Kyoritsu Electrical Instruments Works, Ltd. KEW6315 Installation guide

Quick Manual
POWER QUALITY ANALYZER
KEW6315
KYORITSU ELECTRICAL
INSTRUMENTS WORKS, LTD.

−1 −KEW6315
Preface KEW6315
KEW6315 Feature
KEW6315 - 2 -
Feature
This is a Clamp-type Power Quality Analyzer that can be used for various wiring systems.
It can be used for simple measurements of instantaneous/ integration/ demand values, and also for
analysis of harmonics and events related to power quality and for the simulation of power factor
correction with capacitor banks. Moreover, it can display waveforms and vectors of voltage and current.
Data can be saved either in the SD card or the internal memory, and can be transferred to PC via USB,
or in real time via Bluetooth communication.
Safety construction
Designed to meet the international safety standard IEC 61010-1 CAT.IV 300V/ CAT.III 600V/ CAT.II 1000V.
Power quality analysis
KEW6315 is designed to meet the international standard IEC61000-4-30 Class S and can measure
frequency and r.m.s. voltage with high accuracy, and also can analyze harmonics. Moreover, it can
measure swell, dip, interruption, transient, inrush current and flicker all at once without a gap.
Power measurement
KEW6315 measures active/reactive/apparent power, electrical energy, power factor, r.m.s. current, phase
angle and neutral current simultaneously.
Wiring configuration
KEW6315 supports: Single-phase 2-wire (4ch), Single-phase 3-wire (2ch), Three-phase 3-wire (2ch) and
Three-phase 4-wire.
Demand measurement
Electricity consumption can be easily monitored so as not to exceed the target maximum demand values.
Waveform/ vector display
Voltage and current can be displayed by waveform or vector.
Saving data
KEW6315 is endowed with a logging function with the preset recording interval. Data can be saved by manual
operation or by specifying date & time. Screen data can be saved by using the Print Screen function.
Dual power supply system
KEW6315 operates either with AC power supply or with batteries. Both dry-cell batteries (alkaline) and
rechargeable batteries (Ni-MH) can be used. To charge the rechargeable battery, use the charger which is
manufactured by the same company as the batteries. In the event of power interruption, while operating with
AC power supply, power to the instrument is automatically restored by the batteries in the instrument.
Large display
TFT color display with large screen.
Light & compact design
Clamp sensor type, compact and light weight design.
Application
Data in the SD card or the internal memory can be saved in PC via USB. Analysis of the downloaded
data and instrument settings are possible by using the special software “KEW Windows for KEW6315”.
Real-time communication is available via Bluetooth.
Input/ Output function
Analog signals from thermometers or light sensors can be measured simultaneously with electrical power
data via 2 analog inputs (DC voltage); when any events related to power quality occur, signals can be
transmitted to alarm devices via one digital output.
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Preface KEW6315
- 1 - KEW6315
● Preface
This Quick manual is a simplified version of the full instruction manual which can be found in
the supplied CD-ROM. This manual is intended only as a handy reference guide and should
only be used after having read the full instruction manual which contains full details on each
function of this instrument and the items contained in the package.
● Safety Warning!
The instruction manual contains warnings and safety procedures which have to be observed
to ensure safe operation of the instrument and maintain it in a safe condition. Thus, these
operating instructions have to be read prior to using the instrument.
Content
1. Instrument Overview ··············································································· 2
2. Start/ Stop Recording ···································································· 5
3. Instrument Layout ················································································· 13
4. Getting Started ····················································································· 17
5. Inst/ Integration/ Demand
Inst value : W ····················································································· 19
Integration value: Wh/ Demand ······························································ 21
6. Vector ······················································································ 25
7. Waveform ················································································· 26
8. Harmonics Analysis ···································································· 27
9. Power Quality
Event(Swell/ Dip/ Int/ Inrush current/ Transient) ·········································· 30
Flicker ································································································ 33
10. Setting ·················································································· 35
11. SD Card/ Saved Data ··········································································· 38
The latest software can be downloaded from our homepage: http://www.kew-ltd.co.jp.

