Instruction Manual
CLAMP POWER METER
KEW 2062/2062BT
Contents KEW 2062/2062BT
KEW 2062/2062BT Contents
KEW 2062/2062BT - 2 -
Chapter 7 Other functions ...................................................................................... 37
[Data hold function] ........................................................................................... 37
[Auto-backlight-off] ............................................................................................ 37
[Auto-power-off] ................................................................................................ 37
[Auto-ranging – current] .................................................................................... 37
Chapter 8 Bluetooth communication....................................................................... 38
8.1 KEW Power*(asterisk) features ..................................................................... 39
Chapter 9 Specifications ......................................................................................... 40
9.1 Safety specifications ...................................................................................... 40
9.2. General specifications .................................................................................. 40
9.3 Measurement specifications .......................................................................... 41
AC current function ..................................................................................... 41
AC Voltage function .................................................................................... 42
Power function ........................................................................................... 43
Voltage current phase difference (θ) [deg] (at Single-phase 2-wire
measurement only) ........................................................................................... 45
Harmonics function ................................................................................... 46
Phase detection function ........................................................................... 48
Unpacking ................................................................................................................... 3
Safety precautions ....................................................................................................... 3
Chapter 1 Functional overview .............................................................................. 7
Chapter 2 KEW 2062/2062BT features ................................................................ 8
Chapter 3 Basic operation ..................................................................................... 9
3.1 Function switch ................................................................................................ 9
3.2 Buttons and switches ....................................................................................... 9
3.3 Symbols displayed in LCD ............................................................................. 11
3.4 Unit of measured value .................................................................................. 11
Chapter 4 Getting started ..................................................................................... 12
4.1 Turning on KEW 2062/2062BT ...................................................................... 12
4.2 Battery level check ........................................................................................ 12
LCD indication/ Battery level indicator .............................................................. 13
How to install batteries: ..................................................................................... 13
4.3 Test leads connection (to KEW 2062/2062BT) .............................................. 14
4.4 Connection to the measured object ............................................................... 14
Chapter 5 Settings ............................................................................................... 16
Item selection (Switch the displayed items) ...................................................... 16
Wiring systems ................................................................................................. 17
VT/ CT ratio ...................................................................................................... 17
Measurement using VT/ CT ratio ...................................................................... 18
Buzzer ON/ OFF ............................................................................................... 19
Backlight ON/ OFF ........................................................................................... 19
Frequency of nominal voltage ........................................................................... 20
System reset .................................................................................................... 20
Chapter 6 Display items by measurement function .............................................. 21
6.1 RMS/ Frequency measurement ..................................................................... 21
RMS current, frequency .................................................................................... 21
RMS voltage, frequency ................................................................................... 22
6.2 Single/ Three-phase (balance) Power measurement .................................... 23
Connection diagram for Single-phase 2-wire (1P2W) ....................................... 23
Connection diagram for Single-phase 3-wire (1P3W) ....................................... 23
Connection diagram for balance Three-phase 3-wire (3P3W) .......................... 24
Connection diagram for balance Three -phase 4-wire (3P4W) ......................... 24
Switching display .............................................................................................. 25
6.3 Three-phase (unbalance) power measurement ............................................. 26
Three-phase 3-wire (3P3W) unbalance ............................................................ 26
Three-phase 4-wire (3P4W) unbalance ............................................................ 29
6.4 Harmonics measurement .............................................................................. 32
Current harmonics distortion factor, content rate, RMS value ........................... 32
Voltage harmonics distortion factor, content rate, RMS value ........................... 33
Harmonics distortion factor THD-R/ THD-F ...................................................... 35
6.5 Phase detection ............................................................................................. 36
- 1 - KEW 2062/2062BT
KEW 2062/2062BT Contents
Chapter 7 Other functions ...................................................................................... 37
[Data hold function] ........................................................................................... 37
[Auto-backlight-off] ............................................................................................ 37
[Auto-power-off] ................................................................................................ 37
[Auto-ranging – current] .................................................................................... 37
Chapter 8 Bluetooth communication....................................................................... 38
8.1 KEW Power*(asterisk) features ..................................................................... 39
Chapter 9 Specifications ......................................................................................... 40
9.1 Safety specifications ...................................................................................... 40
9.2. General specifications .................................................................................. 40
9.3 Measurement specifications .......................................................................... 41
AC current function ..................................................................................... 41
AC Voltage function .................................................................................... 42
Power function ........................................................................................... 43
Voltage current phase difference (θ) [deg] (at Single-phase 2-wire
measurement only) ........................................................................................... 45
Harmonics function ................................................................................... 46
Phase detection function ........................................................................... 48
KEW 2062/2062BT - 2 -
Unpacking KEW 2062/2062BT
1
Clamp power meter
KEW 2062 / KEW 2062BT : 1 pce.
MODEL7290: 1 set
* Red, black, and yellow: 1 pce. each with alligator clips
3
Batteries
Alkaline size AA battery (LR6) x 2 pcs.
4
Instruction manual
: 1 pce.
5
Soft case
MODEL9198 : 1 pce.
● In case any of the items listed above are found to be damaged or missing or if the printi ng
is unclear, please contact your local KYORITSU distributor.
: is reserved for conditions and actions that are likely to cause serious or fatal
injury.
: is reserved for conditions and actions that can cause serious or fatal injury.
: is reserved for conditions and actions that can cause injury or instrument
damage.
KEW 2062/2062BT Safety precautions
KEW 2062/2062BT - 4 -
Meaning of symbols on the instrument:
User must refer to the explanations in the instruction manual.
Instrument with double or reinforced insulation
This instrument can clamp a bare conductor where the voltage
to be measured is lower than the circuit – voltage a gainst earth
values specified by the marked measurement category.
AC (Alternating current)
(Functional) Earth terminal
This instrument satisfies the marking requirement defined in the
WEEE Directive (2002/96/EC). This symbol indicates separate
collection for electrical and electronic equipment.
Measurement Category
To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards
for various electrical environments, categorized as O to CAT IV, and called measurement
categories. Higher-numbered categories correspond to electrical environment s with greater
momentary energy, so a measuring instrument designed for CAT III environments can
endure greater momentary energy than one designed for CAT II.
O : Circuits which are not directly connected to the mains power supply.
CAT II : Electrical circuits of equipment connec ted to an AC electrical outlet by a power cord.
CAT III : Primary electrical circuits of the equipment connected directly to the distribution panel,
and feeders from the distribution panel to outlets.
CAT IV : The circuit from the servi ce drop to the service entrance, and to the power meter and
primary overcurrent protection device (distribution panel).
～
Unpacking
We thank you for purchasing our clamp power meter KEW 2062 / KEW2062BT.
Please check that the following accessories are packed with the instrument.
[Basic package]
2
Test leads
Safety precautions
It is essential that the above instructions are adhered to. Failure to follow the above instructions
may cause injury, instrument damage and/or damage to equipment und er test. Kyoritsu assumes
no responsibility for damage and injury c aused by misuse or not following the instructions in the
manual.
This instrument has been designed, manufactured and tested according to IEC 61010:
Safety requirements for Electronic Measuring apparatus, and delivered in the best condition
after passing quality control tests.
This instruction manual contains warnings and safety procedures which have to be
observed by the user to ensure safe operation of the instrument and to maint ain it in safe
condition. Therefore, read through these operating instructions before starting to use the
instrument.
WARNING
● Read through and understand the instructions contained in this manual before using the
instrument.
● Keep the manual at hand to enable quick reference whenever necessary.
● The instrument is to be used only in its intended applications.
● Understand and follow all the safety instructions contained in the manual.
The symbol indicated on the instrument, means that the user must refer to the related
parts in the manual for safe operation of the instrument. It is essential to read the
instructions wherever the symbol appears in the manual.
DANGER
WARNING
CAUTION
- 3 - KEW 2062/2062BT
KEW 2062/2062BT Safety precautions
values specified by the marked measurement category.
This instrument satisfies the marking requirement defined in the
collection for electrical and electronic equipment.
～
Meaning of symbols on the instrument:
User must refer to the explanations in the instruction manual.
Instrument with double or reinforced insulation
This instrument can clamp a bare conductor where the voltage
to be measured is lower than the circuit – voltage a gainst earth
AC (Alternating current)
(Functional) Earth terminal
WEEE Directive (2002/96/EC). This symbol indicates separate
Measurement Category
To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards
for various electrical environments, categorized as O to CAT IV, and called measurement
categories. Higher-numbered categories correspond to electrical environments with greater
momentary energy, so a measuring instrument designed for CAT III environments can
endure greater momentary energy than one designed for CAT II.
O : Circuits which are not directly connected to the mains power supply.
CAT II : Electrical circuits of equipment connec ted to an AC electrical outlet by a power cord.
CAT III : Primary electrical circuits of the equipment connected directly to the distribution panel,
and feeders from the distribution panel to outlets.
CAT IV : The circuit from the servi ce drop to the service entrance, and to the power meter and
primary overcurrent protection device (distribution panel).
KEW 2062/2062BT - 4 -
Safety precautions KEW 2062/2062BT
KEW 2062/2062BT Safety precautions
KEW 2062/2062BT - 6 -
WARNING
● Never attempt to make any measurement if any abnormal conditions, s uch as a broken
cover or exposed metal parts are present on the Instrument, or test leads.
● Verify proper operation on a known source before use or taking action as a result of
indication of the instrument
● Do not install substitute parts or make any modification to the instrument. Return the
instrument to your local KYORITSU distributor for repair or re-calibration in case of
suspected faulty operation.
CAUTION
● Use of this instrument is limited to domestic, commercial and light industry applications.
Strong magnetic interference or strong magnetic fields, generated by large currents , may
cause malfunction of the instrument.
● Caution should be taken since conductors under test may be hot.
● Never apply currents or voltages exceeding the maximum allowable input to each range .
● Do not apply currents or voltages for the test leads or current sensors while the instrument
is off.
● Don’t use the instrument at dusty places or to be spattered.
● Don’t use the instrument under a strong electric storm or in the vicinity of energized object.
● Never give strong vibrations or drop shocks.
- Test leads -
● Connect the plug firmly to the corresponding terminal.
● Do not pull or twist the test leads with excessive force to prevent damage.
- Battery -
● Brand and type of the batteries should be harmonized.
- Treatment after use -
● Set the function switch to “OFF” position and remove all the cables from the instrument.
● Take out batt eries if the instrument is to be stored and will not be in use for a long period.
● Never give strong vibrations or drop shocks when carrying the instrument.
● Do not expose the instrument to direct sunlight, high temperature, humidity or dew.
● Use a damp cloth with neutral detergent or water for cleaning the instrument. Do not use
abrasives or solvents.
● If the instrument is wet, dry and store it.
Carefully read and follow the instructions with DANGER, WARNING, CA UTION
symbols and NOTE described in each section.
● The instrument is to be used only in its intended applications or conditions. Otherwise,
safety functions equipped with the instrument will not work, and instrument damage or
serious personal injury may occur. Verify proper operation on a known source before taking
action as a result of the indication of the instrument.
● Wear protective insulated gears if electrical shock or other danger is possible.
● This instrument is rated to 300 V AC for CAT IV, 600 V AC for CAT III, and 1000 V AC for CAT
II. With attention to the measurement category to which the object under test belongs, do not
make measurements if voltage against earth in the circuit under test exceeds these values .
● Do not attempt to make measurement in the presence of flammable gasses. Otherwise,
the use of the instrument may cause sparking, which can lead to an explosion.
● Never attempt to use the instrument if its surface or your hand is wet.
- Measurement -
● Do not exceed the maximum allowable input of any measuring range.
● Never open the battery compartment cover during a measurement.
- Clamp sensor -
● Confirm that the measured current rating of the circuit under test and the instrument;
in addition, don’t exceed the rated voltage against earth.
● Keep your fingers behind the barrier during a measurement.
Barrier: provides protection against electrical shock and ensuring the minim um required
clearance and creepage distances.
● Connect to the secondary side of a circuit breaker since a current capacity at the
primary side is large and dangerous.
● Do not touch two lines under test when opening the jaws.
- Test leads -
● Use only the ones supplied with the instrument.
● When the instrument and the test lead are combined and used together, whichever lower
category either of them belongs to will be applied. Confirm that the measured voltage rating
of the test lead is not exceeded.
● Connect the cables that are required for the desired measurement only.
● Connect the test leads to the instrument first, and only then connect them to the ci rcuit
under test.
● Keep your fingers behind the barrier during a measurement.
Barrier: provides protection against electrical shock and ensuring the minimum requi red
clearance and creepage distances.
● Never disconnect the test leads from the voltage input terminals of the instrument during
a measurement (while the instrument is energized).
● Do not touch two lines under test with the metal tips of the test leads.
● Never touch the metal tips of the test leads.
- Battery -
● Do not try to replace the batteries during a measurement.
