KYORITSU 6310 Quick Manual

Supplementary sheet （KEW6310Quick manual） (English)

Supports 2G / 4G / 8GB CF cards.

● Operation check has completed

Supplier 2GB 4GB 8GB

SanDisk Corp.

Ultra II 15MB/s CF 2GB

SDCFH-002G

*

This instrument supports FAT16 and cannot save data of 2GB or more if a

card of 4GB or more is used.

(Identified as over capacity when the area of usage exceeds 2GB.)

● Max possible recoding time
Twice the recording time for 1GB

e.g. Demand measurement with an interval of 1 sec
1GB: 5 days, 2GB or more: 10 days

*

Max number of file is 512 regardless of memory capacity.

Ultra II 15MB/s CF 4GB

SDCFH-004G

Ultra II 15MB/s CF 8GB

SDCFH-008G

Quick manual

POWER QUALITY ANALYZER

KEW 6310

− 1 −

KEW6310

Contents KEW6310

●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.

Contents

１． Instrument Overview …………………………………………………………………………… 2
  ２． Instrument Layout ……………………………………………………………………………… 5
  ３． Getting started ………………………………………………………………………………… 7

４． Setting
  ５． Instantaneous (Inst) value Measurement

  ６． Integration value Measurement

  ７． Demand Measurement

  ８． WAVE Range

  ９． Harmonic Analysis …………………………………………………………………… 25

  10． Power Quality ………………………………………………………………………… 27

Swell / Dip / Short interruption (Int) Measurement

Transient Measurement …………………………………………………………… 29
Inrush current Measurement ……………………………………………………… 31
Unbalance Ratio …………………………………………………………………… 33
Flicker ……………………………………………………………………………… 35
Capacitance Calculation …………………………………………………………… 37

  11． CF Card / Saved data ………………………………………………………………………… 39

  12. Wiring check …………………………………………………………………………………… 42

………………………………………………………………………………… 10

…………………………………………… 15

……………………………………………………… 17

……………………………………………………………… 19

………………………………………………………………………… 23

……………………………… 27

The latest software can be downloaded from our web site.

http://www.kew-ltd.co.jp

KEW6310 Instrument Overview

１．Instrument Overview

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 monitoring
waveforms and vectors, analyzing harmonics and measuring fluctuations in supply voltages and for
the simulation of power factor correction with capacitor banks. Data can be saved either in the internal
memory or a CF card, and can be transferred to a PC either via an USB lead or a CF Card reader.

Safety construction

 Designed to meet the international safety standard IEC 61010-1 CAT.III 600V/ CAT.II 1000V

Wiring configuration

 KEW6310 supports : Single-phase 2-wire, Single-phase 3-wire, Three-phase 3-wire, Three-phase 4-wire.

Measurement and calculation

  KEW6310 measures voltage (RMS), current (RMS), and calculates active/reactive/apparent power,

power factor, phase angle, frequency, neutral current and active/ reactive/ apparent electric energy.
(RMS)

Demand measurment

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.

Harmonic analysis

 Harmonic components of voltage and current can be measured and analyzed.

Power quality analysis

  Measuring Swell/ Dip/ Int, Transient, Inrush current, Unbalance ratio and flicker*, moreover, simulating

power factor correction with capacitor banks.

* Flicker measurement function is only available with ver.2.00 or later.

Saving data

  KEW6310 is endowed with a logging function with a preset recording interval. Data can be saved by

manual operation or at pre-set time & date. Screen data can be saved by using Print Screen function.

Dual power supply system

  KEW6310 operates either with an AC power supply or with batteries. Both dry-cell batteries (alkaline)

and rechargeable batteries (Ni-MH) can be used. Battery charge while rechargeable batteries installed in
the instrument is possible. In the event of interruption, while operating with AC power supply, power to
the instrument is automatically restored by the batteries in the instrument.

Large display

 Color display with large screen

Light & compact design

 Clamp sensor type, compact and light weight design

Application

  Data in the internal memory or CF card can be saved in a PC via a USB lead or a CF Card reader. As

well supplied software facilitates setting, optional analysis software facilitates data analysis.

Input/output function

  Analogue signals from thermometers or light sensors can be measured simultaneously with electrical

power data via 2 analogue inputs (DC voltage); signals exceeding a preset threshold values at each
range can be transmitted to alarms devices via 1 digital output.

KEW6310

− 2 −

Functional Overview KEW6310

Functional Overview

Instantaneous value measurement

Measures average/max/min values of instantaneous
values of current, voltage and electric power.

See (Section 5) W Range for further details.

Integration value measurement

Measures active/ apparent/ reactive powers on each CH.

See (Section 6) Wh Range for further details.

Demand measurement

Measures demand values based on the preset target
values. Digital output signals alert the user that the
predicted value may exceed the target value.

See (Section 7) DEMAND Range for further details.

− 3 −

SET UP

Setting of KEW6310 or of measurements.

See (Section 4) Setting for further details.

KEW6310

KEW6310 Functional Overview

Measurement at WAVE Range

Displays vector / waveform of voltages and currents per CH

See (Section 8) WAVE Range for further details.

Harmonic measurement

Measures / analyzes harmonic components of current &
voltages

KEW6310

See (Section 9) Harmonic Analysis for further details.

Power quality analysis

Measures sw el l, dip , int, transient, inrush curre nt ,
unbalance ratio and flicker, and also simulates power
factor correction with capacitor banks.

* Flicker measurement function is only available with ver.2.00 or

later.

See (Section 10) Power Quality for further details.

− 4 −

Instrument Layout KEW6310

２．Instrument Layout

Front view

Function Key

Execute the displayed
function

Display

Keys

PRINT SCREEN

Save the displayed screen as BMP files

DATA HOLD ╱ KEY LOCK Key

Hold the readings.
* Measurement continues even if
 screen is frozen.

Long pr e s s (2 se c or mo re)
disa b l e s all Ke y s to preve n t
opera tional error. Another long
press (2 sec or more) is required
to restore the disabled Keys.

LCD ON ╱ OFF Key

Key

Display / hide the
indications on the LCD

Cursor Key

Select setting,Switch
screens

ENTER Key

LED status indicator

Light up: recording&measuring

Green

Flash: stand-by

Red Flash: charging batteries

W

Wh

DEMAND

Measures
inst values

Measures
integration values

Measures
demand values

Power Key

Power ON／OFF

Menu Key

Waveform Measures waveforms

Harmonic
analysis

QUALITY

SET UP

− 5 −

Confirms entries

ESC ╱ RESET Key

Cancel setting changes,
clear integration
d e m a n d d a t a w i th

Cursor Keys.

Analyzes harmonic components

Records Swell/ Dip/ Int/
transient with time information.

Basic/ Measurement/ Save/
Other settings

KEW6310

／

KEW6310 Connector

Connector

Power Connector

Voltage Input Terminal

(VN, V1, V2, V3)

Current Input Terminal

(A1, A2, A3, A4)

Terminal Cover

Side face

<When the Connector Cover is closed> <When the Connector Cover is opened>

CF Card Cover

Analogue Input/ Digital output

USB Port

Eject Button

CF Card Slot

Analogue Input/ Digital output Terminal

USB Connector

Battery Case

KEW6310

Battery Cover

Selector switch
cover

− 6 −

Selector switch

*Selector switch is under the Selector switch cover.

Getting Started KEW6310

3. Getting Started

  The KEW6310 operates with either an AC power supply or batteries. In the event of AC power

interruption, power to the instrument is automatically restored by the batteries in the instrument. Dry­cell batteries (alkaline) and rechargeable ones (Ni-MH); can be both used. It is also possible to charge
rechargeable batteries in the instrument.

