Kyoritsu Electrical Instruments Works, Ltd. KEW6315 User manual

Instruction Manual
Power Quality Analyzer
KEW6315

Contents KEW6315
- 1 - KEW6315
Contents···················································································································· 1
Unpacking Procedure ······························································································· 5
Safety warnings ········································································································ 8
Chap. 1 Instrument overview ·················································································· 11
1.1 Functional overview ················································································· 11
1.2 Features ··································································································· 13
1.3 Constructional drawing············································································· 14
1.4 Steps for measurement············································································ 15
Chap.2 Instrument layout························································································ 16
2.1 Display (LCD)/ Keys················································································· 16
2.2 Connector································································································· 17
2.3 Side face ·································································································· 18
2.4 Voltage test lead and Clamp sensor························································· 19
Chap.3 Basic operations························································································· 20
3.1 Key operation ··························································································· 20
3.2 Icons on the LCD ····················································································· 21
3.3 Symbols on the LCD ················································································ 22
3.4 Backlight and Contrast Adjustment ·························································· 22
3.5 Screens···································································································· 23
zInst/ Integration/ Demand··································································· 23
zVector································································································· 24
zWaveform··························································································· 24
zHarmonic Analysis ············································································· 25
zPower quality ····················································································· 26
zSettings······························································································ 26
Chap.4 Getting started···························································································· 27
4.1 Preparation······························································································· 27
zPutting Input terminal plate on the Input terminal······························· 27
zAttaching Markers to Voltage test leads and Clamp sensors ············· 28

KEW6315 Contents
KEW6315 - 2 -
4.2 Power Supply ··························································································· 29
zBattery ······························································································· 29
zBattery Mark on the LCD/ Battery level·············································· 30
zHow to install batteries······································································· 31
zPower cord connection ······································································ 31
zPower supply rating ··········································································· 32
4.3 Placing / removing SD card······································································ 33
zInserting SD card ··············································································· 34
zRemoving SD card············································································· 34
4.4 Voltage test leads and Clamp sensor connection ······························ 35
4.5 Start KEW6315 ·················································································· 36
zStart-up Screen·················································································· 36
zCautionary message ·········································································· 36
4.6 Recording procedures········································································ 37
zStart of recording ··············································································· 37
zEnd of recording ················································································ 38
zStart measurement with “Quick start guide” ····································· 39
Chap.5 Settings ······································································································ 47
5.1 List of setting items ·················································································· 47
5.2 Basic setting····························································································· 48
zSettings of wiring system ··································································· 49
zWiring connection ·············································································· 51
zSettings of voltage measurement······················································· 53
zVT/CT ································································································ 54
zSettings of current measurement ······················································· 56
zSettings of External input terminal/ reference frequency···················· 58
5.3 Measurement setting················································································ 59
zSettings of demand measurement ····················································· 59
zOutline of demand measurement concept ········································· 62
zSettings for Harmonic analysis··························································· 63
zThreshold setting for Power quality (Event) ······································· 65

Contents KEW6315
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zFilter setting for Flicker measurement················································ 69
zTarget power factor for Capacitance calculation ································ 70
5.4 Recording setting ····················································································· 71
zSettings for recording items ······························································· 72
zSaved items ······················································································· 73
zRecording method·············································································· 74
zPossible recording time······································································ 76
5.5 Other settings··························································································· 77
zSettings for system environment························································ 77
zKEW6315 Setting··············································································· 79
5.6 Saved data ······························································································· 82
zTo delete, transfer or format the recorded data·································· 82
zType of the saved data······································································· 87
zKEW6315 settings and Data loading ················································· 89
Chap. 6 Displayed items ························································································· 92
6.1 Instantaneous value “W” ·········································································· 92
zList display of the measured values ··················································· 92
zZoom display······················································································ 96
zDisplaying Trend graph ······································································ 97
zChanging displayed items and display position·································· 99
6.2 Integration value “Wh”············································································ 100
6.3 Demand·································································································· 102
zShowing the measured values ························································· 102
zShifts in specific period ···································································· 103
zDemand change··············································································· 104
6.4 Vector····································································································· 105
6.5 Waveform······························································································· 107
6.6 Harmonics ······························································································ 108
zDisplaying harmonics on the bar graph············································ 108
zDisplaying the list of harmonics························································ 112

