Kyoritsu Electrical Instruments 6315-01, 6315-00, 6315-03, 6315-04 User manual

Quick Manual

KYORITSU ELECTRICAL

INSTRUMENTS WORKS, LTD.

POWER QUALITY ANALYZER

KEW631

KEW6315

KEW631KEW631

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Preface

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

ensure safe operation of the instrument and maintain it in a safe condition. Thus, these

to
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

KEW6315

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

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KEW6315

1

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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 a

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 ca

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.

s not to exceed the target maximum demand values.

n be measured simultaneously with electrical power

Feature

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Functional overview

3

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

” for further details.

” to start

up setting by

” for further details.

Functional overview

Start/ Stop

Choose either “Quick start guide” or “Start now
recording. Can do simple and fast start­selecting “Quick start guide”.

See “2. Start/Stop Recording

Inst/ Integration/ Demand

the preset target value can also be checked.

See “5. Inst/ Integration/ Demand

KEW6315

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.

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KEW6315

4

Waveform

Waveforms

Waveform

Harmonic Analysis

Harmonic components of voltage and current per CH are

displayed on a graph.

See “

graph.

See “7.

of voltage and current per CH are displayed on a

” for further details.

8. Harmonic Analysis” for further details.

Functional overview

Setting (SET UP)

Make settings for KEW6315 and measurements.

See “10. Setting” for further details.

KEW6315 -

Power Quality (QUALITY) event

Display voltage swell, dip, int, transient, inrush current
and flicker.

See “9. Power Quality” for further details.

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Start/ stop recording

5

start recordings with simple steps by selecting

Ensure your safety and do the appropriate preparation

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

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Check the Test environment.

diagnosis, wiring check and detection of connected

* It is recommended to do this test for ensuring the testing

See P.40.

Select the wiring system to be measured.

2

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/

Can

Select the

recording item

S

Steps for measurement

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“Quick start guide”.

s before starting measurements.

Select the

wiring system

(1)

*

Confirm the

connections

(2)

* Select a proper wiring system for accurate

measurements.

See P.7.

Check the test

environment

KEW6315

(3) Connect to the circuit to be tested.

* Read and follow the safety precautions

described in the instruction manual.

-

(4)(5)

* Self-

sensors will be performed in this test.

conditions are correct.

See P.17.

See P.8.

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6

ethod

Select a recording interval.

* Selecting

case,

instructions

See P.

short interval gets the file size large. In this

Start/ stop recording

Select the

rec. interval

Select the

rec. m

(6)

Check the

selected method

Start

recording

a

a long period recording cannot be performed.

38.

(7)(8)(9) Select a recording method.

See P.11.

(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

displayed on the screen.

KEW6315 -

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Wiring system

Power

supply

A4

A3

A2

A1

VN

V1

A4

A3

A2

A1

VN

V1

V2

A4

A3

A2

A1

VN

V1

V2

A3

A2

A1

V3

V1

V2

A3

A2

A1

V3

V1

V2

VN

(2) Wiring system

Any of the followings can be selected.

L

N

L1(R)

supply

Power

L2(S)

L3(T)

L

N

L

N

L

N

L

N

Load

(1)

1P2W

Load

(2)

1P2W

Load

(3)

1P2W

Load

(4)

1P2W

L1(R)

L2(S)

L3(T)

L1(R)

L2(S)

L3(T)

1P2W×2

1P2W×3

1P2W×4

Load

(1)

3P3W

Load

(2)

3P3W

1P2W×1

3P3W×1

3P3W×2

KEW6315

L1

supply

Power

N

L2

L1

N

L2

Load

(1)

1P3W

1P3W×1

1P3W×2

L1

Load

N

(2)

1P3W

L2

L1(R)

supply

Power

L2(S)

L1(R)

L2(S)

Load

3P3W

L3(T)

L3(T)

3P3W3A

L1(R)

Power supply

L2(S)

L3(T)

N N

L1(R)

L2(S)

L3(T)

3P4W

Load

3P4W

Orientation of Clamp sensor

Load

Power
source

Arrow mark:
Point towards
load side.

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

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KEW6315

8

result will be

Operating condition of the instrument system will

(4)/ (5) Test Environment Check

Test environment check

Select “ Start test ”and press the “ENTER”

button to start the test. The test

displayed on the screen.