DANGER
- 5 - KEW 2062/2062BT
KEW 2062/2062BT Safety precautions
suspected faulty operation.
● If the instrument is wet, dry and store it.
WARNING
● Never attempt to make any measurement if any abnormal conditions, s uch as a broken
cover or exposed metal parts are present on the Instrument, or test leads.
● Verify proper operation on a known source before use or taking action as a result of
indication of the instrument
● Do not install substitute parts or make any modification to the instrument. Return the
instrument to your local KYORITSU distributor for repair or re-calibration in case of
CAUTION
● Use of this instrument is limited to domestic, commercial and light industry applications.
Strong magnetic interference or strong magnetic fields, generated by large currents , may
cause malfunction of the instrument.
● Caution should be taken since conductors under test may be hot.
● Never apply currents or voltages exceeding the maximum allowable input to each range .
● Do not apply currents or voltages for the test leads or current sensors while the instrument
is off.
● Don’t use the instrument at dusty places or to be spattered.
● Don’t use the instrument under a strong electric storm or in the vicinity of energized object.
● Never give strong vibrations or drop shocks.
- Test leads -
● Connect the plug firmly to the corresponding terminal.
● Do not pull or twist the test leads with excessive force to prevent damage.
- Battery -
● Brand and type of the batteries should be harmonized.
- Treatment after use -
● Set the function switch to “OFF” position and remove all the cables from the instrument.
● Take out batt eries if the instrument is to be stored and will not be in use for a long period.
● Never give strong vibrations or drop shocks when carrying the instrument.
● Do not expose the instrument to direct sunlight, high temperature, humidity or dew.
● Use a damp cloth with neutral detergent or water for cleaning the instrument. Do not use
abrasives or solvents.
Carefully read and follow the instructions with
symbols and NOTE described in each section.
DANGER, WARNING, CAUTION
KEW 2062/2062BT - 6 -
Chapter 1 Functional overview KEW 2062/2062BT
KEW 2062/2062BT Chapter 2 KEW 2062 / 2062BT features
KEW 2062/2062BT - 8 -
Chapter 2 KEW 2062 / 2062BT features
① Current sensor
② Trigger (to open/ close the jaws)
③ Barrier
Provides protection against electrical shock and
ensuring the minimum required clearance and
creepage distances. Always keep your fingers behind
the barrier.
④ Function switch
Turn and select the desired measurement function.
This switch also works as power switch: set it to
“OFF” to turn off the instrument.
⑤ Data hold switch
Holds the displayed readings. The LCD shows “ ”
symbol while the result is being held in the display.
⑥ Mode button*
1, 2
Toggles the displayed results in the sequences:
MAX: maximum value -> MIN: minimum value ->
AVG: average value -> |PEAK|: crest factor
(absolute value).
⑦
Backlight button [◄]*
2
A long press turns on/ off the backlight.
⑦⑧
Item switching button [◄►]*
A short press toggles displayed items in sequences.
*1
Function ranges, related to current measurements, are
fixed while the LCD is showing MAX/ MIN/ AVG/ |PEAK|
(absolute value). The auto-ranging function is reactivated
when switching the display to instantaneous value.
*2 Buttons ⑥ to ⑧, ⑦ excluded, work differently
depending on the selected measurement function. For
further detail, see clause 3.2 Buttons and switches, P. 9,
and explanations about each function.
⑨ LCD
Field effect LCD with backlight
⑩ AC voltage input terminal
Connect the plug ⑪ of test lead (M-7290) to the corresponding terminal depending on the
wiring configuration to be tested.
⑪ Plug
⑫ Alligator clip
①
③
⑤
②
④
⑥ ⑨ ⑦ ⑧
⑫
⑪
⑩
Chapter 1 Functional overview
KEW 2062 / 2062BT is an advanced clamp power meter that is able to analyze the
harmonics for power quality check and verify phase sequences of power sources in various
wiring systems: of course, it can perform voltage/ current (in RMS) and power
measurements.
KEW 2062BT has Bluetooth communication function to connect itself with Bluetooth devices,
like a tablet, for remote monitoring and data saving.
Safety Construction
Designed to meet the international safety standard IEC 61010-1 CAT I V 300 V/ CAT III 600
V/ CAT II 1000V.
Wiring configuration
KEW 2062 / 2062BT supports: Single-phase 2-wire (Single-phase 3-wire), Three-phase
3-wire (two-wattmeter method), and Three-phase 4-wire.
Large-diameter clamp sensor
The current clamp sensor is able to clamp onto a wire up to 55mm in diameter.
Measurement and calculation
KEW 2062 / 2062BT can measure and calculate voltage, current, active/ reactive/ appar ent
power, power factor, voltage-current phase differences, and frequency.
Harmonics measurement
It is possible to measure and show each voltage/ current harmonic from 1st to 30t h (in
RMS.), content rate, and total distortion factor (THD-R/THD-F).
Phase detection
This function is to verify phase rotation and missing phases of power source.
Application
Measured results and waveform data can an be transferred to tablet devic es or
smartphones using Bluetooth (KEW 2062B T only). Special application “KEW
Power*(asterisk)” is available for reviewing the measured data.
- 7 - KEW 2062/2062BT
(TRMS display)
KEW 2062/2062BT Chapter 2 KEW 2062 / 2062BT features
Chapter 2 KEW 2062 / 2062BT features
① Current sensor
② Trigger (to open/ close the jaws)
⑫
③ Barrier
③
①
⑤
②
④
⑥ ⑨ ⑦ ⑧
*2 Buttons ⑥ to ⑧, ⑦ excluded, work differently
depending on the selected measurement function. For
further detail, see clause 3.2 Buttons and switches, P. 9,
and explanations about each function.
⑨ LCD
Field effect LCD with backlight
⑩ AC voltage input terminal
Connect the plug ⑪ of test lead (M-7290) to the corresponding terminal depending on the
wiring configuration to be tested.
⑪ Plug
⑫ Alligator clip
⑩
Provides protection against electrical shock and
ensuring the minimum required clearance and
creepage distances. Always keep your fingers behind
the barrier.
④ Function switch
Turn and select the desired measurement function.
This switch also works as power switch: set it to
“OFF” to turn off the instrument.
⑤ Data hold switch
Holds the displayed readings. The LCD shows “ ”
symbol while the result is being held in the display.
⑥ Mode button*
Toggles the displayed results in the sequences:
MAX: maximum value -> MIN: minimum value ->
AVG: average value -> |PEAK|: crest factor
(absolute value).
Backlight button [◄]*
⑦
A long press turns on/ off the backlight.
⑪
Item switching button [◄►]*
⑦⑧
A short press toggles displayed items in sequences.
*1
Function ranges, related to current measurements, are
fixed while the LCD is showing MAX/ MIN/ AVG/ |PEAK|
(absolute value). The auto-ranging function is reactivated
when switching the display to instantaneous value.
1, 2
2
KEW 2062/2062BT - 8 -
Chapter 3 Basic operation KEW 2062/2062BT
VT/ CT ratio,
the settings to the default conditions, perform system
reset.
Phase
the phase rotation sequence, and missing
value, content rate, and distortion factor
[THD-R/THD-F].
Shows: active/ reactive/ apparent power, power factor,
value.
V
A
Buttons and
switches
Hold down the Data hold button until the LCD shows “ ”
symbol: then the currently displayed value is held. While this
change even the input
symbol disappears.
button [◄►]
Mode button
Selects setting items and confirms the entered values.
Item switching
button [◄►]
A short press toggles display: <-> THD-F <-> THD-R <->
1st fundamental wave to 30th harmonics.
[►]
A long press switches voltage and current RMS values.
A short press toggles display: <-> Inst value <-> MAX <-> MIN
values and resume a measurement.
KEW 2062/2062BT 3.2 Buttons and switches
KEW 2062/2062BT - 10 -
Function
Buttons and
switches
Details
Power
1P2W
1P3W
Item switching
button
[◄►]
A short press toggles display: <-> active power, power factor
<-> active power, voltage-current phase differences <->
active and apparent power <-
> active and reactive power
<-> current and voltage RMS.
Mode button
A short press toggles display: <-> Inst value <-> MAX <->
MIN <-> AV G.
A long press resets measurements of MAX, MIN, and AVG
values and resume a measurement.
Power
3P3W
3P4W
Balance
Item switching
button
[◄►]
A short press toggles display: <-> active power, power factor
<-> active and apparent power <-
> active and reactive
power <-> current and voltage RMS.
Mode button
A short press toggles display: <-> Inst value <-> MAX <->
MIN <-> AV G. A long press resets measurements of MAX,
MIN, and AVG values and resume a measurement.
Power
3P3W
Unbalance
Item
switching
button
[►]
A sho rt press during a measurement:
Switches the phase to be measured from R(L1) to T(L3).
[◄►]
A short press while displaying the measured result:
Toggles displays: <-> Three -phase active power <->
R(L1)-phase active power <-> T(L2)-phase active power.
Mode button
A short press during a measurement: Switches between
active power and voltage and current values (RMS).
A long press while displaying the measured result:
Clears the displayed values and resume a measurement.
Power
3P4W
Unbalance
Item switching
button
[►]
A short press during a measurement:
Switches the phase to be measured: R(L1) -> S(L2) -> T(L3).
A short press while displaying the measured result:
Toggles displays: <-> active power, power factor <-> active
and apparent power <-> active and reactive power.
Mode button
A short press during a measurement:
Switches between
active power and voltage and current values (RMS).
A long press while displaying the measured result:
Clears the displayed values and resume a measurement.
～
V
～
A
Mode button
A short press toggles display: <-> Inst value <-> MAX <->
MIN <-> AV G < -> |PEAK| (peak value*).
A long press resets measurements of MAX, MIN, AVG, and
|PEAK| values and resume a measurement.
* |PEAK|: Shows the instantaneous peak value in absolute
value.
Chapter 3 Basic operation
3.1 Function switch
3.2 Buttons and switches
Function Description
Settings
SETUP
detection
Harmonics
Power
W
AC voltage Shows AC voltage RMS value, peak value, and frequency.
～
AC current
～
Function
Data hold button
---
Backlight button
Item switching
SETUP
Harmonics
Mode button
Changes and confirms the settings for wiring,
buzzer on/ off, backlight on/ off, nominal frequency 50/ 60Hz. To
restore all
Tests and shows
phase if there is any.
Shows voltage/ current (of the 1st fundamental waveform up to
30th harmonics) RMS
voltage-current phase differences, and voltage/ current (RMS)
Shows AC current RMS value, peak value, and frequency.
Details
function is activated, readings don’t
value varies. To exit from the hold mode, press the data hold
button again or switch the measurement functions: the “ ”
A long press turns on/ off the backlight.
[◄]
Toggles displayed items and changes the setting values.
<-> AV G.
A long press resets measurements of MAX, MIN, and AVG
- 9 - KEW 2062/2062BT
KEW 2062/2062BT 3.2 Buttons and switches
Buttons and
switches
A short press toggles display: <-> active power, power factor
> active and reactive power
<-> current and voltage RMS.
A short press toggles display: <-> Inst value <-> MAX <->
values and resume a measurement.
A short press toggles display: <-> active power, power factor
> active and reactive
power <-> current and voltage RMS.
MIN, and AVG values and resume a measurement.
A sho rt press during a measurement:
Switches the phase to be measured from R(L1) to T(L3).
A short press while displaying the measured result:
R(L1)-phase active power <-> T(L2)-phase active power.
A short press during a measurement: Switches between
and apparent power <-> active and reactive power.
Switches between
Clears the displayed values and resume a measurement.
Function
Details
Power
1P2W
1P3W
Power
3P3W
3P4W
Balance
Power
3P3W
Unbalance
Power
3P4W
Unbalance
V
～
A
～
Item switching
button
Mode button
Item switching
button
Mode button
Item
switching
button
Mode button
Item switching
button
Mode button
Mode button
[◄►]
[◄►]
[►]
[◄►]
[►]
<-> active power, voltage-current phase differences <->
active and apparent power <-
MIN <-> AV G.
A long press resets measurements of MAX, MIN, and AVG
<-> active and apparent power <-
A short press toggles display: <-> Inst value <-> MAX <->
MIN <-> AV G. A long press resets measurements of MAX,
Toggles displays: <-> Three -phase active power <->
active power and voltage and current values (RMS).
A long press while displaying the measured result:
Clears the displayed values and resume a measurement.
A short press during a measurement:
Switches the phase to be measured: R(L1) -> S(L2) -> T(L3).
A short press while displaying the measured result:
Toggles displays: <-> active power, power factor <-> active
A short press during a measurement:
active power and voltage and current values (RMS).
A long press while displaying the measured result:
A short press toggles display: <-> Inst value <-> MAX <->
MIN <-> AV G < -> |PEAK| (peak value*).
A long press resets measurements of MAX, MIN, AVG, and
|PEAK| values and resume a measurement.