KEW6315 Contents
KEW6315 - 4 -
6.7 Power quality·························································································· 114
zFactors impair power quality and symptoms···································· 114
zDisplaying recorded events······························································ 116
zDisplaying measured flicker values in list form································· 120
zDisplaying trend graph of Pst, 1min ················································· 121
zDisplaying changes
of Plt································································· 122
Chap.7 Other functions ························································································· 123
Chap.8 Device connection ···················································································· 125
8.1 Data transfer to PC ················································································ 125
8.2 Using Bluetooth®function······································································· 126
8.3 Signal control ························································································· 126
zConnection to input/ output terminals··············································· 126
8.4 Getting power from measured lines ······················································· 128
Chap. 9 PC software for setting and data analysis ··············································· 129
Chap.10 Specification ··························································································· 130
10.1 Safety requirements ··············································································· 130
10.2 General specification·············································································· 130
10.3 Measurement specification····································································· 133
zMeasured items and the number of analysis points ························· 133
zItems measured at Instantaneous measurement ····························· 134
zItems to be calculated ······································································ 137
zItems measured at Integration measurement ·································· 140
zItems measured at Demand measurement······································ 143
zItems measured at Harmonics measurement ·································· 144
zItems measured at Power quality measurement ······························ 149
10.4 Specification of Clamp sensor································································ 152
Chap. 11 Troubleshooting ····················································································· 157
11.1 General troubleshooting········································································· 157
11.2 Error messages and actions··································································· 158

Unpacking Procedure KEW6315
5136WEK-5-
Unpacking procedure
We thank you for purchasing our Power Quality Analyzer “KEW6315”. Please
check the contents and instrument before use.
●Items listed below are included with the standard set:
1 Main unit KEW6315 :1 pce
2 Voltage test lead
MODEL7255 :1 set
*red, white, blue, black: 1 pce for each
(with alligator clips)
3 Power cord MODEL7169 :1 pce
4 USB cord MODEL7219 :1 pce
5 Quick manual 1 pce
6 CD-ROM 1 pce
7 Battery Alkaline size AA battery LR6: 6 pcs
8 SD card M-8326-02 :1 pce (2GB)
9 Carrying case MODEL9125 :1 pce
10 Input terminal plate 1 pce
11 Cable marker 8-color x 4pcs each (red, blue, yellow,
green, brown, gray, black, white)
straplanoitpO
12 Clamp sensor Depending on model purchased
13 Instruction manual for
Clamp sensor 1 pce
14 Magnetic carrying case MODEL9132
15 Power supply adapter MODEL8312(CAT III 150V, CAT II 240V)

KEW6315 Unpacking Procedure
KEW6315 - 6 -
1. Main unit 2. Voltage test lead 3. Power cord 4.USB cord
5. Quick manual 6.CD-ROM 7. Battery 8. SD card 9. Carrying case
10. Input terminal plate 11. Cable marker
2GB M-8326-02

Unpacking Procedure KEW6315
5136WEK-7-
12. Clamp sensor (depending on model purchased)
13. Instruction manual for Clamp sensor
14. Magnetic carrying 15.Power supply adapter
case
50A Type(ø24mm) M-8128
100A Type(ø24mm) M-8127
200A Type(ø40mm) M-8126
500A Type(ø40mm) M-8125
1000A Type(ø68/110mm）
3000A Type(ø150/170mm）
M-8124/KEW8130
KEW8129/8133
10A Type(ø24mm) M-8146
10A Type(ø40mm) M-8147
10A Type(ø68mm) M-8148
1A Type(ø24mm) M-8141
1A Type(ø40mm) M-8142
1A Type(ø68mm) M-8143
● In case any of the items listed above are found to be damaged or missing or if
the printing is unclear, please contact your local KYORITSU distributor.
●Storage
Store the items as shown below after use.

