitor, flickering

Malfunction, out of control, breakdown
Malfunction of automatic control part

Improvement of Harmonic Measurement and Diagnosis

: Inflow of harmonic

: Outflow of harmonic

Explanation of vector diagram

● Vector length indicates the apparent
power of each harmonic in
proportion to that of the fundamental
harmonic.

● The horizontal axis shows active
power and the vertical axis indicates
reactive power. They are shown in a
logarithm.

● Frequencies shown are those of the
measurement element actually
measured.

Printing plant

Purpose: To investigate the cause for periodic breakdown of printing machine

Measurement: Advantages obtained by using the CW240

Result: Occurrence of harmonics in 5th and 7th was discovered!

Before

solution

Countermeasure: Installation of transformer filter for 5th and 7th harmonics

After

solution

It may be caused by harmonics generated in the power lines.

●

Compact and easy to carry ● Measurement of up to the 50th harmonic

●

Long-term data collection ● Vector diagram display

In addition, it became clear that harmonics are generated due to loads inside the factory.
In perticular, the 5th harmonic causes adverse effects such as burn-out of the serial reactor in the
capacitor used to improve the power factor.

Time series for

each harmonic for current 1

Discovery

of

the cause

Time series for

each harmonic for current 1

Content for

each harmonic for current 1

Content for

each harmonic for current 1

Total harmonics distortion for

current 1

Total harmonics distortion for

current 1

Confirmation

of

inflow

500kV transformer

Effects of countermeasures: The contents of 5th and subsequent harmonics decreased drastically
and the distortion ratio also dropped below 30%, resulting in elimination of breakdowns.

Waveform Measurement

Measurement results

● Measurement elements :

Voltage of each phase, current of each phase
Voltage and current of each phase

● Data saving format :

Binary (can be converted to CSV format
using a standard application program)

The scale of the vertical axis can be changed from x1/3 to x20.

Easy to understand waveform distortion.

Voltage Fluctuation Measurement

The CW240 detects dates/times of when fluctuations occur, fluctuation type,
channels where they occur, rms values, and periods between start and end. The
voltage threshold is set, and fluctuations exceeding the threshold are detected.

● Measurement element : Voltage dip (voltage drop), voltage swell (voltage rise),

instantaneous power failure

lData saving : Detected based on the voltage rms value of one waveform.

Up to 100 data sets can be saved.

CW240

CW120 AP240E

Normal period Fluctuation period Normal period

Measurement results

Convenient

functions

It is possible to provide a voltage
difference between start and end
by setting a hysteresis.

Failures in power supply lines

Item Phenomenon Problem

Voltage dip
(Sag, voltage drop)

Voltage swell
(Voltage rise)

Instantaneous
power failure
(Instantaneous stop
of power supply)

A voltage drop occurs for a short
time due to the occurrence of a large
inrush current, for example, when a
motor is started.
Voltage increases instantaneously,
for example, when lightning occurs
or when a power line with a heavy
load is turned ON/OFF.
Power supply is stopped
instantaneously or for a short/long
time, for example, when a problem
occurs in the power supply
(suspension of power supply due to
lightning, etc.) or due to the trip of a
breaker caused by short circuits in
the power supply, etc.

Solution

Quality check for power supplies used in
semiconductor manufacturing equipment in
accordance with the SEMI guidelines

Measure stability of the voltage of supplied power according to
SEMI S2-0302 (Environmental, Health, and Safety Guideline for
Semiconductor Manufacturing Equipment). If a sag (default:
within 2%) occurs, the wafer is removed from the line for
inspection so daily quality check for power supplies is necessary.

Item
Swe: Swell
Dip: Dip

Decrease of power supply voltage
may cause devices to stop or reset
operations.

Increase of power supply voltage
may cause devices to stop or reset
operations.

Instantaneous power failure may
cause devices to stop or reset
operations. Recently, various
preventive measures have been
taken for computers, thanks to
widespread use of UPS
(uninterruptible power source).

Int: Instantaneous

power failure

Occurrence date

Channel

I: Start 0: End

Power Supply Quality Check at Various Places

SEMI: Semiconductor Equipment and Materials International
SEMI guidelines are used at the time the contract is made, to
evaluate the safety of semiconductor manufacturing equipment
when exporting it from Japan to the USA.

rms value

7

Detection period

Voltage fluctuation image

Normal period Fluctuation period Normal period

Measurement

results

Advantages obtained by using the CW240

●Compact and easy to carry

●Detects voltage fluctuations in each cycle.

Instantaneous power failures and voltage
fluctuations are monitored continuously, and
the occurrence and recovery times are
reported.

Voltage level
(100% as reference)

Fall (rise) time

50% ~

Within 0.2 sec.

Result:

Occurrence date/time of the sag can
be reported so that semiconductor
quality can be improved.

Other:

Verification of instantaneous power failure
preventive measures implemented in
semiconductor manufacturing equipment

70% ~

Within 0.5 sec.

80% ~

Within 10 sec.

90% ~
110%

No limit

~ 120%

Within 0.5 sec.

Convenient

functions

Measures Loads in Four Systems Simultaneously.

The CW240 enables simultaneous measurement of loads in four systems in the case of the
single-phase 2-wire system, and in two systems in the case of the single/three-phase 3-wire
system (common to voltage).
Current clamp probe/range can be set for each system.

This allows measurement according to the current flowing in each load.

(example)

200A

100A

10A

2A

Power
supply

1

N

Load 1

Load 2

Load 3

Load 4

NU1CH1 CH2 CH3 CH4

8

CW240 side Example of single-phase 2-wire system

Reduces Operation Errors at Work Site.

Wiring check function

Prior to start of measurement, the CW240 checks whether wiring is correct. Wiring errors, reverse connection of
current clamps, and phases to be checked can be displayed in a vector diagram.

Checking the
phases displayed in
a vector diagram

OK/NG judgment Measured values

Setting check function

Settings made for data saving can be checked in the screen. This prevents data acquisition errors that may occur due
to mistakes in voltage range setting, current clamp selection or data save item selection.

Phase/range etc.

Data save item

Measurement start/end

To change the settings, press this button to display the setting screen.

Saving a Large Amount of Data

Use of an external memory card (compact flash)
makes it possible to save a large amount of data.
A memory card
the data is saved in CSV format.
In addition, the CW240 has a 1MB internal
memory.

*1: Memory cards purchased from Yokogawa should be

used.

*2: Data shorter than one second is saved in binary

format.
Screen copies can be made in bitmap format.
Voltage fluctuation data is saved in text format.

(*1)

of up to 2GB can be used, and

(*2)

Leakage Current Measurement

●Storage period when PC card (512MB) and internal memory (1MB) are used

When storing all items of measured data, measured power quantity/demand data, and measured
voltage fluctuation data

Wiring

Number of storable data items

Recording medium

PC card
(512MB)

Internal memory
(1MB)

When storing all items of measured data, measured power quantity/demand data, all items of
measured harmonics data, waveform data and measured voltage fluctuation data

Wiring

Number of storable data items

Recording medium

PC card
(512MB)

Internal memory
(1MB)

Interval time

1s

1min

60min

1s

1min

60min

Interval time

1min

60min

1min

60min

1P2W
4 systems

168

9 hrs

24 days

1471 days

8 min

8 hrs

21 days

1P2W
4 systems

5642

17 hrs

44 days

12 min

12 min

1P3W
2 systems

196

8 hrs

21 days

1304 days

7 min

7 hrs

18 days

1P3W
2 systems

5052

19 hrs

49 days

13 min

13 hrs

1P3W31

114

14 hrs

37 days

2223 days

12 min

12 hrs

32 days

1P3W31

3758

26 hrs

65 days

19 min

19 hrs

3P3W21
2 systems

208

8 hrs

20 days

1232 days

7 min

7 hrs

17 days

3P3W21
2 systems

6888

14 hrs

35 days

8 min

8 hrs

3P3W31,
3P4W

138

12 hrs

30 days

1852 days

10 min

10 hrs

26 days

3P3W31,
3P4W

4390

22 hrs

56 days

16 min

16 hrs

3P4W41

142

12 hrs

30 days

1802 days

10 min

10 hrs

26 days

3P4W41

5002

19 hrs

49 days

13 min

13 hrs

3P3W
+1P3W

216

7 hrs

19 days

1188 days

6 min

6 hrs

17 days

3P3W
+1P3W

7504

13 hrs

32 days

7 min

7 hrs

CW240

CW120 AP240E

- External magnetic field effect is 0.002A or less, at 400A/m -

Yokogawa's proprietary technology has achieved a magnetic field
impact amount of 30 ppm even in adjacent power lines. (At 100A)
Use of the 2A current clamp probe (96036) enables measurements
with 200.0 mA range.

