Contents
Introduction ............................................................................................................... 1
Options ...................................................................................................................... 5
Safety Information .................................................................................................... 7
Precautions for Use.................................................................................................11
Part Names .............................................................................................................. 16
Operation Keys ....................................................................................................... 17
■Rotary switch ................................................................................................... 19
■Power-on option table (beeping, resetting the instrument to the factory
settings, etc.) ................................................................................................... 20
Installing and Replacing Batteries ....................................................................... 22
■Battery installation/replacement procedure ..................................................... 23
Z3210 Wireless Adapter (option) ........................................................................... 25
■Z3210 Wireless Adapter installation/replacement procedure .......................... 26
Test Leads ............................................................................................................... 27
Inspection Before Measurement ........................................................................... 30
CM3286C961-00
i
Contents
Switching Ranges ................................................................................................... 60
Max., Min., and Average Values (MAX/MIN/AVG) ................................................. 61
Backlight, Automatic Power Save (APS) .............................................................. 64
Measurement Using the Clamp Adapter .............................................................. 65
Wireless Communications Function .................................................................... 66
■GENNECT Cross (application software) ......................................................... 66
■Z3210-to-Excel
®
(Excel
direct input function, HID function) ...................................................... 71
®
direct data entry function
Specications ......................................................................................................... 75
■General specications ..................................................................................... 75
■Input, output, and measurement specications ............................................... 78
■Harmonic measurement specications (with Z3210 connected) ..................... 81
Accuracy Table ....................................................................................................... 83
Equations ................................................................................................................ 94
Maintenance and Service..................................................................................... 100
Troubleshooting ................................................................................................... 102
Warranty Certicate
iii
Contents
iv
Introduction
Introduction
Thank you for choosing the Hioki CM3286-50 AC Clamp Power Meter. To ensure your ability
to get the most out of this instrument over the long term, please read this manual carefully and
keep it available for future reference.
Read the separate document “Operating Precautions” carefully before using the instrument.
This clamp power meter provides functionality for measuring AC current, voltage, power, and
frequency as well as for detecting phase.
By connecting the Z3210 Wireless Adapter (option), you can record measurement data from the
instrument and create reports on a mobile device.
Latest instruction manual
The contents of this manual are subject to change, for example as a
result of product improvements or changes to specications.
The latest edition can be downloaded from Hioki’s website.
https://www.hioki.com/global/support/download
1
Introduction
Intended audience
This manual has been written for use by individuals who use the product or provide information
about how to use the product. In explaining how to use the product, it assumes electrical
knowledge (equivalent of the knowledge possessed by a graduate of an electrical program at a
technical high school).
Trademarks
• Microsoft Excel is a registered trademark or trademark of Microsoft Corporation in the United
States and other countries.
•
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG,
Inc. and any use of such marks by Hioki E.E. Corporation is under license. Other trademarks
and trade names are those of their respective owners.
Precautions during shipment
Handle it carefully so that it is not damaged due to a vibration or shock.
2
Introduction
Accuracy labeling
The instrument accuracy’s is expressed by dening a percentage of the reading, a percentage
of full scale, and limit value for errors in terms of digits.
Reading
(displayed value)
Full scale
(maximum display value)
Digit
(resolution)
Indicates the value displayed by the instrument. Limit values for reading errors
are expressed as a percentage of the reading (“% of reading” or “% rdg”).
Indicates the maximum display value for each measurement range.
Measurement range values for the instrument indicates that maximum display
value. Limit values for full-scale errors are expressed as a percentage of full
scale (“% of full scale” or “% f.s.”).
Indicates the minimum display unit (in other words, the smallest digit that can
have a value of 1) for a digital measuring instrument. Limit values for digit errors
are expressed using digits (“digits” or “dgt”).
Screen display
The instrument screen displays the alphanumeric characters as follows.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
1 2 3 4 5 6 7 8 9 0
4
P3P:
Balanced 3-phase active power
S
:
Balanced 3-phase apparent power
3P
Q
:
Balanced 3-phase reactive power
3P
PF
:
Balanced 3-phase power factor
3P
: Zero-cross phase angle
φ
P
:
P
P
Unbalanced 3-phase active power
+
+
1
2
3
S
:
S
S
Unbalanced 3-phase apparent power
+
+
1
2
3
Q
:
Q
Q
Unbalanced 3-phase reactive power
+
+
1
2
3
P
P
P
+
+
1
2
3
: Unbalanced 3-phase power factor
S
S
S
+
+
1
2
3
: 3-phase zero-cross phase angle
φ
3P
Notes(*) for table
*1: Value of the measured phase will be calculated and displayed.