* |PEAK|: Shows the instantaneous peak value in absolute
value.
KEW 2062/2062BT - 10 -
Chapter 3 Basic operation KEW 2062/2062BT
Unbalance measurement has been selected. Nothing is displayed for
balance measurement.
Total power: when “either “P1” or “P2” is displayed, it indicates the
power of the single-phase according to the display.
LCD displays the preset nominal frequency at harmonics measurement.
If set 50Hz, LCD displayed “50Hz”.
Negative (-) or positive (no symbol) mark is displayed according to the
Measurement specifications”.
Unit
KEW 2062/2062BT 3.4 Unit of measured value
KEW 2062/2062BT - 12 -
Chapter 4 Getting started
4.1 Turning on KEW 2062 / 2062BT
Note
● If the instrument is in powered-off state, though the function switch is set to any measure-
ment range, auto-power off function might be activated. Turn the function switch to OFF,
and then set the switch to the desired position to wake up the instrument.
Even though the instrument doesn’t wake up, the installed batteries may be totally
exhausted. Please replace the batteries with new ones and try again.
4.2 Battery level check
DANGER
● Never try to replace batteries during a measurement.
WARNING
● Before opening the battery compartment cover for battery replacement, disconnect all test
leads from the instrument and set the function switch to “OFF”.
● Do not replace batteries if the instrument is wet.
● Accurate measurement results cannot be obtained while the battery warning indicator
“
” is blinking. Stop using the instrument and replace the batteries with new ones
immediately. If the batteries are totally exhausted, the LCD doesn’t show anything nor
“ ” symbol.
When setting the function switch to any
position other than “OFF”, KEW 2062 /
2062BT gets started and all the LCD
segments are displayed fo
r 1 sec.
Confirm that there’re no chips of
segments.
3.3 Symbols displayed in LCD
Symbol
Battery indicator: shows remaining battery in 4 levels.
3.4 Unit of measured value
Bluetooth is available. (KEW2062BT only)
LCD display update is held.
Wiring configuration. No indication for single-phase.
Buzzer is disabled.
Type of total harmonics distortion factor.
Harmonics order: shows 1st (h-1) fundamental wave to 30th (h-30).
VT ratio other than 1/1 has been set.
CT ratio other than 1/1 has been set.
Appears to indicate the type of measured value.
polarity of a measured value. For further detail, please see “9.3
V RMS voltage A RMS current Hz
kW Active power kVar Reactive power kVA
PF Power factor deg
Details
V-A phase difference
- 11 - KEW 2062/2062BT
%
Frequency
Apparent power
Harmonics
content rate
KEW 2062/2062BT 3.4 Unit of measured value
Note
exhausted. Please replace the batteries with new ones and try again.
DANGER
● Never try to replace batteries during a measurement.
WARNING
When setting the function switch to any
r 1 sec.
Confirm that there’re no chips of
Chapter 4 Getting started
4.1 Turning on KEW 2062 / 2062BT
● If the instrument is in powered-off state, though the function switch is set to any measurement range, auto-power off function might be activated. Turn the function switch to OFF,
and then set the switch to the desired position to wake up the instrument.
Even though the instrument doesn’t wake up, the installed batteries may be totally
4.2 Battery level check
● Before opening the battery compartment cover for battery replacement, disconnect all test
leads from the instrument and set the function switch to “OFF”.
● Do not replace batteries if the instrument is wet.
● Accurate measurement results cannot be obtained while the battery warning indicator
“
” is blinking. Stop using the instrument and replace the batteries with new ones
immediately. If the batteries are totally exhausted, the LCD doesn’t show anything nor
“ ” symbol.
KEW 2062/2062BT - 12 -
position other than “OFF”, KEW 2062 /
2062BT gets started and all the LCD
segments are displayed fo
segments.
LCD indication/ Battery level indicator KEW 2062/2062BT
CAUTION
Battery level is low. Replace the batteries with new
ones.
Battery level is extremely low, and the instrument
doesn’t work normally. Stop using the instrument and
The instrument continues measurement even in this
state; however, Bluetooth will be disabled.
KEW 2062/2062BT 4.3 Test leads connection (to KEW 2062 / 2062BT)
KEW 2062/2062BT - 14 -
4.3 Test leads connection (to KEW 2062 / 2062BT)
The followings should be checked before the connection.
DANGER
● Use only the test leads supplied with this instrument.
● Connect the cables that are required for the desired measurement only.
● First, connect the plug of the test lead to the instrument. Only then connect to the
measurement line.
● Never disconnect the test lead from the voltage input terminal of the instrument during a
measurement (while the instrument is energized).
WARNING
● Never attempt to make measurement if any abnormal conditions are noted, such as a crack
or exposed metal parts.
CAUTION
● Confirm that the instrument is powered off, and then connect the test leads.
● Connect to the instrument first, firmly into the corresponding terminal.
Connect the test leads per the following procedures.
1 Ensure that KEW 2062 / 2062BT is turned off.
2 Connect the test lead to AC voltage input terminal
on the instrument.*
* The number of test leads to be connected
depends on the wiring configuration.
4.4 Connection to the measured object
The following should be checked before the connection.
DANGER
● This instrument is rated to 300 V AC for CAT IV, 600 V AC for CAT III, and 1000V AC for
CAT II
. With attention to the measurement category to which the object under test
belongs, do not make measurements on a circuit in which voltage exceeds these values.
● Use only the test leads designed for this instrument.
● Always connect the test leads to the instrument first.
● When the instrument and the test lead are combined and used together, whichever
lower category either of them belongs to will be applied. Pay attention to the rating of
the instrument and test lead used together.
● Connect the cables that are required for the desired measurement only.
● Current sensor shall be connected to the secondary side of the circuit breaker since the
primary side has dangerous large current capacity.
● Brand and type of the batteries should be harmonized.
● Never mix new and old batteries.
● Install batteries in correct polarity as marked inside the battery compartment area.
LCD indication/ Battery level indicator
Status Details
Battery level
Blink
Battery level is full.
Indicator varies depending on the battery level.
replace the batteries with new ones immediately.
How to install batteries:
Follow the procedures below and insert batteries.
1 Disconnect all cables and set the function switch to OFF position.
2 Loosen one battery compartment cover-fixing screw and remove the cover.
3 Take out all the batteries.
4 Insert two new batteries, size AA alkaline: LR6, observing correct polarity.
5 Install the cover, and then secure it with the screw.
Battery compartment cover
- 13 - KEW 2062/2062BT
Screw
Size AA Alkaline battery: LR6
KEW 2062/2062BT 4.3 Test leads connection (to KEW 2062 / 2062BT)
measurement (while the instrument is energized).
or exposed metal parts.
● Connect to the instrument first, firmly into the corresponding terminal.
. With attention to the measurement category to which the object under test
primary side has dangerous large current capacity.
4.3 Test leads connection (to KEW 2062 / 2062BT)
The followings should be checked before the connection.
● Use only the test leads supplied with this instrument.
● Connect the cables that are required for the desired measurement only.
● First, connect the plug of the test lead to the instrument. Only then connect to the
measurement line.
● Never disconnect the test lead from the voltage input terminal of the instrument during a
DANGER
● Never attempt to make measurement if any abnormal conditions are noted, such as a crack
WARNING
● Confirm that the instrument is powered off, and then connect the test leads.
CAUTION
Connect the test leads per the following procedures.
1 Ensure that KEW 2062 / 2062BT is turned off.
2 Connect the test lead to AC voltage input terminal
on the instrument.*
* The number of test leads to be connected
depends on the wiring configuration.
4.4 Connection to the measured object
The following should be checked before the connection.
● This instrument is rated to 300 V AC for CAT IV, 600 V AC for CAT III, and 1000V AC for
CAT II
belongs, do not make measurements on a circuit in which voltage exceeds these values.
● Use only the test leads designed for this instrument.
● Always connect the test leads to the instrument first.
● When the instrument and the test lead are combined and used together, whichever
lower category either of them belongs to will be applied. Pay attention to the rating of
the instrument and test lead used together.
● Connect the cables that are required for the desired measurement only.
● Current sensor shall be connected to the secondary side of the circuit breaker since the
KEW 2062/2062BT - 14 -
DANGER
4.4 Connection to the measured object KEW 2062/2062BT
clearance and creepage distances.
● The declared measurement accuracy is guaranteed where the conductor to be measured
Arrow mark
KEW 2062/2062BT Chapter 5 Settings
KEW 2062/2062BT - 16 -
Chapter 5 Settings
Before starting a measurement, adjust the following settings.
* Wiring configuration, frequency of the voltage to be measured,
and VT/ CT ratio, if necessary.
Set the functin switch to “ ” to adjust settings.
Note
● Turning the function switch before confirming the altered settings clears all the changes
you made. Confirm the altered settings, and then turn the function switch.
Item selection (Switch the displayed items)
Press the item switching button [◄►] to toggle the displayed
items and confirm the desired item with the mo de button.
Alter the values of each item with the item switching button
[◄►], and then press the mode button again to confirm the
change. The display returns to the selection sc reen.
The followings are the default settings. System reset restores the altered changes to the default.
Wiring configuration VT ratio CT ratio
Frequency of nominal voltage Backlight
[◄►]
[◄►]
[◄►]
[◄►]
[◄►]
[◄►]
[◄►]
Item switching button [◄►]: toggles setting items
Mode button : confirms selection and change.
System reset
Buzzer
● Care should be taken so as not to short-circuit the power line with the metal ends of the
test lead at connection. In addition, do not touch the metal tips.
● The tips of the current sensor jaws are designed so as not to short-circuit the power line of
the object to be tested but be careful when measuring an un-insulated conductor.
● Keep your fingers behind the barrier during a measurement.
Barrier: provides protection against electrical shock and ensuring the minimum requi red
For accurate measurement:
is placed at the center of the current clamp sensor.
● Care should be taken so as not to pinch the conductors with the tips of the jaws.
● Confirm and harmonize the wiring configuration of the measurement line and KEW
2062 / KEW2062B T.
● When clamping onto a conductor, make the arrow mark point towards the load side;
otherwise, polarity of active power (P) will be reversed and displayed.
DANGER
● Never clamp two or more conductors.
- 15 - KEW 2062/2062BT
KEW 2062/2062BT Chapter 5 Settings
Note
you made. Confirm the altered settings, and then turn the function switch.
Chapter 5 Settings
● Turning the function switch before confirming the altered settings clears all the changes
Item selection (Switch the displayed items)
The followings are the default settings. System reset restores the altered changes to the default.
Wiring configuration VT ratio CT ratio
Wiring configuration VT ratio CT ratio
[◄►]
[◄►]
Before starting a measurement, adjust the following settings.
* Wiring configuration, frequency of the voltage to be measured,
and VT/ CT ratio, if necessary.
Set the functin switch to “ ” to adjust settings.
Press the item switching button [◄►] to toggle the displayed
items and confirm the desired item with the mo de button.
Alter the values of each item with the item switching button
[◄►], and then press the mode button again to confirm the
change. The display returns to the selection sc reen.
Item switching button [◄►]: toggles setting items
Mode button : confirms selection and change.
[◄►]
[◄►]
System reset
System reset
[◄►]
[◄►]
Buzzer
Buzzer
[◄►]
[◄►]
[◄►]
[◄►] [◄►]
[◄►]
[◄►]
Frequency of nominal voltage Backlight
KEW 2062/2062BT - 16 -
Frequency of nominal voltage Backlight
[◄►]
Wiring systems KEW 2062/2062BT
CAUTION
the LCD shows OL.
KEW 2062/2062BT Measurement using VT/ CT ratio
KEW 2062/2062BT - 18 -
A short press of item switching button [◄►] increases or decreases the value by 1. A long
press of the item switching button changes digit position (to right or left). When pressing the
button, while the last digit is blinking, not a digit position but a decimal point moves. A long
press of mode button while changing values or digit position cancels the changes a nd
restores the setting to 1.000.
Press the mode button to confirm the changes. The display returns to the selection screen.
Measurement using VT/ CT ratio
DANGER
● This instrument is rated to 300 V AC for CAT IV, 600 V AC for CAT III, and 1000V AC for
CAT II
. With attention to the measurement category to which the object under test
belongs, do not make measurements on a circuit in which the electrical potential exceeds
these values.
● Always clamp the secondary side of VT or CT (transformer).
● Do not open-circuit the secondary side of CT while it is energized; otherwise, dangerous
high voltage will be generated at the secondary side.
CAUTION
● When using a VT or CT, the declared meas urement accuracy is not guaranteed. If using
either or both of them, please take the accuracies of KEW 2062 / KEW2062BT, VT and CT, and als o
phase characteristics into consideration.
If voltage or current values of the measurement line exceed the max measuring rang e of
KEW 2062 / 2062BT, the primary side value of the line can be obtained by measuring the
secondary side using proper VT or CT for the specific line’s voltage or current. See the
diagram below.