Current clamp probe 96036

Analog Input/Output

- Besides power data -

Analog data such as temperature and illuminance data can be
saved simultaneously with power data by using the analog input
function (2 channels).
The available input ranges are 100 mV/1 V/5 V. In addition, the
analog output function (4 channels) acquires data to an external
recorder, allowing data duplexing. Output is ±1 VDC.
(The analog input/output function is optional.)

Digital illuminance meter 51001

Other Convenient Functions

Besides the AC adapter, it is possible to use a NiMH battery pack (94004) or alkaline

Power supply backup

Multi-lingual support

batteries (six AA batteries).
The CW240 will continue to operate even if supply of power is interrupted.

The CW240 supports Japanese, English, German, French, Spanish and Italian (available
in the near future).

1R

2S

Power

3T

supply

N

NU1U2U3CH1 CH2 CH3 CH4

CW240 side Three-phase 4-wire 4-current

Voltage,
current,
power etc.

Load

Temperature,
illuminance etc.
Analog output
2 channels

9

Manual data saving

Screen hard copy

Zoom function

The data for the selected items can be saved or printed using the SAVE key.
However, it cannot be saved during integrating measurement (and during standby).

The currently displayed screen can be saved or printed using the DISP COPY key.
Files are saved in bitmap format.

The measured data for the selected five items can be zoomed in.
The items to be displayed can be selected from instantaneous value and measured power
quantity data.

Specifications

10

 Inputs

Item Voltage Current

Input type Resistive potential division

Rated value
(range)

Phase to be
measured

Number of systems
to be measured

Input resistance

Maximum allowed
input (continuous)

A/D converter

150.0 V

300.0 V

600.0 V

1000 V

Single-phase 2-wire, single-phase 3-wire, single-phase 3-wire 3-current (current in neutral
line), three-phase 3-wire 2-current (2-power meter method), Three-phase 3-wire 3­current (3-power meter method), three-phase 4-wire, three-phase 4-wire 4-current
(current in neutral line), Scott connection (three-phase 3-wire + single-phase 3-wire)

With the same voltage
Single-phase 2-wire: 4 systems, single-phase 3-wire: 2 systems, three-phase 3-wire 2­current: 2 systems

Approx. 1.3MΩ Approx. 100KΩ (CW240 main unit)

1000 Vrms

Voltage/current input simultaneous conversion, PLL synchronized 128 samples/period,
16-bit resolution

Clamp detection

Varies with the clamp and range used.

96036 (2A) 200.0/ 500.0mA/1.000/ 2.000A

96033 (50A) 5.000/10.00/ 20.00/50.00 A

96030 (200A) 20.00/50.00 /100.0/200.0 A

96031 (500A) 50.00/100.0/ 200.0/500.0 A

96032 (1000A) 200.0/500.0 A /1.000 kA

96034 (3000A range) 300.0/750.0 A /1.500/3.000 kA

(2000A range) 200.0/ 500.0 A/1.000/2.000 kA

(1000A range) 100.0/ 200.0/500.0 A/1.000 kA

96035 (3000A range) 300.0/750.0 A /1.500/3.000 kA

(300A range) 30.00/75.00 /150.0/300.0 A

96036 (2A) 20Arms

96033 (50A) 130Arms

96030 (200A) 250Arms

96031 (500A) 625Arms

96032 (1000A) 700Arms

96034 (3000A range) 2400 Arms (

(2,000A range) 2400Arms

(1000A range) 1200 Arms

96035 (3000A range) 3600 Arms

(300A range) 360 Arms

 Measurement Functions

Item Voltage

Method Digital sampling

Frequency range 45 to 65Hz (Measurement element is selected from U1, U2 and U3)

Crest factor Rated input: 3 (however, 1.8 when 1000V range is used)

±

Accuracy

Power factor
influence

Reactive factor
influence

Active input range 5 to 110% of each range (Max. 100% in the case of 1000V range)

0.2%rdg.

±

0.1%rng.

—

—

Voltage / current: 0.4 to 130% of each range

Display range

Temperature
coefficient

Display updating
interval

Power (active, reactive, apparent): 0 to 130% of each range

Harmonic level: 0 to 130% of each range
Frequency: 40 to 70Hz

±0.03%rng/°C ±0.05%rng/°C

Approx. 0.5 seconds

Current / Active power / Reactive power (reactive power meter method is used)

96030, 96031, 96033, 96036 ±0.6%rdg.±0.4%rng.
96032, 96034, 96035 ±1.0%rdg.±0.8%rng.

96030 ±1.0%rng (45 to 65Hz, power factor =±0.5)
Other than 96030 ±2.0%rng (45 to 65Hz, power factor =±0.5)

96030 ±1.0%rng. (
Other than 96030 ±2.0%rng (

45 to 65Hz, reactive factor =±0.5
45 to 65Hz, reactive factor =±0.5

(Zero suppression when below 0.4% of the range)

(Zero suppression when below 0.17% of the range
rating).

3600 Arms for 10 minutes

 Equations

Active power, reactive power, apparent power, power factor and phase angle are
measured for each phase.
The average, maximum and minimum values of those obtained during
integrating measurement are calculated.

T

T

1

1

Voltage rms

Current rms

Active power

Reactive power 1 When the reactive power meter method is used

 Equations for Each Phase

Measurement
Items

Average voltage

Umrms = um(t)2dt =

Imrms = im(t)2dt =

Pm = {um(t) ҂im(t)}dt =

Qm = {um(t)҂im(t + )}dt =

Wiring

∫

T

0

T

1

∫

T

0

T

1

∫

T

0

T

1

∫

T

0

Equation

Average current

Active power

Reactive power 2

)

Apparent power

Power factor

Phase angle

*1: Line voltage is measured in the case of 3-phase 3-wire system, and phase voltage in the case of 3-phase 4-wire

*2: I2 for three-phase 3-wire system (2-power meter method) is calculated by vector operation.
*3: This equation is applicable when the reactive power meter method is not used. Even in this case, the value is

*4: In the case of three-phase 3-wire system, the phase voltage from the virtual neutral point is used to calculate

*5: Multiplied by the polarity of Q for each phase calculated by the reactive power meter method.
*6: In the case of distorted waves and unbalanced inputs, there may be differences from other instruments that

)

)

(*3)

Q = S

S = U҂I

When the reactive
power meter method
is not used

When the reactive
power meter method
is used

(*5)

In the case of distorted waves, there may be differences from other instruments that
employ different measurement principles.

system.

multiplied by the polarity of Q for each phase calculated by the reactive power meter method.

each phase power.

employ different measurement principles.
P1, P3, Q1, Q3, S1, S3, PF1 and PF3 are obtained during calculations carried out by the 2-power meter
method, and do not exist as physical values.

2

(t)

u

∑

m

T

t=0

T

1

2

i

(t)

∑

m

T

t=0

T

1

{um(t)҂im(t)}

∑

T

t=0

T

T

1

∑

T

4

t=0

—

—

—

2

2

P

—

(*5)

—

{

um(t)҂im(t + )

Symbol

Uave

Iave

∑

P

∑

Q

∑

S

∑

PF

∑

PF

∑

PA

T

}

4

Single-phase

3-wire

(U1 + U2)/2

(1 + I2)/ 2

P1 + P2

Q1 + Q2

S1 + S2

Three-phase

2-current

∑S2 –∑P

∑

∑

∑

3-wire

P1 + P3

3

(S1 + S3)

2

PF =

PF =

PA = cos

*6

∑

P

∑

S

∑

P

–1

∑

u(t): Voltage input signal
i(t) : Current input signal
T:One cycle of input signal
m:Each phase

Three-phase

3-wire

3-current

(U1 + U2 + U3)/3

(I1 + I 2 + I3)/ 3

P1 + P2 + P3

2

Q1 + Q2 + Q3

S1 + S2 + S3

∑

P

2

2

+

∑

Q

PF

rdg: Reading rng: Range

 Range Configuration for Active Power

For single-phase 2-wire system (X2 for single/three-phase 3-wire system, X3 for three-phase 4-wire system)

 When 96030 / 96031/ 96032 / 96033/ 96036 is used

Voltage range

96036(2A) 96033(50A)

200.0 mA 500.0 mA 1.000 A 2.000 A 5.000 A 10.00 A 20.00 A 50.00 A 100.0 A 200.0 A 500.0 A 1.000 kA

150.0 V 30.00 W 75.00 W 150.0 W 300.0 W 750.0 W 1.500 kW 3.000 kW 7.500 kW 15.00 kW 30.00 kW 75.00 kW 150.0 kW

300.0 V 60.00 W 150.0 W 300.0 W 600.0 W 1.500 kW 3.000 kW 6.000 kW 15.00 kW 30.00 kW 60.00 kW 150.0 kW 300.0 kW

600.0 V 120.0 W 300.0 W 600.0 W 1.200 kW 3.000 kW 6.000 kW 12.00 kW 30.00 kW 60.00 kW 120.0 kW 300.0 kW 600.0 kW

1.000 kV 200.0 W 500.0 W 1.000 kW 2.000 kW 5.000 kW 10.00 kW 20.00 kW 50.00 kW 100.0 kW 200.0 kW 500.0 kW 1.000 MW