KEW6315 Safety warnings
-8-5136WEK
Safety warnings
This instrument has been designed, manufactured and tested according to IEC 61010-1: 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 tomaintain it in safe condition. Therefore, read through
these operating instructions before starting to use the instrument.
WARNING
- For about Instruction manual -
●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.
●Read the enclosed Quick manual after reading this instruction manual.
●As to the Clamp sensor use, refer to the instruction manual supplied with the sensor.
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 under test. Kyoritsu assumes no responsibility for
damage and injury caused by misuse or not following the instructions 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 : is reserved for conditions and actions that are likely to cause serious or fatal injury.
WARNING : is reserved for conditions and actions that can cause serious or fatal injury.
CAUTION : is reserved for conditions and actions that can cause injury or instrument damage.
Measurement Category
To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards for various
electrical environments, categorized as O to CATIV, and called measurement categories. Higher-numbered
categories correspond to electrical environments with greater momentary energy, so a measuring instrument
designed for CATIII environments can endure greater momentary energy than one designed for CATII.
O : Circuits which are not directly connected to the mains power supply.
CAT II : Electrical circuits of equipment connected to an AC electrical outlet by a power cord.
CAT III : Primaryelectrical circuits of the equipment connected directly to the distribution panel,
and feeders from the distribution panel to outlets.
CAT IV : The circuit from the service drop to the service entrance, and to the power meter and
primary overcurrent protection device (distribution panel).

Safety warnings KEW6315
5136WEK-9-
DANGER
●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.
●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 the following values.
* 300V AC for CAT IV, 600V AC for CAT III, 1000V AC for CAT II
●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.
- Battery -
●Do not try to replace batteries during a measurement.
●Brand and type of the batteries to be used should be harmonized.
- Power cord -
●Connect the Power cord to an outlet.
●Use only the Power cord supplied with thisinstrument.
- Power supply connector -
●Never touch the Power supply connector although it is insulated while the instrument is operating with
batteries.
- Voltage test leads -
●Use only the ones supplied with this instrument.
●Choose and use the test leads and caps that are suitable for the measurement category.
●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.
●Do not connect a Voltage test lead unless required for measuring the desired parameters.
●Connect Voltage test leads to the instrument first, and only then connect them to the circuit under test.
●Keep your fingers behind the protective fingerguard and barrier during a measurement.
Protective fingerguard and Barrier: provides protection against electrical shock and ensuring the minimum
required air and creepage distances.
●Never disconnect the voltage test leads from the connectors 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.
●Stop using the test lead if the outer jacket is damaged and the inner metal or color jacket is exposed.
- Clamp sensor -
●Use only the ones dedicated for this instrument.
●Confirm that the measured current rating of the test lead and the maximum rated voltage are not
exceeded.
●Do not connect a Clamp sensor unless required for measuring the desired parameters.
●Connect sensors to the instrument first, and only then connect them to the circuit under test.
●Keep your fingers behind the barrier during a measurement.
Barrier: provides protection against electrical shock and ensuring the minimum required air and
creepage distances.