Example:
Single-phase 2-wire (1P2W)
V V
N
L
Power
source
Load
VT
CT
i
Single-phase 2-wire Balance Three-phase 3-wire Unbalance Three-phase 3-wire
Wiring systems
Select “Wiring configuration” and press the mode button to adjust wiring configurations. Select
the appropriate one out of five wiring configurations according to the wiring system to be tested.
* For Single-phase 3-wire(1P3W), please select “1P2W” (Single-phase 2-wire) and perform
power measurement on each phase (L1/ L2) individually. KEW 2062 / 2062BT cannot
show the total power of 1P3W.
Item switching button [◄►]: toggle the available wiring configurations
Single-phase 2-wire Balance Three-phase 3-wire Unbalance Three-phase 3-wire
[◀▶]
[◀▶]
[◀▶] [◀▶]
[◀▶]
Unbalance Three-phase 4-wire Balance Three-phase 4-wire
Unbalance Three-phase 4-wire Balance Three-phase 4-wire
[
[
◀▶
◀▶
Press the mode button while the desired wiring configuration is displayed. The selection is
confirmed and the display returns to the selection screen.
VT/ CT ratio
● The display range, when setting VT or CT ratio, is between 0.000 and 9999 (RMS volta ge/
current) and between 0.000k and 9999k (power). Please take the display range into
consideration when setting VT or CT ratio. If setting extremely large or small VT or CT
ratio, the LCD may show 0 or OL and wouldn’t change.
● Allowable input is 1100 V to AC voltage terminal and 1100 A to current sensor, regardless
of selected VT or CT ratio. If output of the connected VT or CT exceeds these values,
While the LCD is showing VT or CT ratio, press the mode button. Then 4-digit value is displayed
and the changeable digit starts blinking. Selectable range is between 0.001 and 9999.
The digit selected to be changed will blink.
[◀▶]
[◀▶]
[◀▶]
]
]
This setting is required if the system to be
tested has external VT(s) or CT(s). The set
VT/ CT ratio will be reflected to all the values
measured during any measurements related
to voltage and current.
- 17 - KEW 2062/2062BT
KEW 2062/2062BT Measurement using VT/ CT ratio
. With attention to the measurement category to which the object under test
phase characteristics into consideration.
A short press of item switching button [◄►] increases or decreases the value by 1. A long
press of the item switching button changes digit position (to right or left). When pressing the
button, while the last digit is blinking, not a digit position but a decimal point moves. A long
press of mode button while changing values or digit position cancels the changes a nd
restores the setting to 1.000.
Press the mode button to confirm the changes. The display returns to the selection screen.
Measurement using VT/ CT ratio
Power
Power
source
source
DANGER
CAUTION
L
L
N
N
VT
VT
V V
V V
Load
Load
CT
CT
i
i
● This instrument is rated to 300 V AC for CAT IV, 600 V AC for CAT III, and 1000V AC for
CAT II
belongs, do not make measurements on a circuit in which the electrical potential exceeds
these values.
● Always clamp the secondary side of VT or CT (transformer).
● Do not open-circuit the secondary side of CT while it is energized; otherwise, dangerous
high voltage will be generated at the secondary side.
● When using a VT or CT, the declared meas urement accuracy is not guaranteed. If using
either or both of them, please take the accuracies of KEW 2062 / KEW2062BT, VT and CT, and als o
If voltage or current values of the measurement line exceed the max measuring rang e of
KEW 2062 / 2062BT, the primary side value of the line can be obtained by measuring the
secondary side using proper VT or CT for the specific line’s voltage or current. See the
diagram below.
Example:
Single-phase 2-wire (1P2W)
KEW 2062/2062BT - 18 -
Buzzer ON/ OFF KEW 2062/2062BT
KEW 2062/2062BT Measurement using VT/ CT ratio
KEW 2062/2062BT - 20 -
Frequency of nominal voltage
Set the power frequency of the object to be measured.
Note
● Harmonics are calculated based on the preset frequencies. For accurate measure-
ment, please check and set the same frequency as the power frequency of the
object to be tested.
Select “Frequency of nominal voltage” and press the mode button. Then “.50[Hz]”/ “.60[Hz]”
starts blinking; that means it is ready to change the setting.
Item switching button [◄►]: Switches the frequencies.
Press the mode button to confirm the changes. The display returns to the selection screen.
The set nominal frequency is displayed as left figure at harmonics
function.
System reset
Restore all the settings to default*. *See P.16 Item selection part.
Select “System reset” and press the mode button. Then “n: Cancel”
starts blinking; that means it is ready to change the setting.
Item switching button [◄►]:
.n: Cancel .y: Performs system reset.
Select “.y” and press the mode button. Then system reset will be done and the display
returns to the selection screen. To cancel or do not want to do system reset, select “.n” and
press the mode button.
[◄►]
[◀▶]
Buzzer ON/ OFF
Keypad sounds, and phase detection buzzer can be muted. This setting doesn’t affect the
low battery warning buzzer and the buzzer indicating auto-power-off is activated.
Select “Buzzer” and press the mode button. Then “ON(on)”/ “OFF(oF) starts blinking. Now
it is ready to change the setting.
Item switching button [◄►]:
on: Buzzer sounds oF: No buzzer sounds
[◄►]
Press the mode button to confirm the changes. The display returns to the selection screen.
Backlight ON/ OFF
This setting is to enable or disable auto-backlight-off function if there’re no key operations
for the specified time.
Select “Backlight” and press the mode button. Then “ON(on)”/ “OFF(oF) starts blinking and
now it is ready to change the setting.
Item switching button [◄►]:
on: Turns off in 5 min. oF: Disables auto-off function.
Press the mode button to confirm the changes. The display returns to the selection screen.
[◄►]
[◀▶]
[◀▶]
- 19 - KEW 2062/2062BT
KEW 2062/2062BT Measurement using VT/ CT ratio
Note
object to be tested.
Frequency of nominal voltage
Set the power frequency of the object to be measured.
● Harmonics are calculated based on the preset frequencies. For accurate measurement, please check and set the same frequency as the power frequency of the
Select “Frequency of nominal voltage” and press the mode button. Then “.50[Hz]”/ “.60[Hz]”
starts blinking; that means it is ready to change the setting.
Item switching button [◄►]: Switches the frequencies.
[◄►]
[◄►]
Press the mode button to confirm the changes. The display returns to the selection screen.
The set nominal frequency is displayed as left figure at harmonics
function.
System reset
Item switching button [◄►]:
.n: Cancel .y: Performs system reset.
Select “.y” and press the mode button. Then system reset will be done and the display
returns to the selection screen. To cancel or do not want to do system reset, select “.n” and
press the mode button.
KEW 2062/2062BT - 20 -
Restore all the settings to default*. *See P.16 Item selection part.
Select “System reset” and press the mode button. Then “n: Cancel”
starts blinking; that means it is ready to change the setting.
[◀▶]
[◀▶]
6.1 RMS/ Frequency measurement KEW 2062/2062BT
Mode
Mode
KEW 2062/2062BT RMS voltage, frequency
KEW 2062/2062BT - 22 -
Note
● When current is measuring current in PEAK mode, opening and closing operation of the
current sensor affects the readings. To obtain accurate readings, check the readings
while clamping onto the conductor to be tested or turn on the data hold function before
unclamping the conductor.
● In the PEAK mode, sampling is performed in one cycle and PEAK value (crest value) is
determined based on the result. The sampling is performed just once in 0.5s, therefore,
the Test er cannot measure a sudden input signal such as inrush current.
RMS voltage, frequency
Set the function switch to “ “.
A shot press of Mode button: switches display modes
between Inst, MAX, MIN, AVG, and |PEAK|.
* Each of above values is determined after pressing the mode
button and measurement get started.
A long press of Mode button: clears measured values (MAX, MIN, AVG
, and
|PEAK|).
Instantaneous value MAX (Max. value) MIN (Min. value)
|PEAK| (Peak value) AVG (Average value)
Note
● In the PEAK mode, sampling is performed in one cycle and PEAK value (crest value) is
determined based on the result. The sampling is performed just once in 0.5s, therefore,
the Test er cannot measure a sudden input signal such as inrush current.
Mode
button
Mode
button
Mode button
Mode button
Mode
button
Mode
Mode
Chapter 6 Display items by measurement function
6.1 RMS/ Frequency measurement
While viewing “Waveform” on your Smartphone or tablet device using our
app via Bluetooth, KEW 2062BT’s LCD will be like the illustration shown
to the right and won’t show the measured values.
To check the measured values on the instrument, switch the item on your
Bluetooth device using the app from “Waveform” to “Measured value”, or
disconnect Bluetooth communication.
RMS current, frequency
Set the function switch to “ “.
Auto-ranging function activates and switches the current range
depending on the measured value.
A short press of Mode button: switches display modes between
Inst, MAX, MIN, AVG, and |PEAK|.
* Each of above values is determined after pressing the mode
button and measurements get started.
A long press of Mode button: clears measured values (MAX, MIN, AVG , and |PEAK|).
Instantaneous value MAX (Max. value) MIN (Min. value)
Instantaneous value MAX (Max. value) MIN (Min. value)
Mode button
Mode button
Range is fixed while the LCD is showing MAX, MIN, AVG, or |PEAK|. The auto-ranging function
is reactivated when switching the display to instantaneous value.
button
button
|PEAK| (Peak value) AVG (Average value)
|PEAK| (Peak value) AVG (Average value)
Mode
Mode
button
button
- 21 - KEW 2062/2062BT
button
button
Mode button
Mode button
KEW 2062/2062BT RMS voltage, frequency
Note
current sensor affects the readings. To obtain accurate readings, check the readings
the Test er cannot measure a sudden input signal such as inrush current.
Note
the Test er cannot measure a sudden input signal such as inrush current.
Mode
Mode
Mode
Mode
● When current is measuring current in PEAK mode, opening and closing operation of the
while clamping onto the conductor to be tested or turn on the data hold function before
unclamping the conductor.
● In the PEAK mode, sampling is performed in one cycle and PEAK value (crest value) is
determined based on the result. The sampling is performed just once in 0.5s, therefore,
RMS voltage, frequency
Set the function switch to “ “.
A shot press of Mode button: switches display modes
between Inst, MAX, MIN, AVG, and |PEAK|.
* Each of above values is determined after pressing the mode
button and measurement get started.
A long press of Mode button: clears measured values (MAX, MIN, AVG
Instantaneous value MAX (Max. value) MIN (Min. value)
Instantaneous value MAX (Max. value) MIN (Min. value)
button
button
Mode button Mode button
Mode button
|PEAK| (Peak value) AVG (Average value)
|PEAK| (Peak value) AVG (Average value)
Mode
Mode
button
button
● In the PEAK mode, sampling is performed in one cycle and PEAK value (crest value) is
determined based on the result. The sampling is performed just once in 0.5s, therefore,
KEW 2062/2062BT - 22 -
button
button
, and
Mode button
|PEAK|).
6.2 Single/ Three-phase (balance) Power measurement KEW 2062/2062BT
Note
connection). To measure such a system, please test phases individually.
KEW 2062/2062BT Connection diagram for balance Three-phase 3-wire (3P3W)
KEW 2062/2062BT - 24 -
Connection diagram for balance Three-phase 3-wire (3P3W)
Connection diagram for balance Three -phase 4-wire (3P4W)
6.2 Single/ Three-phase (balance) Power measurement
● KEW 2062 / 2062BT cannot measure Three-phase 4-wire with different capacitors (V/ ∆-
Connection diagram for Single-phase 2-wire (1P2W)
Set the function switch to “ ”.
Select wiring system in the selection screen.
Single-phase 2-wire (1P2W) Three-phas e 3-wire (3P3W) Three-phase 4-wire (3P4W)
Balance
Balance
Connection diagram for Single-phase 3-wire (1P3W)
To measure Single-phase 3-wire (1P3W), select “1P2W” and measure power of L1 and L2
separatel y. KEW 2062 / 2062BT cannot show the total power of 1P3W.
- 23 - KEW 2062/2062BT
KEW 2062/2062BT Connection diagram for balance Three-phase 3-wire (3P3W)
Connection diagram for balance Three-phase 3-wire (3P3W)
Connection diagram for balance Three -phase 4-wire (3P4W)
KEW 2062/2062BT - 24 -
Switching display KEW 2062/2062BT
Mode
KEW 2062/2062BT 6.3 Three-phase (unbalance) power measurement
KEW 2062/2062BT - 26 -
6.3 Three-phase (unbalance) power measurement
Note
● KEW 2062 / 2062BT cannot measure Three-phase 4-wire with different capacitors (V/ ∆-
connection). To measure such a system, please test phases individually.
Set the function switch to “ ”
.
Select wiring system in the selection screen.