 When 96034 / 96035 is used

Voltage range

96035_2(300A)

30.00 A 75.00 A 150.0 A 300.0 A 100.0 A 200.0 A 500.0 A 1.000 kA 2.000 kA 300.0 A 750.0 A 1.500 kA 3.000 kA

150.0 V 4.500 kW 11.25 kW 22.50 kW 45.00 kW 15.00 kW 30.00 kW 75.00 kW 150.0 kW 300.0 kW 45.00 kW 112.5 kW 225.0 kW 450.0 kW

300.0 V 9.000 kW 22.50 kW 45.0 kW 90.00 kW 30.00 kW 60.00 kW 150.0 kW 300.0 kW 600.0 kW 90.00 kW 225.0 kW 450.0 kW 900.0 kW

600.0 V 18.00 kW 45.00 kW 90.00 kW 180.0 kW 60.00 kW 120.0 kW 300.0 kW 600.0 kW 1.200 MW 180.0 kW 450.0 kW 900.0 kW 1.800 MW

1.000kV 30.00 kW 75.00 kW 150.0 kW 300.0 kW 100.0 kW 200.0 kW 500.0 kW 1.000 MW 2.000 MW 300.0 kW 750.0 kW 1.500 MW 3.000 MW

Current range

96032(1000A)

96031(500A)

96030(200A)

Current range

96034_3(3000A)

96034_2(2000A)

96034_1(1000A)

96035_1(3000A)

Three-phase

4-wire

*1

*2

*4

*4

*4

 Specifications of Each Function

 Frequency Measurement Function

Measurement input Voltage input Selectable from U1, U2 and U3
Measurement frequency range 45 to 65 Hz
Display range 40.00 to 70.00 Hz
Accuracy ±0.1%rdg. ±1dgt

Low-pass filter function Cutoff frequency: Approx. 300 Hz OFF/ON selectable

 Power Quantity Measurement Function

Measurement elements Active power quantity, regenerative power quantity, reactive

Measurement accuracy Measurement accuracy of active power and reactive power

Measurement range Active power quantity

Display digits setting function Selectable from automatic setting by rated power, minimum

Integration time accuracy ±20 ppm (Typ., 23°C)

 Demand Measurement Function

Measurement elements Active power (consumption), reactive power (lagging), power

Measurement accuracy Measurement accuracy of active power and reactive power

 Harmonic Measurement Function

Method PLL synchronization
Measurement frequency range Fundamental wave frequency 45 to 65 Hz
Harmonics for analysis 1st to 50th
Window width 1 cycle
Window type Rectangular
Analysis data quantity 128 points
Analysis rate 1 sample/16 cycles
Analysis items Harmonic level: Level of each harmonic of voltage, current and

Accuracy Harmonic level

Display data List, bar graph (linear/log), vector

 Waveform Measurement Function

Measurement elements Selectable from voltage/current waveform of same phase, all

Magnification change x1/3 to x 20 in relation to the rating
Display data 1 waveform

 Voltage Fluctuation Measurement Function

Measurement elements Voltage dip, voltage swell, instantaneous power failure
Measurement method Detected based on voltage rms of one waveform.
Threshold/hysteresis Can be set in percentage in relation to the reference voltage.
Accuracy Same as voltage rms accuracy
Detection period Time length during which the threshold is exceeded
Display data Occurrence date (year, month, day), voltage rms, detection

Number of events 100

 Display Function

Display 5.7-inch STN monochrome LCD display (320 dots x 240 dots)

Backlight OFF/ON and auto OFF selectable
Contrast Automatically adjusted according to the ambient temperature /

Display digits Items other than power quantity: 4 digits

Language English, Japanese, German, French, Spanish, Italian, Korean and

Display average function Moving average

Display hold Hold / cancel

 Save/Print Function

Data can be saved/printed manually or automatically.
Storage media Internal memory: 1MB or PC card
Printing Dedicated printer (via RS-232)
Save/print data Measured data, voltage variation data, waveform data, screen

Saving format Measured data: CSV format

Save/print interval
Standard interval: 1/2/5/10/15/30 seconds, 1/2/5/10/15/30/60 minutes

For 10% to 130% sine wave input of voltage range

power quantity (lead/lag)

±1dgt (When STANDARD is selected for display digits)

Consumption 0.00000 mWh to 999999 GWh
Regeneration -0.00000 mWh to -999999 GWh

Reactive power quantity

Lagging 0.00000 mvarh to 999999 GVarh
Leading -0.00000 mvarh to -999999 GVarh

resolution setting, and minimum resolution shift by integrated
value.

factor: Demand value within the interval time
Active power quantity (consumption, regeneration), reactive
power quantity (lagging), leading: Power quantity within the
interval time
Maximum demand (consumption power demand) required since
the start of integrating measurement and the time it occurs

±1dgt
(When STANDARD is selected as the standard number of
display digits)

Relative harmonic content: Content of each harmonic of

Harmonic phase angle: Phase angle of each harmonic of voltage,

Total value: Total value of all the harmonics up to the 50th

Total harmonic distortion rate:

1st to 20th: ±1.5%rdg. ±1.5%rng
21st to 30th: ±2.0%rdg. ±1.5%rng
31st to 50th: ±3.0%rdg. ±1.5%rng
Relative harmonic content:

Value calculated from harmonic level ±2dgt

Harmonic phase angle

The accuracy is guaranteed if both voltage and current levels
for each harmonic are 5% of the range or higher.
1st to 20th: ±5°
20th to 50th: ±(0.3° X k+1°) k: Order
The accuracy for current in relation to the fundamental wave
is not specified.

voltage waveforms, and all current waveforms.

period

with backlight

Settable in 8 steps.

Power quantity: 6 digits

Chinese

(Averaging count: selectable from 2, 5, 10 and 20)

data, setting data

(Binary format if short-time interval is set)
Voltage variation data: Text format
Waveform data: Binary format
Screen data: BMP format (bitmap)
Setting data: Text format

It is not possible to output/print measured harmonic and
waveform data if the interval is shorter than 30 seconds.

power

voltage, current and power

current and power
For voltage and current, the phase angle
of the fundamental wave or that of U1
can be selected as the reference.

harmonic of voltage, current, power and power factor

Voltage / current (THD-F or THD-R)

Short-time interval: 0.1/0.2/0.5 seconds for each waveform

 Data storage time display

Unoccupied capacity in the storage destination
Data save items, calculated based on the interval time.

 File operation

Rename File names in the internal memory and PC card can be changed.
Deletion File names in the internal memory and PC card can be deleted.
Format PC card and internal memory and can be initialized
Data copy Files in the internal memory can be copied to the PC card.
Setting file Setting file can be read, written, deleted and renamed.

 Communication Function

Electrical specifications EIA RS-232
Synchronization system Asynchronous communication
Baud rates 1200/2400/9600/19200/38400 bps
Connector D-sub 9-pin

 PC card interface

Slot PC card slot TYPE II (x1)
Compatible card ATA flash memory card
Data format MS-DOS format
Recording contents Measured data, voltage fluctuation data, waveform data, screen

 External control I/O terminals

Used to control start/end of integrating measurement.
Control input TTL level or contact
Control output TTL level

 Analog Input and DA Output Functions (Optional)

DA output
Output voltage ±1VDC of the rated value for each range

Number of output channels 4 channels
Output data
(Four items can be selected) Instantaneous value

Power quantity Active power quantity (consumption, regeneration), reactive

Harmonic Level, content, phase angle, total value, THD (THD-F or THD-R)
Accuracy ±(Measurement accuracy + 0.2%f.s.)
Resolution Polarity + 11 bits
Updating interval Other than harmonic measurement: 1 cycle of input signal

Temperature coefficient ±0.02%f.s./°C or less
Output resistance 22Ω±5%
Power quantity output route Selectable from 1V/1kWh, 1V/5kWh, 1V/10kWh, 1V/50kWh, 1V/

Analog input
Input ranges 100mV/1V/5VDC
Number of inputs 2 channels
Accuracy ±0.5% f.s
Resolution Polarity + 11 bits
Sampling rate Approx. 20ms
Input resistance Approx. 100kΩ

 Clock Function

Automatic calendar, automatic leap-year setting, 24-hour system
Real-time accuracy ± 20 ppm (Typ., 23°C)

 Wiring Check Function

Verification of validity of measurement of voltage/current input value, voltage/current phase
difference, voltage-to-voltage phase difference, current-to-current phase difference and frequency
Verification of single-phase load (in the case of Scott connection)
Wiring diagram, vector diagram display

 Setting Check Window

Used to check data save items and start/end for integrating measurement.