  Remove the Selector Switch Cover, and slide the Selector Switch to left or right depending on the

batteries to be used.

DRY-CELL BATTERY RECHARGEABLE BATTERY

Battery can be
used

Position of
Selector switch

Selector switch
cover

If the AC supply is interrupted and the batteries haven't been installed, the instrument goes off and
the measured data may be lost.

Alkaline dry-cell battery(LR6)

Slide the switch to the left ( DRY )

Ni-MH Rechargeable battery
(HR-15/51)

Slide the switch to the right
( RE-CHARGEABLE )

Battery Mark on the LCD / Battery Level

Powered by AC supply

Battery Mark on the LCD

Powered by Battery

*

0 ~ 100% (count by 20%)

Possible continuous measurement

100%

- approx 2 hours* : with alkaline batteries

Battery Level

- approx 5 hours

Battery is exhausted. (accuracy not guaranteed)
Instrument operates as follows automatically.

0%

*

: with Ni-MH rechargeable batteries

Mea sure men t co n tinu es, Da ta
save is ceased. (Measured data is
saved.)

Dat a sa v e ( m e a s u r e m e n t ) is
ceased.
(Measured data is saved.)

*

mark flashes while charging batteries.

A continuous measurement with alkaline batteries is limited to 1 hour; use of an ac power supply is
recommended. (batteries should be considered and used as a back-up)

*

reference time when using the instrument with indications on the LCD hide.

− 7 −

KEW6310

KEW6310 Charging the rechargeable Ni-MH batteries

Charging the rechargeable Ni-MH batteries

  Following message to prompt battery charge appears on the LCD automatically when battery level is

40% or less at starting the instrument. Press the
the instructions displayed on the LCD.

Install rechargeable batteries (Ni-MH)

・

Slide the Selector switch to the right (set to RE-CHARGEABLE position)

・

Connect the AC Power cord and power on the instrument.

・

  * Refer to (4.2.4.) Other Setting in the full instruction manual to initiate a battery charge anytime it is necessary.

Charge batteries?

Cursor Keys and ENTER Key according to

No

Return to normal screen.

(Batteries aren't charged.)

Rechargeable batteries are installed?

No

Return to normal screen.

(Batteries aren't charged.)

Battery charge doesn't initiate only by installing rechargeable batteries and connecting an AC power cord.
Above operation is required to start a battery charge.

Yes

Proceed to next screen

Yes

Battery charge starts; return to

normal screen.

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.

KEW6310

− 8 −

Cord Connection KEW6310

Cord Connection

Voltage Test Leads

Match the
arrow marks

Power Cord

Clamp Sensor

Rated supply voltage

Rated supply frequency

Max power consumption

100 ~ 240VAC (±10%)

：

45 ~ 65Hz

：

20VAmax

：

Start-up Screen

  Model name and software version will be displayed upon powering on the instrument, and self-check

routine initiates automatically. The KEW logo will appear. Stop using the instrument if error messages
appear on the LCD after the self-check and refer to (Section 15) Troubleshooting in the full instruction
manual.

− 9 −

KEW6310

KEW6310  Setting

４．Setting

The SET UP consists of following 4 settings.

Basic Setting : Setting of the items common to all measurements
Measurement Setting : Setting of each measurement
Save Setting : Setting of data save methods

Other Setting : Environmental setting

Press the Cursor Keys to browse through setting items.

Each setting

Select any desirable items with

ESC Key cancels the setting change. Following is an example to select the wiring to be tested at

basic setting.

1. Select a setting item
– Wiring

Move the cursor to Wiring,
and press the

  * Cursor will move onto any of the red parameters.

KEW6310

ENTER Key.

Cursor Keys and confirm it with ENTER Key. Using the

2. Select a proper wiring
configuration

Move the cursor to the wiring
configuration to be tested, and
press the

ENTER Key.

3. Confirm the selected
wiring configuration

Setting completes.

− 10 −

Basic Setting  KEW6310

Basic Setting

Setting item Details of Setting

①1P2W×1 ②1P2W×2 ③1P2W×3
④1P2W×4 ⑤1P3W×1 ⑥1P3W×2

Wiring

Voltage Range 150V╱
VT Ratio 0.01~9999.99（1.00 ）

Clamp / Current Range

CT Ratio 0.01~9999.99（ 1.00 ）

Filter

DC V 50mV╱500mV╱ 5V

Frequency

Wiring Configuration

⑦1P3W×1＋2A ⑧3P3W×1 ⑨3P3W×2
⑩3P3W×1+2A ⑪3P3W3A ⑫3P4W×1

⑬3P4W×1+1A

⓪4A

300V╱600V╱1000V

8128

1╱5╱10╱20╱50A╱AUTO

：

8127

10╱20╱50╱100A╱AUTO

：

8126

20╱50╱100╱200A╱AUTO

：

8125

50╱100╱



：

8124

100╱200╱500╱1000A╱AUTO

：

8129

300╱1000╱3000A

：

8141

：

8142
8143
8146
8147
8148

8141╱42╱43╱46╱47╱48
8128╱27╱26╱

50Hz╱60Hz

100╱500mA╱1A╱AUTO

：

｝

：
：

500mA╱1╱5╱10A╱AUTO

：

｝

：

* Default values are highlighted in gray
* Leakage Clamp sensors cannot be used for power measurements but can be used on

wiring configurations: ⑦, ⑩, ⑬ and ⓪.

200 ╱500A╱AUTO

ON╱OFF

：

25 ╱24╱29：--------

Power Clamp sensor



Leakage Clamp sensor

− 11 −

KEW6310

KEW6310  Basic Setting

Orientation of Clamp sensor

Power
Supply

Reverse clamping switches the symbols (+/-) for active power.

KEW6310

Load

Arrow mark:
Points towards load side

− 12 −

Measurement Setting  KEW6310

Measurement Setting

Setting Item Details of Setting

W Instantaneous/avg/max/min values

W╱Wh╱
DEMAND

WAVE

Range*

Harmonic
Analysis*

QUALITY

Wh Detailes

Target demand 1.000mW~999.9TW (

*

Demand inspection cycle

Transient

Flicker

V
A

V
A

V_Reference 70~1000V（

Transient

V_Reference 70~150V 151~300V 301~600V
Transient

(selectable range)

Swell 100~200% against reference voltage （110% ）
Dip 5~100% against reference voltage （ 90% ）
Int 5~98% against reference voltage （ 10% ）
Hysteresis 1~10% against reference voltage （
Trigger point Past:0~200, Next:200~0 （
Voltage range 150V 300V 600V

Threshold value
(selectable range)

Hysteresis 1~10% against Voltage Range （
Trigger point Past:0~200, Next:200~0 （

Clamp

A Range

Reference current
(selectable range)

Filter ON╱ OFF
Threshold value 100~200% against reference current （110% ）
Hysteresis 1~10% against reference current （
Data trigger point Past:0~200, Next:200~0 （ 100 each）

V Range 150V 300V 600V
Filter coefficient 230V lamp 120V lamp
Output item Pst（1min) ╱Pst╱Plt
Output Threshold 0.8~20.0 (1.0)

Save item

THD (total harmonic distortion) caluculation

Allowable range Default value ╱Customization
MAX HOLD ON╱OFF

Save item

Swell/ Dip/ Int

measurment

measurement

Inrush current
measurement

Unbalance ratio Output threshold 1~20%（ 3% ）

Capacitance Target power factor 0.5~1（ 1.000 ）

− 13 −

ON╱OFF

300.0kW )

Shorter than intervals, 3 different cycles are
available. （ 10 min ）

ON╱OFF

THD-F (fundamental wave basis)

THD-R (total RMS basis)

ON╱OFF

100V ）

Selectable ranges for threshold vary depending
on the selected reference voltages.