Three-phase 3-wire (3P3W) Three-phase 4-wire (3P4W)
Unbalance
Unbalance
Three-phase 3-wire (3P3W) unbalance
Measurement procedures
Clamp onto R(L1) phase
Clamp onto T(L3) phase
Result display [◄►]
[▶]
[▶]
Mode button
Mode button
[
▶
]
[
▶
]
Mode
Switching display
Item switching button [◄►]:
Short press: switches measured values to be displayed in the LCD.
Active power, power factor/ Active power, voltage-current phase difference/ Active, apparent
powers/ Active, reactive powers/ RMS current, voltage values
Active power, power factor Active power, voltage-current Active, apparent powers
phase difference
[◀▶]
[◀▶] [◀▶]
[◀▶] [◀▶]
[◀▶] [◀▶]
RMS current, voltage values Active, reactive powers
RMS current, voltage values Active, reactive powers
Mode button
Short press: switches display modes between Inst, MAX, MIN, and AVG.
* Each of above values is determined after pressing the mode
Long press: clears measured values (MAX, MIN, and AVG )
Example: Active power, power factor* screen
* Measured values displayed in the upper and lower rows are switched together.
Range is fixed while the LCD is showing MAX, MIN, or AVG. The auto-ranging function is
reactivated when switching the display to instantaneous value.
Instantaneous value MAX (maximum value)
Instantaneous value MAX (maximum value)
Mode button
Mode button Mode button
AVG (average value) MIN (minimum value)
AVG (average value) MIN (minimum value)
[◀▶]
[◀▶]
button and measurements get started.
button
button
Mode
Mode
button
button
- 25 - KEW 2062/2062BT
[◀▶]
Mode button
KEW 2062/2062BT 6.3 Three-phase (unbalance) power measurement
Note
connection). To measure such a system, please test phases individually.
]
]
]
]
6.3 Three-phase (unbalance) power measurement
● KEW 2062 / 2062BT cannot measure Three-phase 4-wire with different capacitors (V/ ∆-
Set the function switch to “ ”
Select wiring system in the selection screen.
Three-phase 3-wire (3P3W) Three-phase 4-wire (3P4W)
Unbalance
.
Unbalance
Three-phase 3-wire (3P3W) unbalance
Measurement procedures
Clamp onto R(L1) phase
[▶]
[▶] [▶]
Clamp onto T(L3) phase
[▶]
Result display [◄►]
[
Mode button
Mode button Mode button
KEW 2062/2062BT - 26 -
▶
[
▶
Mode button
[
▶
[
▶
Three-phase 3-wire (3P3W) unbalance KEW 2062/2062BT
Mode
Press the item switching button [►]
after making connection, the LCD
Pressing mode button switches the
phase.
Mode
KEW 2062/2062BT Three-phase 3-wire (3P3W) unbalance
KEW 2062/2062BT - 28 -
Result display
Item switching button [◄►]:
Short press: switches measured values to be displayed in the LCD.
Total active power Active power of R(L1) Active power of T (L2)
A long press of mode button clears measured res ults and the screen returns to the initial
screen.
[◀▶]
[◀▶]
[◀▶]
Mode
Mode
Clamp onto R(L1) phase
While the LCD is showing the settings for the first measurement, make connection as the
following figure shows.
shows active power of R(L1) phase.
indication between active power and
RMS voltage/ current values of R(L1)
Another press of item switching button [►] changes measurement object from R(L1) to T(L3).
Clamp onto T(L3) phase
While the LCD is showing the 2nd time measurement
screen, switch the current sensor position as shown
to the right; just the sensor only, do not unclip or change
the position of test leads.
button
button
Press the item switching button [►] after making connection, the LCD shows active power
of T(L3) phase. Pressing mode button switches the indications between active power and
RMS voltage/ current values of T(L3) phase.
button
button
Another press of item switching button [►] switches the screens to measurement result.
- 27 - KEW 2062/2062BT
KEW 2062/2062BT Three-phase 3-wire (3P3W) unbalance
Total active pow er Active power of R(L1) Active power of T (L2)
Result display
Item switching button [◄►]:
Short press: switches measured values to be displayed in the LCD.
Total active power Active power of R(L1) Active power of T (L2)
[◀▶] [◀▶]
[◀▶]
[◀▶]
A long press of mode button clears measured res ults and the screen returns to the initial
screen.
[◀▶]
[◀▶]
KEW 2062/2062BT - 28 -
Three-phase 4-wire (3P4W) unbalance KEW 2062/2062BT
KEW 2062/2062BT Three-phase 4-wire (3P4W) unbalance
KEW 2062/2062BT - 30 -
Clamp onto R(L1) phase
While the LCD is showing the 1st time measurement screen, make connection as the
following figure shows.
Press the item switching button [►] after making connection, the LCD shows active power
of R(L1) phase. Pressing mode button switches the indication between active power of
R(L1) phase and RMS voltage/ current values.
Another press of item switching button [►] changes measurement object from R(L1) to S(L2).
Clamp onto S(L2) phase
While the LCD is showing the settings for 2nd measurement, make connection as the
following figure shows: move the current sensor and red test lead to S (L2) phase.
Press the item switching button [►] after making
connection, the LCD shows active power of S(L2)
phase. Pressing mode button switches the
indication between active power of S(L2) phase
and RMS voltage/ current values.
Another press of item switching button [►] changes measurement object from S(L2) to T(L3).
Mode
button
Mode
button
Clamp onto R(L1) phase Clamp onto S(L2) phase Clamp onto T(L3) phase
Three-phase 4-wire (3P4W) unbalance
Measurement procedures
Clamp onto R(L1) phase
[▶] [▶] [▶]
[▶]
Mode button Mode button Mode button
Mode button
Clamp onto S(L2) phase
[▶]
[▶] [▶]
[▶] [▶]
Mode button
Clamp onto T(L3) phase
Mode button
[▶]
[▶]
[▶]
Result display
[◀▶]
[◀▶]
- 29 - KEW 2062/2062BT
Result display
KEW 2062/2062BT Three-phase 4-wire (3P4W) unbalance
Mode
Mode
Clamp onto R(L1) phase
While the LCD is showing the 1st time measurement screen, make connection as the
following figure shows.
Press the item switching button [►] after making connection, the LCD shows active power
of R(L1) phase. Pressing mode button switches the indication between active power of
R(L1) phase and RMS voltage/ current values.
Another press of item switching button [►] changes measurement object from R(L1) to S(L2).
Clamp onto S(L2) phase
While the LCD is showing the settings for 2nd measurement, make connection as the
following figure shows: move the current sensor and red test lead to S (L2) phase.
Press the item switching button [►] after making
connection, the LCD shows active power of S(L2)
phase. Pressing mode button switches the
indication between active power of S(L2) phase
and RMS voltage/ current values.
button
button
Mode
Mode
button
button
Another press of item switching button [►] changes measurement object from S(L2) to T(L3).
KEW 2062/2062BT - 30 -
Three-phase 4-wire (3P4W) unbalance KEW 2062/2062BT
Mode
]
KEW 2062/2062BT 6.4 Harmonics measurement
KEW 2062/2062BT - 32 -
6.4 Harmonics measurement
Set the function switch to
” ”.
The nominal frequency is displayed as
right figure at harmonics function. Nominal
frequency can be set to 50Hz or 60Hz on
SET UP function. (See P.19 “Frequency of
nominal voltage”.)
The LCD screen will be as the right figure
shows during Bluetooth communication:
no measured values are displayed. The
measured values can be checked by using
the application on your smartphone or
tablet device, or by disconnecting the Bluetooth.
Current harmonics distortion factor, content rate, RMS value
Current measurement ranges switches automaticay deoending on the measured value.
When the unit shown in the LCD is “V”, it means the
screen is “voltage harmonics measurement screen”. Hold
down (long press) the Item switching button [►] to switch
the unit to “A”.
[ Item switching button [◄►] ]
A short press toggles the displayed measured values:
RMS/ Harmonics distortion factor THD-F, RMS/ Harmonics distortion factor THD-R,
1st fundamental wave RMS/ content rate to 30th harmonics RMS/ content rate
RMS/ Harmonics distortion factor THD-F RMS/ Harmonics distortion factor THD-R
30th harmonics RMS/ content rate to 1st fundamental wave RMS/ content rate
～
The upper row shows the order of the harmonics (1h to 30h) and RMS of each harmonics :
these two switches every second.
Long
press
[◀▶]
[◀▶] [◀▶]
[
◀▶
]
[▶]
Mode
]
Clamp onto T(L3) phase
While the LCD is showing the 3rd time measurement
screen, move the current sensor and red test lead
to T(L3) as shown to the right.
Press the item switching button [►] after making
connection, the LCD shows active power of T(L3)
phase. Pressing mode button switches the
indication to RMS voltage/ current values of T(L3)
phase.
Another press of item switching button [►] switches the screens to measurement result.
Result display
Item switching button [◄►]:
Short press: switches measured values to be displayed in the LCD.
Active power/ Power factor Active, Apparent power Active, Reactive power
Active power/ Power factor Active, Apparent power Active, Reactive power
A long press of mode button clears measured res ults and the screen returns to the initial
measurement setting screen.
[◀▶] [
[◀▶]
Active power of T(L3) Active power of S(L2) Active power of R(L1)
Active power of T(L3) Active power of S(L2) Active power of R(L1)
button
button
[◀▶] [◀▶]
[◀▶]
[◀▶] [◀▶]
[◀▶]
[◀▶]
[
[◀▶]
- 31 - KEW 2062/2062BT
◀▶
◀▶
KEW 2062/2062BT 6.4 Harmonics measurement
6.4 Harmonics measurement
Set the function switch to
The nominal frequency is displayed as
right figure at harmonics function. Nominal
frequency can be set to 50Hz or 60Hz on
SET UP function. (See P.19 “Frequency of
nominal voltage”.)
The LCD screen will be as the right figure
shows during Bluetooth communication:
no measured values are displayed. The
measured values can be checked by using
the application on your smartphone or
tablet device, or by disconnecting the Bluetooth.
” ”.
Current harmonics distortion factor, content rate, RMS value
Current measurement ranges switches automaticay deoending on the measured value.
When the unit shown in the LCD is “V”, it means the
screen is “voltage harmonics measurement screen”. Hold
down (long press) the Item switching button [►] to switch
the unit to “A”.
[ Item switching button [◄►] ]
A short press toggles the displayed measured values:
RMS/ Harmonics distortion factor THD-F, RMS/ Harmonics distortion factor THD-R,
1st fundamental wave RMS/ content rate to 30th harmonics RMS/ content rate
RMS/ Harmonics distortion factor THD-F RMS/ Harmonics distortion factor THD-R
RMS/ Harmonics distortion factor THD-F RMS/ Harmonics distortion factor THD-R
[◀▶]
[◀▶]
[◀▶] [◀▶]
[◀▶] [◀▶]
30th harmonics RMS/ content rate to 1st fundamental wave RMS/ content rate
30th harmonics RMS/ content rate to 1st fundamental wave RMS/ content rate
[◀▶]
[◀▶]
～
～
[▶]
[▶]
Long
Long
press
press
The upper row shows the order of the harmonics (1h to 30h) and RMS of each harmonics :
these two switches every second.
KEW 2062/2062BT - 32 -
Voltage harmonics distortion factor, content rate, RMS value KEW 2062/2062BT
Mode
KEW 2062/2062BT Voltage harmonics distortion factor, content rate, RMS value
KEW 2062/2062BT - 34 -
[ Item switching button [◄►] ]
A short press toggles the displayed measured values:
RMS/ Harmonics distortion factor THD-F, RMS/ Harmonics distortion factor THD-R,
Fundamental wave RMS/ content rate to 30th harmonics RMS/ content rate
RMS/ Harmonics distortion factor THD-F RMS/ Harmonics distortion factor THD-R
30th harmonics RMS/ content rate to Fundamental wave RMS/ content rate
～
The upper row shows the order of the harmonics (1h to 30h) and RMS of each harmonics :
these two switches every second.
[ Mode button ]
A short press switches display mode between Inst, MAX, MIN, and AVG.
Each of above values is determined after pressing the mode button and measurements
get started.
A long press of the button clears measured values (MAX, MIN, and AVG).
Example: Display screen of RMS/ Harmonics distortion factor THD-F*
* Measured values displayed in the upper and lower rows switch simultaneously
in every screen.
Instantaneous value MAX (Maximum value)
AVG (Average value) MIN (Minimum value)
[
◀▶
]
[◀▶] [◀▶]
[
◀▶
]
Mode
button
Mode button
Mode button
Mode
button
Mode
[ Mode button ]
A short press switches display mode between Inst, MAX, MIN, and AVG.
Each of above values is determined after pressing the mode button and measurements
get started.
A long press of the button clears measured values (MAX, MIN, and AVG).
Example: Display screen of RMS/ Harmonics distortion factor THD-F*
* Measured values displayed in the upper and lower rows switch simultaneously
Voltage harmonics distortion factor, content rate, RMS value
in every screen.