 Other functions

VT ratio/CT ratio setting, ID number setting, NiMH (nickel hydride battery) charge, remaining
battery voltage display, beep sound (key operation), key lock, system reset

 General specifications

Location for use: Indoor, at an altitude of 2000 meters or less
Storage temperature and humidity ranges
Operating temperature and humidity ranges
Insulating resistance 500 VDC, 50MΩ or greater

Insulating withstand voltage
(50/60Hz, for one minute) 5.55 kVAC rms for one minute (Sensed current: 1mA)

Power supply AC adapter (standard accessory), 100 to 240 VAC, 50/60Hz
Backup battery (for power failure) Six AA size alkaline batteries (standard accessory)

Maximum rated power consumption

External dimensions Approx. 206 (W) ҂ 184 (H) ҂ 65 (D) mm

Weight Approx. 1.2 kg (without batteries)

 Accuracy guarantee conditions

Warm-up time 30 minutes or more (within active input range, sine wave input,

Accuracy guarantee temperature and humidity ranges
Accuracy guarantee frequency range
Accuracy warranty period 1 year

Only instantaneous values can be input.

data, setting data

Power quantity depends on the output rate.
X1, X10 and X100 can be set for harmonics.
Frequency: 0.4 to 0.7V / 40 to 70 Hz

Voltage, current, average voltage, average current, active power,
reactive power, apparent power, power factor, phase angle,
frequency

power quantity (lagging/leading)

Harmonic measurement: 16 cycles of input signal

100kWh, 1V/500kWh and 1V/1000kWh.

-20 to 60°C, 90%RH (no condensation)
5 to 40°C, 5 to 80%RH (no condensation)

Between voltage input terminals and case
Between voltage input terminals and current input terminals /
DC power terminals / external interface terminals

Between voltage input terminals and case

3.32 kVAC rms for one minute (Sensed current: 1mA)
Between voltage input terminals and current input terminals /
DC power terminals / external interface terminals

One NiMH battery pack (optional)
Main unit: Approx. 10W (normal operation), approx. 20W
(during charging of NiMH battery pack)
AC adaptor: Approx. 30VA (normal operation), approx. 60VA
(during charging of NiMH battery pack)

(excluding projecting parts)

power factor=1, PLL synchronization)
23±5°C, 30 to 75%RH
45 to 65Hz

CW240

CW120 AP240E

11

Model CW120 Clamp-on Power Meter

(integration start/stop signal: function to
start/stop multiple units simultaneously)

Model CW121- -1

CW120

Maintenance and long term monitoring
of electrical equipment and electrical
system.

Current input

Voltage input

(clamp)

12

Model CW121- -1

External I/O controller port

(integration start/stop signal: function to

(integration start/stop signal: function to
start/stop multiple units simultaneously)

start/stop multiple units simultaneously)

RS-232 connector

100-240VAC Power connection

PC card slot

Power switch

(8-pin)

(flash ATA memory)

Easy-to-recognize function icons

wer measurement

Low-cost tools to support your energy conservation efforts

As energy conservation becomes increasingly important, we are pleased to present low-cost clamp-on power meters designed to meet user
needs for simple tools capable of measuring power values and instantaneous values.

Useful features for energy conservation and power measurement

Useful features for energy conservation and power measurement

CW240

●Periodically save data as often as once a
second

Data can be saved as low as 1-second interval.
This capability allows the CW120 Series to respond
quickly to load fluctuations and measure transient
responses in equipment.

●Check equipment operating conditions

The CW120 Series has an instantaneous value filing
function (enabling multiple data records to be saved in
a single file when multiple measurements are taken)
which is useful for determining equipment operating
conditions.

Details for Models CW120/CW121

Items

Measurement Mode

Display

Communication

Power supply

Size (W⫻H⫻D)

Weight

Input system

Instant mode

Electric Energy mode

Screen

Interface

Protocol

Monitoring by AP240E

CW120/CW121

Single-phase 2-wire to 3-phase 4-wire

(Up to 3 phase 3 wire for CW120)

Available

Segmented LCD with backlight

RS232 or RS485

MODBUS, PC-link, Power-Monitor, Proprietary

Available

100 to 240V AC, Supply the power from input.

117⫻161⫻51mm

600g

●Wiring error check function

This function helps ensure that measurement
operations are correct.

●Simultaneous measurement of multiple
facilities

Multiple CW120 Series units can start and stop
integration simultaneously through externally
controlled I/O.

●Works even with small electric energy
values

Easily change the decimal position (the number of
digits following the decimal point) and display unit (Wh,
kWh, MWh, GWh) on the electric energy display.

CW120 AP240E

13

Load measurements on multiple systems

● In addition to support for a variety of connection types,
The CW120 Series can simultaneously measure the
loads* (facilities, equipment) on multiple systems
sharing a common power supply.
CW120 (three-phase 3-wire model): 1ø2W⫻2
CW121 (three-phase 4-wire model): 1ø2W⫻2, ⫻3

1ø2W Three current systems (example)

Power supply side

1

2

(Facility 3)

Load 3 side

Load 2 side

(Facility 2)

Load 1 side

(Facility 1)

Low-cost tools to support your energy conservation efforts

Compact design

14

● The CW120 Series is compact in size (117҂161҂51mm

(W҂H҂D)), making it ideal for installation in cubicles
and inside distribution panels. Installation is even easier

Approximately
70 mm

Current clamp (96033)

with the magnetic case (93023).

● Although the CW120 Series is small, it has a large

ø18 mm

backlit LCD.

● A new addition to the clamp lineup is a small-diameter

current clamp (model 96033, capable of measurements
in the range of 5–50 A) for measurements in tight spots
and locations where many wires are jumbled together.

Magnetic case (93023)

Measurements

● The CW120 Series can be used for voltage measurements up to 495 V.

● A variety of connection types are supported, from single-phase 2-wire to three-phase 4-wire

(CW120: three-phase 3-wire model; CW121: three-phase 4-wire model).

● Continuous measurement integration (accurate measurements can be obtained even if there are large load

fluctuations)

● Plus/minus signs are shown for reactive power and power factor.

● The data saving interval can be set in the range of one second to one hour.

Parameters setting tool (name: Toolbox)

The setting software allows you to set CW120 Series
measurement conditions through a PC and save
measurement data on a PC when the unit is connected to
the PC through RS-232 or RS-485 port.

●Measurement conditions setting function

This function makes it easy to set basic functions needed
for measurement, such as start/stop time and date, wiring
method, clamp type, voltage, and current range etc.

●File transfer function

The data file stored in CF pack can be transfered to PC.
Microsoft Excel can read transferred data file.

* Toolbox is included as a standard feature (on two floppy disks).

RS-232 comm. cable

Microsoft, Windows, and Excel are trademarks or registered
trademarks of Microsoft Corporation, the United States.

Setting screen

File transfer screen

Advanced data management and communication

Data management and communication

CW240

1 You can connect CW120 to a PC through dedicated

RS-232 cable.

2 A printer (sold separately) can be connected through

RS-232 cable to print measurement data.

3 If you have a media reader connected to your PC or card

slot in notebook PC, measurement data and settings can
be uploaded directly to a PC from CF* pack.

Memory Card

97034

97035

97037

* Compact Flash cards with memory capacity up to 2 GB may be used.

Memory capacity

256MB

512MB

2GB

Interval Time 10sec

Approx. 103days

Approx. 206days

Approx. 2years

Interval Time 1sec

Approx. 70hours

Approx. 140hours

Approx. 560hours

Wiring Method

3system 1ø2W

3system 1ø2W

3system 1ø2W

Network Communication

CW120 In addition to proprietary communication also
supports, MODBUS, PC-link and Power Monitor protocols.
PC-link is a protocol for Yokogawa's Temperature
controllers and PLCs.
Power Monitor protocol is a protocol for Yokogawa's
Power Monitors. (PR201)

Model MV Model MV

Yokogawa's
Recorder

CF pack

3

Comm.
Cable
Model 91011

1

PC

2

Printer
Cable
Model 91010

Data Management by DAQLOGGER*

Internet

WEB function: Model MV100/200 can be
monitored by Internet Browser on PC.

E-mail Alarm function: The alarms from
Model MV100/200 can be sent to PC as an E­mail.

FTP function: Model MV100/200 can send
gathering data as a file to PC by using FTP
function.

Printer Model 97010

PC

RS485-MODBUS protocol

CW120 AP240E

Media reader

15

* DAQLOGGER is Yokogawa’s communication software for Windows

Remote monitoring

The RS-485 allows multiple use to be connected for
remote monitoring.