Select and press the “ENTER” on “OK”/

”NG” to see the details.

Environment check

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

be checked and the result will be displayed.

The connected sensors are automatically
detected and their max Ranges will be set.

Sensor detection

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Wiring check

9

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

Voltage clip is firmly connected to the DUT?

Measuring too high harmonic components?

Voltage clip is firmly

Voltage test lead

AC v

Settings are matched with the wiring system under

test?

Voltage clip is firmly connected to the DUT?

Voltage test lead

AC v

within ±10º of reference value

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 the Clamp sensor and the orientation

of flowing current coincide with each other?

(Power supply to Load)

Clamp sensors are connected properly?

NG judgment

Wiring check

Criteria of judgment and cause

left corner.

KEW6315

Check Criteria of Judgment

Frequency of V1 is within 40

Frequency

AC voltage

input

Voltage

balance

Voltage

phase

Current

input

Current

phase

- 70Hz.

AC voltage input is 10% or
more of (Nominal voltage x
VT).

AC voltage input is within
±20% of reference voltage
(V1).
* (not checked in

single-phase wiring)

Phase of AC voltage input is

(proper vector).

Current input is 5% or more

and 110% or less of (Current

Range x CT).

- Power factor (PF, absolute

value) at each CH is 0.5 or

more.

- Active power (P) at each

CH is positive value.

Causes

-

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­oltage input terminal on the instrument?

-

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­oltage input terminal on the instrument?

-

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-

-

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connected to the DUT?

is firmly connected to the

is firmly connected to the

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KEW6315

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If “NG” judgment is given frequently, there might be something wrong with the instrument.

in the instruction manual.

If the detection result is NG, each sensor type will be displayed in red.

Types of the connected current sensors are harmonized? Types of the current

measurements

sensors are firmly connected to the

If any failures are in doubt:

Exchange the connections of the sensors and test again.

Connect the current sensor, for

another sensor is properly detected.

If the result "NG" is given

suspected. A defect of sensor is suspected if "NG" is given for the same

another

Stop using the instrument and the sensor, if any defects are in doubt, and refer

Self-diagnosis

instrument and refer to “Troubleshooting”

Sensor detection

Criteria of judgment and cause

Self-diagnosis

Stop using the

Causes

Check

Type of

current sensor

???

(cause unknown)

KEW6315 -

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sensors used for

- Current

-

sensor connected to

to "Troubleshooting"

Causes

should be the same.

instrument?

which "NG" is given, to the CH on which

for the same CH, a defect of the instrument is

CH.

in the instruction manual.

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Setting for recording method

11

date and time.

start date and time.

performs recording at the preset

as above

to 18:00 on August

KEW6315 performs recording during the selected time period at the preset

as above

, and

(8)/ (9) Setting for recording method

The following explains how to set recording start

KEW6315

(8) Specify the recording

During the selected period, KEW6315

Example: When the date & time are specified

From 8:00 on August 2, 2013

(9) Specify the recording time period.

intervals.

, the recording period will be as follows.

7, 2013,

recording processes during the preset time span.

Example: When the time period is specified

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

(viii) 8:00 to 18:00 on August 8, 2013.

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intervals, and repeats

, the recording period is as follows. KEW6315 does not

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12

is used for selecting an item, the

the alternation.

are explained as follows

Cursor

is being selected, over the i

left is the Recording start screen. Press the

the blue highlight on the desirable recording method, and press the

Key to confirm the selection. To quit the start guide, press

Key.

display of t

then

the

ENTER

previous screen

To alter the numbers such as

over digits with the right and left

with the up and down

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

s.

ESC

the changes.

blue highlight

, showing the item

. In the screen at the

Key and move

select

able items

Date/ Time

and alter the number

Switching of displayed parameters

Basically, the Cursor Key
selection, and the ESC Key is for canceling
Guide” as an example, Key operations

Press the

ENTER

the ESC

If the
to the left,
used. Use
press the

ENTER Key is for confirming the

Taking the procedures in “Quick Start

.

Key to move the

tems in blue letters

he

the up, down, right and left Cursor Keys can be

Cursor Keys to select the proper wiring system and

Key to confirm the selection. To return to the

and cancel the changes, press the ESC Key.

is similar to the one shown

Operating procedure

Cursor

Cursor Keys.