50~310
Vpeak(210)

50~310
Vpeak

8128╱8127╱8126╱
╱8146╱8147╱8148╱8141╱8142╱8143

100.0m╱500.0m╱1╱5╱10╱20╱50╱100
╱

200

Se lec tab le wit hin 10% ~10 0% of C urren t
Ranges （ 200A ）

* Default values are highlighted in gray .

90~630
Vpeak

90~630
Vpeak

╱300╱500╱1000╱3000╱AUTO

170~1270

Vpeak

170~1270
Vpeak

8125 ╱8124╱8129

/

601~1000V

340~2000

Vpeak

5% ）

100 each）

1000V

340~2000
Vpeak

（ 1415 ）

5% ）

100 each）

5% ）

KEW6310

KEW6310  Save / Other Setting

Measurement Setting

Setting Item Details of Setting

Interval

* Interval can be selected at W, Wh, DEMAND, WAVE, Harmonic analysis, Swell/ Dip/ Int, Transient, Inrush current,

Unbalance ratio and Capacitance Ranges. At WAVE Range and Harmonic analysis, available intervals depend on the
number of save items. At Harmonic analysis, 1 sec tool is not available.

Save Setting

1sec╱2sec╱5sec╱10sec╱15sec╱20sec╱30sec╱
1min╱2min╱5min╱10min╱15min╱20min╱ 30min ╱1hour

Setting Item Details of Setting

Recording method Manual ╱ Timer
Recording starts
Recording ends
Destination to save data
Destination to save screenshot

Formatting CF Card Format the CF Card.
Deleting data in the CF Card Delete the data in the CF Card.
Formatting internal memory Format the internal memory.
Deleting data in the internal memory Delete the data in the internal memory.
Data transfer Transfer the data in the internal memory to the CF Card.
Load setting Load the pre-set setting.
Save setting Save the settings to the CF Card or the internal memory.

Year / Month / Date Hour : Minute : Second

00 / 00 00 : 00 : 00)

(0000/

CF Card / Internal Memory

（ CF Card, if it has been inserted ）

Other Setting

Setting Item Details of Setting

Language* 日本語/ English / 中文 / Francais / Espanol
Date format YYYY/MM/DD ╱ MM/DD/YYYY ╱ DD/MM/YYYY
Time and date* yyyy/mm/dd hh:mm:ss
Buzzer ON╱OFF

Decimal point╱Separator

CSV File

ID number 00-001

LCD contrast

CH Color* Default value ╱ Customization

Auto-power-off
LCD auto-off
Battery charge
System reset

* Items listed with * mark won't restore to default after system reset.

KEW6310

． ╱   ，
  ． ╱  
  ， ╱

Light⇔

Standard ⇔Dark

10 ⇔ 0 ⇔ 10

ON╱OFF
ON╱OFF

ON╱OFF
Reset the system.

〜

；

99-999(

；

00-001 )

− 14 −

Instantaneous value measurement  KEW6310

５．Instantaneous (Inst) value measurement

Steps for measurement

    Ensuring your safety

       ↓

 Preparation for measurement

       ↓

      Setting

       ↓

      Wiring

       ↓

   Inst value measurement     

Symbol displayed on the LCD

V Voltage A Current P

＋ lagging

S

An

Apparent
Power

Neutral
current

Power

PF

Factor
Analogue input

DC1

voltage at 1ch

− leading − leading

Switching Screens / Zoom

Select a
system

Select an
item

Cursor Key

Cursor Key

Range

Basic Setting Measurement setting Save Setting
Wiring
V Range Save item (W) Recording start
VT Ratio
Clamp Sensor・Avg value Destination to save data
A Range
CT Ratio
Filter
DC V
Frequency

PA

DC2

Interval Recording method

Inst value Recording termination

・

Max value

・

Min value

・

Range

Active
Power

Phase
Angle

Analogue input
voltage at 2ch

＋ consumption

− regenerating − leading
＋ lagging

Measured
values
per CH

Total
measured
values

List Zoom

Q

f Frequency

Destination to save screen shot

Reactive
Power

＋ lagging

Check
setting
details

* Press
Re fe r to  (Section 6) Instantaneous (I ns t) value

ENTER Key

Key to switch the Zoom and List display.

F3

measurement for explanation on customizing the Zoom
display.

Save data

File ID : 6310-01

Saved time & date ELAPSED TIME Instantaneous Average Max Min

DATE

yyyy/mm/dd h：mm：ss h：mm：ss (±)x.xxxE±nn

year/month/ date hour:min:sec hour:min:sec (±) value x 10

TIME ELAPSED TIME INST AVG MAX MIN

e.g. 1.234E+02=1.234x102=123.4

− 15 −

±n

KEW6310

KEW6310  Instantaneous value measurement

Header of the saved data

A V G _ A 1 [ A ] _ 1

︸     ︸ ︸  ︸    
   ①    ② ③  ④    ⑤

︸

* Saved data with no number at this space contains the sum of the measured values.

INST

①

AVG
MAX
MIN
V

②

A
f
P
Q
S
PF
PA
DC

③ CH number
④ Unit
⑤ System

Instantaneous value

：

Average value

：

Max value

：

Min value

：

Voltage per phase

：

Current per phase

：

Frequency

：

Active power

：

Reactive power

：

Apparent power

：

Power factor

：

Phase angle

：

Analogue input voltage

：

 * 1

：

4

〜

Saving instantaneous values

Start → Next → Next → Complete

Press

１

Press the

Start

２ Preset start time comes.

Saving

Start Button at least 2 sec to start recording immediately.

≪Manual≫ ≪Timer≫

Data saving starts.

(flashes in red according to the preset interval)

to start recording after checking the
settings.

File name for saving data is displayed.

▼

Status indicator LED flashes.

Stand-by until preset time comes.

▼    

Status indicator LED is ON.

flashes and or is displayed.

▼

appears and flashes

▼

▼

No setting change can be made during data saving.

３ ▼ ▼

Press Stop . Preset termination time comes.

Stop

KEW6310

File name for saving data is displayed.

Status indicator LED goes off.

− 16 −

▼    

and or goes off.

Integration value measurement  KEW6310

６．Integration value measurement

Steps for measurement

    Ensuring your safety

        ↓

  Preparation for measurement

        ↓

       Setting

        ↓

       Wiring

        ↓

  Integration value measurement   Range

* Readings are displayed right after the recording of integration value measurement starts.

Active electric energy

WP+

WP-

(consumption)

Active electric energy

(regenerating)

Basic Setting Measurement setting Save Setting
Wiring
V Range Save item (Wh) Recording start
VT Ratio
Clamp Sensor・Avg value Destination to save data
A Range
CT Ratio
Filter
DC V

Frequency

Symbol displayed on the LCD

Apparent electric energy

WS+

WS-

(consumption)

Apparent electric energy

(regenerating)

Interval Recording method

Inst value Recording termination

・

Max value

・

Min value

・

Details

・

WQi+

WQc+

Switching displays / Viewing W Range

Select
a system

Cursor Key

Range

Destination to save screen shot

Reactive electric energy

(lagging)

Reactive electric energy

(leading)

Select
a channel

Cursor Key

* Press

Range.