*2: Different calculation methods are used for 3-phase/3-wire and 3-phase/4-wire
circuits. For more informa ion, see the list of equations.
*3: Only 3-phase active power (
measured for 3-phase/3-wire circuits.
P
P
+
), active power 1 (
1
2
P
), and active power 2 (
1
Screen, Basic Operation
–
P
P
+
P
) are
2
1
P
1
2
P
2
35
Single-phase Energy Meter Comparison Function [Setting Wh]
Single‑phase Energy Meter Comparison Function
[Setting Wh]
This function allows you to compare the actual energy value (measured value) from an energy
meter with the theoretical value.
There are two ways to start and stop integration:
• Start/stop at 1 cycle based on the energy meter ’s instrument constant: 1-cycle mode
• Start/stop based on a xed amount of energy as measured by the energy meter: Fixed energy
mode
IMPORTANT
Energy may not be calculated properly in the following circumstances:
• If the power line of the measurement object, instrument connection, or meter constant (for
the watt-hour meter) is set incorrectly.
• If integration is not started and stopped as described above.
• If the instrument is being used outside its operating temperature and humidity range.
• If the instrument is being used in close proximity to a device that emits powerful
electromagnetic radiation or a device that carries an electrical charge.
• If the instrument is being used in close proximity to a device that emits a strong magnetic
eld, for example a transformer, high-current circuit, or wireless device.
51
Single-phase Energy Meter Comparison Function [Setting Wh]
Energy meter comparison function settings screen
No.01 to No.10: 1-cycle mode
0.10 kWh to 0.01 kWh: Fixed energy mode
SET No.
(main display)
oFF
no. 01 3200 cyc./1 kWh
no. 02 1600 cyc./1 kWh
no. 03 1200 cyc./1 kWh
no. 04 1000 cyc./1 kWh
no. 05 600 cyc./1 kWh
no. 06 500 cyc./1 kWh
Setting value
None (single-phase active
power measurement)
Changing
the setting
value
None no. 07 300 cyc./1 kWh
SET No.
(main display)
no. 08 250 cyc./1 kWh
no. 09 150 cyc./1 kWh
no. 10 125 cyc./1 kWh
0.10 kWh 0.10 kWh –
0.05 kWh 0.05 kWh –
0.01 kWh 0.01 kWh –
56
: Enable, : –: Disable
Setting value
Changing
the setting
value
Manual Hold, Automatic Hold
Measurement
function*
AC current Current RMS value
AC voltage Voltage RMS value
Single-phase power,
balanced 3-phase
power
*: No automa ic hold function is available for single-phase active energy measurement.
Fluctuation range Threshold value
6.000 A range: within 60 counts
60.00 A range: within 60 counts
600.0 A range: within 60 counts
within 120 counts
Current and voltage RMS values satisfy
above condi ions, and active power is
within 5 counts.
Current RMS value
6 000 A range: 59 counts
60.00 A range: 59 counts
600.0 A range: 59 counts
Voltage RMS value
799 counts
Current and voltage RMS values are
within the above counts.
59
Wireless Communications Function
•
The communication distance is about 10 m with a clear line of sight. The communicable
distance may vary greatly depending on the presence of an obstruction (wall or metallic
shielding object) and the distance between the oor (ground) and instrument. To ensure the
stable communication, make sure that the radio wave intensity is sufcient.
• GENNECT Cross is free of charge. However, the customer is responsible for the cost to
download the application software and connect to the Internet when using the software.
• GENNECT Cross may not operate properly depending on the mobile device.
• The Z3210 uses the 2.4 GHz band wireless technology. When there is a device that uses the
same frequency band such as a wireless LAN (IEEE 802.11.b/g/n) near your mobile device,
the communication may not be established.
• At the time of initial startup (with no device registered), GENNECT Cross starts up with the
Instrument Settings screen.
• When the instrument is nearby, it is automatically connected and registered in the connection
setting screen (up to 8 devices).
• Wait for 5 to 30 seconds for the instrument to be connected and registered after turning on the
power to the instrument. If the instrument is not registered after 1 minute, restart GENNECT
Cross and the instrument.