KEW6315 Safety warnings
-01-5136WEK
●Never disconnect sensors from the connectors of the instrument while the instrument is in use.
●Connect to the downstream side of a circuit breaker since a current capacity at the upstream side
is large.
●Do not touch two lines under test with the metal tips of the test leads.
Caution
●Caution should be taken since conductors under test may be hot.
●Never apply currents or voltages exceeding the maximum allowable input for the instrument for a
long time.
●Do not apply currents or voltages for the Clamp sensors or Voltage test leads 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.
●Insert an SD card to the slot with the top side turned up. If the card is inserted up-side-down, the SD
card or the instrument may be damaged. Confirm the
●While using an SD card, do not replace or remove the card. (The symbol blinks while accessing
SD card.) Otherwise, the saved data in the card may be lost or the instrument may be damaged.
- Clamp sensor -
●Do not bend or pull the cable of the Clamp sensor.
● Types of the current sensors used for measurements should be the same.
- Treatment after use -
●Power off the instrument and disconnect the Power cord, Voltage test leads and Clamp sensors from
the instrument.
●Remove the batteries if the instrument is to be stored and will not be in use for a long period.
●Remove the SD card when carrying the instrument.
●Never give strong vibrations or drop shocks when carrying the instrument.
●Do not expose the instrument to direct sunlight, high temperatures, humidity or dew.
●Use a damp cloth with neutral detergent or water for cleaning the instrument. Do not use abrasives
or solvents.
●Do not store the instrument if it is wet.
Carefully read and follow the instructions: DANGER, WARNING,CAUTIONand NOTE ( )
described in each section.
Meaning of symbols on the instrument:
User must refer to the explanations in the instruction manual.
Instrument with double or reinforced insulation
AC
(Functional) Earth terminal
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ee “4.6 Recor
d
w
ration/ De
max/ min instan
o
wer/ apparent
p
e
s also can be vi
nd values with t
h
.
W
” (P.92), 6.2 Int
e
1
02) ” for further
d
s
trume
n
n
al overvie
w
p
Q
uick start guid
e
d
o simple and f
a
k
start guide”.
d
ing procedur
e
-
mand
taneous values
o
p
ower/ reactive
p
ewed by switchi
n
h
e preset target
v
e
gration “Wh” (
P
d
etails.
Ve
Ve
c
on
po
s
Se
e
n
t over
v
w
e
” or “Start now
”
a
st start-up setti
n
e
s”(P.37) for fur
t
-
11 -
o
f current/
p
ower.
n
g screens.
v
alue can
P
.100),
e
ctor and
W
c
tors of voltage
a
a graph. Execu
t
s
sible from this
s
e
“6.4 Vector” (
P
v
iew
”
to start
n
g by
t
her details.
W
iring ch
e
a
nd current per
t
ing wiring chec
k
s
creen.
P
.105) for furthe
r
K
e
ck
CH are display
e
k
function is
r
details.
KEW6315
K
EW6315
e
d

KEW6
3
KEW6
3
Se
t
Adju
s
See
“
3
15
3
15
t
ting (SET
st
settings of KE
W
“
5. Settings” (
P
.
UP)
W
6315 and mea
s
P
47) for further d
- 1
Wave
f
Wavefor
m
graph.
See “6.5
W
H
a
Har
m
dis
p
See
s
urements.
etails.
2 -
f
orm
m
s of voltage an
d
W
aveform” ( P. 1
a
rmonic A
n
m
onic compone
p
layed on a gra
p
“6.6. Harmoni
c
Power
Q
Display volta
g
and flicker.
See “6.7. Po
w
d
current per C
H
07) for further d
e
n
alysis
nts of voltage a
n
p
h.
c
s” (P.108) for f
u
Q
uality (Q
U
g
e swell, dip, int
,
w
er Qualit
y
” ( P.
1
1.1 Function
H
are displayed
e
tails.
n
d current per
C
u
rther details.
U
ALITY) e
v
,
transient, inru
s
1
14) for further
d
al overvie
w
on a
C
H are
v
ent
s
h current
d
etails.

1.2 Features KEW6315
5136WEK-31-
1.2 Features
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 on the
SD card or in 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, gapless, all at once.
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 (4-system), Single-phase 3-wire (2-system), Three-phase 3-wire
(2-system) 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. Size AA alkaline dry-cell batteries and
size AA Ni-MH rechargeable batteries can both be used. To charge size AA Ni-MH rechargeable batteries,
use the charger which is manufactured by the same company as the batteries. Inthe 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 with android devices 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.