Instantaneous value MAX (Maximum value)
Instantaneous value MAX (Maximum value)
Mode button Mode button
Mode button
AVG (Average value) MIN (Minimum value)
AVG (Average value) MIN (Minimum value)
Range is fixed while the LCD is showing MAX, MIN, or AVG. The auto-ranging function is
reactivated when switching the display to instantaneous value.
button
button
Mode button
Mode
Mode
button
button
When the unit shown in the LCD is “A”, it means the
screen is “current harmonics measurement screen”. Hold
down (long press) the Item switching button [►] to switch
the unit to “V”.
- 33 - KEW 2062/2062BT
[►]
[►]
Long
Long
press
press
KEW 2062/2062BT Voltage harmonics distortion factor, content rate, RMS value
Mode
Mode
[ Item switching button [◄►] ]
A short press toggles the displayed measured values:
RMS/ Harmonics distortion factor THD-F, RMS/ Harmonics distortion factor THD-R,
Fundamental wave RMS/ content rate to 30th harmonics RMS/ content rate
RMS/ Harmonics distortion factor THD-F RMS/ Harmonics distortion factor THD-R
RMS/ Harmonics distortion factor THD-F RMS/ Harmonics distortion factor THD-R
[◀▶]
[◀▶]
[◀▶] [◀▶]
[◀▶] [◀▶]
30th harmonics RMS/ content rate to Fundamental wave RMS/ content rate
30th harmonics RMS/ content rate to Fundamental wave RMS/ content rate
[◀▶]
[◀▶]
～
～
The upper row shows the order of the harmonics (1h to 30h) and RMS of each harmonics :
these two switches every second.
[ Mode button ]
A short press switches display mode between Inst, MAX, MIN, and AVG.
Each of above values is determined after pressing the mode button and measurements
get started.
A long press of the button clears measured values (MAX, MIN, and AVG).
Example: Display screen of RMS/ Harmonics distortion factor THD-F*
* Measured values displayed in the upper and lower rows switch simultaneously
in every screen.
Instantaneous value MAX (Maximum value)
Instantaneous value MAX (Maximum value)
button
button
Mode button
Mode button Mode button
KEW 2062/2062BT - 34 -
AVG (Average value) MIN (Minimum value)
AVG (Average value) MIN (Minimum value)
Mode
Mode
button
button
Mode button
Harmonics distortion factor THD-R/ THD-F KEW 2062/2062BT
KEW 2062/2062BT 6.5 Phase detection
KEW 2062/2062BT - 36 -
6.5 Phase detection
Note
● KEW 2062 / 2062BT cannot measure Three-phase 4-wire with different capacitors (V/ ∆-
connection).
● When setting the buzzer to “OFF”, buzzer doesn’t sound at the end of detection process.
If buzzer indication is required for phase detection judgement, set the buzzer to “ON”.
Set the function switch to “
“.
According to the wiring system of Three-phase 3-wire and Thr ee-phase 4-wire to be tested,
the results are displayed as the following table shows. Each number represents the
connected phase order.
Wiring system
Judgement
R(L1)
S(L2)
T(L3)
Indication
Buzzer
Positive phase
Live
Live/
Earth
Live
1.2.3
Discontinuous:
Pi, Pi, Pi
Negative phase 3.2.1
Continuous:
Piii
Unjudgeable
Missing phase,
abnormal frequency,
out of voltage effective
input range, unbalance
-.-.- Not sound.
Harmonics distortion factor THD-R/ THD-F
There are two typical definitions used when dealing with Total Harmonic Distortion (THD).
The two types of Total Harmonic Distortion are THD-F and THD-R. THD-F uses
fundamental wave forms and THD-R uses total RMS values as a reference.
THD-F
THD-R
They both are figures of merit used to quantify harmonic levels in voltage and current
waveforms; however, the THD-R measurement can be prone to misinterpretation which
can easily lead to measurement errors when measuring larger distortions. That is , at low
distortion levels, the difference between the two calculation methods - THD-F and THD- R
- is negligible but at large distortion levels, THD-F can get more accurate results.
With the former measuring devices, accurate measurement of RMS fundamental wave
(first order only), which is required for THD-F calculation had been difficult; therefore,
THD-R has been commonly used. Although, recent devices can measure it accurately. So
now in practice, THD-R is used for simple measurements and the distortion factor of
THD-F, l e ss susceptive to harmonics content rate against spec ified measurement
accuracy, is commonly used.
Where inves tigating what causes harmonics on load side, THD-R measurement if often
used, and for power quality control purpose, the THD-F is mainly used.
RMS harmonics (2nd to…)
=
[%]
Fundamental RMS value(1st)
RMS harmonics (2nd to…)
=
[%]
Fundamental RMS value+ RMS harmonics
×100
×100
- 35 - KEW 2062/2062BT
KEW 2062/2062BT 6.5 Phase detection
Note
If buzzer indication is required for phase detection judgement, set the buzzer to “ON”.
Judgement
R(L1)
S(L2)
T(L3)
Indication
Buzzer
Discontinuous:
Pi, Pi, Pi
Continuous:
Piii
Missing phase,
input range, unbalance
6.5 Phase detection
● KEW 2062 / 2062BT cannot measure Three-phase 4-wire with different capacitors (V/ ∆connection).
● When setting the buzzer to “OFF”, buzzer doesn’t sound at the end of detection process.
Set the function switch to “
According to the wiring system of Three-phase 3-wire and Thr ee-phase 4-wire to be tested,
the results are displayed as the following table shows. Each number represents the
connected phase order.
Wiring system
Positive phase
Negative phase 3.2.1
Unjudgeable
KEW 2062/2062BT - 36 -
Live/
Live
Earth
abnormal frequency,
out of voltage effective
Live
“.
1.2.3
-.-.- Not sound.
Chapter 7 Other functions KEW 2062/2062BT
Note
function might activate and turn off the instrument.
KEW 2062/2062BT Chapter 8 Bluetooth communication
KEW 2062/2062BT - 38 -
Chapter 8 Bluetooth communication
WARNING
● Radio waves at Bluetooth communication may affect the operations of medical electronic
devices. Special care should be taken when using Bluetooth connect ion in the areas where
such devices are present.
Note
● Using the instrument or tablet devices near wireless LAN devices (IEEE802.11.b/ g) may
cause radio interferences, lowering of communication speed, resulting in significant time lag
in the display update rate between the instrument and tablet device. In this case, keep the
instrument and the tablet device away from the wireless LAN devices, or turn off the wireless
LAN devices or shorten the distance between the instr ument and the tablet device.
● It may be difficult to establish communication connection if either the instrument or tablet
device is in a metal box. In such a case, change the measurement location or remove the
metal obstacle between the instrument and the tablet devic e.
● If any leaking of data or information occurs while making a communication using Bluetooth
function, we assume no responsibility for any released co ntent.
● Some tablet devices, even if the application runs properly, may fail to establish communi-
cation with the instrument. Please use another tablet device and try to communicate with.
If you still cannot confirm the connection, there may be some problem with the instrument
unit. Please contact your local KYORITSU distributor.
● The Bluetooth word mark and logos are owned by Bluetooth SIG, Inc. and we, KYORITSU,
are licensed by them for use.
● Android, Google Play Store, and Google Map are the trademark or registered trademark of
Google Inc.
● iOS is the trademark or registered trademark of Cisco.
● Apple Store is the service mark of Apple Inc.
● In this manual, the “TM” and “ ® ” marks are omitted.
KEW 2062BT has a Bluetooth communication function a nd can exchange data with Android/
iOS tablet devices. Using the special applicatio n “KEW Power*(asterisk)” enables remote
monitoring/ checking data.
First, download the a pplication “KEW Power*(asterisk)” via the internet. Some functions are
available only while connected to the internet. For further detail, please refer to “8.1. KEW
Power* (asterisk) features”.
Bluetooth
Tablet device or
Smartphone
Chapter 7 Other functions
[Data hold function]
The LCD shows “ ” in the upper left corner by pressing data hold button and hold the currently
displayed reading. In this state, the instrument is perf orming measurements; however, the
reading isn’t updated. Press the Data hold button again to exit from the data hold mode, then
treading update resumes and the “ ” disappears.
By switching the measurement function, data hold is disabled, and measurement starts on the
selected function.
[Auto-backlight-off]
Backlight turns off automatically when 5 min. pass after the last key operation. To turn it on
again, hold down (long press) the Item switching button [◄]. Then the lighting time will be
extended 5 min. A long press of It em switching button [◄], while the light is on, turns off the light.
When setting the backlight to OFF, written in page 19, the auto-off function is disabled. In this
state, backlight doesn’t turn off when 5 min pass. To turn off the light, in this case, hold down
the Item switching button [◄].
[Auto-power-off]
● If the instrument is off with the function switch set to a measurement position, auto-power-off
Except for Bluetooth communication, the instrume nt turns off automatically when 15 min. pass
after the last key operation; discontinuous buzzer sounds 4 times. To turn on the instrument again,
set the function switch to OFF and then set it to the desired measurement position.
[Auto-ranging – current]
Current range switches automatically according to the measured rms currents.
A range shifts to one upper range when the input exceeds 110% or 300% peak (absolute
value) of the currently selected range and shifts to one lower range when the input drops 90% rms.
While “MAX”, “MIN”, “AVG”, and “|PEAK| (peak value)” has been selected in the display mode,
auto-ranging doesn’t work: the selected range is fixed and used.
- 37 - KEW 2062/2062BT
KEW 2062/2062BT Chapter 8 Bluetooth communication
such devices are present.
Note
Bluetooth
Tablet device or
Chapter 8 Bluetooth communication
● Radio waves at Bluetooth communication may affect the operations of medical electronic
devices. Special care should be taken when using Bluetooth connect ion in the areas where
● Using the instrument or tablet devices near wireless LAN devices (IEEE802.11.b/ g) may
cause radio interferences, lowering of communication speed, resulting in significant time lag
in the display update rate between the instrument and tablet device. In this case, keep the
instrument and the tablet device away from the wireless LAN devices, or turn off the wireless
LAN devices or shorten the distance between the instr ument and the tablet device.
● It may be difficult to establish communication connection if either the instrument or tablet
device is in a metal box. In such a case, change the measurement location or remove the
metal obstacle between the instrument and the tablet devic e.
● If any leaking of data or information occurs while making a communication using Bluetooth
function, we assume no responsibility for any released co ntent.
● Some tablet devices, even if the application runs properly, may fail to establish communication with the instrument. Please use another tablet device and try to communicate with.
If you still cannot confirm the connection, there may be some problem with the instrument
unit. Please contact your local KYORITSU distributor.
● The Bluetooth word mark and logos are owned by Bluetooth SIG, Inc. and we, KYORITSU,
are licensed by them for use.
● Android, Google Play Store, and Google Map are the trademark or registered trademark of
Google Inc.
● iOS is the trademark or registered trademark of Cisco.
● Apple Store is the service mark of Apple Inc.
● In this manual, the “TM” and “ ® ” marks are omitted.
KEW 2062BT has a Bluetooth communication function a nd can exchange data with Android/
iOS tablet devices. Using the special applicatio n “KEW Power*(asterisk)” enables remote
monitoring/ checking data.
First, download the a pplication “KEW Power*(asterisk)” via the internet. Some functions are
available only while connected to the internet. For further detail, please refer to “8.1. KEW
Power* (asterisk) features”.
KEW 2062/2062BT - 38 -
WARNING
Smartphone
8.1 KEW Power*(asterisk) features KEW 2062/2062BT
KEW 2062/2062BT Chapter. 9 Specifications
KEW 2062/2062BT - 40 -
Chapter. 9 Specifications
9.1 Safety specifications
Location for use : Altitude 2000 m or less, in-door use
Accuracy guaranteed
Temp. & Hum. range : 23°C±5°C, Relative humidity 85% or less (no condensation)
Operating Temp. &: : -10°C to +50°C, 85 % or less (no condensation)
humidity range
Storage Temp. & : -20°C to +60°C, 85 % or less (no condensation)
humidity range
Withstand voltage : 5160 V AC/ 5 sec.
(between current sensor and enclosure or electrical circuit and enclosure)
Insulation : 50 MΩ or more/ 1000 V (between electrical circuit and enclosure)
resistance
Applicable standards : ● IEC 61010-1, -2-032 (main unit)/ -031 (test leads)
Measurement CAT IV 300 V/ CAT III 600 V/ CAT II 1000V
Pollution degree 2,
● IEC 61326(EMC) Class B, EN50581 (RoHS),
● EN 301 489-1, EN 300 328, EN 62479, and
● IEC 60529 IP40
9.2. General specifications
Readings update rate : Approx. 0.5 sec . on , , , and functions, Approx. 1.0 sec.
on function
Max. conductor size : ø55 mm (max)
Dimension : 247(L) × 105(W) × 49(D) mm
Weight : Approx. 490g (including batteries)
Accessories : Test lead MODEL 7290 / alligator clip (red, black, yellow,) .......... 1 set
Instruction manual ....................................................................... 1 pce.