Cursor Keys

, move the blue highlight

Cursor Key

press the

Press the ENTER Key to confirm the selection, or

Key to return to the previous screen and cancel

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Instrument layout

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measurement..

各部の名称

3

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KEW6315

Front View

Display

(LCD)

Keys

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.

Long press (at least 2 sec) disables

KEY

LOCK

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.

コ

- 13 - KEW6315

START/ STOP Key

Start/ stop

Status LED

Green

Red Blink: Backlight is off.

Light up: Recording& measuring

Blink: Stand-by

W/Wh

Vector View phases.

Waveform

View inst, integration

and demand values.

View voltage/ current

waveforms.

Power Key

Power on/ off.

Change and confirm: Basic, Measurement, Record-

ing and other settings, and also edit the saved data.

Menu Key

Harmonic

Analysis

Power

Quality

Confirm the entries.

Cancel setting changes and return to

the previous settings.

SETUP Key

ENTER Key

ESC Key/ RESET Key

View harmonic voltage, current

and power energy.

View the detailed info about:

swell, dip, int, transient, inrush

current and flicker.

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14

Connector

AC voltage Input Terminal

(VN, V1, V2, V3)

Current Input Terminal

(A1, A2, A3, A4)

Connector

Side face

SD Card Slot

Terminal Cover

Power Connector

Battery case

USB port

Analog Input/ Digital Output Terminal

Battery Cover

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Symbols on the LCD

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.

KEW6315

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.

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KEW6315

Symbols on the LCD

Symbols displayed on the LCD

Symbols on the LCD

V*1 Phase voltage VL

+

P

PF

DC1

Active
power

Power

factor

Analog input

voltage at 1ch

consumption

-

regenerating

+

lagging

-

leading

An*2 Neutral current PA*3

WP+

WP-

THD

Pst

(1min)

*1

*2

*3

Active power energy

(consumption)

Active power energy

(regenerating)

Voltage/ Current

total distortion factor

Voltage flicker (1 min) Pst Short term voltage flicker

W screen: Displays of V and VL can be “customized” when “3P4W” is selected.

W screen: “An” is displayed only when “3P4W” is selected.

W screen: Displays of PA and C can be “customized”.

*1

Line voltage A Current

Q

Reactive

power

+ lagging

- leading

f Frequency

DC2

WS+

WS-

Analog input

voltage at 2ch

Phase

angle

+ lagging

- leading

Apparent power energy

(consumption)

Apparent power energy

(regenerating)

S

Apparent

power

C*3 Capacitance calculation

WQi+

WQc+

Reactive power energy

(lagging)

Reactive power energy

(leading)

Plt Long term voltage flicker

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.

Brightness adjustment

Backlight brightness can be changed by 11 levels.

Contrast adjustment

Contrast can be changed by 11 levels.

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Power supply

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測定前の確認

4

.

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.

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Powered by AC

Power supply icon

Powered by

battery

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.)

KEW6315

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.

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18

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

240VAC(±10%)

65Hz

20VAmax

Cord Connection

Voltage test leads

Cord connection

Match the

arrow marks.

Power cord

Rated supply voltage : 100 -

Rated supply frequency : 45 -

Max power consumption :

Start-up Screen

instruction manual.

Clamp sensor

“Trouble-shooting” in the

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Instantaneous value: W

19

button to toggle the screens.

Keys to switch the

values

(Integration value)

Sum of measured

(all CHs)

5

5

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t

t

/

/

I

I

n

n

t

t

e

e

g

g

r

r

a

a

t

t

i

i

o

o

n

n

/

/

D

D

e

e

m

m

a

a

n

n

d

d

v

v

a

a

l

l

u

u

u

I

I

n

n

s

s

t

t

v

v

a

a

l

l

u

u

e

e

:

:

“

“

W

W

”

”

e

e

s

s

瞬時値／積算値／デマンド

5

.

I

n

s

t

/

I

n

t

e

g

r

a

Switching screens

t

i

o

n

/

D

e

m

a

n

d

v

a

l

e

s

KEW6315

Press the

I

n

瞬時値「W」

Switching the items to be displayed

Use the right and left Cursor

Keys to switch the avg, max and min inst

W (Inst value)

s

t

v

a

l

u

Wh

e

:

“

W

”

displayed systems and the up and down Cursor

.