• When you turn on the instrument for the rst time after installing the Z3210, the instrument will
start with the wireless communications function enabled. The setting will be retained even after
power off.
67
Wireless Communications Function
Z3210‑to‑Excel® direct data entry function
(Excel® direct input function, HID function)
Concurrent use of GENNECT Cross and HID function is not available.
The human interface device (HID) prole, with which the Z3210 Wireless Adapter is equipped, is
a prole same as that wireless keyboards use.
Preparatory to data entry, open an Excel® le on your mobile device or computer
HID ON
HID OFF When you wish to use GENNECT Cross, disable the HID function.
The setting whether the HID function has been enabled or disabled will not be saved in the
instrument but in the Z3210.
and choose a cell. When the instrument’s display freezes, the measured values
will be entered on the cells. The use of this function with the automatic hold
function enabled comes in handy. (p. 57)
71
Specications
General specications
Operating environment Indoors, pollution degree 2, altitude up to 2000 m (6562 ft )
Operating temperature
and humidity range
Storage temperature and
humidity range
Temperature −25°C (−13°F) to 65°C (149°F)
Humidity −25°C (−13°F) or higher but less than 40°C (104°F):
80% RH or less
40°C (104°F) or higher but less than 45°C (113°F):
60% RH or less
45°C (113°F) to 65°C (149°F): 50% RH or less
(non-condensing)
Temperature −25°C (−13°F) to 65°C (149°F)
Humidity −25°C (−13°F) or higher but less than 40°C (104°F):
80% RH or less
40°C (104°F) or higher but less than 45°C (113°F):
60% RH or less
45°C (113°F) to 65°C (149°F): 50% RH or less
(non-condensing)
Remove batteries before storing the instrument.
Specications
75
Specications
Dust resistance and
water resistance
Standards Safety: EN 61010
Power supply LR03 alkaline battery ×2
IP20 (When measuring voltage under completely dry conditions, when
measuring current owing through a hazardous live conductor under
completely dry conditions)
IP50 (When measuring resistance under completely dry conditions, when
measuring current owing through an insulated conductor under completely dry
conditions, during storage)
*IP20, IP50
The IP codes indicate the degree of protection provided by the enclosure of the
instrument for use in hazardous locations, entry of solid foreign objects, and
the ingress of water.
2: Protected against access to hazardous parts wi h ngers. The equipment
inside the enclosure is protected against entry by solid foreign objects larger
than 12.5 mm in diameter.
5: Protected against access to hazardous parts wi h wire measuring 1.0 mm
in diameter. Dustproof type (The penetra ion of dust cannot be prevented
completely, but quantities of dust that may hinder the stated operation of
equipment or safety cannot penetrate the enclosure.
0: The equipment inside the enclosure is not protected against the harmful
effects of water.
EMC: EN 61326
Rated supply voltage: 1.5 V DC × 2
Maximum rated power: 1200 mVA
76
Continuous operating
time
Dimensions Approx. 65W × 241H × 35D mm (2.56″W × 9.49″H × 1.38″D)
Jaw dimensions Approx. 79Wj × 20Dj mm (3.11″W × 0.79″D)
Maximum measurable
conductor diameter
Weight Approx. 450 g (15.9 oz.) (including batteries)
Product warranty
duration
Accessories See p. 3
Options See p. 5
Approx. 25 hours (without the Z3210)
Approx. 18 hours (with the Z3210 installed and wirelessly communicating)
O her prescribed conditions: When measuring 100 A AC, wi h the LCD not
backlighted, reference value at 23°C
(The Jaw is not included in the dimensions of width and depth but in that of
height.)
46 mm
φ
3 years
Specications
77
Specications
Input, output, and measurement specications
Basic specications
Measurement items
Maximum input current As per the frequency derating characteristics (p. 79).