* RS-485/RS-232 converter is required to connect the CW120/CW121-m-2 (RS-

485 communication spec) to the RS-232 port on your PC.

Recommended brand and model: Yokogawa’s RS-232/RS-485 Converter
Model ML2.

PC

RS-232

RS-485

Monitoring

Software

Converter

Max 31 units, 1.2km

Vrms=

T

1

T

0

=

T

1

T

t=0

Arms=

T

1

T

0

=

T

1

T

t=0

T

1

T

0

=

T

1

T

t=0

•Voltage rms

•Current rms

•Active power

•Reactive power and power factor

Single-phase

2-wire

Single-phase

3-wire

Three-phase

3-wire

(Note 3)

Three-phase

4-wire

Reactive power

(Note 2) Apparent power Power factor (Note 2)

Computation

range

Display

resolution

Rated value depends on V
and A ranges.

Rated value depends on V
and A ranges.
Internal computation only;
data not displayed or saved.

Same as for active power.

dt

dt

dt

Single-phase 3-wire, three-phase 3-wire
Three-phase 4-wire

(t), i(t): Input signals
T: One period for input signal

P= i

P = P1 + P2
P = P1 + P2 + P3

Note 1: In the case of distorted waves, there may be differences from other measuring instruments that are based

on different measurement principles.

Note 2: The polarity of each phase determined by the reactive power meter method is multiplied and the polarity

is displayed.

Note 3: In the case of three-phase 3-wire and unbalanced inputs, there may be differences from other measuring

instruments that are based on different measurement principles, or wiring.

 Equations

Specifications

16

 Inputs

Input type

Rated value

(range)

Wiring

Input

resistance

Maximum allowed

input

A/D converter

CW120

CW121

CW120

CW121

Resistive potential division

150/300/450 V

Single-phase 2-wire, single-phase 3-wire, three-phase 3-wire

Single-phase 2-wire, single-phase 3-wire, three-phase 3-wire, three-phase 4-wire
Approximately 1.5 MΩ
Approximately 1.3 MΩ

495 Vrms

Voltage/current input simultaneous conversion, 12-bit resolution

Voltage (V)Parameter

Current (A)

Clamp detection

Clamp 96033: 5/10/20/50 A

Clamp 96030: 20/50/100/200 A

Clamp 96031: 50/100/200/500 A

Clamp 96032: 200/500/1000 A

Approximately 100 kΩ

Clamp 96033: 130 Arms

Clamp 96030: 250 Arms

Clamp 96031: 625 Arms

Clamp 96032: 1000 Arms

 Measurement Input functions

Parameter
Method

Frequency range

Crest factor

Active input range

Display

range

Temperature coefficient

Display updating interval

 Instantaneous Value Measurement

•Measurement parameters: Voltage rms (V), current rms (A), active power (W), frequency

•Measurement accuracy (at power factor 1, including clamp)

Voltage: ±(0.3% rdg + 0.2% rng)
Current/active power: ±(0.8% rdg + 0.4% rng) when using clamps 96030, 96031, and

Frequency: ±(0.1% rdg + 1% dgt)

•Computation parameters: Reactive power (Var), power factor

•Computation accuracy: (value calculated from measurement) ±1 dgt

•Power factor influence: ±1.0% rng cosø = ±0.5 (relative to power factor 1) when using

Digital sampling

45–65 Hz (reciprocal system), detected from V1

150/300 V range

450 V range

10–110% of each range

All ranges 1.5 V

Lower limit

130% of each range, except 110% for 450 V range

Upper limit

±0.05% rng/˚C

Approximately one second

•Reactive factor influence: ±1.0% rng sinø = ±0.5 (relative to reactive factor 1) when using

Voltage Current/active power

Rated input: 2

Rated input: 1.56

Rated input: 3

0.4% of each range

130% of each range
±0.07% rng/˚C (including clamp)

(Hz)

96033
±(1.2% rdg + 0.8% rng) when using clamp 96032

clamp 96030
±2.0% rng cosø = ±0.5 (relative to power factor 1) when using
clamps 96031, 96032, and 96033

clamp 96030
±2.0% rng sinø = ±0.5 (relative to reactive factor 1) when using
clamps 96031, 96032, and 9603

 Electric Energy Measurement

•Measured parameters:
Active electric energy, regenerative electric energy (regenerative electric energy is not displayed
on the screen; it is merely saved)

•Measurement accuracy: Active power measurement accuracy ±1 dgt (with standard settings)

•Integration function settings
Start/stop settings: Manual, timer, external trigger (control)
Output intervals: 1/2/5/10/15/30 seconds; 1/2/5/10/15/30 minutes; 1 hour

•Displayed digits:
This is set automatically based on the rated power, and the minimum resolution can be set

 Saving items

•Saving items:
Voltage, current, active power, reactive power, power factor, frequency, active electric energy,
regenerative electric energy

 Display Functions

•Display screen: Backlit segmented LCD

•Maximum number of displayed digits
Electric energy: 6 digits
Other parameters: 4 digits

•Range makeup: (rated values)

Voltage

150.0V

300.0V

450.0V

Wiring

1ø2W

1ø3W

3ø3W

3ø4W

1ø2W

1ø3W

3ø3W

3ø4W

1ø2W

1ø3W

3ø3W

3ø4W

5.000 A

750.0 W

1.500 kW

1.500 kW

2.250 kW

1.500 kW

3.000 kW

3.000 kW

4.500 kW

2.250 kW

4.500 kW

4.500 kW

6.750 kW

10.00 A

1.500 kW

3.000 kW

3.000 kW

4.500 kW

3.000 kW

6.000 kW

6.000 kW

9.000 kW

4.500 kW

9.000 kW

9.000 kW

13.50 kW

Clamp 96033

20.00 A

3.000 kW

6.000 kW

6.000 kW

9.000 kW

6.000 kW

12.00 kW

12.00 kW

18.00 kW

9.000 kW

18.00 kW

18.00 kW

27.00 kW

50.00 A

7.500 kW

15.00 kW

15.00 kW

22.50 kW

15.00 kW

30.00 kW

30.00 kW

45.00 kW

22.50 kW

45.00 kW

45.00 kW

67.50 kW

Clamp 96030

100.0 A

15.00 kW

30.00 kW

30.00 kW

45.00 kW

30.00 kW

60.00 kW

60.00 kW

90.00 kW

45.00 kW

90.00 kW

90.00 kW

135.0 kW

Clamp 96031

200.0 A

30.00 kW

60.00 kW

60.00 kW

90.00 kW

60.00 kW

120.0 kW

120.0 kW

180.0 kW

90.00 kW

180.0 kW

180.0 kW

270.0 kW

Clamp 96032

500.0 A

75.00 kW

150.0 kW

150.0 kW

225.0 kW

150.0 kW

300.0 kW

300.0 kW

450.0 kW

225.0 kW

450.0 kW

450.0 kW

675.0 kW

1.000 kA

150.0 kW

300.0 kW

300.0 kW

450.0 kW

300.0 kW

600.0 kW

600.0 kW

900.0 kW

450.0 kW

900.0 kW

900.0 kW

1.350 MW

 Communication Functions

•Electrical specifications: Conforms to EIA RS-232 or EIA RS-485.

•Protocols: CW120/121 proprietary protocol, Power Monitor protocol

•Synchronization system: Start stop synchronization

•Baud rates: 1200, 2400, 4800, 9600, 19200, 38400 bps

 PC card interface

•Slot: PC card slot TYPE II

•Compatible card: ATA flash memory card

•Function specifications: Saving measurement data, saving and reading settings data

 Faulty Wiring Checking Functions

•Check details:
Presence/absence of power input; check for frequency measurement range; voltage phase
sequence;
presence/absence of power input; whether current clamp is reverse-connected

 Scaling Function

The VT ratio and CT ratio can be set.

•Settings ranges VT ratio: 1–10,000

 External Control I/O (for RS-232 only; not provided for RS-485)

These input and output can be used as signals for starting and stopping integrating measurement.

•Control input: TTL level or contact

•Control output: TTL level

 Other Functions

Clock (typical precision: ±100 ppm), key lock, system reset

 General Specifications

•Environmental requirements: Indoor usage at an altitude of 2000 meters or less.