Display for

Wh Range

F2

Key to switch on the displays for Wh Range and W

Display for

W Range

Save data

File ID : 6310-02

Saved time & date ELAPSED TIME

DATE TIME ELAPSED TIME INTEG_WP INTEG_WS INTEG_WQ

yyyy/mm/dd h：mm：ss h：mm：ss (±)x.xxxxxE±nn

year/month/ date hour:min:sec hour:min:sec (±) value x 10

* Reactive power (consumption :+ / regenerating :- ) will be recorded with phase information: lagging (i) or leading (c).
* At Wh Range, data measured at W Range and above measurement data are recorded at the same time.

Active Power energy

(consumption /

regenerating )

− 17 −

Apparent Power energy

(consumption /

regenerating )

±n

Reactive Power energy

(consumption /

regenerating )

KEW6310

KEW6310  Integration value measurement

.

Header of the saved data

INTEG_WP+[Wh]_1

    ①      ②    ③    ④

     ︸    ︸    

︸

︸

① INTEG

WP+

②

WP­WS+
WS-

WQi+

WQc+

WQi-

WQc-

③ Unit
④ System

Integration value

：

Active power energy (consumption)

：

Active power energy (regenerating)

：

Apparent power energy (consumption)

：

Apparent power energy (regenerating)

：

Reactive power energy

：

(consumption) : lagging
Reactive power energy

：

(consumption) : leading
Reactive power energy

：

(regenerating): lagging
Reactive power energy

：

(regenerating): leading

Saving integration values

Press

１

Press the

Start

２

Saving

Start → Next → Next → Complete

Start Button at least 2 sec to start recording immediately.

≪Manual≫ ≪Timer≫

File name for saving data is displayed.

▼

Data saving starts.

(flashes in red according to the preset interval)

to start recording after checking the
settings.

▼

appears and flashes

Status indicator LED flashes.

▼

Stand-by until preset time comes.

▼

Preset start time comes.

▼    

Status indicator LED is ON.

flashes and or is displayed.

３

Stop

KEW6310

No setting change can be made during data saving.

▼

Press Stop .

File name for saving data is displayed.

Status indicator LED goes off.

Preset termination time comes.

▼    

and or goes off.

▼

− 18 −

Demand measurement   KEW6310

７．Demand measurement

Steps for measurement

   Ensuring your safety

        ↓

 Preparation for measurement

        ↓

       Setting

        ↓

       Wiring

        ↓

    Demand measurement     

* Readings are displayed right after the recording of demand measurement starts.

Basic Setting Measurement setting Save Setting
Wiring
V Range Save item (W) Recording start
VT Ratio
Clamp Sensor・Avg value Destination to save data
A Range
CT Ratio
Filter
DC V Target demand

Frequency

Interval Recording method

Inst value Recording termination

・

Max value

・

Min value

・

Details

・

Demand inspection
cycle

Range

Range

Destination to save screen shot

Switching displays / Viewing W Range and Wh Range

Switching

screens

Cursor Key

Display for

* Press

Range.

DEMAND

F2

Key to switch the displays for DEMAND, Wh Range and W

Display for

W Range

Save data

Display for

Wh Range

File ID : 6310-03

Saved time & date

DATE

yyyy/mm/dd h:mm:ss h:mm:ss (±)x.xxxxxE±nn (±)x.xxxE±nn

year/month/ date hour:min:sec hour:min:sec

* At DEMAND Range, data measured at W Range and above measurement data are recorded at the same time.

TIME

ELAPSED

TIME

ELAPSED

TIME

Integration

Variation

interval

Active power

energy

(consumption/

regenerating)

INTEG_WP INTEG_WS INTEG_WQ

in

INTVL_WP INTVL_WS INTVL_WQ

− 19 −

Apparent

power energy

(consumption/

regenerating)

(±) value x 10

Reactive

power energy

(consumption/

regenerating)

±n

DEMAND

DEM TARGET

KEW6310

TARGET

KEW6310  Demand measurement

Header of the saved data

INTVL_WP+[Wh]_1

    ①      ②    ③    ④

    ︸    ︸    

︸

︸

INTEG

①

INTVL
DEM
TARGET
WP+
WP­WS+

②

WS-

WQi+

WQc+

WQi-

WQc-

③ Unit
④ System

* ②,③,④ will be blank if ① is DEM or TARGET.

Integration value

：

Variation in interval

：

Sum of demand value

：

Target value

：

Active power energy (consumption)

：

Active power energy (regenerating)

：

Apparent power energy (consumption)

：

Apparent power energy (regenerating)

：

Reactive power energy

：

(consumption) : lagging
Reactive power energy

：

(consumption) : leading
Reactive power energy

：

(regenerating): lagging
Reactive power energy

：

(regenerating): leading

Saving of demand values

Start → Next → Next → Complete

Press

１

Press the

Start

２ Preset start time comes.

Saving

Start Button at least 2 sec to start recording immediately.

≪Manual≫ ≪Timer≫

Data saving starts.

(flashes in red according to the preset interval)

to start recording after checking the
settings.

File name for saving data is displayed.

▼

Status indicator LED flashes.

Stand-by until preset time comes.

▼    

Status indicator LED is ON.

flashes and or is displayed.

▼

appears and flashes.

▼

▼

３

Stop

KEW6310

No setting change can be made during data saving.

▼

Press Stop .

File name for saving data is displayed.

Status indicator LED goes off.

Preset termination time comes.

▼    

and or goes off.

▼

− 20 −

Demand measurement  KEW6310

Measurement Screen

Remaining time (Time left)

Demand interval is counted down.

Predicted value

Pr edi cte d d eman d v alu e w hen pre set
demand interval elapses under present load.

（Present value) × (preset interval)

(elapsed time)

* Integrati on and ca lculations are

done as time elapses.

Measured max demand with time & date
information

Max demand recorded in a measuring period is
displayed. Displayed value will be refreshed if
any higher demand is detected.

Shifts in specific period

Remaining time (Time left)

Demand interval is counted down.

Load factor

Percentage of the present value
against the target value.

(present value)
   (target value)

Prediction

Percentage of the predicted value against the target value.

Arrow mark on the graph (▲) is blue while the value is within the
target demand, and becomes red when the target value is exceeded.

Target value

Should be s e t fo r
each measurement.

Present value

Demand value (average power) within a demand
interval.

(WP+)×(1 hour)

(interval) 

* Integration and calculations are done as time elapses.

(predicted value)

(target value)

Target value

Digital output signal
warns when the
predicted value
exceeds the target
value.

− 21 −

Predicted value

Target value

Demand value
(present value)

KEW6310

KEW6310  Demand measurement

Demand change

Measured max demand with
time & date information

De mand value is dis playe d
with recorded time & date info
where cursor is placed.

Target demand

Bar graph

White bar : Percentage of
hidden area
Blue bar: Percentage of the
present displayed area

Cursor

Use the
to move the cursors.

Cursor Key

Recording start time

Target
value

Demand start

Most recent recorded time

Max demand value

( d i s pl a y e d o n t h e
measurement screen)

Demand value

(Elapsed time)

Demand termination

KEW6310

− 22 −

WAVE Range  KEW6310

８．WAVE Range

Steps for measurement

    Ensuring your safety

       ↓

  Preparation for measurement

       ↓

      Setting

       ↓

       Wiring

       ↓

     Measurement Range

Basic Setting Measurement setting Save Setting
Wiring Interval Recording method
V Range Save item Recording start
VT Ratio Recording termination
Clamp Sensor Destination to save data
A Range Destination to save screen shot
CT Ratio
Filter
DC V
Frequency

Symbol displayed on the LCD

V Voltage A Current

Range

Switching displays : Vector / Waveform (switching CH)

Switching CH

Vector Display

* Press the
 * Press the
 * Pressing the

F3
F2

Key to switch the Waveform and Vector display.
Key to check whether the wiring configuration is correct or not.