Maximum rated voltage
to terminal
Maximum rated voltage
to earth
Maximum measuring
voltage
Measurement method True RMS measurement with digital sampling
Measurement terminals COM terminal, V terminal
Input impedance 1 M
AC current RMS value/AC current peak value (no polarity)/AC current frequency
AC voltage RMS value/AC voltage peak value (no polarity)/AC voltage frequency
Single-phase active power/Single-phase apparent power/Single-phase reactive
power/Single-phase power factor/Single-phase zero-cross phase angle
Balanced 3-phase active power/Balanced 3-phase reactive power/Balanced
3-phase apparent power/Balanced 3-phase power factor/Balanced 3-phase
zero-cross phase angle
Single-phase active energy (only positive values added)/Phase detec ion
(up to 200 Hz, 600 A or less; above 200 Hz, 120000 AHz or less)
600 V AC
600 V AC (Measurement category IV), 1000 V AC (Measurement category III)
Anticipated transient overvoltage 8000 V
600 V AC
or greater
Ω
78
Specications
Accuracy specications
Accuracy guarantee
conditions
Input conditions for
guaranteed accuracy
Effects of external
magnetic elds
Effects of conductor
position
Temperature coefcient Add “measurement accuracy × 0.1/°C” (excluding 23°C ±5°C [73°F ±9°F]).
Effects of sensor phase ±1° (50 Hz to 60 Hz)
See “Accuracy Table” (p. 83).
Accuracy guarantee duration: 1 year
Accuracy guarantee duration after adjustment made by Hioki: 1 year
Accuracy guarantee temperature and humidity range:
23°C ±5°C (73°F ±9°F), 80% RH or less (non-condensing)
Number of jaw open/close cycles: 10000 times or less
Sine wave input
DC/AC 60 Hz, with a 400 A/m external magnetic eld: 0.10 A or less
At all positions around the jaw’s center-point reference: within ±0.5%
(100 A input, f ≤ 100 Hz)
80
Specications
Harmonic measurement specications (with Z3210 connected)
All operations are performed by the GENNECT Cross application software. The following specications apply
only to use of the GENNECT Cross’s harmonic analysis functionality. Perform sampling of data by instrument
and harmonic analysis calculations by GENNECT Cross.
Measurement
conditions
Measurement
functionality
Analysis window width 1 cycle (50 Hz/60 Hz)
Window type Rectangular
Number of data points
analyzed
Orders analyzed 1st to 30th
Items analyzed Harmonic level
Fundamental frequency 50 Hz/60 Hz
AC current/AC voltage (controlled by application software)
256
(RMS values for current harmonics [A], RMS values for voltage harmonics [V])
Harmonic content percentage
(content percentages for current harmonics [%], content percentages for voltage
harmonics [%])
Total harmonic distortion
(THD-F and THD-R for current [%], THD-F and THD-R for voltage [%])
81
Specications
Range (minimum
resolution)
Accuracy input range Input of 1% of range or greater for each order
Crest factor 3 or less for the 6 A and 60 A current ranges
Data refresh 5 s (reference value)
Measurement accuracy Harmonic level
AC current 600.0 A
AC voltage 600.0 V (0.1 V)
1.6 or less for the 600 A current range and the 600 V voltage range
(RMS value)
Harmonic content
percentage
Total harmonic
distortion
(0.1 A)
Order Accuracy
1 to 10 ±5.0% rdg ±10 dgt
11 to 20 ±10% rdg ±10 dgt
21 to 30 ±20% rdg ±10 dgt
±1 dgt for calculations performed using measured values
±1 dgt for calculations performed using measured values
60.00 A
(0.01 A)
82
6.000 A
(0.001 A)
Accuracy Table
(1) AC Current Measurement
The current RMS (
Automatic range threshold: Range up: Current RMS value greater than 6000 count
AC current RMS
I
)
(
RMS
I
) and current peak value (
RMS
Range down: Current RMS value less than 540 count
Range
(Accuracy guarantee
range)
6.000 A
(0.060 A to 6.000 A)
60.00 A
(0.60 A to 60.00 A)
600.0 A
(6.0 A to 600.0 A)
I
) ranges will change at the same time.
|PEAK|
Resolution Accuracy
Display range
0.001 A
0.000 A to 6.000 A
0.01 A
0.00 A to 60.00 A
0.1 A
0.0 A to 600.0 A
45 Hz ≤ f
≤ 66 Hz
±1.3% rdg
±3 dgt
±1.0% rdg
±3 dgt
±2.0% rdg
±5 dgt
±1.5% rdg
±5 dgt
66 Hz < f
≤ 500 Hz
Accuracy Table
500 Hz < f
≤ 1 kHz
±5.0% rdg
±5 dgt
±3.0% rdg
±5 dgt
–
83
Accuracy Table
AC current peak
I
I
|PEAK|
)
)
value (
Zero to Peak
No polarity
(absolute value
of the maximum
wave height
during the
display update
interval)
AC current
frequency
FREQ
(
84
Range
(Accuracy guarantee
range is specied in
terms of current RMS
values.)