−2 −
KEW6315
KEW6315 Feature
KEW6315 Feature
KEW6315 - 2 -
Feature
This is a Clamp-type Power Quality Analyzer that can be used for various wiring systems.
It can be used for simple measurements of instantaneous/ integration/ demand values, and also for
analysis of harmonics and events related to power quality and for the simulation of power factor
correction with capacitor banks. Moreover, it can display waveforms and vectors of voltage and current.
Data can be saved either in the SD card or the internal memory, and can be transferred to PC via USB,
or in real time via Bluetooth communication.
Safety construction
Designed to meet the international safety standard IEC 61010-1 CAT.IV 300V/ CAT.III 600V/ CAT.II 1000V.
Power quality analysis
KEW6315 is designed to meet the international standard IEC61000-4-30 Class S and can measure
frequency and r.m.s. voltage with high accuracy, and also can analyze harmonics. Moreover, it can
measure swell, dip, interruption, transient, inrush current and flicker all at once without a gap.
Power measurement
KEW6315 measures active/reactive/apparent power, electrical energy, power factor, r.m.s. current, phase
angle and neutral current simultaneously.
Wiring configuration
KEW6315 supports: Single-phase 2-wire (4ch), Single-phase 3-wire (2ch), Three-phase 3-wire (2ch) and
Three-phase 4-wire.
Demand measurement
Electricity consumption can be easily monitored so as not to exceed the target maximum demand values.
Waveform/ vector display
Voltage and current can be displayed by waveform or vector.
Saving data
KEW6315 is endowed with a logging function with the preset recording interval. Data can be saved by manual
operation or by specifying date & time. Screen data can be saved by using the Print Screen function.
Dual power supply system
KEW6315 operates either with AC power supply or with batteries. Both dry-cell batteries (alkaline) and
rechargeable batteries (Ni-MH) can be used. To charge the rechargeable battery, use the charger which is
manufactured by the same company as the batteries. In the event of power interruption, while operating with
AC power supply, power to the instrument is automatically restored by the batteries in the instrument.
Large display
TFT color display with large screen.
Light & compact design
Clamp sensor type, compact and light weight design.
Application
Data in the SD card or the internal memory can be saved in PC via USB. Analysis of the downloaded
data and instrument settings are possible by using the special software “KEW Windows for KEW6315”.
Real-time communication is available via Bluetooth.
Input/ Output function
Analog signals from thermometers or light sensors can be measured simultaneously with electrical power
data via 2 analog inputs (DC voltage); when any events related to power quality occur, signals can be
transmitted to alarm devices via one digital output.
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Preface KEW6315
- 1 - KEW6315
● Preface
This Quick manual is a simplified version of the full instruction manual which can be found in
the supplied CD-ROM. This manual is intended only as a handy reference guide and should
only be used after having read the full instruction manual which contains full details on each
function of this instrument and the items contained in the package.
● Safety Warning!
The instruction manual contains warnings and safety procedures which have to be observed
to ensure safe operation of the instrument and maintain it in a safe condition. Thus, these
operating instructions have to be read prior to using the instrument.
Content
1. Instrument Overview ··············································································· 2
2. Start/ Stop Recording ···································································· 5
3. Instrument Layout ················································································· 13
4. Getting Started ····················································································· 17
5. Inst/ Integration/ Demand
Inst value : W ····················································································· 19
Integration value: Wh/ Demand ······························································ 21
6. Vector ······················································································ 25
7. Waveform ················································································· 26
8. Harmonics Analysis ···································································· 27
9. Power Quality
Event(Swell/ Dip/ Int/ Inrush current/ Transient) ·········································· 30
Flicker ································································································ 33
10. Setting ·················································································· 35
11. SD Card/ Saved Data ··········································································· 38
The latest software can be downloaded from our homepage: http://www.kew-ltd.co.jp.

−3 −KEW6315
Functional overview KEW6315
Functional overview KEW6315
- 3 - KEW6315
Inst/ Integration/ Demand
Display the avg/ max/ min instantaneous values of
current/ voltage/ active power/ apparent power/
reactive power. Integration values also can be viewed
by switching screens. Moreover, demand values with
the preset target value can also be checked.
See “5. Inst/ Integration/ Demand” for further details.
Vector and Wiring check
Vectors of voltage and current per CH are
displayed on a graph. KEW6315 will perform
wiring check.
See “6. Vector” for further details.
Functional overview
Start/ Stop
Choose either “Quick start guide” or “Start now” to start
recording. Can do simple and fast start-up setting by
selecting “Quick start guide”.
See “2. Start/Stop Recording” for further details.
KEW6315 Functional overview
KEW6315 - 4 -
Waveform
Waveforms of voltage and current per CH are displayed on a
graph.
See “7. Waveform” for further details.
Harmonic Analysis
Harmonic components of voltage and current per CH are
displayed on a graph.
See “8. Harmonic Analysis” for further details.
Power Quality (QUALITY) event
Display voltage swell, dip, int, transient, inrush current
and flicker.
See “9. Power Quality” for further details.
Setting (SET UP)
Make settings for KEW6315 and measurements.
See “10. Setting” for further details.

−4 −
KEW6315
KEW6315 Functional overview
Functional overview KEW6315
- 3 - KEW6315
Inst/ Integration/ Demand
Display the avg/ max/ min instantaneous values of
current/ voltage/ active power/ apparent power/
reactive power. Integration values also can be viewed
by switching screens. Moreover, demand values with
the preset target value can also be checked.
See “5. Inst/ Integration/ Demand” for further details.
Vector and Wiring check
Vectors of voltage and current per CH are
displayed on a graph. KEW6315 will perform
wiring check.
See “6. Vector” for further details.
Functional overview
Start/ Stop
Choose either “Quick start guide” or “Start now” to start
recording. Can do simple and fast start-up setting by
selecting “Quick start guide”.
See “2. Start/Stop Recording” for further details.
KEW6315 Functional overview
KEW6315 - 4 -
Waveform
Waveforms of voltage and current per CH are displayed on a
graph.
See “7. Waveform” for further details.
Harmonic Analysis
Harmonic components of voltage and current per CH are
displayed on a graph.
See “8. Harmonic Analysis” for further details.
Power Quality (QUALITY) event
Display voltage swell, dip, int, transient, inrush current
and flicker.
See “9. Power Quality” for further details.
Setting (SET UP)
Make settings for KEW6315 and measurements.
See “10. Setting” for further details.