Demand

Measured values

-

per CH

values

- KEW6315

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KEW6315

20

Changes of measured values are displayed on a graph.

Customize

Select and change the items to be displayed.

Instantaneous value: W

Trend

Zoom and display the selected items.

4-split 8-split

Zoom

KEW6315 -

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Integration value: Wh

21

the right and left

Switch and select the items with the up and down

I

I

n

n

t

t

e

e

g

g

r

r

a

a

t

t

i

i

o

o

n

n

v

v

a

a

l

l

u

u

e

e

:

:

“

“

W

W

h

h

”

”

D

D

e

e

m

m

a

a

n

n

d

d

I

n

t

e

g

r

a

t

i

o

n

v

a

l

u

e

:

“

積算値

積算値「「「「WWWWｈ」

積算値積算値

Switching the measurement items

Select the proper system with

Cursor Keys.

D

e

m

デマンド
Switching the measurement items

ｈ」

ｈ」ｈ」

a

n

d

W

h

”

Cursor Keys and the CH with the up and down

Σ: sum of the all measured values

Σ: sum of measured values per CH

Cursor Keys.

KEW6315

-

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KEW6315

22

Meas

period is displayed.

refreshed if any higher demand

Parameters displayed when selecting “

Time left

Count down the time set by: [SETUP] →
[Measurement] → [Demand] → [Measurement].

DEM Target

Set the value by: [SETUP]→ [Measurement]
→[Demand]→[Target].

DEM Guess

Estimate and display the demand value that would
be when this demand interval ends.

Present value x demand interval

Elapsed time from the start of the measurement

DEM Present

Demand value (average power) within a demand
interval.

(Integration values of “WP+”
from the start of measurement) x 1 hour

DEM Max with recorded date

Max demand recorded in a measuring
Displayed value will be
are detected.

Demand interval

.” on the right row.

s

Demand

KEW6315 -

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Demand

23

Target value

DEM G

Percentage of the predicted value against the

Target value

Audible warning

when

cycle

cycle

cycle

interval

Parameters displayed when selecting “

row.

Time left

Count down the time set by: [SETUP] →
[Measurement] → [Demand] → [Measurement].

DEM P

Load factor: percentage of the present value
against the target value. Present value

target value.

Predicted value

”

(Change in specific period)

Target

KEW6315

on the right

the predicted value

exceeds the target value.

warns

Inspection

Inspection

Demand

(Elapsed time)

Inspection

Save point

Prediction

Demand value
(present value)

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KEW6315

24

(Elapsed time)

isplayed

(Displayed on measurement

Demand

Parameters displayed when selecting “

Measured demand with recorded date

Demand value is displayed with recorded
date & time info where the cursor is located.

Bar graph

White bar: Percentage of hidden pages
Orange bar: Percentage of the present d
pages

Target value

Demand value

Start of demand

Rec. start date& time

”

(Demand change)

Most recent rec. date& time

on the right row.

Cursor

Use the right and left Cursor
Keys to move the cursor.

End of demand

Max measured demand

screen.)

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Vector

25

of voltage vector.

vector.

6

6

.

.

V

V

e

e

c

c

t

t

o

o

r

r

Diagram of the selected wiring is

ベクトル

6

.

V

e

c

t

o

r

KEW6315

Wiring diagram

displayed.

Switching screens

Wiring check

Checked results will be displayed.

: toggle the line lengths

1 2 5 10

: toggle the line lengths of current

1 2 5 10

* time(s)

* time(s)

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KEW6315

26

Keys and check for the waveforms.

Restore all the changed magnification settings and automatically

select the appropriate magnification.

: toggle the magnifications of voltage waveform (vertical).

: toggle the magnifications of

: toggle the magnifications of

7

7

.

.

W

W

a

a

v

v

e

e

f

f

o

o

r

r

m

m

波形

7

.

W

a

v

e

f

o

r

m

Waveform

Switching displayed items

Select the items with up and down Cursor

Measured values

per CH

0.1 0.5

0.1 0.5

1

1 2 5 10

current waveform (vertical).

1 2 5 10

time axis (horizontal).

2 5 10

* time(s)

* time(s)

* time(s)

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Harmonic analysis

27

Keys to toggle the CH

scroll the displayed degree of h

8

8

.