F1

F2

or

Keys at Waveform display changes the magnification of vertical axis (voltage/current).

Waveform Display

Cursor Key

Save data

File ID : 6310-04 (Waveform data)

Saved time & date ELAPSED TIME Channel Instantaneous value

DATE

yyyy/mm/dd h：mm：ss h：mm：ss Ai╱Vi (±)x.xxxE±nn

year/month/ date hour:min:sec hour:min:sec A ╱ V (±) value x 10

*1st ~ 128th measured instantaneous values are saved to Line 1, 129th ~ 256th are to Line 2.

Saved time & date ELAPSED TIME Instantaneous Average Max Min

DATE

yyyy/mm/dd h：mm：ss h：mm：ss (±)x.xxxE±nn

year/month/ date hour:min:sec hour:min:sec (±) value x 10

TIME ELAPSED TIME CH * Line 1/Line 2 1╱128

File ID : 6310-05 (Vector data)

TIME ELAPSED TIME INST AVG MAX MIN

±n

− 23 −

129╱256

〜

±n

KEW6310

KEW6310  WAVE Range

Header of the saved data

 File ID : 6310-04 (Waveform data)

︸ ︸ 

︸

5/133

︸  ︸ 
   ①   ②

 File ID : 6310-05 (Vector data)

INST_A1[deg]

︸

   ①    ② ③  ④

① 1〜128

② 129〜256

INST

①

AVG
MAX
MIN
V

②

A

③ CH No.
④ Unit

* when [deg] is displayed at space ④, it means phase angle

Sampling sequence

：

ditto (① + 128)

：

Instantaneous value

：

Average value

：

Max value

：

Min value

：

Voltage per phase

：

Current per phase

：
：1〜

4

Saving at WAVE Range

to start recording after checking the
settings.

File name for saving data is displayed

▼

Status indicator LED flashes.

Stand-by until preset time comes.

▼

appears and flashes.

▼

▼

１

Start

Start → Next → Next → Complete

Press

Press the

Start Button at least 2 sec to start recording immediately.

≪Manual≫ ≪Timer≫

Data saving starts.

２ Preset start time comes.

▼   

Saving

３

Stop

KEW6310

(flashes in red according to the preset interval)

No setting change can be made during data saving.

Press Stop .

− 24 −

Status indicator LED is ON.

flashes and or is displayed.

▼

Preset termination time comes.

▼    

File name for saving data is displayed.

Status indicator LED goes off.

and or goes off.

▼

Harmonic Analysis  KEW6310

９．Harmonic Analysis

Steps for measurement

   Ensuring your safety

        ↓

  Preparation for measurement

        ↓

      Setting

        ↓

       Wiring

        ↓

    Harmonic Analysis   Range

Basic Setting
Wiring Interval Recording method
V Range THD calculation Recording start
VT Ratio Allowable range Recording termination
Clamp Sensor MAX HOLD Destination to save data
A Range Save item Destination to save screen shot
CT Ratio
Filter
DC V
Frequency

Measurement setting

Switching displays

Switching CH

Cursor Key

Range

Save Setting

Graph

① Measured value

TOTAL

1〜63 Harmonic order V╱A RMS %

sum V╱A RMS value per CH % THD per CH

② Measured value (values of each order pointed by cursor)

− 25 −

Percentage of
the fundamental
wave (1st)

° Phase angle

KEW6310

KEW6310    Harmonic Analysis

Save data

File ID : 6310-06

Saved time & date ELAPSED TIME Channel RMS Total THD Inst at each order

± n

〜

1_[deg]

63_[deg]

DATE TIME ELAPSED TIME CH TOTAL THD

yyyy/mm/dd h:mm:ss h:mm:ss Vi／Ai ( ± )x.xxxxE ± nn

year/month/ date hour:min:sec hour:min:sec V ／ A ( ± ) value x 10

1_[V/A]

63_[V/A]

Header of the saved data

    ①    ② 

1_[V/A]

  ︸   

︸

① 1〜63

V/A

②

deg

Order

：

Voltage / Current

：

Phase angle

：

Saving Harmonic analysis results

〜

Start → Next → Next → Complete

Press

１

Press the

Start

２ Preset start time comes.

Saving

３

Stop

Start Button at least 2 sec to start recording immediately.

Data saving starts.

to start recording after checking the
settings.

≪Manual≫ ≪Timer≫

File name for saving data is displayed.

▼

Status indicator LED flashes.

Stand-by until preset time comes.

▼    

Status indicator LED is ON.

flashes and or is displayed.

(flashes in red according to the preset interval)

No setting change can be made during data saving.

▼

Press Stop .

File name for saving data is displayed.

Status indicator LED goes off.

Preset termination time comes.

▼    

and or goes off.

▼

appears and flashes.

▼

▼

▼

KEW6310

− 26 −

Swell / Dip / Int measurement  KEW6310

10．Power Quality

Swell / Dip / Int measurement

Steps for measurement

Ensuring your safety
        ↓
  Preparation for measurement
        ↓
       Setting
        ↓
       Wiring
        ↓
  Swell / Dip / Int Measurement

 * Readings are displayed right after the recording of swell/ dip/ int measurement starts.

Measurement setting Save Setting
Swell / Dip / Int Measurement Recording method
Interval Recording start
Reference voltage Recording termination
Transient
Swell Destination to save screen shot
Dip
Int
Hysteresis
Trigger point

Range

Timing of data recording

Measured data will be saved when an event occur or at the preset interval during measurement.

Recording at event occurrence Recording at every interval

File ID：6310-07 File ID：6310-13

Range

Destination to save data

Swell 110％

Setting
Example

Inst value : Avg of 100 data (@50Hz) obtained 1 sec before the preset interval comes (rms)
Avg value : Avg of rms values obtained in the preset inst interval
Max value : Max rms values obtained in the preset inst interval
Min value : Min rms values obtained in the preset inst interval

Hysteresis 1％

Trigger point

Before: 100
After: 100

Setting
Example

Interval 30min

Save data

File ID : 6310-07

Saved time & date Item Start / End

DATE

yyyy/mm/dd h：mm：ss.ss SWELL DIP INT 1 0 1╱0

year/ month/ date hour:min:sec swell dip short-interruption start end Start to end

TIME ITEM* I╱O

− 27 −

KEW6310

KEW6310  Swell / Dip / Int measurement

Start to End

Start

End

Swell

(Red)

Dip

(Blue)

Int

(Yellow)

Transient

(Green)

Duration Max / Min Data

DURATION

--：--：--.-- h
start

Saved time & date

DATE

yyyy/mm/dd h:mm:ss

year/month/ date hour:min:sec

：ｍｍ：

end max(Swell) min(Dip/Int) (±) value x 10

TIME

ss.ss (±)x.xxxE±nn

File ID : 6310-13

ELAPSED TIME Instantaneous Average Max Min
ELAPSED TIME INST AVG MAX MIN

h:mm:ss (±)x.xxxE±nn

hour:min:sec (±) value x 10

MAX/MIN 201

±n

Header of the saved data

50



            ①

e.g. Trigger point is set to Past: 50 / Next: 150.