−5 −KEW6315
Start/ stop recording KEW6315
Start/ stop recording KEW6315
- 5 - KEW6315
Steps for measurement
Can start recordings with simple steps by selecting “Quick start guide”.
Ensure your safety and do the appropriate preparations before starting measurements.
Select the
recording item
Select the
wiring system
Confirm the
connections
Check the test
environment
(1) Select the item you want to record.
* The number of selected items will have effect on file size and
also on max recording time.
(2) Select the wiring system to be measured.
* Select a proper wiring system for accurate
measurements.
2
2
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(3) Connect to the circuit to be tested.
* Read and follow the safety precautions
described in the instruction manual.
(4)(5) Check the Test environment.
* Self-diagnosis, wiring check and detection of connected
sensors will be performed in this test.
* It is recommended to do this test for ensuring the testing
conditions are correct.
See P.17.
See P.8.
See P.7.
See P.40.
KEW6315 Start/ stop recording
KEW6315 - 6 -
Select the
rec. interval
Select the
rec. method
Check the
selected method
Start
recording
(6) Select a recording interval.
* Selecting a short interval gets the file size large. In this
case, a long period recording cannot be performed.
(7)(8)(9) Select a recording method.
(10) Prepared. Recording will start.
The mark “ REC ” will appear on the screen
when the recording starts and the green LED
(status indicator) lights up.
If you want to terminate the recording, press
the “ ” button and follow the instructions
displayed on the screen.
See P.11.
See P.38.

−6 −
KEW6315
KEW6315 Start/ stop recording
Start/ stop recording KEW6315
- 5 - KEW6315
Steps for measurement
Can start recordings with simple steps by selecting “Quick start guide”.
Ensure your safety and do the appropriate preparations before starting measurements.
Select the
recording item
Select the
wiring system
Confirm the
connections
Check the test
environment
(1) Select the item you want to record.
* The number of selected items will have effect on file size and
also on max recording time.
(2) Select the wiring system to be measured.
* Select a proper wiring system for accurate
measurements.
2
2
2.
.
. S
S
St
t
ta
a
ar
r
rt
t
t/
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/ S
S
St
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o
p
p
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R
Re
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co
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(3) Connect to the circuit to be tested.
* Read and follow the safety precautions
described in the instruction manual.
(4)(5) Check the Test environment.
* Self-diagnosis, wiring check and detection of connected
sensors will be performed in this test.
* It is recommended to do this test for ensuring the testing
conditions are correct.
See P.17.
See P.8.
See P.7.
See P.40.
KEW6315 Start/ stop recording
KEW6315 - 6 -
Select the
rec. interval
Select the
rec. method
Check the
selected method
Start
recording
(6) Select a recording interval.
* Selecting a short interval gets the file size large. In this
case, a long period recording cannot be performed.
(7)(8)(9) Select a recording method.
(10) Prepared. Recording will start.
The mark “ REC ” will appear on the screen
when the recording starts and the green LED
(status indicator) lights up.
If you want to terminate the recording, press
the “ ” button and follow the instructions
displayed on the screen.
See P.11.
See P.38.

−7 −KEW6315
Wiring system KEW6315
Wiring system KEW6315
- 7 - KEW6315
Orientation of Clamp sensor
Power
source
Arrow mark:
Point towards
load side.
Load
Reverse clamping switches the symbols (+/-)
for active power (P).
(2) Wiring system
Any of the followings can be selected.
L1
L1
N
LLoad
(1)
1P2W
Power
su
pp
l
y
1P2W×1
1P2W×2
1P2W×3
1P2W×4
Load
(2)
1P2W
Load
(3)
1P2W
Load
(4)
1P2W
N
L
N
L
N
L
N
L
A4
A3
A2
A1
V
N
V
1
NLoad
(1)
1P3W
Power
supply
1P3W×1
1P3W×2
Load
(2)
1P3W
N
L2
L2
N
A4
A3
A2
A1
V
N
V
1
L1
L2
V
2
L1(R)
L2(S) Load
(1)
3P3W
Power
supply
3P3W×1
3P3W×2
Load
(2)
3P3W
L2(S)
L3(T)
A4
A3
A2
A1
V
N
V
1
L1(R)
L3(T)
V
2
L2(S)
L3(T)
L1(R)
L2(S) Load
3P3W
Power
supply
3P3W3
A
L2(S)
L3(T)
A3
A2
A1
V
3
V
1
L1(R)
L3(T)
V
2
L1(R)
L2(S) Load
3P4W
Power supply
3P4W
L2(S)
L3(T)
A3
A2
A1
V
3
V
1
L1(R)
L3(T)
V
2
L1(R)
V
N
N N
KEW6315 Environment check
KEW6315 - 8 -
(4)/ (5) Test Environment Check
Select and press the “ENTER” on “OK”/
”NG” to see the details.
Test environment check
Select “ Start test ”and press the “ENTER”
button to start the test. The test result will be
displayed on the screen.
Wiring check
Test results of each item will be displayed.
* NG result may be given, even if the wiring is correct,
at the measurement site under bad power factors.
Self-diagnosis
Operating condition of the instrument system will
be checked and the result will be displayed.
Sensor detection
The connected sensors are automatically
detected and their max Ranges will be set.