•Usage temperature and humidity ranges:

•Storage temperature and humidity ranges:

•Insulating resistance:
500 V DC, 50 MW or greater

Between voltage input terminals and case
Between voltage input terminals and current input terminals, communication terminals, and control

I/O terminals

Between power line and case
Between power line and current input terminals, communication terminals, and control I/O

terminals

•Insulating withstand voltage:
5550 V AC for one minute

Between voltage input terminals and case

3320 V AC for one minute

Between voltage input terminals and current input terminals, communication terminals, and
control I/O terminals

2300 V AC for one minute

Between power line and case
Between power line and current input terminals, communication terminals, and control I/O
terminals

•Power supply: 100–240 V AC ±10%, 50/60 Hz

•Consumed power: 8 VA maximum

•External magnetic field effects: Within accuracy levels at 400 A/m

•External dimensions: Approximately 117 ҂ 161 ҂ 51 mm (W ҂ H ҂ D)

•Weight: Approximately 0.6 kg

•Terminals:

Voltage input CW120: 3 terminals Banana terminals (safety terminals)

Current terminals CW120: 2 pairs Banana terminals (safety terminals)
(H/L) CW121: 3 pairs Banana terminals (safety terminals)
External control I/O 3 terminals (H/L/H) Screwless terminals
terminals RS-485 4 terminals (+/-/SG/TM) M3 screw terminals

•Connectors:
RS-232: Mini DIN 8-pin
AC power supply: 2-pin

•Accessories:
Voltage input probes: 3 for CW120, 4 for CW121
Power cord, user's manual, operation guide, Toolbox (setting software)

•Safety standards:
Compliant with EN61010-1, EN61010-2-031, UL3111-1 First Edition, CAN C22.2 No. 1010.1-92
–Voltage input line

Measurement (Overvoltage) category III (Max. input voltage : 600 Vrms)

– Power line

Installation category II (Max. input voltage : 264 Vrms)

Pollution degree 2

•EMC (emission):
Compliant with EN55011, Group1, ClassA; EN61326; EN61000-3-2; EN61000-3-3

•EMC (immunity):
Compliant with EN61326

(Standard protocol used for YOKOGAWA M&C's Power
Monitor)
PC link communication (Standard protocol used for
YOKOGAWA M&C’s Temperature Controllers)
MODBUS communication (ASCII or RTU)

CT ratio: 1–10,000 (in increments of 0.01)

0–50°C, 5–85% RH (no condensation)
0–40°C, 5–85% RH (no condensation) for UL, C-UL

-20–60°C, 90% RH (no condensation)

CW121: 4 terminals Banana terminals (safety terminals)

CW240

CW120 AP240E

17

CW240 Model and Suffix Code

93020

CW240 main unit can be packed in the
carrying case with accessories like
current clamps and voltage probes,
without disconnecting them from the
main unit. It also holds the other
accessories.

To prevent error connection of clamp
probes.

Carrying case Protective Cover

91022

●Model name and suffix code

Model (Part No.)

CW240

Suffix code Option code

-D

-F

-H

-R

-S

Power Cord (UL/CSA Standard)

Power Cord (VDE Standard)

Power Cord (GB Standard)

Power Cord (SAA Standard)

Power Cord (BS Standard)

Description

●CW240 selection list for clamps

Notes for selecting type of clamp probesNumber of clampsAim wiring to measure

1phase2wire1load

1phase2wire2load

1phase2wire3load

1phase2wire4load

1phase3wire1load

1phase3wire2load

3phase3wire1load

3phase3wire2load

3phase3wire1load3currents

3phase4wire

Scott wiring

Standard accessories comes with main unit

91007 Voltage probes, AC adapter x1, AA size alkaline battery x6, ToolBox240(CD-ROM) x1,
User's Manual x1/CD-ROM version x1, Quick Manual x 1/CD-ROM version x1,
Communication function manual(CD-ROM) x1

1

2

3

4

2

4

2

4

3

3

4

Different clamps are selectable.

Same clamps must be selected.

Same clamps must be selected for each load.

Same clamps must be selected.

Same clamps must be selected for each load.

Same clamps must be selected.

Same clamps must be selected.

Same clamps must be selected.

●Accessories

Voltage probes (4 pcs/set)
NiMH battery pack
Memory Card (256MB)
Memory Card (512MB)
Memory Card (2GB)
Printer
AC adapter (for printer, Europe)
AC adapter (for printer, USA)
Thermal paper for printer (10 rolls)
AC adapter for 96035

CW viewer

91007
94004
97034
97035
97037
97010
94006
94007
97080
94013

B9108WB

AP240E

DescriptionModel No.Name

256MB CF with PC Card Adapter
512MB CF with PC Card Adapter
2GB CF with PC Card Adapter

Power Supply 200-240 VAC
Power Supply 100-120 VAC

For AC 120V
For AC 220-240V

18

CW120 Models and Suffix code

●Model name and suffix code

Model (Part No.)

CW120

CW121

Power cord

Communication

Suffix code Option code

-D

-F

-H

-R

-S

-1

-2

Three-phase 3-wire

Three-phase 4-wire

AC power cord (UL/CSA Standard)

AC power cord (VDE Standard)

AC power cord (GB Standard)

AC power cord (SAA Standard)

AC power cord (BS Standard)

RS-232 communication interface

RS-485 communication interface

●CW120/CW121 selection list for clamps

1phase2wire1load

1phase2wire2load

1phase2wire3load

1phase3wire1load

3phase3wire1load

3phase4wire

1

2

3

2

2

3

●Accessories supplied at no extra cost

Product Name Part No.

1. Power cord

2. Voltage probes (for CW 120)

Voltage probes (for CW 121)

3. User's Manual

4. Operation Guide

91018

91007

IM CW120-E

IM CW-120P-E

Description

Notes for selecting type of clamp probesNumber of clampsAim wiring to measure

Same clamps must be selected.

Same clamps must be selected.

Same clamps must be selected for CW121.

Same clamps must be selected.

Same clamps must be selected.

Same clamps must be selected for CW121.

Qty

1

3

4

1

1

●Accessories

Carrying case

CW120 main unit can be
packed in the carrying
case with accessories
like the current clamps
and voltage probes.
It also holds the other
accessories.

Power cable Printer

This cable supplies power from a
measurement circuit. length 1.5m
*Not applied to CE and UL.

Voltage probe
Voltage probe
Communication cable
Printer cable

Memory Card (256MB)
Memory Card (512MB)
Memory Card (2GB)
Printer

AC adapter (for printer, Europe)
AC adapter (for printer, USA)
Printer thermal paper
AC adapter for 96035

CW viewer

Includes magnet
and stand

91007
91018
91011
91010

97034
97035
97037
97010
94006
94007
97080
94013

B9108WB

AP240E

Main unit case

Portable case

9302393022 93024

98030 97010

DescriptionModel No.Name

Four per set
Three per set
RS232 communication cable for PC (9-pin)
RS232 printer cable, length 1.5 m

256MB CF with PC Card Adapter
512MB CF with PC Card Adapter
2GB CF with PC Card Adapter
Includes one roll of thermal paper and one battery pack
Power Supply 200-240 VAC
Power Supply 100-120 VAC
10 rolls
For AC 120V
For AC 220-240V

Effective power supply quality and power saving management for PCs

CWViewer

Data Analysis Program for CW240/CW12x

AP240E report creation in line with your objectives.

Powerful & Accurate measurement

with the CW240

AP240E

CW240

CW120 AP240E

Increased quality and effectiveness of report creation

CW Viewer AP240E is data analyzing software for the CW240 Clamp­on Power Meter. Making full use of the rich measuring functions of the
CW240, this efficiently manages the large amounts of measurement
data that are required in order to implement power quality
management, energy management, and power saving measures.
Furthermore, the quality and efficiency of report creation has been
improved in order that reports to meet certain purposes can be easily
created.

Report creation in line with objectives

●Graph Display

●Daily Report Display, Weekly /
Monthly Report Display

●Harmonic Graph Display

Graph

●Harmonics Instant Value Display

●Waveform Data Display

●Voltage Change Display

19

Daily Report

20

Report

Creation

Power quality and power saving management data measured with the CW240

AP240E report creation in line with your objectives

Increased quality and effectiveness of report creation

Bulk Data Management

In order to edit measurement data to create reports that meet objectives, it is necessary to sort the required elements
from a broad range of measurement data, and to set both the parameters for display, and items to display. CW Viewer
AP240E carries out bulk management of data by registering measurement data and display parameters. Easy data
registration, deletion, reference, and analysis means that the program is easy to use immediately, even for beginners.

●Bulk Management of Large Quantities of
Measurement Data

Using the AP240E, it is easy to register a large amount of data
measured with CW240 in the database, for integrated handling.
1 At the time of data registration, only the target files are displayed,

and detailed information can be confirmed by selecting these files.

2 Measurement data can be searched by measurement date or

group name.

3 Automatically links to measurement data such as that for

waveforms and voltage changes.

4 Group names and comments can be added and registered.

●Fast Reproduction of Past Reports

CW Viewer AP240E links display parameters for graphs and records with measurement data, and saves this in the
database, which means that reports that have been created in the past can be swiftly recreated in the same format.

Effective power supply quality and power saving management for PCs.