〜

1_1

〜

150

① 201 data in total

Data No.

：

Saving Swell / Dip / Int

Start → Next → Next → Complete

Press

１

Press the Start Button at least 2 sec to start recording immediately.

Start

２ Preset start time comes.

Saving

Data saving starts.

to start recording after checking the settings.

≪Manual≫ ≪Timer≫

File name for saving data is displayed.

▼

Status indicator LED flashes.

Stand-by until preset time comes.

▼    

Status indicator LED is ON.

flashes and or is displayed.

▼

appears and flashes.

▼

▼

±10

３

Stop

KEW6310

No setting change can be made during data saving.

▼

Press Stop .

File name for saving data is displayed.

Status indicator LED goes off.

Preset termination time comes.

▼    

and or goes off.

▼

− 28 −

Transient measurement  KEW6310

Interval（30min) 

Interval

(reference

Voltage)

Past100
date pts

201date pts

recorded

Tr

igger

Start

Peak(max)

Ave, max and min* values within

each interval are recorded

. 

Past100
date pts

Threshold
110

％

100

％

Transient measurement

Steps for measurement

   Ensuring your safety

        ↓

  Preparation for measurement

        ↓

      Setting

        ↓

       Wiring

Measurement setting
Transient measurement Recording method
Interval Recording start
V Range Recording termination
Threshold value
Hysteresis Destination to save screen shot
Trigger point

        ↓

   Transient Measurement       Range

* Readings are displayed right after the recording of Transient measurement starts.

Timing of data recording

Measured data will be saved when an event occur or at the preset interval during measurement.

Recording at event occurrence Recording at every interval

File ID：6310-08 File ID：6310-14

Range

Save Setting

Destination to save data

Threshold Value 110％

Setting
Example

Inst value : max value of 10,000 data obtained at 100us 1sec before the preset interval comes
Avg value : Avg of inst values obtained in the preset inst interval
Max value : Max inst values obtained in the preset inst interval
Min value : Min inst values obtained in the preset inst interval

Hysteresis 1％

Trigger point

Before: 100
After: 100

Setting
Example

− 29 −

Interval 30min

KEW6310

KEW6310  Transient measurement

Save data

File ID : 6310-08

Saved time & date Max Data

DATE

yyyy/mm/dd h：mm：ss.ss (±)x.xxxE±nn

year/month/ date hour:min:sec Max (Peak) (±) value x 10

Saved time & date ELAPSED TIME Instantaneous Average Max Min

DATE

yyyy/mm/dd h:mm:ss h:mm:ss (±)x.xxxE±nn

year/month/ date hour:min:sec hour:min:sec (±) value x 10

TIME MAX 201 data

File ID : 6310-14

TIME ELAPSED TIME INST AVG MAX MIN

±n

Header of the saved data

±n

50



            ①

e.g. Trigger point is set to Past: 50 / Next: 150.

〜

1_1

〜

150

① 201 data in total

Data No.

：

Saving Transient Measurement

Start → Next → Next → Complete

Press

１

Press the

Start

２ Preset start time comes.

Saving

３

Stop

Start Button at least 2 sec to start recording immediately.

Data saving starts.

to start recording after checking the
settings.

≪Manual≫ ≪Timer≫

File name for saving data is displayed.

▼

Status indicator LED flashes.

Stand-by until preset time comes.

▼    

Status indicator LED is ON.

flashes and or is displayed.

No setting change can be made during data saving.

▼

Press Stop .

File name for saving data is displayed.

Status indicator LED goes off.

Preset termination time comes.

▼    

and or goes off.

▼

appears and flashes.

▼

▼

▼

KEW6310

− 30 −

Inrush Current Measurement  KEW6310

Inrush Current Measurement

Steps for measurement

    Ensuring your safety

        ↓

  Preparation for measurement

        ↓

      Setting

        ↓

       Wiring

        ↓

  Inrush Current Measurement      Range

* Readings are displayed right after the inrush current measurement starts.

Measurement setting
Inrush Current Measurement Recording method
Interval Recording start
Clamp sensor Recording termination
A Range Destination to save data
Reference current Destination to save screen shot
Filter
Threshold value
Hysteresis
Trigger point

Timing of data recording

Measured data will be saved when an event occur or at the preset interval during measurement.

Recording at event occurrence Recording at every interval

File ID：6310-09 File ID：6310-15

Range

Save Setting

Reference current 100A

Setting
Example

Inst value : Avg of 100 data (@50Hz) obtained 1 sec before the preset interval comes (rms)
Avg value : Avg of rms values obtained in the preset inst interval
Max value : Max rms values obtained in the preset inst interval
Min value : Min rms values obtained in the preset inst interval

Threshold value 110%
Hysteresis 1%

Trigger point

Before: 100
After: 100

Setting
Example

− 31 −

Interval 30min

KEW6310

KEW6310  Inrush Current Measurement

Save data

File ID : 6310-09

Saved time & date Start / End Duration Max / Min Data

DATE TIME I╱O DURATION MAX/MIN 201 data

yyyy/mm/dd h:mm:ss.ss 1 0 1╱0 -：--：--.-- h:mm:ss.ss (±)x.xxxE±nn

year/month/ date hour:min:sec Start End Start to End Start End Max / Min (±) value x 10

File ID : 6310-15

Saved time & date ELAPSED TIME Instantaneous Avarage Max Min

DATE

yyyy/mm/dd h:mm:ss h:mm:ss (±)x.xxxE±nn

year/month/ date hour:min:sec hour:min:sec (±) value x 10±n

TIME ELAPSED TIME INST AVG MAX MIN

Header of the saved data

50



           ①

e.g. Trigger point is set to Past: 50 / Next: 150.

〜

1_1

〜

150

① 201 data in total

Data No.

：

Saving Inrush Current Measurement

Start → Next → Next → Complete

Press

１

Press the

Start

２ Preset start time comes.

Saving

Start Button at least 2 sec to start recording immediately.

Data saving starts.

to start recording after checking the
settings.

≪Manual≫ ≪Timer≫

File name for saving data is displayed.

▼

Status indicator LED flashes.

Stand-by until preset time comes.

▼    

Status indicator LED is ON.

flashes and or is displayed.

▼

appears and flashes.

▼

▼

±n

３

Stop

KEW6310

No setting change can be made during data saving.

▼

Press Stop .

File name for saving data is displayed.

Status indicator LED goes off.

Preset termination time comes.

▼    

and or goes off.

▼

− 32 −

Unbalance Ratio  KEW6310

Unbalance Ratio

Steps for measurement

   Ensuring your safety

        ↓

  Preparation for measurement

        ↓

      Setting

        ↓

       Wiring

   Unbalance Ratio   

V Voltage A Current P

Apparent

S

Power
Neutral

An

current

 * Measurements can be made with any of wiring configurations: ⑪, ⑫, ⑬.

↓

Symbol displayed on the LCD

＋ lagging

Power

PF

Factor

− leading

Analogue input

DC1

Voltage at 1ch

Basic Setting
Wiring
V Range Interval Recording start
VT Ratio Output threshold Recording termination
Clamp Destination to save data
A Range Destination to save screen shot
CT Ratio
Filter
DC V
Frequency

PA

DC2

Measurement setting

Unbalance Ratio Recording method

Range

Active
Power

Phase angle f Frequency

Analogue input
Voltage at 2ch

＋ consumption

− regenerating − leading

Range

Q

Save Setting

Reactive
Power

＋ lagging

Switching displays / Viewing Vector W Range display

Select a system

Select an item

Vector Display

Press the F2 Key to switch the Vector and W Range displays.