Alkaline size AA battery (LR6) ..................................................... 2 pcs.
Soft case MODEL9198 ............................................................... 1 pce.
Continuous operating : Approx. 58 hours
time ( function, continuous measurement, no load, backlight off, using
alkaline size AA (LR6) batteries)
Current consumption : 35 mA typ. (@3.0 V, function)
Communication : Bluetooth® Ver5.0 (KEW2062BT only)
8.1 KEW Power*(asterisk) features
KEW Power*(asterisk) for KEW 2062BT
The special application “KEW Power*” is available on download site for free. (An Internet
access is required: Android tablets, via Google Play St ore and iOS devices, via App Store).
Please note that communication charge is incurred separ ately for downloading applications
and using special features of them. For your information, “KEW Power*” is provided on-line
on ly.
Main features of KEW Power*:
(1) Remote monitoring/ checking
(2) Data save/ recall function
(3) Input wave form display of voltage and current
(4) Graphical display of harmonics rms values and co ntent rate
(5) Pass/ fail judgement of measured value
- 39 - KEW 2062/2062BT
KEW 2062/2062BT Chapter. 9 Specifications
Chapter. 9 Specifications
9.1 Safety specifications
Location for use : Altitude 2000 m or less, in-door use
Accuracy guaranteed
Temp. & Hum. range : 23°C±5°C, Relative humidity 85% or less (no condensation)
Operating Temp. &: : -10°C to +50°C, 85 % or less (no condensation)
humidity range
Storage Temp. & : -20°C to +60°C, 85 % or less (no condensation)
humidity range
Withstand voltage : 5160 V AC/ 5 sec.
(between current sensor and enclosure or electrical circuit and enclosure)
Insulation : 50 MΩ or more/ 1000 V (between electrical circuit and enclosure)
resistance
Applicable standards : ● IEC 61010-1, -2-032 (main unit)/ -031 (test leads)
Measurement CAT IV 300 V/ CAT III 600 V/ CAT II 1000V
● IEC 61326(EMC) Class B, EN50581 (RoHS),
● EN 301 489-1, EN 300 328, EN 62479, and
● IEC 60529 IP40
9.2. General specifications
Readings update rate : Approx. 0.5 sec . on , , , and functions, Approx. 1.0 sec.
on function
Max. conductor size : ø55 mm (max)
Dimension : 247(L) × 105(W) × 49(D) mm
Weight : Approx. 490g (including batteries)
Accessories : Test lead MODEL 7290 / alligator clip (red, black, yellow,) .......... 1 set
Instruction manual ....................................................................... 1 pce.
Alkaline size AA battery (LR6) ..................................................... 2 pcs.
Soft case MODEL9198 ............................................................... 1 pce.
Continuous operating : Approx. 58 hours
time ( function, continuous measurement, no load, backlight off, using
alkaline size AA (LR6) batteries)
Current consumption : 35 mA typ. (@3.0 V, function)
Communication : Bluetooth® Ver5.0 (KEW2062BT only)
Pollution degree 2,
KEW 2062/2062BT - 40 -
9.3 Measurement specifications KEW 2062/2062BT
Range
40.00 A/ 400.0 A/ 1000 A
selected in the display mode, the selected range is fixed.
Display digit
4-digit
Sampling period
1 cycle/ 500ms
Sampling
PEAK value: moving average is 9 points between 40.0Hz and 70.0Hz only.
Effective input
40.00A range RMS: 0.60 A to 40.00 A, PEAK value: ±(0.6 A to 56.57 A)
1000A range RMS: 60 A to 999.9 A, PEAK va lue: ±(60 A to 1414 A)
Display range
RMS value: 40.00A range :0.30 to 44.00 A
1000A range : 30 A to 1500 A
Crest factor
3 or less on 40.00A/400.0A range, 3 or less 1500 A peak on 1000A range
Accuracy
RMS: (sine wave) 40.0 to 70.0 Hz: ±1.0%rdg±3dgt
70.1 to 1 kHz: ±4.0%rdg±5dgt
Formula
Display digit
4-digit
Accuracy
±0.3%rdg±3dgt (40.0Hz to 999.9Hz, sine wave)
Within sine wave of 40.0Hz to 999.9Hz, ACA effective input range.
” when readings are out of the display range or
display range of ACA).
KEW 2062/2062BT AC Voltage function
KEW 2062/2062BT - 42 -
AC Voltage function
RMS AC voltage value (ACV) [Vrms], Peak value (Absolute value)
[V
|
peak|]
Range
1000V
Display digit
4-digit
Sampling period
One cycle/ 500 ms
Sampling frequency
32.8 kHz (every 30.5ɥs)
PEAK value: moving average is 9 points between 40.0Hz and 70.0Hz
on ly.
Effective input range
RMS: 30.0 V to 999.9 V Peak value: ±(30.0 V to 1414 V)
Display range
RMS: 30.0 V to 1100 V Peak value (absolute value): 30.0 V to 1555 V
* The LCD shows “Lo” when readings are below the lower limit and “OL”
when over the upper limit.
Crest factor
1.7 or less
Accuracy
RMS: sine wave 40.0 to 70.0 Hz: ±0.7%rdg±3dgt
70.1 to 1 kHz: ±3.0%rdg±5dgt
*
Add ±0.5%rdg±5dgt to the accuracy for si ne wa ves other than 40 to 70 Hz.
PEAK value (absolute value): 40.0 to 70.0 Hz: ±2.5%rdg±5dgt
70.1 to 1 kHz: ±4.0%rdg±5dgt
Input impedance
Approx.4 MΩ * resistance value across the terminals
Formula
V=
1
n
(
V
i
)
2
n-1
i=0
Connect and measure L＝V1, N＝V3
i : Sampling point No.
n : Number of samples/ cycle
Voltage frequency (Vf) [Hz]
Display digit
4-digit
Accuracy
±0.3%rdg±3dgt (40.0 Hz to 999.9 Hz, sine wave)
Effective input range
Within sine wave of 40.0Hz to 999.9Hz, ACV effective input range.
Display range 40.0 to 999.9 Hz
The LCD shows “---
” when readings are out of the display range or
display range of ACV).
Signal source
V1 to V3 (voltage across terminals) or A
9.3 Measurement specifications
AC current function
RMS AC current value (ACA) [Arms], Peak value (Absolute value)
[A|peak|]
*
Auto-ranging, range won’t be fixed.
A range shifts to one upper range when the input exceeds 110% or 300%
peak (absolute value) of the currently selected range and shifts to one lower
range when the input drops 90% rms.
Where any of “MAX”, “MIN”, “AVG”, or |PEAK| (peak value) has been
frequency
range
32.8 kHz(30.5 μs interval)
400.0A range RMS: 6.0 A to 400.0 A, PEAK value: ±(6.0 A to 565.7 A)
400.0A range :3.0 (36.0 A*) to 440.0 A
1000A range :30 (360 A
*
While auto-ranging is enabled, values displayed with “( )” will be effective,
and the LCD shows “0” when the input is less than 0.30 A and “OL” when
1100 A is exceeded.
PEAK value (absolute value): 40.00A range : 0.30 A to 120.0 A
PEAK value (absolute value): 40.0 to 70.0 Hz: ±2.5%rdg±5dgt
A=
*
Add ±0.5%rdg±5dgt to the accuracy for si ne wa ves other than 40 to 70 Hz.
n-1
1
(
A
n
i=0
400.0A range : 3.0 A to 1200 A
70.1 to 1 kHz: ±2.0%rdg±5dgt
i： Sampling point No.
2
)
i
n： Number of samples/ cycle
*
) to 1100 A
Current frequency (Af) [Hz]
Effective input range
Display range 40.0 to 999.9Hz
The LCD shows “---
- 41 - KEW 2062/2062BT
KEW 2062/2062BT AC Voltage function
Range
1000V
Display digit
4-digit
Sampling period
One cycle/ 500 ms
Sampling frequency
32.8 kHz (every 30.5ɥs)
on ly.
Effective input range
RMS: 30.0 V to 999.9 V Peak value: ±(30.0 V to 1414 V)
Display range
RMS: 30.0 V to 1100 V Peak value (absolute value): 30.0 V to 1555 V
when over the upper limit.
Crest factor
1.7 or less
Accuracy
RMS: sine wave 40.0 to 70.0 Hz: ±0.7%rdg±3dgt
70.1 to 1 kHz: ±4.0%rdg±5dgt
Input impedance
Approx.4 MΩ * resistance value across the terminals
Formula
Display digit
4-digit
Accuracy
±0.3%rdg±3dgt (40.0 Hz to 999.9 Hz, sine wave)
Effective input range
Within sine wave of 40.0Hz to 999.9Hz, ACV effective input range.
” when readings are out of the display range or
display range of ACV).
Signal source
V1 to V3 (voltage across terminals) or A
AC Voltage function
RMS AC voltage value (ACV) [Vrms], Peak value (Absolute value)
[V|peak|]
PEAK value: moving average is 9 points between 40.0Hz and 70.0Hz
* The LCD shows “Lo” when readings are below the lower limit and “OL”
*
Add ±0.5%rdg±5dgt to the accuracy for si ne wa ves other than 40 to 70 Hz.
PEAK value (absolute value): 40.0 to 70.0 Hz: ±2.5%rdg±5dgt
n-1
1
(
V=
V
i
n
i=0
Voltage frequency (Vf) [Hz]
Display range 40.0 to 999.9 Hz
KEW 2062/2062BT - 42 -
The LCD shows “---
70.1 to 1 kHz: ±3.0%rdg±5dgt
Connect and measure L＝V1, N＝V3
2
)
i : Sampling point No.
n : Number of samples/ cycle
Power function KEW 2062/2062BT
* Switched according to the selected current range.
(The LCD shows ”----” if the reading is out of the guaranteed accuracy range.)
Sampling period
1 cycle/ 500ms
Sampling frequency
32.8 kHz(30.5 μs interval)
frequency range of 45 to 65 Hz.
” will be displayed when readings are out of the
display range of RMS voltage or RMS current and effective input
frequency.
For sine wave with power factor 1 : ±1.7%rdg±5dgt
(doubled: 3P3W, tripled: 3P4W)
Polarity sign
Consumption (flow-in): no sign, Regeneration(flow-out): -
V is used as reference,
Wiring system
Display value
Destination
P
･
Balance 3P3W
Psum(=Ssum×cos(θ))
R=V1･A, S=V3
Balance 3P4W
Psum(=P×3)
R=V1･A, N=V3
* Change the connected points twice
and test (2-wattmeter method)
Displayed only when measureding
hree
times and test
KEW 2062/2062BT Apparent power (S) [VA]
KEW 2062/2062BT - 44 -
Apparent power (S) [VA]
Range
Same as the active power
Display digit
Same as the active power
Effective input range
Same as the active power
Accuracy
±1dgt to the result determined by each measured value
* Sum: add errors of each channel, 3P3W: ±2dgt, 3P4W: ±3dgt
Polarity sign
No sign
Formula
S=V×A * When P >S, P=S.
Wiring system
Display value
Destination
1P2W･1P3W
S
Same as the active power
3P3W (balance)
S
sum
(＝S×√3)
3P4W (balance)
S
sum
(＝S×3)
3P4W (unbalance)
S
sum
(
=S1+S2+S
3
)
※
Sn: Apparent power at the
nth measurement
Reactive power (Q) [Var ]
Range Same as the active power
Display digit
Same as the active power
Effective input range
Same as the active power
Accuracy
±1dgt to the result determined by each measured value
* ±2dgt when measuring balance 3P3W, ±3dgt when measuring balance
3P4W Polarity sign
Phase delay: no sign, Phase advance: -
Formula
Q=√S
2−P2
* Where P >S, P=S.
* Q=0 when ꞁPꞁ>S.
*
Polarity symbol is displayed depending on the current phase angle
with the voltage phase (0°) as reference. See the followings.
0° to -90° to180° : No sign (+) Phase delay
0° to +90° to 180°: Negative (-) Phase advance
*
When |P|＞S, Q＝0.
* Polarity symbol is displayed depending on the voltage-current phase
difference (θ).