.

H

H

a

a

r

r

m

m

o

o

n

n

i

i

c

c

s

s

A

A

n

n

a

a

l

l

y

y

s

s

i

i

s

s

高調波解析

8

.

H

a

r

m

Switching displayed items

Graph

o

n

i

c

s

A

n

a

l

y

s

i

s

KEW6315

Use the up and down Cursor

List

Use the up and down Cursor Keys to

Measured values

per CH

Measured values

per CH

s for checking each harmonic.

armonics.

-

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KEW6315

28

Logarithm

Phase angle

Current

Current

Voltage, Linear, Overall display

List, Rate of content

Harmonic analysis

Power

Zoom

RMS value

Power

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Harmonic analysis

[Measurement]→[Harmonics]→[MAX hold].

Parameters displayed on graph

KEW6315

Overall display

Rate of content

Harmonic content against the 1st basic wave.
When selecting “Logarithm”, 10% will be the
max percentage of the vertical axis, and the
higher content rates will not be displayed.

Zoom

Harmonic analysis: max. 50th

Graph color

If multiple CHs are used, colors harmonized with
each CH will be used and displayed.

Max value

Max values of each order will be marked and
displayed. To turn on/off this function: [SETUP]→

Scroll bar

White: Overall range up to 50th.

Dark orange: Current displayed area.

Use the left and right Cursor Keys to scroll and zoom the desirable area.

Harmonic analysis: 15/ 50th

Logarithm

Exceeding axis value

Exceeding threshold

Allowable range

Complied with IEC61000-2-4, Class3.

To change the range: [SETUP]→ [Measurement]

→[Harmonics]→[Edit allowable range].

- 29 - KEW6315

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KEW6315

30

Keys and toggle the occurred events

toggled in the following sequence.

9

9

.

.

P

P

o

o

w

w

e

e

r

r

Q

Q

u

u

a

a

l

l

i

i

t

t

y

y

E

E

v

v

e

e

n

n

t

t

電源品質

9

.

P

o

w

e

r

Q

u

a

l

i

t

y

Switching displayed items

Power quality

E

v

e

n

イベント

イベント

イベントイベント

Switching measurement items

Use the up and down Cursor

Event

t

Flicker

to be displayed on the screen.

KEW6315 -

Displayed events are

All events Swell

Dip Int Transient Inrush current

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Swell/ Dip/ Int/ Inrush current

Me

asured

waveform

Me

asured

waveform

(4)

(5)

(6)

(4)

(5)

(6)

(7)

(8) (9)

(1)

(2) (3)

KEW6315

Measurement method
Swell/ Dip/ Int/ Inrush current

Each event will be detected with the r.m.s. values in one gapless waveform and with a half-wave over­lapping. The beginning of the waveform where the first event is detected is regarded as the start of the
event. If further events are not detected in the following waveform, the beginning of the waveform is
regarded as the end of the event. The detected event is assumed to be continued between the start to
the end of event detection.

Example: Dip event detection

*

Int events are detected in the same method.

RMS waveform

rms value(2)

rms value(1)

(1) (2) (3)

Threshold

rms value(4)

rms value(3)

Start of dip

rms value(6)

rms value (5)

rms value(8)

rms value (7) rms value(9)

(7) (8) (9)

Hysteresis

End of dip

duration

Example: Swell event detection

*

Inrush current events are detected in the same method.

RMS waveform

- 31 - KEW6315

rms value(2)

rms value(1)

Threshold

rms value(4) rms value(6) rms value(8)

rms value(3) rms value(5) rms value(7) rms value(9)

Start of swell

End of swell

duration

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KEW6315

Me

asured

waveform

RMS

waveform

Me

asured

waveform

Transient

Transient

Voltage waveforms will be monitored at approx 40ksps, gapless, to calculate and check for transient event

every 200ms. The beginning of the 200ms period where the first transient is detected is regarded as the

start of the event. If further events are not detected in the following 200ms period, the beginning of the

period is regarded as the end of the event. The detected transient is assumed to be continued between the

start to the end of event detection.

Example: Transient event detection

Start of transient

for approx 200ms

Duration

Threshold value

End of transient

Saved data

When an event occurs and is detected, KEW6315 records the type of the event, start/ end time and the
values. The following data will also be recorded. The event waveform is recorded for 200ms during the
1 sec of the data refresh period.