W Range Display

Save data

File ID : 6310-10

Saved time & date ELAPSED TIME Instantaneous Average Max Min

DATE

yyyy/mm/dd h：mm：ss h：mm：ss (±)x.xxxE±nn

year/month/ date hour:min:sec hour:min:sec (±) value x 10

TIME ELAPSED TIME INST AVG MAX MIN

− 33 −

±n

Cursor Key

Cursor Key

KEW6310

KEW6310  Unbalance Ratio

Header of the saved data

AVG_A1[A]_1

︸    ︸ ︸ 
    ①   ② ③ ④   ⑤

        *Saved data with no number at this space contains the sum of the measured values.

︸  ︸

① INST

AVG
MAX
MIN
UV

②

UA
V
A
f
P
Q
S
PF
PA
DC

③ CH number
④ Unit
⑤ System

Instantaneous value

：

Average value

：

Max value

：

Min value

：

Voltage unbalance ratio

：

Current unbalance ratio

：

Voltage of each phase

：

Current of each phase

：

Frequency

：

Active power

：

Reactive power

：

Apparent power

：

Power factor

：

Phase angle

：

Analogue input voltage

：
：*1〜

4

Saving PFC calculation results

Start → Next → Next → Complete

Press

１

Press the

Start

２ Preset start time comes.

Saving

Start Button at least 2 sec to start recording immediately.

Data saving starts.

to start recording after checking the
settings.

≪Manual≫ ≪Timer≫

File name for saving data is displayed.

▼

Status indicator LED flashes.

Stand-by until preset time comes.

▼     

Status indicator LED is ON.

flashes and or is displayed.

(flashes in red according to the preset interval)

▼

appears and flashes.

▼

▼

３

Stop

KEW6310

No setting change can be made during data saving.

▼

Press Stop .

File name for saving data is displayed.

Status indicator LED goes off.

Preset termination time comes.

▼   

and or goes off.

▼

− 34 −

− 35 −

KEW6310

Flicker  KEW6310

Flicker

* An optional voltage sensor KEW8325F is required for Flicker measurement.

Steps for measurement

   Ensuring your safety

        ↓

  Preparation for measurement

        ↓

      Setting

        ↓

       Wiring

   Flicker   

 * Preliminary measurement (for 10 sec) will be done automatically prior to Flicker measurement.

↓

Measurement setting

Flicker Recording method

V Range Recording start

Filter Recording termination

Output item Destination to save data

Output Threshold Destination to save screen shot

Range

Range

Save Setting

Save data

File ID : 6310-12

Saved time & date

DATE

yyyy/mm/dd

year/month/ date

* Data is saved at every 1 min, but Pst is saved at every 10 min and Plt is at every 10 min in 2 hours later.

TIME

h:mm:ss h:mm:ss

hour:min:sec hour:min:sec

ELAPSED

TIME

ELAPSED

TIME

Frequency

f AVG_V MAX_V MIN_V

(±)x.xxxE±nn

Voltage

Average

Max Min

(±)x.xxxxxE±nn (±)x.xxxE±nn

(±) value x 10

Short time

intensity

(for 1 min)

Pst

(1min)

±n

Short time

intensity

Pst Plt

Long time

intensity

Saving Flicker data

The saving procedure is same to the one for the other measurements. See the previous corresponding
pages.

− 36 −

KEW6310

KEW6310  Flicker

V

Pst

(1min)

Plt

Capacitance Calculation 

KEW6310

Capacitance Calculation -

Sizing of capacitor banks for Power factor correction (PFC)

Steps for measurement

    Ensuring your safety

        ↓

  Preparation for measurement

        ↓

      Setting

        ↓

       Wiring

        ↓

   Capacitance calculation       Range

V Voltage A Current P

＋ lagging

Power
Factor

− leading

Analogue input
Voltage at 1ch

S

An

Apparent
Power

Neutral
current

PF

DC1

Basic Setting
Wiring Capacitance Recording method
V Range Interval Recording start
VT Ratio Target power factor Recording termination
Clamp sensor Destination to save data
A Range
CT Ratio
Filter
DC V
Frequency

Symbol displayed on the LCD

Active
Power

C Capacitance f Frequency

Analogue input

DC2

Voltage at 2ch

Switching displays / Zoom

Select a
system

Select
an item

Cursor Key

Cursor Key

Total

measured

values

Measured

values

per CH

* Press

to (Section 6) Instanta neous mea sureme nt f or an
explanation on customizing the Zoom display.

Range

Measurement setting

＋ consumption

− regenerating − leading

List Zoom

F3

Key to switch on the Zoom and List display. Refer

Q

Save Setting

Destination to save screen shot

Reactive
Power

＋ lagging

Save data

File ID : 6310-11

Saved time & date ELAPSED TIME Instantaneous Average Max Min

DATE

yyyy/mm/dd h：mm：ss h：mm：ss (±)x.xxxE±nn

year/month/ date hour:minute:second hour:minute:second (±) value x 10

TIME ELAPSED TIME INST AVG MAX MIN

− 37 −

±n

KEW6310

KEW6310  Capacitance Calculation

Header of the saved data

INST

AVG_A1[A]_1

︸    ︸ ︸ 
    ①   ② ③ ④   ⑤

         * Saved data with no number at this space contains the sum of the measured values.

︸  ︸

①

AVG
MAX
MIN
V

②

A
f
P
Q
S
PF
C
DC

③ CH number * 1〜4
④ Unit
⑤ System

Instantaneous value

：

Average value

：

Max value

：

Min value

：

Voltage of each phase

：

Current of each phase

：

Frequency

：

Active power

：

Reactive power

：

Apparent power

：

Power factor

：

Capacitance

：

Analogue input voltage

：

Saving PFC calculation results

Start → Next → Next → Complete

Press

１

Press the

Start

２ Preset start time comes.

Saving

Start Button at least 2 sec to start recording immediately.

Data saving starts.

to start recording after checking the
settings.

≪Manual≫ ≪Timer≫

File name for saving data is displayed.

▼

Status indicator LED flashes.

Stand-by until preset time comes.

▼     

Status indicator LED is ON.

flashes and or is displayed.

(flashes in red according to the preset interval)

▼

appears and flashes.

▼

▼

３

Stop

KEW6310

No setting change can be made during data saving.

▼

Press Stop .

File name for saving data is displayed.

Status indicator LED goes off.

Preset termination time comes.

▼   

and or goes off.

▼

− 38 −

CF Card / Saved data KEW6310

11．CF Card / Saved data

CF Card

SanDisk Corp.* SDCFB-32 SDCFB-64 SDCFB-128 SDCFB-256 SDCFB-512 SDCFG-1

Adtec co., Ltd. AD-CFG32 AD-CFG64 AD-CFG128 AD-CFG256 -----

BUFFALO INC. - - - - - - ----

* CF Card with more or less capacity other than listed above cannot be used with this instrument.
  * Company name and model name are the trademark or the registered trademark.

A CF Card may not operate properly even if any of the following cards are used due to manufacture's specification change, etc.

   Please be aware above issue when purchasing commercially available CF Cards. We can offer following CF Cards

(proper operation has been verified) as optional parts. Please feel free to inquire.

Max number of saved data / Possible recoding time

Instantaneous value
measurement

Integration value
Measurement

DEMAND measurement

WAVE Range

Harmonic anaysis

Swell / Dip / Int measurement*1

Transient measurement*1

Inrush Current measurement*1

Unbalance Ratio

Flicker*1 1min 7M 1Y Over 1Y Over 1Y Over 1Y Over 1Y 1D

Capacitance

Max number of file

*In case that no file exist in the CF card or the Internal memory.