6.000 A
(0.060 A to 6.000 A)
60.00 A
(0.60 A to 60.00 A)
600.0 A
(6.0 A to 600.0 A)
Range
(Accuracy guarantee
range)
999.9 Hz
(45.0 Hz to 999.9 Hz)
Resolution Accuracy
Display range
0.01 A
0.00 A to 18.00 A
0.1 A
0.0 A to 180.0 A
1 A
0 A to 1000 A
Resolution
Display range
0.1 Hz
45.0 Hz to 999.9 Hz
45 Hz ≤ f
≤ 66 Hz
±3.0% rdg ±5 dgt
±2.5% rdg ±5 dgt
Current frequency values are shown as
“– – – –” when the current RMS value is
less than 150 count. Current frequency
values of less than 45.0 Hz are shown
as “– – – –.”
±0.3% rdg ±3 dgt
66 Hz < f
≤ 500 Hz
Accuracy
500 Hz < f
≤ 1 kHz
±5.0% rdg
±5 dgt
±4.0% rdg
±5 dgt
–
(2) AC Voltage Measurement
AC voltage RMS
U
RMS
)
value (
AC voltage peak
U
|PEAK|
)
value (
Zero to Peak
No polarity
(absolute value
of the maximum
wave height
during the display
update interval)
AC voltage
frequency
FREQ
)
(
U
Range
(Accuracy guarantee
range)
600 V
(80.0 V to 600.0 V)
Range
(Accuracy guarantee
range is specied in
terms of voltage RMS
values.)
600 V
(80.0 V to 600.0 V)
Range
(Accuracy guarantee
range)
999.9 Hz
(45.0 Hz to 999.9 Hz)
Resolution Accuracy
Display range
0.1 V
0.0 V to 600.0 V
45 Hz ≤ f
≤ 66 Hz
±0.7% rdg
±3 dgt
66 Hz < f
≤ 500 Hz
±1.0% rdg
±5 dgt
Resolution Accuracy
Display range
45 Hz ≤ f
≤ 66 Hz
66 Hz < f
≤ 500 Hz
1 V
0 V to 1000 V
±2.5% rdg ±5 dgt
Resolution Accuracy
Voltage frequency values are shown as
Maximum
display
0.1 Hz
999.9 Hz
“– – – –” when he voltage RMS value is
less than 150 count. Voltage frequency
values of less than 45.0 Hz are shown as
“– – – –.”
±0.3% rdg ±3 dgt
Accuracy Table
500 Hz < f
≤ 1 kHz
±3.0% rdg
±5 dgt
500 Hz < f
≤ 1 kHz
±4.0% rdg
±5 dgt
85
Accuracy Table
(3) Single‑phase power measurement, balanced 3‑phase/4‑wire power measurement
Automatic range threshold: Range up: Current RMS value greater than 6000 count
Range down: Current RMS value less than 540 count
Effective
measuring range
Single‑phase
active power/
Balanced
3‑phase/4‑wire
active power
P
)
(P /
(3P4W)
86
Current RMS value
I
(
)
RMS
Voltage RMS value
U
)
(
RMS
0.060 A to 600.0 A
Value must fall within the current measurement range’s
guaranteed accuracy range.
80.0 V to 600.0 V
Frequency 50 Hz/60 Hz
Range conguration (minimum resolution) Current range
6.000 A 60.00 A 600.0 A
Voltage range 600.0 V Single‑
phase
3‑Phase
4‑Wire
Accuracy (Power factor =1) Single‑
phase
3‑Phase
4‑Wire
3.600 kW
(0.001 kW)
10.80 kW
(0.01 kW)
±2.0% rdg
±7 dgt
±2.0% rdg
±3 dgt
36.00 kW
(0.01 kW)
108.0 kW
(0.1 kW)
±1.7% rdg ±5 dgt
±1.7% rdg ±2 dgt
360 0 kW
(0.1 kW)
1080 kW
(1 kW)
Accuracy Table
Single‑phase
apparent power/
Balanced
3‑phase/4‑wire
apparent power
S
(S /
)
(3P4W)
Single‑phase
reactive power/
Balanced
3‑phase/4‑wire
reactive power
Q
(Q /
(3P4W)
)
Single‑phase
power factor/
Balanced
3‑phase/4‑wire
power factor
PF / PF
(
(3P4W)
)
Zero‑cross phase
angle (φ)*
*: Value is calculated based on the measurement of the zero-cross phase difference for the voltage and
current waveforms (positive [no sign] when the current lags the voltage and negative when the current
leads the voltage).