Event waveform

Waveforms and also event data on all the chs are recorded for approx. 200ms (50Hz: 10-cycle, 60Hz:
12-cycle) at 8192 points in total. When different events occur within 1 sec, only the waveforms which
contain the highest-priority events will be recorded. However, if the same type of events occur at the
same time, the one containing the highest (deepest) values will be recorded. If the highest (deepest)
values are also the same, the one with a longer duration will be recorded. As for the channels, there is
no priority order.

Priority order: Voltage transient-> Int-> Dip-> Swell-> Inrush current

RMS variations

Voltage/ current rms value (resolution: half-cycle) variations and event data on all chs are recorded for
1 sec at data refresh.

Example: Dip detection in 800ms period:

Waveform at event start (approx. 200ms)

Waveform at event end (approx. 200ms)

r.m.s variations at the detection of

KEW6315 - 32 -

event start (approx. 1sec)

r.m.s variations at the detection of

event end (approx. 1sec)

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Flicker

33

and toggle the items

V

F

F

l

l

i

i

c

c

k

k

e

e

r

r

フリッカ

フリッカ

フリッカフリッカ

F

l

i

c

k

e

r

Switching displayed items

KEW6315

Use the up and down Cursor Keys

Parameters displayed when selecting “

Pst Calc...

Time length required for Pst calculation.

V

Average voltage

Pst（（（（1min））））

Pst value is displayed and refreshed every
minute.

Pst

Short-term flicker (Pst) is displayed and refreshed
every 10 min.
MAX: the max values detected through the start to
the end of measurement, and will be refreshed
every time when the max value is exceeded.

Plt

Long-term flicker (Plt) is displayed and refreshed
every 2 hours.
MAX: the max values detected through the start to
the end of measurement, and will be refreshed
every time when the max value is exceeded.

Frequency

The value will be refreshed every second.

.

” on the right row.

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KEW6315

34

Pst(1min)

P

when the max value is exceeded.

when

Cursor

Keys to move.

Flicker

Parameters displayed when selecting “

Pst Calc...

Time length required for Pst calculation.

Pst(1min)

Latest measured value.

Max.

Max values detected through the start to the end
of measurement, and will be refreshed every time

the max value is exceeded.

Trend graph

Change of the latest 120 data Pst(1min.).

Parameters displayed when selecting “

Plt

Plt value and the recorded date & time info where
the cursor is located.

Max.

Max values detected through the start to the end of
measurement, and will be refreshed every time

Bar graph

White bar：percentage of whole pages.
Orange bar：percentage of the present
displayed pages.

Press the right and left

(Elapsed time)

Rec. start time

” on the right row.

lt ” on the right row.

Cursor

Latest rec. time

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Setting （SETUP）

)

1

1

0

0

.

.

S

S

e

e

t

t

t

t

i

i

n

n

g

g

設定

1

0

.

S

e

t

t

i

n

g

Press the Key to access to any of the following five settings.

Press the Cursor Keys to move to each setting.

Basic setting Make settings for the items common to each measurment.

Meas. setting Make settings for each measurement mode.

Rec. setting Make settings for recoding.

Saved data Edit the recorded data or alter the instrument setting.

Others Configure the environmental setting.

Each setting

(External input DC)

(Frequency)

Basic

(Wiring)

(Voltage)

(Current)

Measurement

(Demand)

(Harmonics)

(Power quality)

(Flicker)

(Capacitance

Calc.)

Recording

(REC item)

(REC method)

(Manual/
Constant rec./
Time period rec.)

Saved data

(REC data)

KEW6315 setting

KEW6315

Others

(Environment)

- 35 - KEW6315

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KEW6315

Basic setting

Setting item Details of setting

Setting （SETUP）

(1)1P2W×1

(2)1P2W×2

Wiring

Voltage range 600V/1000V

VT ratio 0.01-9999.99(1.00)

Nominal voltage 50V-600V(100V)

Clamp/ current range

CT ratio 0.01-9999.99(1.00)

DC range 100mV/1.000V/10V

Frequency 50Hz/60Hz

(3)1P2W×3

(4)1P2W×4

* Current terminals that are not used in the selected wiring system can be used to

measure rms currents and harmonics.