*1 Assumed one event occur per minute and calculated.

(operation check has completed)

Capacity 32MB 64MB

Destination to save data CF Card

Caiacity 32MB 64MB 128MB 256MB 512MB 1GB 1.8MB

1sec 15H 1Ｄ 2D 5D 10D 20D 7min
1min 10D 20D 1M 2M 5M 10M 2H

30min 10M 1Y Over 1Y Over 1Y Over 1Y Over 1Y 2D

1sec 6H 13H 1D 2D 4D 8D 3min
1min 7D 15D 1M 2M 4M 8M 1H

30min 7M 1Y Over 1Y Over 1Y Over 1Y Over 1Y 1D

1sec 4H 8H 17H 1D 2D 5D 2min

1min 6D 12D 24D 1M 3M 6M 1H
30min 6M 1Y Over 1Y Over 1Y Over 1Y Over 1Y 1D
10sec 1D 3D 7D 14D 28D 1M 20min

1min 10D 21D 1M 2M 5M 11M 2H
30min 10M 1Y Over 1Y Over 1Y Over 1Y Over 1Y 2D
15sec 3D 7D 15D 1M 2M 4M 44min

1min 15D 1M 2M 4M 8M 1Y 2H
30min 1Y Over 1Y Over 1Y Over 1Y Over 1Y Over 1Y 3D

1sec 2D 5D 11D 22D 1M 2M 32min

1min 5M 11M 1Y Over 1Y Over 1Y Over 1Y 1D
30min Over 1Y Over 1Y Over 1Y Over 1Y Over 1Y Over 1Y 1M

1sec 3D 6D 12D 24D 1M 3M 35min

1min 6M 1Y Over 1Y Over 1Y Over 1Y Over 1Y 1D
30min Over 1Y Over 1Y Over 1Y Over 1Y Over 1Y Over 1Y 1M

1sec 2D 5D 11D 22D 1M 2M 32min

1min 5M 11M 1Y Over 1Y Over 1Y Over 1Y 1D
30min Over 1Y Over 1Y Over 1Y Over 1Y Over 1Y Over 1Y 1M

1sec 21H 1D 3D 7D 14D 27D 10min

1min 14D 29D 1M 3M 7M 1Y 2H
30min 1Y Over 1Y Over 1Y Over 1Y Over 1Y Over 1Y 3D

1sec 15H 1D 2D 5D 10D 19D 7min

1min 10D 20D 1M 2M 5M 10M 1H
30min 10M 1Y Over 1Y Over 1Y Over 1Y Over 1Y 2D

Measurement data file (CSV)
Graphics file (BMP)
Configuration file (KAS)

where : H= hour(s), D=day(s), M=month(s), Y=year(s)

Numbers and time listed above are the minimum ones.

128MB

RCF-X128MY

256MB 512MB 1GB

RCF-X256MY - - - - - RCF-X1GY

− 39 −

512

AD-CFX
40T1G

Internal

Memory

KEW6310

6
7

20

KEW6310 Data transfer

Data transfer

Data in the CF card or internal memory can be transferred to a PC via USB connection or CF card



reader.

Transfer to PC via:

USB Card reader

CF card data (file) △*

Internal memory data (file)

  *1  It is reccomended to transfer the data with big size by a use of CF card reader since trasfer of such data via

USB takes time. (transfer time : approx 4MB/ hour)

  *2  Data in the internal memory can be tranferred to a CF card.

* As to the manipulation of the CF card, please refer to the instruction manual attached to the card.
 * In order to save the data without any problem, make sure to delete the file other than the data

measured with this instrument in the CF card.

Intemal memory data

1

○

○ --------*

2

CF card data

Intemal memory data

File format and name

Measurement data

File Name ：01 − CF 001 .CSV
       ①  ② ③  ④

CF card data *

① Measuring

Items

1

01

Data measured at W Range

：

02

Data measured at Wh Range

：

03

Data measured at DEMAND Range

：

04

Waveform data

：

05

Vector data

：

06：Harmonic data
07：Swell / Dip / Int data
08

Transient data

：

09

Inrush current data

：

10：Unbalance ratio
11： Capacitance
12： Flicker date
13

Voltage Interval data

：

14

Voltage Interval data

：

15

Current Interval data

：

CF

CF Card

② Save in

：

ME：Internal memory

③ File No 001〜999
④ Format CSV

Card reader

CF card

KEW6310

− 40 −

File format and name KEW6310

Configuration file

File Name ： ME 000123 .KAS
         ①   ②    ③

Bitmap file

File Name ： PS − CF 001 .BMP
    ①    ②  ③  ④

① Save in

② File No 000000〜999999
③ Extension KAS

① Save item PS : Print screen

② Save in

③ File No 001〜999
④ Extension BMP

Backup Memory

 In case one CF card is removed and inserted while saving data:

Saving

①. A file is created in the CF card,

when CF card is selected as
a destination for saving data,
and measu reme n t d a ta is
saved to the CF card.

②. A bac kup f ile i s creat ed in the int ernal

memory when a CF card is removed at
saving data.

Further data is saved to the internal memory.

CF

CF card

：

ME：Internal memory

CF

CF card

：

ME：Internal memory

③. When inserting the CF card
ag ai n durin g a data sav in g,
further data will be saved to the
last available space in CF card
①or ②.

Saving completes Download completes

Backup files in the internal memory are automatically
transferred to the last available space in a CF card.
(Time-series is as follows.)

− 41 −

Use of supplied software [KEW PQA MASTER]
enables to sort files in time-series.

KEW6310

12. Wiring check

 Proper wirings can be checked at WAVE Range.

1. Ordinal screen 2. Checking wiring 3. Check completes

Press the

  * Check results may by affected if great power factors exist at the measurement sites.

F2 Key.

Wiring check starts.

[Checking status] &
[Proper vector]

are displayed.

Wiring check completes.
In case of NG, Erro r message
appears. (Press the
when OK is displayed.)

Criteria of Judgment and cause

Check Criteria of Judgment Cause

Frequency Frequency of V1 is between 42 and

Voltage input Voltage input is 10% or more of

Voltage
balance

Voltage phase

Current input Curren t input is 5 % or more of

Current phase Current input is within ±60º of

68Hz.

(Voltage Range x VT).

Voltage input is within ±30 º of
reference voltage (V1)
* ( not judge d b y s i ngl e -ph a se

wiring)
Phase of voltage input is within ±10º
of reference value (proper vector).

(Current Range x CT).

reference value (proper vector).

• Voltage clip is firmly connected to the DUT?

• Measuring too high harmonic components?

• Voltage clip is firmly connected to the DUT?

• Voltag e test leads a re firml y connected to the
Voltage input terminals on the instrument?

• Setting against the wiring under test are matched?

• Voltage clip is firmly connected to the DUT?

• Voltag e test leads a re firml y connected to the
Voltage input terminals on the instrument?

• Voltage test leads are properly connected?

(Connected to proper channels?)

• Clamp sensors are firmly connected to the Power
input terminals on the instrument?

• Setting for Current Range is appropriate for input
levels?

• Arrow mark on a Clamp sensor and the orientation
of flowing current is matched? (Power supply to
Load)

• Clamp sensors are connected properly?

ENTER Key

KEW6310

− 42 −

DISTRIBUTOR

10-08 92-1882B