Registered
Data Details

1

2
3

dialog

4

Main screen

Simple Report Creation

Select measurement data, and click the Data Display button to edit reports. Settings of display items is easy, and items
such as graphs and daily reports are easy to create.

Simple Operation Clear Display

●Pick out target elements from large amounts of
data.

Items that can be selected when setting display items are displayed
in a list, which means that measurement data items that are required
for carrying out power management and power quality management

1

2

3

can be efficiently selected to meet objectives.
1Up to a maximum of 8 items can be set for both the left and right

axes.

4

Item Selection dialog

2 Display items, units, and scale, etc. can be selected from the list.
3 Desired maximum and minimum values for the graph scale can be set. Additionally, the Automatic Settings button

can be used to set optimal values.

4 This is also convenient for comparisons with power reduction targets, by setting standard values.

●Easy Setting of Focus Times

Setting the start and period of the focus times enables setting of a range of part (or all) of the measurement data.

1The display start time can be specified from the range of existing measurement data.
2 The specified display range can be moved easily using these

buttons.

3 The graph display period (the whole period or a desired period)

can be specified.

4 A desired range (more than the measurement cycle) can be

specified.

1

2

3
4

Focus Period settings

Data Analysis Program

CWViewer

A

P

240EA

P

240E

Variety of Presentations in Line with Objectives

Report formats that can be selected as a result of the types of measurement data are displayed on tabs. Report formats
in line with objectives can be easily selected with tabs from a variety of report presentations.

●Selection of Report Formats with Tabs

Report formats such as graph display, daily report display,
harmonics graph and voltage change can be easily switched by
selection with tabs.
Superimposed Display of Multiple Waveforms
A channel, system, and type can be selected for each
measurement item such as power, voltage, and current, and up to
8 items can be simultaneously displayed on the graph for each of
the left and right vertical axes (a total of 16 items). This enables
the comparative display per channel and system of multiple data
items.

●Easy-to-see Graph Display

Graph display can be changed (line type, line thickness, and line
color, markers, etc.) in line with objectives, and multiple
measurement data can be displayed on the report in an easy to see
manner.

●Harmonics Data Analysis

Harmonics graphs are displayed by selecting the desired degree
from amongst 50. Harmonics trend graphs and harmonics instant
value graphs can be selected with tabs, and in the harmonics
instant value tab, all harmonics levels, harmonics content ratios,
and phase differences can be displayed. Vector display of power
phase differences is also possible.

●Waveform Data Display

Displays as a graph waveform data (maximum of 7 for each of
four systems) measured with the CW240. Irregularities in voltage
and current waveforms for each phase can be viewed at a glance,
making for effective management of electrical power quality
(current situation and confirmation of measures taken).

Graph Display

Harmonics Trend Display Harmonics Instant

Power Phase Difference

Vector Diagram Display

Val ue Display

Waveform Display

Tab Selection

CW240

CW120 AP240E

21

One-Touch Selection of Daily and Weekly Reports

●Daily Report Display

Demand measurement values for power consumption are
displayed in time units (30 minutes or 1 hour) as daily reports,
simply by selecting the desired demand measurement items.
Furthermore, load and demand ratio calculations are carried out
automatically by setting capacitance values for facilities.

●Weekly and Monthly Report Display

Demand measurement values for power consumption in 1 day
units are displayed as weekly and monthly reports. Load and
demand ratio calculations are carried out automatically in the
same way as with daily reports.

●Voltage Change Display

Displays in a list voltage drops, rises, and momentary power
interruption detection data and detection time. This enables
confirmation of the start, end, and period of voltage changes.

●Record Display

When the graph display, harmonics trend display, and harmonics
instant value display tabs have been selected, numerical data for
the displayed graph range can be displayed as a record.

Daily Report Display

Voltage Change Display

Records Display

Report

AP240E Analysis Data can be Further Edited in MS Excel and Word

Creation

Report Creation Customization Functions

●Graph and Record Printing

Print graphs and records by using the Print buttons on the graph
display screen and records screen. Additionally, when printing, the
preview screen will allow confirmation of output.

●Selectable Printer Type

Printer configuration is possible in order that either color or
monochrome are printed correctly.

Effective power supply quality and power saving management for PCs.

Print Preview

22

●Graph Copy

The portion of the graph on the displayed screen can be copied to the
clipboard by using the Graph Copy button on the graph screen. This
enables graph images that are created in CW Viewer AP240E to be
pasted into Excel or Word documents. Power phase difference vector
diagrams and waveform data are also handled in the same way.

●Record Copy

By using the Record Copy button in the same way as with graphs,
record data can be copied to the clipboard. Record data is copied as
text data.

●Saving Record Data as CSV Format Files

The range of data displayed on the daily report, monthly report, and
record screens can be saved as CSV format files. CSV files can be used
in spreadsheet software; this is convenient for secondary analysis of
measurement data, and creation of original reports.

Useful Functions

●Analog Input Data

Scaling for analog input data settings, and unit settings can be carried
out. This enables comparison of measurement data such as
temperature and lighting density with data such as used energy.

●Voltage Unbalance Ratio Display

Automatically measures voltage unbalance ratios when CH1 ~ CH3
voltage is measured, and can display as a graph in the same way as
with other measurement data items.

●Default Settings

Frequently used unit settings, graph display parameter settings, and
group name settings, etc. can be registered as defaults in advance.

●Display Settings / Measurement Parameter Display

Settings parameters and measurement intervals, etc. at the time of
measurement are displayed on the top of the tabs on the data display
screen, enabling constant confirmation by selecting tabs even if the
report format is changed.

Pasting Records

Example of Copying Graphs and Records

Scaling Settings

Default Settings

Measurement Parameter Display

Pasting Graphs

AP240E Specifications

Data Analysis Program

CWViewer

A

P

240EA

P

240E

CW240

Data Management

•Display of measurement parameters when
measurement data is registered.

•Registration in the database of measurement date,
measurement parameters, group names, and
comments added to measurement data possible.

•Bulk management of data such as harmonics data,
waveform data, and voltage change data.

•Editing of data names, comments, and group names
possible.

•Searching by measurement dates / periods, and group
names possible.

•Saving of settings information at the time the report
was displayed, and that corresponds to data.

•Setting of defaults for a range of settings data
possible.

Data Display Selection

•Always display measurement parameters on the data
display screen.

•Selection by the use of tabs to select report displays
(graph display, daily report display, weekly / monthly
report display, harmonic graph display, harmonics
instant value display, waveform data display, voltage
change display) possible.

Graph Display

•Graph display of up to 8 items on each of the left and
right axes possible.

•Selection of display items an ordered list possible.

•Settings of units, decimal points, minimum values, and
maximum values, as well as automatic adjustment for
each of the left and right axes possible.

•Graph customization (line type, line thickness marker,
color) possible.

•Setting of the graph display period (focused time,
period, measurement cycle) possible.

•Movement of the graph display period possible.

•Graph interpolation of non-measured segments
possible.

Daily Report Display, Weekly / Monthly Report Display

•Displays the daily report, and weekly / monthly report
tabs where there is demand measurement data.

•Displays selected demand measurement values per
time (or date).

•Selection of display intervals for daily report display
(1 hour / 30 minutes) possible.

•Can set the equipment capacity, and automatically
calculate load ratios and demand ratios.

Harmonic Graph Display

•Displays the harmonics graph tab where there is
harmonics measurement data.

•Selection of degree data up to a maximum of 50
degrees possible.

Harmonics Instant Value Display

•Displays the harmonics graph tab when there is
harmonics measurement data.

•Selection of degrees of up to 50 possible.

•Display of power phase difference vector diagrams
possible.

Waveform Data Display

•Displays the waveform data tab when there is
waveform data.

•Display of selected waveform data.

Voltage Change Display

•Displays the voltage change data tab when there is
voltage change detection data.

•Displays voltage change data per detection time.

•Selection of display items (voltage dip, voltage swell,
detected momentary power interruptions) possible.

Package contents

Contents

AP240E installation CD

User registration card

1
1

CW120 AP240E

23

Common Accessories for CW120/121 and CW240

Item
Measuring range
Output voltage
Accuracy

Output impedance

External magnetic
field effects

Conductor position
effects

Operating circuit voltage
External dimensions
Weight
Output cable length

Amplitude

Phase

96031 Clamp-on Current Probe

0–500 Arms AC (750 Apk)

0–0.5 Vrms AC (1 mV/A)

±1.5% rdg ±0.4 mV (20 Hz to 45 Hz)
±0.5% rdg ±0.1 mV (45 Hz to 66 Hz)
±0.8% rdg ±0.2 mV (66 Hz to 1 kHz)

±1.0˚ (45 Hz to 1 kHz)

Approx. 2.4 Ω

0.2 A equivalent or less (at 400 A/m, 50/60 Hz)

±0.5% (at 50–500 A, 45 Hz to 1 kHz)

96032 Clamp-on Current Probe

0–700 Arms AC (990 Apk)

1000 Arms (1414 Apk) for 5 minutes

0–0.25 Vrms AC (0.25 mV/A)

±1.0% rdg ±0.2 mV (45 Hz to 66 Hz)

±1.0˚ (50 A or more, 45 Hz to 66 Hz)

Approx. 100 Ω (max.)