8128:5/50A/AUTO

8127:10/100A/AUTO

8126:20/200A/AUTO

8125:50/500A/AUTO

8124/8130:100/1000A/AUTO

8129:300/1000/3000A

8141:

8142: 500mA/AUTO

8143:

8146:

8147: 1/10A/AUTO

8148:

(5)1P3W×1

(6)1P3W×2

Power Clamp sensor

Leakage current Clamp sensor

(7)3P3W×1

(8)3P3W×2

(9)3P3W3A

(10)3P4W

* Default values are highlighted in gray.

KEW6315 - 36 -

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Setting （SETUP）

Measurement setting

Setting item Details of setting

KEW6315

Interval

Demand

Harmonics

Power quality

Flicker Filter (Ramp) 230V/220V/120V/100V

Capacitance

calculation

Inspection
cycle

Target 0.001mW-999.9TW(100.0kW)

THD(total harmonic distortion) calc. THD-F(based on the fundamental waveform)/

Allowable range Default/ customize(V/A)

MAX HOLD ON/OFF

Hysteresis against nominal V: 1 to 10%(5%)

Transient against nominal V: ±50 to ±2200Vpeak(300%)

Swell against nominal V: 100 to 200%(110%)

Dip against nominal V: 0 to 100%(90%)

Int against nominal V: 0 to 100%(10%)

InrushCurrent against “A” range: 0 to 110%(100%)

Interval: 10min/ 15min 1min/2min/5min

Interval: 30min 1min/2min/5min/10min/15min

Target PF 0.5-1(1.000)

Not be used/ 10min/15min/30min

THD-R(based on all rms values)

Recording setting

Setting item Details of setting

Recording

item

Recording

method

Constant

measurement

Timer

Harmonics Record/ Do not record

Power quality (event) Record/ Do not record

1sec/2sec/5sec/10sec/15sec/20sec/30sec/

Interval

Start Manual/Constant rec./Time period rec.

REC Start Day/ Month/ Year Hour: Minute (00/00/0000 00:00)

REC End Day/ Month/ Year Hour: Minute (00/00/0000 00:00)

Rec. period

Time period Start-End Hour: Minute (hh:mm)- Hour: Minute (hh:mm)

Start-End Day/ Month/ Year (DD/MM/YYYY)- Day/ Month/ Year (DD/MM/YYYY)

* Default values are highlighted in gray.

1min/2min/5min/10min/15min/20min/30min/

1hour/2hours/150,180 cycles (approx 3sec)

Save setting

Setting item Details of setting

Delete data.

REC data

KEW6315 setting

- 37 - KEW6315

Transfer data.

Format

Save setting.

Read settings.

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KEW6315

1

1

1

1

.

.

S

S

D

D

C

C

a

a

r

r

d

d

/

/

S

S

a

a

v

v

e

e

d

d

D

D

a

a

t

t

a

a

Other settings

Setting item Details of setting

Saved data

Language*

Date format* YYYY/MM/DD / MM/DD/YYYY / DD/MM/YYYY

Environment

CH color*

Time* dd/mm/yyyy hh:mm:ss

ID Number 00-001 to 99-999(00-001)

Buzzer ON/OFF

Bluetooth ON/OFF

KEW6315

setting

SD カード／保存データについて

1

1

.

S

D

Power

Backlight

System reset

*Items listed with “*” mark will not be restored to default even after the system is reset.
* Default values are highlighted in gray.

C

a

r

d

/

S

a

v

e

AC power Power off in 5 min./Disable auto-off

Battery Power off in 5 min.

AC power Power off in 5 min./Disable auto-off

Battery Power off in 2 min.

d

D

a

Japanese/ English

white/ yellow/ orange/ red/ gray/ blue/ green

The selected colro for VN is refected on the wiring diagram only.

Reset the system. Confirmation message appears before
resetting the system.

t

a

Possible recording time

When the 2GB of SD is used:

REC item

Interval

1sec 13days
2sec 15days

5sec 38days
10sec 2.5months
15sec 3.5months
20sec 5months
30sec 7.5months 1.5months

1hour
2hours
150/180-cycle

* Data of power quality events are not considered to estimate the possible recording time.

The max possible time will be shortened by recording such events.

* Please ensure to use the SD cards provided with this instrument or as optional parts.