Accuracy ±1 dgt relative to calculation from measured values
Range
conguration
For the above active power range conguration, the unit [W] is
replaced by [VA] for apparent power values. For reactive power
values, the unit [W] is replaced by [var].
Accuracy ±1 dgt relative to calculation from measured values
Range
Regeneration −1.000 to −0.001
conguration
Consumption 0.000 to 1.000
Accuracy ±3°
Range
conguration
Lead −180.0° to −0.1°
Lag 0.0° to 179.9°
87
Accuracy Table
(4) Balanced 3‑phase/3‑wire power measurement
Automatic range threshold: Range up: Current RMS value greater than 6000 count
Range down: Current RMS value less than 540 count
Effective
measuring
range
Balanced
3‑phase/3‑wire
active power
P
)
(
(3P3W)
Balanced
3‑phase/3‑wire
apparent power
S
)
(
(3P3W)
Balanced
3‑phase/3‑wire
reactive power
Q
)
(
(3P3W)
88
Current RMS
value (
Voltage RMS
value (
0.060 A to 600.0 A
Value must fall within the current measurement range’s guaranteed
I
)
RMS
accuracy range.
80.0 V to 600.0 V
U
)
RMS
Frequency 50 Hz/60 Hz
Accuracy ±3.0% rdg ±10 dgt (Power factor =1)
Range
conguration
(minimum
resolution)
Voltage range 600.0 V
6.000 A 60.00 A 600.0 A
7.200 kW
(0.001 kW)
Current range
72.00 kW
(0.01 kW)
The unit [W] is replaced by [VA] for apparent power values.
Accuracy ±1 dgt relative to calcula ion from measured values
Range
conguration
For he above active power range conguration, the unit [W] is replaced
by [var].
720.0 kW
(0.1 kW)
Accuracy Table
Balanced
3‑phase/3‑wire
power factor
PF
)
(
(3P3W)
Balanced
3‑phase/3‑wire
zero‑cross
phase angle
)*
(
φ
(3P3W)
*: Value is calculated based on the measurement of the zero-cross phase difference for the voltage and
current waveforms (positive [no sign] when the current lags the voltage and negative when the current
leads the voltage).
Accuracy ±3° ±2 dgt (Calculated from the balanced 3-phase/3-wire zero-cross
phase angle)
Range
conguration
Regeneration −0.001
Consumption 0.000 to 1.000
Accuracy ±3°
Range
Lead −90.0° to −0.1°
conguration
Lag 0.0° to 90.0°
(5) Single‑phase active energy measurement (AC)
Effective
measuring
range
I
Current RMS value (
Voltage RMS value (
) 0.060 A to 600.0 A
RMS
U
) 80.0 V to 600.0 V
RMS
Value must fall within the current
measurement range’s guaranteed accuracy
range.
Frequency 50 Hz/60 Hz
89
Accuracy Table
Single‑phase
active energy
(Wh)
Integration
time display
90
Measurement method Only the consump ion (positive) component
Range
conguration
99.99 Wh 0.00 Wh to 99.99 Wh
999.9 Wh 100 0 Wh to 999.9 Wh
9.999 kWh 1.000 kWh to 9.999 kWh
99.99 kWh 10.00 kWh to 99.99 kWh
999.9 kWh 100 0 kWh to 999.9 kWh
9999 kWh 1000 kWh to 9999 kWh
59:59 [min:sec] The time is incremented by 1 s from 00:00
48:00 [hour:min]
Display range • After he single-phase active power range
of active power is integrated* every 0.5 sec.
* When integration is stopped, the last 0.5 s
of energy measured is divided into 5 equal
intervals and integrated every 0.1 s.
is selected, integration starts with a value
of 0.00 Wh. Only auto-range opera ion is
supported for active energy measurement.
When values exceed 9999 count, the
range is switched to the next higher range.
• The range is xed to the active power
range in use when integrated began.
[min:sec].