0.5 A equivalent or less (at 400 A/m, 50/60 Hz)

±0.5% (at 200–1000 A, 45 Hz to 66 Hz)

Approx. 100 (W) × 172.5 (H) × 32 (D) mm

Approx. 500 g

96033 Clamp-on Current Probe

0–50 Arms AC

0–0.5 Vrms AC (10 mV/A)

±1.0% rdg ±0.3 mV (20 Hz to 45 Hz)
±0.5% rdg ±0.1 mV (45 Hz to 66 Hz)
±0.8% rdg ±0.2 mV (66 Hz to 1 kHz)
±1.0% rdg ±0.3 mV (1 kHz to 5 kHz)
±3% rdg ±0.4 mV (5 kHz to 20 kHz)

±1.0˚ (45 Hz to 1 kHz)

Approx. 18 Ω

0.1 A equivalent or less (at 400 A/m, 50/60 Hz)

±0.5% (at 1–50 A, 45 Hz to 1 kHz)

300 Vrms AC max.

Approx. 52 (W) × 106 (H) × 25 (D) mm (excluding protrusions)

Approx. 220 g

96036Clamp-on Current Probe

0–2Arms AC (20Apk)

0–0mVrms AC (25mV/A)

±1.5%rdg±0.04mV (20Hz–45Hz)
±0.5%rdg±0.01mV (45Hz–66Hz)
±0.8%rdg±0.02mV (66Hz–1kHz)

±2%rdg±0.04mV (1kHz–5kHz)

±2° (45Hz–3.5kHz)

Approx.70Ω

2mA equivalent or less

(at 400A/m, 50/60Hz)

±0.5% (at 0.2–2A, 45Hz–1kHz)

50Vrms AC max.

Approx.70(W)⫻120(H)⫻25(D)mm

Approx.300g

96030 Clamp-on Current Probe

0–200 Arms AC (300 Apk)
0–0.5 Vrms AC (2.5 mV/A)

±1.5% rdg ±0.4 mV (20 Hz to 45 Hz)
±0.5% rdg ±0.1 mV (45 Hz to 66 Hz)
±0.8% rdg ±0.2 mV (66 Hz to 1 kHz)

±2.0% rdg ±0.4 mV (1 kHz to 20 kHz)

±0.5˚ (45 Hz to 1 kHz)

(for temperature of 23˚C ±5˚C, relative humidity of 35–75%, and sine wave input)

Approx. 6 Ω

0.1 A equivalent or less (at 400 A/m, 50/60 Hz)

±0.5% (at 20–200 A, 45 Hz to 1 kHz)

600 Vrms AC max.

Approx. 73 (W) × 130 (H) × 30 (D) mm

Approx. 300 g

Approx. 3 meters

External Dimensions

Item
Range type
Measuring range
Output voltage

Accuracy
(for temperature
of 23˚C ±5˚C,
relative humidity
of 20–70%, and
sine wave input)

Maximum
allowable current
(600 Hz or less)

Output impedance

External magnetic
field effects

Conductor position
effects

Operating circuit
voltage

Measurable
conductor diameter

External dimensions

Weight

Output cable length
Output terminal

Power supply

Amplitude

Phase

±1% rdg +0.045 mV (1–20 A)

1200 Arms AC (continuous)

1000 A

0–1000 Arms AC

0–0.5 Vrms AC (0.5 mV/A)

±1% rdg (20–1200 A)

Not specified (1–20 A)

±1.0˚ (20–200 A)

±0.5˚ (200–1200 A)

ø64 × 100 mm, five 125 × 5 mm bus bars, or three 100 × 10 mm bus bars

96034 Clamp-on Current Probe

2000 A

0–2000 Arms AC

0–0.5 Vrms AC (0.25 mV/A)

±1% rdg +0.0225 mV (1–20 A)

±1% rdg (20–2400 A)

Not specified (1–20 A)

±1.0˚ (20–200 A)

±0.5˚ (200–2400 A)

2400 Arms AC (continuous)

2 Ω or less

1% +0.2 A or less

600 Vrms AC max.

Approx. 310 (W) × 120 (H) × 48 (D) mm

Approx. 1400 g

3000 A

0–3000 Arms AC

0–0.5 Vrms AC (0.1667 mV/A)

±1% rdg +0.015 mV (1–20 A)

±1% rdg (20–3600 A)

Not specified (1–20 A)

±1.0˚ (20–200 A)

±0.5˚ (200–3600 A)

2400–2800 Arms AC (for 15 minutes)
2800–3600 Arms AC (for 10 minutes)

±0.1% of full scale (at 400 A/m, 50/60 Hz)

Approx. 3 meters

Banana plug (safety terminal)

96035 Clamp-on Current Probe

3000 A

0–3000 Arms AC

0–0.5 Vrms AC (0.1667 mV/A)

±1% rdg (5–3000 A, 45 Hz to 66 Hz)

±3% rdg (100 A, 10 Hz to 10 kHz)

±1˚ (5–3000 A, 45 Hz to 66 Hz)

±4˚ (200 A, 40 Hz to 1 kHz)

3600 Arms AC (10 Hz to 1 kHz)

±2% of full scale

Main unit: 600 Vrms AC max.

Measuring unit: 1000 Vrms AC max.

ø170 mm max.

Main unit: Approx. 140 (W) × 64 (H) × 28 (D) mm

Measuring unit: Approx. 610 mm

Main unit: Approx. 300 g (including battery and output cable)

Measuring unit: Approx. 180 g

9 V alkaline battery (6LF22) AC Adapter

Continuous measurement: 150 hours

Intermittent measurement: 10,000 times

0–0.5 Vrms AC (1.667 mV/A)

±1% rdg (5–300 A, 45 Hz to 66 Hz)

±5% rdg (100 A, 10 Hz to 10 kHz)

±1˚ (5–300 A, 45 Hz to 66 Hz)

±7˚ (200 A, 40 Hz to 1 kHz)

Approx. 47 Ω

300 A

0–300 Arms AC

360 Arms AC

96030,31

96034

unit: mm unit: mm unit: mm

100

24.7

73

30

130

86

57
60

unit: mm unit: mm unit: mm

12048

310

66

71

30

Air-core
Length: approx. 610mm
Weight: approx. 180g

140

Box Weight: approx. 300g
(including a battery and output cable)

172.5

3000

64

28

9603396032

9603696035

World Wide Web site at

http://www.yokogawa.com/ymi

YOKOGAWA METERS & INSTRUMENTS CORPORATION
International Sales Dept.

YOKOGAWA CORPORATION OF AMERICA (U.S.A.) Phone: [phone] Facsimile: [phone]
YOKOGAWA EUROPE B. V. (THE NETHERLANDS) Phone: [phone] Facsimile: [phone]
YOKOGAWA ENGINEERING ASIA PTE. LTD. (SINGAPORE)
YOKOGAWA AMERICA DO SUL LTDA (BRAZIL) Phone: [phone] Facsimile: [phone]
YOKOGAWA MEASURING INSTRUMENTS KOREA CORPORATION (KOREA)
YOKOGAWA AUSTRALIA PTY. LTD. (AUSTRALIA) Phone: [phone] Facsimile: [phone]
YOKOGAWA INDIA LTD. (INDIA) Phone: [phone] Facsimile: [phone]
YOKOGAWA SHANGHAI TRADING CO., LTD. (CHINA) Phone: [phone] Facsimile: [phone]
YOKOGAWA MIDDLE EAST B. S. C.(C) (BAHRAIN) Phone: [phone] Facsimile: [phone]
YOKOGAWA ELECTRIC CIS LTD. (RUSSIAN FEDERATION)

Subject to change without notice.

All Rights Reserved. Copyright © 2002, Yokogawa Meters & Instruments Corporation.

Tachihi Bld. No.2, 6-1-3 Sakaecho, Tachikawa-shi, Tokyo, 190-8586 Japan
Phone: [phone] Facsimile: [phone]

Phone: [phone] Facsimile: [phone]

Phone: [phone] Facsimile: [phone]

Phone: [phone] Facsimile: [phone]

[Ed: 11/b] Printed in Japan: Mar. 2011(C)/5,000(KP)

106

69

255240

ø40

120

40

25

55.6

NOTICE

● Before using the product, read the instruction manual
carefully to ensure proper and safe operation.

Represented by:

MIK-ES17