Power +Harmonics

3days
3days

7days
15days
23days
1month

Interval

1min 1-year or more
2min 2-year or more

5min 6-year or more
10min
15min 3-year or more
20min 5-year or more
30min 7-year or more

Power +Harmonics

10-year or more

REC item

23days

3months

6months

1-year or more

2-year or more

10-year or more

4days

KEW6315 38

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Saved data

|

File name:

Folder name:

Saved data

The file name will be assigned automatically. File no. is kept and saved, even after powering off the
instrument, untill the system is reset. The file number will increase until it exceeds “999”.

KEW6315

Print screen:

Press the to save the screen images as BMP files in the root directory on the SD card.

File name: PS-

|

Dest. code

* Dest. = Destination

KEW6315 Setting:

Data folder:

Press the key and move to “Saved data” tab, and then select “Save Settings”.

New folder will be created per measurement to save the interval and power quality data.

|

Interval data

KEW6315 setting

Measurement setting

Power measurement

Harmonics measurement

SD

SD:SD card
ME:Internal memory

SUP

S 0000 .PRE

000

File No.

(000-999)

.BMP

Extension
(BMP file)

| |
Dest. code

S:SD card

M:Internal memory

/ KEW

/ S

Dest. code
S:SD card
M:Internal memory

File name SUP

INI S

INP S

INH S

SD:SD card

M:Internal memory

Dest. code

File No.

(0000-9999)

(0000-9999)

S

|

0000

|

Data No.

Data No.

(0000-9999)

0000 .KEW

0000 .KEW

0000 .KEW

0000 .KEW

|

|

Power quality data

Event type

Waveform

V/ A change

|

39 KEW6315

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File name EVT

WAV

VAL

S:SD card
M:Internal memory

S

S

S

Dest. code

(0000-9999)

0000 .KEW

0000 .KEW

0000 .KEW

|

Data No.

KEW6315

●

Saved items

The following data measured on each CH will be saved according to the selected recording method.
Saved items are depending on the selected recording method and wiring system.

REC file REC item

Power +Harmonics +Event

RMS voltage (line/ phase)

RMS current

Active power

Reactive power

Apparent power

Power factor

Frequency

Neutral current(3P4W)

V/ A phase angle (1st order)

Analog input voltage, 1CH, 2CH

Power

measurement

Harmonics

measurement

V/ A Change

Event type

Waveform

Active power energy (consumption/ regenerating)

Reactive power energy (consumption) lagging/ leading

Apparent power energy (consumption/ regenerating)

Reactive power energy (regenerating) lagging/ leading

V/ A phase difference (1-50th order)

Measured values at event detection

V/A unbalance ratio

1-min Voltage flicker

Short-term V Flicker (Pst)

Long-term V Flicker (Plt)

Capacitance calculation

Demand (W/VA)

Target demand (W/VA)

Total harmonic distortion of V(F/R)

Total harmonic distortion of A(F/R)

Harmonic V/ A(1-50th order)

V/ A phase angle (1-50th order)

Harmonic power(1-50th order)

RMS voltage per half-cycle

RMS current per half-cycle

Event detected date&time

Event type

V/A waveform

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Meas./ Rec. setting

Saved items

KEW6315 40

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Data transfer

KEW6315

Data transfer

1. SD card and USB

Data in the SD card or the internal memory can be transferred to PC using USB connection or
SD card slot/ reader.

Method of transfer

USB Card reader

SD card data (file) △*1 O

Internal memory data (file) O ---------

*1

: It is reccomended to transfer the large data by use of SD card since transfering large data files by

USB requires more time than using the SD card reader. (transfer time : approx 320MB/ hour)

As to the manipulation of SD cards, please refer to the instruction manual attached to the card.
In order to save data without any problem, make sure to delete the files other than the data measured
with this instrument from the SD card beforehand.

USB

SD card

Internal memory/

SD card data

SD card slot or
card reader

2. Bluetooth

Measuring data can be checked on android devices in real-time via Bluetooth communication.
It is necessary to enable Bluetooth function prior to using Bluetooth communication.
(Setting No. 26: Bluetooth)

Before starting to use this function, download the special application “KEW Smart” from the Internet site.
The application “KEW Smart” is available on the download site for free. (Internet access is required and
charges may be incurred.)

41 KEW6315

Bluetooth

Android device

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