0° to -90° to180° : No sign (+) Phase delay
0° to +90° to 180°: Negative (-) Phase advance
Wiring system
Display value
Destination
1P2W･1P3W
Q
Same as the active power
3P3W (balance)
Q
sum
(＝�S
sum
2
−P
sum
2
)
3P4W (balance)
Q
sum
(=Q×3)
3P4W (unbalance)
Q
sum
(
=Q1+Q2+Q
3
)
*
Qn: Reactive power at the
nth measurement
Power function
Active power (P) [W]
Range
Display digit
40.00kW/400.0 kW/1000 kW
4-digit
Effective input range
Display range 40.00kW range : 0.00 to 44.00 kW
Accuracy
Formula
1P2W･1P3W
Unbalance 3P3W
Effective input range of RMS voltage, and RMS current and within the
400.0kW range : 0.0 (36.0 kW) to 440.0 kW
1000kW range : 0 (360 kW) to 1210 kW
* Currently selected range is fixed if you select MAX, MIN, or AVG in
display mode.
* Values within parenthesis will be displayed while auto-ranging function
is activated, and “---
influence of phase angle within ±3.0°
where: within the effective input range for ACV and ACA
* Sum value: Total errors determined b y each measurement channels.
functions, PF: 1, sine wave, and 45 – 65 Hz)
P1､P2 ､Psum(=P1+P2)
n-1
1
(
)
P=
n
V
i×Ai
i=0
i : Sampling point No.
n : Number of samples/ cycle
1P2W:L=V1･A ,N=V3
1P3W: L1/L2=V1
P1 :R=V1･A, S=V2, T=V3
P2 :R=V1 ,S=V2, T=V3･A
Unbalance 3P4W
each phase: P1, P2, P3
Total value: Psum(=P1+P2 +P3)
P1: R=V1･A, N=V3
P2: S=V1･A, N=V3
P3: T=V1･A, N=V3
* Change the connected points t
- 43 - KEW 2062/2062BT
A, N=V3
KEW 2062/2062BT Apparent power (S) [VA]
Range
Same as the active power
Display digit
Same as the active power
Effective input range
Same as the active power
Accuracy
±1dgt to the result determined by each measured value
* Sum: add errors of each channel, 3P3W: ±2dgt, 3P4W: ±3dgt
Polarity sign
No sign
Formula
Wiring system
Display value
Destination
1P2W･1P3W
S
Same as the active power
3P3W (balance)
S
sum
(＝S×√3)
3P4W (balance)
S
sum
(＝S×3)
3P4W (unbalance)
(
)
nth measurement
Range Same as the active power
Display digit
Same as the active power
Effective input range
Same as the active power
Accuracy
±1dgt to the result determined by each measured value
3P4W Polarity sign
Phase delay: no sign, Phase advance: -
Formula
Polarity symbol is displayed depending on the current phase angle
0° to +90° to 180°: Negative (-) Phase advance
Wiring system
Display value
Destination
1P2W･1P3W
Q
Same as the active power
3P3W (balance)
3P4W (balance)
Q
sum
(=Q×3)
3P4W (unbalance)
(
)
nth measurement
Apparent power (S) [VA]
S=V×A * When P >S, P=S.
S
=S1+S2+S
sum
※
Sn: Apparent power at the
Reactive power (Q) [Var ]
* ±2dgt when measuring balance 3P3W, ±3dgt when measuring balance
Q=√S
* Q=0 when ꞁPꞁ>S.
*
with the voltage phase (0°) as reference. See the followings.
*
When |P|＞S, Q＝0.
* Polarity symbol is displayed depending on the voltage-current phase
difference (θ).
0° to -90° to180° : No sign (+) Phase delay
3
2−P2
* Where P >S, P=S.
0° to -90° to180° : No sign (+) Phase delay
0° to +90° to 180°: Negative (-) Phase advance
(＝�S
sum
=Q1+Q2+Q
2
−P
sum
3
Q
sum
Q
sum
KEW 2062/2062BT - 44 -
*
Qn: Reactive power at the
2
)
Power factor (PF) KEW 2062/2062BT
3P4W
P
therefore, -0.99 (advance) will be the average PF.
Display range
-180.0 to .00 to 179.9
range of
active power.
Polarity sign
Phase delay: no sign, Phase advance: -
Measurement
Compare current waveform against voltage waveform with zero-cross
Negative (-) Phase delay
KEW 2062/2062BT Harmonics function
KEW 2062/2062BT - 46 -
Harmonics function
Measurement
method
Frequency fixed sampling
Perform sampling 256 times per input cycle (50/ 60 Hz) and do FFT
calculation. Sampling frequency changes
depending on the preset
nominal frequency.
50Hz…12.8ksps(every 78μs), 60Hz…15.4ksps(every 65μs)
Connect to
L＝V1, N=V3, L/ R/ S/ T (clamp onto power wires) = A
Effective frequency 50/ 60 Hz
Analysis order 1st to 30th order
Window width 1 cycle
Window type
Rectangular
Number of
analysis data
256 points
Analysis rate Once/ 1 sec.
Harmonics RMS voltage
(Vk: 1st fundamental wave to 30th harmonics) [Vrms]
Range, Display digit, effective input range
Same as the RMS voltage
Display range
Same as the RMS voltage
*Content rate 0.0% to 100.0% against fundamental wave
Accuracy
RMS:
1 to 10th: ±5.0%rdg±10dgt
11 to 20
th
: ±10%rdg±10dgt
21 to 30
th
: ±20%rdg±10dgt
Content range:
±1 against the calculated results of each order.
Formula
To connect L＝V1, N＝V3:
Vk=
(
Vkr
)
2
+(Vki
)
2
1
n=-1
k : Harmonics order
Vr :
Real number after voltage
FFT conversion
Vi :
Imaginary number after voltage
FFT conversion
* Content rate=
×
( )
Power factor (PF)
Effective input range Same as the active power
Display range -1.000 to 0.000 to 1.000
Accuracy
Polarity sign Phase delay: no sign, Phase advance: -
Formula
Voltage current phase difference (θ) [deg] (at Single-phase 2-wire measurement only)
method
±1dgt to the result determined by each measured value
* ±2dgt when measuring balance 3P3W, ±3dgt when measuring balance
PF=
; however, PF = cos (θ) only when balance 3P3W
S
*
In case of Three-phase circuit, determined by sum value.
* Nothing is displayed where S=0.
* Polarity sign appears based on the voltage-current phase difference (θ).
0° to -90° to180° : No sign (+) Phase delay
0° to +90° to 180°: Negative (-) Phase advance
* Average value is determined by averaging the amount of advance and
delay, based on PF=1 as reference.
[Example]
Where measured value is PF=0.99, -0.92, and +0.96:
difference between 0.99 and 1= -0.01 (advance),
difference between -0.92 and 1= +0.08 (delay), and
difference between 0.96 and 1= -0.04(advance).
The total difference will be -0.01+0.08+(-0.04)=0.03 (delay).
Then divide the value by 3 (number of measurement): 0.03÷3=0.01
(delay). The average PF is 0.01 behind to1 (PF average value);
The LCD shows “---” when readings are out of the display
position.
* When S=0, nothig is displayed.
* Polarity sign indicates current phase angle with the voltage phase as
reference (0°).
No sign (+) Phase advance
- 45 - KEW 2062/2062BT
KEW 2062/2062BT Harmonics function
Measurement
Frequency fixed sampling
depending on the preset
50Hz…12.8ksps(every 78μs), 60Hz…15.4ksps(every 65μs)
Connect to
L＝V1, N=V3, L/ R/ S/ T (clamp onto power wires) = A
Number of
analysis data
Range, Display digit, effective input range
Same as the RMS voltage
Display range
Same as the RMS voltage
*Content rate 0.0% to 100.0% against fundamental wave
Accuracy
RMS:
±1 against the calculated results of each order.
Formula
To connect L＝V1, N＝V3:
FFT conversion
Harmonics function
method
Effective frequency 50/ 60 Hz
Analysis order 1st to 30th order
Window width 1 cycle
Window type
Analysis rate Once/ 1 sec.
Harmonics RMS voltage
Perform sampling 256 times per input cycle (50/ 60 Hz) and do FFT
calculation. Sampling frequency changes
nominal frequency.
Rectangular
256 points
(Vk: 1st fundamental wave to 30th harmonics) [Vrms]
KEW 2062/2062BT - 46 -
1 to 10th: ±5.0%rdg±10dgt
th
: ±10%rdg±10dgt
11 to 20
th
: ±20%rdg±10dgt
21 to 30
Content range:
1
(
Vk=
Vkr
n=-1
* Content rate=
2
)
+(Vki
( )
k : Harmonics order
Real number after voltage
Vr :
FFT conversion
2
)
Imaginary number after voltage
Vi :
×
Harmonics function KEW 2062/2062BT
Range, Display digit, effective input range
Same as the RMS current
Display range
Same as the RMS current
*Content rate 0.0% to 100.0% against fundamental wave
Accuracy
RMS:
±1 against the calculated results of each order.
Formula
k : Harmonics order
FFT conversion
Formula
Formula
KEW 2062/2062BT Phase detection function
KEW 2062/2062BT - 48 -
Total harmonics voltage distortion factor (V THD-R) [%]
Display digit
4-digit
Display range
0.0% to 100.0%
Accuracy
±1 against the calculated results of each measured value.
Formula
V THD-R =
�
∑ (
Vk
)
2
30
k=2
×100
�
∑ (
Vk
)
2
30
k=1
V : Harmonics voltage
k : Harmonics order
Total harmonics current distortion factor (A THD-R) [%]
Display digit
4-digit
Display range
0.0% to 100.0%
Accuracy
±1 against the calculated results of each measured value.
Formula
A THD-R =
�
∑ (
Ak
)
2
30
k=2
×100
�
∑ (
Ak
)
2
30
k=1
A : Harmonics current
k : Harmonics order
Phase detection function
Effective input
range
RMS voltage (ACV) 80 to 1100 V when measured waveform is 45 to 65 Hz
sine wave.
If there’s no phase differences between each voltage phases,
differences of voltage amplitude within 10%
If phase voltage is balanced, phase difference:
3P4W (Three-phase 4-wire) within ±30°
3P3W (Three-phase 3-wire) within ±15°
Display
(1.2.3) Discontinuous buzzer: Pi, Pi, Pi
(3.2.1) Continuous: Pii
(-.-.-) No buzzer sounds
: Positive phase, all phases live
: Negative phase, all phases live
: Unjudgeable
Missing phase, abnormal
Frequency, out of voltage
effective input range, unbalance
Harmonics RMS current
(Ak: 1st fundamental wave to 30th harmonics) [Arms]
Total harmonics voltage distortion factor (V THD-F) [%]
Display digit 4-digit
Display range 0.0% to 100.0%
Accuracy ±1 against the calculated results of each measured value.
Total harmonics current distortion factor (A THD-F) [%]
Display digit
Display range
Accuracy
1 to 10th: ±5.0%rdg±10dgt
th
: ±10%rdg±10dgt
11 to 20
th
: ±20%rdg±10dgt
21 to 30
Content range:
1
(
Ak=
Akr
n=-1
* Content rate =
2
)
+(Aki
Ar :
2
)
Ai :
×
( )
Real number after current
FFT conversion
Imaginary number after current
V THD-F =
V1(Fundamental wave)
4-digit
0.0% to 100.0%
±1 against the calculated results of each measured value.
A THD-F =
A1(Fundamental wave)
30
2
(
)
×100
Vk
k=2
V : Harmonics voltage
k : Harmonics order
30
2
(
)
×100
Ak
k=2
A : Harmonics current
k : Harmonics order
- 47 - KEW 2062/2062BT
KEW 2062/2062BT Phase detection function
Formula
Formula
3P3W (Three-phase 3-wire) within ±15°
(1.2.3) Discontinuous buzzer: Pi, Pi, Pi
: Positive phase, all phases live
effective input range, unbalance
Total harmonics voltage distortion factor (V THD-R) [%]
Display digit
Display range
Accuracy
4-digit
0.0% to 100.0%
±1 against the calculated results of each measured value.
30
2
�
∑ (
)
×100
Vk
V THD-R =
�
k=2
∑ (
30
Vk
k=1
2
)
V : Harmonics voltage
k : Harmonics order
Total harmonics current distortion factor (A THD-R) [%]
Display digit
Display range
Accuracy
4-digit
0.0% to 100.0%
±1 against the calculated results of each measured value.
30
2
�
∑ (
)
×100
Ak
A THD-R =
k=2
�
30
∑ (
k=1
Ak
2
)
A : Harmonics current
k : Harmonics order
Phase detection function
Effective input
range
Display
RMS voltage (ACV) 80 to 1100 V when measured waveform is 45 to 65 Hz
sine wave.
If there’s no phase differences between each voltage phases,
If phase voltage is balanced, phase difference:
3P4W (Three-phase 4-wire) within ±30°
(3.2.1) Continuous: Pii
(-.-.-) No buzzer sounds
differences of voltage amplitude within 10%
: Negative phase, all phases live
: Unjudgeable
Missing phase, abnormal
Frequency, out of voltage
KEW 2062/2062BT - 48 -
KEW 2062/2062BT
Distributor
Kyoritsu reserves the rights to change specifications or designs described in this manual without
notice and without obligations.
01-21 92-2398
Loading...