−8 −
KEW6315
KEW6315 Environment check
Wiring system KEW6315
- 7 - KEW6315
Orientation of Clamp sensor
Power
source
Arrow mark:
Point towards
load side.
Load
Reverse clamping switches the symbols (+/-)
for active power (P).
(2) Wiring system
Any of the followings can be selected.
L1
L1
N
LLoad
(1)
1P2W
Power
su
pp
l
y
1P2W×1
1P2W×2
1P2W×3
1P2W×4
Load
(2)
1P2W
Load
(3)
1P2W
Load
(4)
1P2W
N
L
N
L
N
L
N
L
A4
A3
A2
A1
V
N
V
1
NLoad
(1)
1P3W
Power
supply
1P3W×1
1P3W×2
Load
(2)
1P3W
N
L2
L2
N
A4
A3
A2
A1
V
N
V
1
L1
L2
V
2
L1(R)
L2(S) Load
(1)
3P3W
Power
supply
3P3W×1
3P3W×2
Load
(2)
3P3W
L2(S)
L3(T)
A4
A3
A2
A1
V
N
V
1
L1(R)
L3(T)
V
2
L2(S)
L3(T)
L1(R)
L2(S) Load
3P3W
Power
supply
3P3W3
A
L2(S)
L3(T)
A3
A2
A1
V
3
V
1
L1(R)
L3(T)
V
2
L1(R)
L2(S) Load
3P4W
Power supply
3P4W
L2(S)
L3(T)
A3
A2
A1
V
3
V
1
L1(R)
L3(T)
V
2
L1(R)
V
N
N N
KEW6315 Environment check
KEW6315 - 8 -
(4)/ (5) Test Environment Check
Select and press the “ENTER” on “OK”/
”NG” to see the details.
Test environment check
Select “ Start test ”and press the “ENTER”
button to start the test. The test result will be
displayed on the screen.
Wiring check
Test results of each item will be displayed.
* NG result may be given, even if the wiring is correct,
at the measurement site under bad power factors.
Self-diagnosis
Operating condition of the instrument system will
be checked and the result will be displayed.
Sensor detection
The connected sensors are automatically
detected and their max Ranges will be set.

−9 −KEW6315
Wiring check KEW6315
Wiring check KEW6315
- 9 - KEW6315
NG judgment
Wiring check
Close the result display. Then, the blinking vectors and the
values of NG items will be displayed. If all the results are
OK, the ideal vector diagram will be displayed at the lower
left corner.
Criteria of judgment and cause
Check Criteria of Judgment Causes
Frequency
Frequency of V1 is within 40
- 70Hz.
- Voltage clip is firmly connected to the DUT?
- Measuring too high harmonic components?
AC voltage
input
AC voltage input is 10% or
more of (Nominal voltage x
VT).
- Voltage clip is firmly connected to the DUT?
- Voltage test lead is firmly connected to the
AC voltage input terminal on the instrument?
Voltage
balance
AC voltage input is within
±20% of reference voltage
(V1).
* (not checked in
single-phase wiring)
- Settings are matched with the wiring system under
test?
- Voltage clip is firmly connected to the DUT?
- Voltage test lead is firmly connected to the
AC voltage input terminal on the instrument?
Voltage
phase
Phase of AC voltage input is
within ±10º of reference value
(proper vector).
- Voltage test leads are properly connected?
(Connected to proper channels?)
Current
input
Current input is 5% or more
and 110% or less of (Current
Range x CT).
- Clamp sensors are firmly connected to the Power
input terminals on the instrument?
- Setting for Current Range is appropriate for input levels?
Current
phase
- Power factor (PF, absolute
value) at each CH is 0.5 or
more.
- Active power (P) at each
CH is positive value.
- Arrow mark on the Clamp sensor and the orientation
of flowing current coincide with each other?
(Power supply to Load)
- Clamp sensors are connected properly?
KEW6315 Self-diagnosis
KEW6315 - 10 -
Self-diagnosis
If “NG” judgment is given frequently, there might be something wrong with the instrument. Stop using the
instrument and refer to “Troubleshooting” in the instruction manual.
Sensor detection
If the detection result is NG, each sensor type will be displayed in red.
Criteria of judgment and cause
Causes
Check Causes
Type of
current sensor
- Types of the connected current sensors are harmonized? Types of the current
sensors used for measurements should be the same.
???
(cause unknown)
- Current sensors are firmly connected to the instrument?
- If any failures are in doubt:
Exchange the connections of the sensors and test again.
Connect the current sensor, for which "NG" is given, to the CH on which
another sensor is properly detected.
If the result "NG" is given for the same CH, a defect of the instrument is
suspected. A defect of sensor is suspected if "NG" is given for the same
sensor connected to another CH.
Stop using the instrument and the sensor, if any defects are in doubt, and refer
to "Troubleshooting" in the instruction manual.