When 59:59 [min:sec] is exceeded, the
range is switched to the 48:00 [hour:min]
range.
During integration using the 48:00 [hour:min]
range, the
“ : ”
display ashes every 0.5 s.
Accuracy Table
(6) Phase detection
Detected voltage range 80 V AC to 600 V AC
Detection target frequency 50 Hz/60 Hz (sine wave)
Phase order detection* Normal phase (Display: 123)
Reverse phase (Display: 321)
Open phase or unable to measure (Display: “ – – – –”)
*: Measurement is not possible if the second measured value fails to stabilize within 10 s once the display
changes to the second measurement screen.
91
Accuracy Table
Range conguration when setting a CT ratio
CT ratio
Current RMS
value
Current peak
value
Single-phase
active power
1/1
(default value)
600.0 A 6000 A – –
60.00 A 600.0 A 6000 A –
6.000 A 60.00 A 600.0 A 6000 A
1000 A 10.00 kA – –
180.0 A 1800 A 18.00 kA –
18.00 A 180.0 A 1800 A 18.00 kA
360.0 kW 3600 kW – –
36.00 kW 360.0 kW 3600 kW –
3.600 kW 36.00 kW 360.0 kW 3600 kW
1/10 1/100 1/1000 Remarks
92
CT ratio 1/1 Same accuracy
specications as 600.0 A.
CT ratio 1/1 Same accuracy
specications as 60.00 A.
CT ratio 1/1 Same accuracy
specications as 6.000 A.
CT ratio 1/1 Same accuracy
specications as 600.0 A.
CT ratio 1/1 Same accuracy
specications as 60.00 A.
CT ratio 1/1 Same accuracy
specications as 6.000 A.
CT ratio 1/1 Same accuracy
specications as 360.0 kW.
CT ratio 1/1 Same accuracy
specications as 36.00 kW.
CT ratio 1/1 Same accuracy
specications as 3.600 kW.
Accuracy Table
CT ratio
Balanced
3-phase/3-wire
active power
Balanced
3-phase/4-wire
active power
• Add the accuracy of the appropriate CT.
• The unit is replaced as below for apparent power and reactive power, relative to the active power range.
Apparent power: kVA
Reactive power: kVAR
*1: Multiply the digit error indicated in the accuracy specications noted in the “Remarks” column by 10.
1/1
(default value)
1/10 1/100 1/1000 Remarks
720.0 kW 7200 kW – –
72.00 kW 720.0 kW 7200 kW –
7 200 kW 72.00 kW 720.0 kW 7200 kW
1
1080 kW 9999 kW*
108.0 kW 1080 kW 9999 kW*
– –
1
10.80 kW 108.0 kW 1080 kW 9999 kW*
CT ratio 1/1 Same accuracy
specications as 720.0 kW.
CT ratio 1/1 Same accuracy
specications as 72.00 kW.
CT ratio 1/1 Same accuracy
specications as 7.200 kW.
CT ratio 1/1 Same accuracy
specica ions as 1080 kW.
CT ratio 1/1 Same accuracy
–
specica ions as 108.0 kW.
CT ratio 1/1 Same accuracy
1
specica ions as 10.80 kW.
93
Equations
22
PS −
S
P
{ }
Equations
(1) Single‑phase power measurement
Apparent power
Reactive power
Power factor
S U
Q
PF
(2) Balanced 3‑phase/3‑wire power measurement
Balanced 3‑phase/3‑wire
zero‑cross phase angle
Balanced 3‑phase/3‑wire
power factor
Balanced 3‑phase/3‑wire
active power
Balanced 3‑phase/3‑wire
apparent power
Balanced 3‑phase/3‑wire
reactive power
φ
PF
P
S
Q
(3P3W)
(3P3W)
(3P3W)
(3P3W)
(3P3W)
[W]
[VA]
[var]
RMS
cos
3
∙
I
PF
RMS
φ
−30°
φ
• The active power P has no sign
during consumption and a negative
sign during generation.
• Due to the effects of measurement
error, S=|P| and Q=0 are used when
S<|P
|.
)33(
WP
SWP⋅⋅
)33(
S⋅3
2
PS −
)33(2)33( WPWP
• The symbol
zero-cross phase angle of he
voltage
• The symbol S represents
the apparent power of the
line voltage
current
represents the
φ
U
and the current
12
U
and the wire
12
I
.
1
I
.
1
94
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