KEW6
3
KEW6
3
1.3
Siz
e
bat
t
Siz
e
rec
h
3
15
3
15
Constru
c
e
AA alkaline dr
y
t
er
y
(LR6) or
e
AA Ni-MH
h
argeable batte
r
AC Voltage
c
tional dra
w
y
-cell
r
y
input
- 1
w
ing
4 -
Current i
n
D
A
SD c
1
n
put
D
igital output (1
A
nalog input (2
c
ard
1
.3 Construction
Power
c
ch) to recorde
r
c
h) from ther
m
or illumino
m
USB
al overview
c
ord
r
or alarm
m
ometer
m
eter
PC

1.4 Steps for measurement KEW6315
- 15 - KEW6315
1.4 Steps for measurement
Read through the operating instructions described in “Safety
warnings” (P.8) before starting to use the instrument.
Preparation
Chap. 4: Getting started (P.27)
Cord and Sensor Connection
Clause 4.4: Voltage test leads and Clamp sensor connection (P.35)
Turning on the instrument.
Clause 4.5: Start KEW6315 (P.36)
Making basic settings.
Clause 5.2: Basic setting (P.48)
Reading the setup data
Clause 5.6: Saved data (P.82)
Wiring
Clause 5.2: Basic setting – Wiring (P.51)
Wiring check
Clause 6.4: Vector (P.105)
Advanced setting and data save method
Clause 5.3: Measurement setting (P.59)/ 5.4: Recording setting (P.71)
Confirming the measured values.
Clause 6.1: Inst value [W] (P.92)/ 6.4: Vector (P.105)
Start/ stop recording
Clause 4.6: Recording procedures (P.37)
Confirming the measured data.
Chap. 6: Displayed items (P.92)
Disconnect the cords and sensors from the measurement line, and turn off
the instrument.
Data analysis on PC
Clause 8.1: Data transfer to PC (P.125)
Chap. 9: PC software for setting and data analysis (P.129)

KEW6315 2.1 Display (LCD)/ Keys
KEW6315 - 16 -
Chap.2 Instrument layout
2.1 Display (LCD)/ Keys
Display (LCD)
Keys

2.2 Connector KEW6315
5136WEK-71-
2.2 Connector
Wiring configuration AC Voltage Input
Terminal
Current Input
Terminal*
Single-phase 2-wire (1-system) 1P2W×1 VN, V1 A1
Single-phase 2-wire (2-system) 1P2W×2 VN, V1 A1, A2
Single-phase 2-wire (3-system) 1P2W×3 VN, V1 A1, A2, A3
Single-phase 2-wire (4-system) 1P2W×4 VN, V1 A1, A2, A3, A4
Single-phase 3-wire (1-system) 1P3W×1 VN, V1, V2 A1, A2
Single-phase 3-wire (2-system) 1P3W×2 VN, V1, V2 A1, A2, A3, A4
Three-phase 3-wire (1-system) 3P3W×1 VN, V1, V2 A1, A2
Three-phase 3-wire (2-system) 3P3W×2 VN, V1, V2 A1, A2, A3, A4
Three-phase 3-wire 3A 3P3W3A V1, V2, V3 A1, A2, A3
Three-phase 4-wire 3P4W×1 VN, V1, V2, V3 A1, A2, A3
* Measurements of r.m.s. values and harmonics are
* Types of the current sensors used for measurements should be the same.
possible at the Current terminals, which are
not used for wiring connection.
AC Voltage Input Terminal
(VN, V1, V2, V3)
Power Connector
Current Input Terminal
(A1, A2, A3, A4)
Terminal Cover

KEW6315 2.3 Side face
KEW6315 - 18 -
Analog input/ Digital output cover
SD slot cover
USB port
USB port cover
Analog input/ Digital output terminals
SD card slot
2.3 Side face
< When the Connector cover is closed. >
< When the Connector cover is opened. >