−10 −
KEW6315
KEW6315 Self-diagnosis
Wiring check KEW6315
- 9 - KEW6315
NG judgment
Wiring check
Close the result display. Then, the blinking vectors and the
values of NG items will be displayed. If all the results are
OK, the ideal vector diagram will be displayed at the lower
left corner.
Criteria of judgment and cause
Check Criteria of Judgment Causes
Frequency
Frequency of V1 is within 40
- 70Hz.
- Voltage clip is firmly connected to the DUT?
- Measuring too high harmonic components?
AC voltage
input
AC voltage input is 10% or
more of (Nominal voltage x
VT).
- Voltage clip is firmly connected to the DUT?
- Voltage test lead is firmly connected to the
AC voltage input terminal on the instrument?
Voltage
balance
AC voltage input is within
±20% of reference voltage
(V1).
* (not checked in
single-phase wiring)
- Settings are matched with the wiring system under
test?
- Voltage clip is firmly connected to the DUT?
- Voltage test lead is firmly connected to the
AC voltage input terminal on the instrument?
Voltage
phase
Phase of AC voltage input is
within ±10º of reference value
(proper vector).
- Voltage test leads are properly connected?
(Connected to proper channels?)
Current
input
Current input is 5% or more
and 110% or less of (Current
Range x CT).
- Clamp sensors are firmly connected to the Power
input terminals on the instrument?
- Setting for Current Range is appropriate for input levels?
Current
phase
- Power factor (PF, absolute
value) at each CH is 0.5 or
more.
- Active power (P) at each
CH is positive value.
- Arrow mark on the Clamp sensor and the orientation
of flowing current coincide with each other?
(Power supply to Load)
- Clamp sensors are connected properly?
KEW6315 Self-diagnosis
KEW6315 - 10 -
Self-diagnosis
If “NG” judgment is given frequently, there might be something wrong with the instrument. Stop using the
instrument and refer to “Troubleshooting” in the instruction manual.
Sensor detection
If the detection result is NG, each sensor type will be displayed in red.
Criteria of judgment and cause
Causes
Check Causes
Type of
current sensor
- Types of the connected current sensors are harmonized? Types of the current
sensors used for measurements should be the same.
???
(cause unknown)
- Current sensors are firmly connected to the instrument?
- If any failures are in doubt:
Exchange the connections of the sensors and test again.
Connect the current sensor, for which "NG" is given, to the CH on which
another sensor is properly detected.
If the result "NG" is given for the same CH, a defect of the instrument is
suspected. A defect of sensor is suspected if "NG" is given for the same
sensor connected to another CH.
Stop using the instrument and the sensor, if any defects are in doubt, and refer
to "Troubleshooting" in the instruction manual.

−11 −KEW6315
Setting for recording method KEW6315
Setting for recording method KEW6315
- 11 - KEW6315
(8)/ (9) Setting for recording method
The following explains how to set recording start date and time.
(8) Specify the recording start date and time.
During the selected period, KEW6315 performs recording at the preset intervals.
Example: When the date & time are specified as above, the recording period will be as follows.
From 8:00 on August 2, 2013 to 18:00 on August 7, 2013,
(9) Specify the recording time period.
KEW6315 performs recording during the selected time period at the preset intervals, and repeats
recording processes during the preset time span.
Example: When the time period is specified as above, the recording period is as follows. KEW6315 does not
record data between 18:00 and 8:00.
(i) 8:00 to 18:00 on August 1, 2013,
(ii) 8:00 to 18:00 on August 2, 2013,
(iii) 8:00 to 18:00 on August 3, 2013,
(iv) 8:00 to 18:00 on August 4, 2013,
(v) 8:00 to 18:00 on August 5, 2013,
(vi) 8:00 to 18:00 on August 6, 2013,
(vii) 8:00 to 18:00 on August 7, 2013, and
(viii) 8:00 to 18:00 on August 8, 2013.
KEW6315 Operating procedure
KEW6315 - 12 -
Switching of displayed parameters
Basically, the Cursor Key is used for selecting an item, the ENTER Key is for confirming the
selection, and the ESC Key is for canceling the alternation. Taking the procedures in “Quick Start
Guide” as an example, Key operations are explained as follows.
Press the Cursor Key to move the blue highlight, showing the item
is being selected, over the items in blue letters. In the screen at the
left is the Recording start screen. Press the Cursor Key and move
the blue highlight on the desirable recording method, and press the
ENTER Key to confirm the selection. To quit the start guide, press
the ESC Key.
If the display of the selectable items is similar to the one shown
to the left, then the up, down, right and left Cursor Keys can be
used. Use the Cursor Keys to select the proper wiring system and
press the ENTER Key to confirm the selection. To return to the
previous screen and cancel the changes, press the ESC Key.
To alter the numbers such as Date/ Time, move the blue highlight
over digits with the right and left Cursor Keys and alter the number
w
ith the up and down Cursor Keys.
In the screen to the left, the tenth place of the day is being selected.
The number can be increased or decreased by 1 with the up/ down
Cursor Keys. Press the ENTER Key to confirm the selection, or
press the ESC Key to return to the previous screen and cancel
the changes.

−12 −
KEW6315
KEW6315 Operating procedure
Setting for recording method KEW6315
- 11 - KEW6315
(8)/ (9) Setting for recording method
The following explains how to set recording start date and time.
(8) Specify the recording start date and time.
During the selected period, KEW6315 performs recording at the preset intervals.
Example: When the date & time are specified as above, the recording period will be as follows.
From 8:00 on August 2, 2013 to 18:00 on August 7, 2013,
(9) Specify the recording time period.
KEW6315 performs recording during the selected time period at the preset intervals, and repeats
recording processes during the preset time span.
Example: When the time period is specified as above, the recording period is as follows. KEW6315 does not
record data between 18:00 and 8:00.
(i) 8:00 to 18:00 on August 1, 2013,
(ii) 8:00 to 18:00 on August 2, 2013,
(iii) 8:00 to 18:00 on August 3, 2013,
(iv) 8:00 to 18:00 on August 4, 2013,
(v) 8:00 to 18:00 on August 5, 2013,
(vi) 8:00 to 18:00 on August 6, 2013,
(vii) 8:00 to 18:00 on August 7, 2013, and
(viii) 8:00 to 18:00 on August 8, 2013.
KEW6315 Operating procedure
KEW6315 - 12 -
Switching of displayed parameters
Basically, the Cursor Key is used for selecting an item, the ENTER Key is for confirming the
selection, and the ESC Key is for canceling the alternation. Taking the procedures in “Quick Start
Guide” as an example, Key operations are explained as follows.
Press the Cursor Key to move the blue highlight, showing the item
is being selected, over the items in blue letters. In the screen at the
left is the Recording start screen. Press the Cursor Key and move
the blue highlight on the desirable recording method, and press the
ENTER Key to confirm the selection. To quit the start guide, press
the ESC Key.
If the display of the selectable items is similar to the one shown
to the left, then the up, down, right and left Cursor Keys can be
used. Use the Cursor Keys to select the proper wiring system and
press the ENTER Key to confirm the selection. To return to the
previous screen and cancel the changes, press the ESC Key.
To alter the numbers such as Date/ Time, move the blue highlight
over digits with the right and left Cursor Keys and alter the number
w
ith the up and down Cursor Keys.
In the screen to the left, the tenth place of the day is being selected.
The number can be increased or decreased by 1 with the up/ down
Cursor Keys. Press the ENTER Key to confirm the selection, or
press the ESC Key to return to the previous screen and cancel
the changes.

−13 −KEW6315
Instrument layout KEW6315
Instrument layout KEW6315
- 13 - KEW6315
各部の名称
Front View
コ
3
3
3.
.
. I
I
In
n
ns
s
st
t
tr
r
ru
u
um
m
me
e
en
n
nt
t
t L
L
La
a
a
y
y
y
o
o
ou
u
ut
t
t
Keys
ENTER Key
Confirm the entries.
Display
(LCD)
Function Key
Execute the displayed function.
PRINT SCREEN Key
Save the displayed screen as BMP file.
DATA HOLD Key/ KEY LOCK Key
Hold the readings on the display.
* Measurement continues while the
readings are being held on the display.
KEY
LOCK
Long press (at least 2 sec) disables
all Keys to prevent operational
errors. Another long press (at least
2 sec) is required to restore the
disabled Keys.
LCD Key
Turn on/ off the backlight.
Long press (at least 2 sec) changes
the brightness and contrast.
Cursor Key
Select items or switch displays.
SETUP Key
Change and confirm: Basic, Measurement, Record-
ing and other settings, and also edit the saved data.
Power Key
Power on/ off.
START/ STOP Key
Start/ stop
measurement.
.
Menu Key
W/Wh View inst, integration
and demand values.
Harmonic
Analysis
View harmonic voltage, current
and power energy.
Vector View phases. Power
Quality
View the detailed info about:
swell, dip, int, transient, inrush
current and flicker.
Waveform View voltage/ current
waveforms.
Status LED
Green Light up: Recording& measuring
Blink: Stand-by
Red Blink: Backlight is off.
ESC Key/ RESET Key
Cancel setting changes and return to
the previous settings.
KEW6315 Connector
KEW6315 - 14 -
Analog Input/ Digital Output Terminal
SD Card Slot
USB port
Connector
Side face Battery case
AC voltage Input Terminal
(VN, V1, V2, V3)
Power Connector
Current Input Terminal
(A1, A2, A3, A4)
Terminal Cover
Battery Cover

−14 −
KEW6315
KEW6315 Connector
Instrument layout KEW6315
- 13 - KEW6315
各部の名称
Front View
コ
3
3
3.
.
. I
I
In
n
ns
s
st
t
tr
r
ru
u
um
m
me
e
en
n
nt
t
t L
L
La
a
a
y
y
y
o
o
ou
u
ut
t
t
Keys
ENTER Key
Confirm the entries.
Display
(LCD)
Function Key
Execute the displayed function.
PRINT SCREEN Key
Save the displayed screen as BMP file.
DATA HOLD Key/ KEY LOCK Key
Hold the readings on the display.
* Measurement continues while the
readings are being held on the display.
KEY
LOCK
Long press (at least 2 sec) disables
all Keys to prevent operational
errors. Another long press (at least
2 sec) is required to restore the
disabled Keys.
LCD Key
Turn on/ off the backlight.
Long press (at least 2 sec) changes
the brightness and contrast.
Cursor Key
Select items or switch displays.
SETUP Key
Change and confirm: Basic, Measurement, Record-
ing and other settings, and also edit the saved data.
Power Key
Power on/ off.
START/ STOP Key
Start/ stop
measurement.
.
Menu Key
W/Wh View inst, integration
and demand values.
Harmonic
Analysis
View harmonic voltage, current
and power energy.
Vector View phases. Power
Quality
View the detailed info about:
swell, dip, int, transient, inrush
current and flicker.
Waveform View voltage/ current
waveforms.
Status LED
Green Light up: Recording& measuring
Blink: Stand-by
Red Blink: Backlight is off.
ESC Key/ RESET Key
Cancel setting changes and return to
the previous settings.
KEW6315 Connector
KEW6315 - 14 -
Analog Input/ Digital Output Terminal
SD Card Slot
USB port
Connector
Side face Battery case
AC voltage Input Terminal
(VN, V1, V2, V3)
Power Connector
Current Input Terminal
(A1, A2, A3, A4)
Terminal Cover
Battery Cover

−15 −KEW6315
Symbols on the LCD KEW6315
Symbols on the LCD KEW6315
- 15 - KEW6315
Icons on the LCD
Icon Status
KEW6315 is operating with battery. This icon varies in 4 steps according to the
battery power condition.
KEW6315 is operating with AC power.
Holding the display update.
Keys are locked.
Buzzer is off.
SD card is set and available.
Recording the data on the SD card.
Available free space in the SD card is not enough.
Failed to access to the SD card.
Internal memory is available.
* This icon is displayed when a measurement starts without SD card.
Recording the data in the internal memory.
Available free space in the internal memory is not enough.
Stand-by mode
Recording the measured data.
Capacity of recording media is full.
USB is available.
Bluetooth is available.
KEW6315 Symbols on the LCD
KEW6315 - 16 -
Symbols on the LCD
*1 W screen: Displays of V and VL can be “customized” when “3P4W” is selected.
*2 W screen: “An” is displayed only when “3P4W” is selected.
*3 W screen: Displays of PA and C can be “customized”.
Backlight and Contrast Adjustment
Hold down the “ ” LCD Key at least 2 sec to show the sliding bar to adjust the backlight brightness and
display contrast. Use the Cursor Key to slide the cursor on the bar for the adjustment. Press the ENTER
Key and exit from the adjustment mode. Press the ESC or LCD Key again to cancel the adjustment and
exit from the adjustment mode.
Symbols displayed on the LCD
V*1 Phase voltage VL*1 Line voltage A Current
P Active
power
+ consumption
Q Reactive
power
+ lagging S Apparent
power
- regenerating - leading
PF Power
factor
+ lagging f Frequency
- leading
DC1 Analog input
voltage at 1ch DC2 Analog input
voltage at 2ch
An*2 Neutral current PA*3Phase
angle
+ lagging
C*3Capacitance calculation
- leading
WP+ Active power energy
(consumption) WS+ Apparent power energy
(consumption) WQi+ Reactive power energy
(lagging)
WP- Active power energy
(regenerating) WS- Apparent power energy
(regenerating) WQc+ Reactive power energy
(leading)
THD Voltage/ Current
total distortion factor
Pst
(1min) Voltage flicker (1 min) Pst
Short term voltage flicker Plt Long term voltage flicker
Brightness adjustment
Backlight brightness can be changed by 11 levels.
Contrast adjustment
Contrast can be changed by 11 levels.

−16 −
KEW6315
KEW6315 Symbols on the LCD
Symbols on the LCD KEW6315
- 15 - KEW6315
Icons on the LCD
Icon Status
KEW6315 is operating with battery. This icon varies in 4 steps according to the
battery power condition.
KEW6315 is operating with AC power.
Holding the display update.
Keys are locked.
Buzzer is off.
SD card is set and available.
Recording the data on the SD card.
Available free space in the SD card is not enough.
Failed to access to the SD card.
Internal memory is available.
* This icon is displayed when a measurement starts without SD card.
Recording the data in the internal memory.
Available free space in the internal memory is not enough.
Stand-by mode
Recording the measured data.
Capacity of recording media is full.
USB is available.
Bluetooth is available.
KEW6315 Symbols on the LCD
KEW6315 - 16 -
Symbols on the LCD
*1 W screen: Displays of V and VL can be “customized” when “3P4W” is selected.
*2 W screen: “An” is displayed only when “3P4W” is selected.
*3 W screen: Displays of PA and C can be “customized”.
Backlight and Contrast Adjustment
Hold down the “ ” LCD Key at least 2 sec to show the sliding bar to adjust the backlight brightness and
display contrast. Use the Cursor Key to slide the cursor on the bar for the adjustment. Press the ENTER
Key and exit from the adjustment mode. Press the ESC or LCD Key again to cancel the adjustment and
exit from the adjustment mode.
Symbols displayed on the LCD
V*1 Phase voltage VL*1 Line voltage A Current
P Active
power
+ consumption
Q Reactive
power
+ lagging S Apparent
power
- regenerating - leading
PF Power
factor
+ lagging f Frequency
- leading
DC1 Analog input
voltage at 1ch DC2 Analog input
voltage at 2ch
An*2 Neutral current PA*3Phase
angle
+ lagging
C*3Capacitance calculation
- leading
WP+ Active power energy
(consumption) WS+ Apparent power energy
(consumption) WQi+ Reactive power energy
(lagging)
WP- Active power energy
(regenerating) WS- Apparent power energy
(regenerating) WQc+ Reactive power energy
(leading)
THD Voltage/ Current
total distortion factor
Pst
(1min) Voltage flicker (1 min) Pst
Short term voltage flicker Plt Long term voltage flicker
Brightness adjustment
Backlight brightness can be changed by 11 levels.
Contrast adjustment
Contrast can be changed by 11 levels.

−17 −KEW6315
Power supply KEW6315
Power supply KEW6315
- 17 - KEW6315
測定前の確認
Power supply
KEW6315 operates with either an AC power supply or batteries. Capable of performing measurements in
the event of AC power interruption, power to the instrument is automatically restored by the batteries
installed in the instrument. AA size alkaline battery (LR6) and AA size rechargeable battery (Ni-MH) can
be both used. To charge the rechargeable battery, use the charger which is manufactured by the same
company as the batteries. KEW6315 cannot charge batteries.
If an AC supply is interrupted and the batteries have not been inserted, the instrument goes off and
all data may lost.
Battery Mark on the LCD/ Battery level
Power supply icon changes as follows, and the battery icon varies according to the battery condition.
Power supply icon
Powered by AC
Powered by
battery
How to install batteries:
Install batteries in correct polarity
as marked inside.
Battery power is consumed even if the instrument is being off. Remove all the batteries if the instrument is
to be stored and will not be in use for a long period.
Battery level
4-level
Possible continuous measurement hours:
- approx 3 hours with size AA alkaline batteries, and
- approx 4.5 hours with size AA Ni-MH (1900mA/h) batteries.
* These are ref. values with LCD turned off.
Instrument works normally.
* Voltage of full-charged Ni-MH battery is lower than the one of the
full-charged alkaline battery, so the level indicator may not be the
same as the one shown above even after fully charged.
Measurement continues, but data save is ceased.
(Further data will not be saved, but the data measured
before the battery level drops to the lowest level are
saved.)
4
4
4.
.
. G
G
Ge
e
et
t
tt
t
ti
i
in
n
n
g
g
g
S
S
St
t
ta
a
a
r
r
r
t
t
te
e
ed
d
d
KEW6315 Cord connection
KEW6315 - 18 -
Cord Connection
Start-up Screen
Model name and software version will be displayed upon powering on the instrument. Stop using
the instrument if it does not get started properly, and refer to the “Trouble-shooting” in the
instruction manual.
Match the
arrow marks.
Rated supply voltage : 100 - 240VAC(±10%)
Rated supply frequency : 45 - 65Hz
Max power consumption : 20VAmax
Voltage test leads
Power cord
Clamp sensor

−18 −
KEW6315
KEW6315 Cord connection
Power supply KEW6315
- 17 - KEW6315
測定前の確認
Power supply
KEW6315 operates with either an AC power supply or batteries. Capable of performing measurements in
the event of AC power interruption, power to the instrument is automatically restored by the batteries
installed in the instrument. AA size alkaline battery (LR6) and AA size rechargeable battery (Ni-MH) can
be both used. To charge the rechargeable battery, use the charger which is manufactured by the same
company as the batteries. KEW6315 cannot charge batteries.
If an AC supply is interrupted and the batteries have not been inserted, the instrument goes off and
all data may lost.
Battery Mark on the LCD/ Battery level
Power supply icon changes as follows, and the battery icon varies according to the battery condition.
Power supply icon
Powered by AC
Powered by
battery
How to install batteries:
Install batteries in correct polarity
as marked inside.
Battery power is consumed even if the instrument is being off. Remove all the batteries if the instrument is
to be stored and will not be in use for a long period.
Battery level
4-level
Possible continuous measurement hours:
- approx 3 hours with size AA alkaline batteries, and
- approx 4.5 hours with size AA Ni-MH (1900mA/h) batteries.
* These are ref. values with LCD turned off.
Instrument works normally.
* Voltage of full-charged Ni-MH battery is lower than the one of the
full-charged alkaline battery, so the level indicator may not be the
same as the one shown above even after fully charged.
Measurement continues, but data save is ceased.
(Further data will not be saved, but the data measured
before the battery level drops to the lowest level are
saved.)
4
4
4.
.
. G
G
Ge
e
et
t
tt
t
ti
i
in
n
n
g
g
g
S
S
St
t
ta
a
a
r
r
r
t
t
te
e
ed
d
d
KEW6315 Cord connection
KEW6315 - 18 -
Cord Connection
Start-up Screen
Model name and software version will be displayed upon powering on the instrument. Stop using
the instrument if it does not get started properly, and refer to the “Trouble-shooting” in the
instruction manual.
Match the
arrow marks.
Rated supply voltage : 100 - 240VAC(±10%)
Rated supply frequency : 45 - 65Hz
Max power consumption : 20VAmax
Voltage test leads
Power cord
Clamp sensor

−19 −KEW6315
Instantaneous value: W KEW6315
Instantaneous value: W KEW6315
- 19 - KEW6315
瞬時値／積算値／デマンド
Switching screens
Press the button to toggle the screens.
瞬時値「W」
Switching the items to be displayed
Use the right and left Cursor Keys to switch the displayed systems and the up and down Cursor
Keys to switch the avg, max and min inst values.
W (Inst value) Wh (Integration value) Demand
Measured values
per CH
Sum of measured
values (all CHs)
5
5
5.
.
. I
I
In
n
ns
s
st
t
t/
/
/ I
I
In
n
nt
t
te
e
e
g
g
g
r
r
ra
a
at
t
ti
i
io
o
on
n
n
/
/
/
D D
De
e
em
m
ma
a
an
n
nd
d
d v
v
va
a
al
l
lu
u
ue
e
es
s
s
I
I
In
n
ns
s
st
t
t v
v
va
a
al
l
lu
u
ue
e
e:
:
: “
“
“W
W
W”
”
”
KEW6315 Instantaneous value: W
KEW6315 - 20 -
Zoom
Zoom and display the selected items.
4-split 8-split
Customize
Select and change the items to be displayed.
Trend
Changes of measured values are displayed on a graph.