Hioki 8714-01 Measurement Guide

MEASUREMENT GUIDE

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8714-01/8715-01

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POWER HiCORDER

MEASUREMENT GUIDE

Introduction

The 8714-01/8715-01 POWER HiCORDER measurement guide describes some several
measurement examples. Therefore, the settings may be different from those used in the actual
measurements you perform. In this case, refer to the POWER HiCORDER's instruction manual
and modify the appropriate settings accordingly before performing your measurements.
Also, be sure to read the POWER HiCORDER's instruction manual for information on cautions
to take when connecting the device and performing measurements. Make sure you fully
understand the contents before operating the device. HIOKI cannot be held liable for any
accidents except for those caused by the product.

The following table of contents lists the several different measurement examples as well as
their reference page numbers. All these examples assume only CH 1 is used in the
measurements. Therefore, turn off the waveform display of all other channels. Also,
measurement examples described in this measurement guide assume all other settings use the
factory defaults. No attempt is made to describe settings not directly related to the
measurements. For the information, refer to the 8714-01/8715-01 POWER HiCORDER's
instruction manual.

Viewing the Voltage Waveform of the 220 V Power Line
Viewing the Current Waveform of the Power Line
Recording the Passage Current Waveform
Recording the Instantaneous Stop Waveform of the 220 V Power Source
Recording the Surge Current Waveform when Power is Supplied
Recording the RMS Value of the Voltage Variation of the 220V Power Source
Recording the RMS value of the Load Variation of the Power Source
Monitoring the Leak Current Waveform
Recording the RMS Value of the Leak Current
Viewing the Waveform of Power Surge/Noise at the 220 V Power Line
Viewing the Voltage Waveform of the 440 V Power Line
Recording the Abnormal Waveform while Recording the Power Variation
(Instantaneous Waveform Recording)
Application Examples on 220 V Line Power Monitoring
Viewing the Waveform before the Trigger Point (Pre-Trigger)

1
2
3
4
5
6
7
8

9
10
13

14
15
16

Viewing the Voltage Waveform of the 220 V Power Line

f

g

9197 CONNECTION CORD

9418-10 AC ADAPTER

To view the voltage waveform, set the measurement mode to "Waveform". For the time axis
setting, "2ms" would be quite satisfactory. Set the recording length to "20 DIV".

In the case of voltage waveform, after selecting "Volt" as the input mode, set the range to
"200V Line".

1

Selection

DMM

Move the cursor

Measurement

mode

カード

Measurement Start

Make sure the power recorder's connecting cord is connected to the power terminal of the
power source. Then, press the [START] key to start the measurement. A voltage waveform
appears on the waveform display screen.
To stop the measurement, press the [STOP] key. After the measurement stops, the voltage
waveform last captured appears on the screen.

When multiple waveforms are captured, they are displayed in the

ollowing way according to the sequential save.

To display the waveforms, press the channel select key (CH1). The
displayed number indicates the block in the diagram which appears
in reverse color. This block is the waveform currently displayed on
the waveform display screen.
To change the display, move the flashing cursor to the number's
position or directly to the block's position ( ), then press the

/
key to confirm.
If you start the measurement again, the previous waveform is
discarded and recordin

starts from the first block.

Viewing the Voltage Waveform of the 220 V Power Line

2

Viewing the Current Waveform of the Power Line

9418-10 AC ADAPTER 9010-10 CLAMP ON PROBE

To view the current waveform, set the measurement mode to "Waveform". For the time axis
setting, "2ms" would be quite satisfactory. Set the recording length to "20 DIV".

In the case of current waveform, after selecting "clamp sensor" as the input mode, select the
range of the clamp. In this example, "9010" and "100A" are selected. Set the clamp sensor also
to this range.

Starting a measurement

Clamp the clamp-on sensor to the power
line you want to measure.

100 A

Then, press the [START] key to start the measurement.
A current waveform appears on the waveform display screen.
To stop the measurement, press the [STOP] key. After the
measurement stops, the current waveform last captured
appears on the screen.

Selection

DMM

Move the cursor

Measurement

mode

カード

Viewing the Current Waveform of the Power Line

Recording the Passage Current Waveform

p

9418-10 AC ADAPTER 9010-10 CLAMP ON PROBE

To record the passage current waveform, set the measurement mode to "Waveform". For the
time axis setting, "2ms" would be quite satisfactory. Set the recording length to "20 DIV".

In the case of current waveform, after selecting "clamp sensor" as the input mode, select the
range of the clamp. In this example, "9010" and "200A" are selected. Set the clamp sensor also
to this range.

Set the trigger to "LVL", and then configure the trigger level. If you set the level to "100.0A" and
"

", when the current exceeds 100A the trigger activates and then the waveform is captured.

Until the trigger activates, the state remains as "wait for trigger".

3

Starting a measurement

Clamp the clamp-on sensor to the power
line you want to measure.
Then, press the [START] key to start the measurement.

200 A

When the trigger activates, the current waveform appears
on the waveform display screen. After the waveform equal
to the recording length is captured, the state returns to
"wait for trigger".
To stop the measurement, press the [STOP] key. After
the measurement stops, the current waveform last
ca

tured appears on the screen.

DMM

Move the cursor

Selection

Measurement

mode

Trigger point

100A

Trigger activates when the current exceeds 100A.

カード

Capturing 20 DIV of
waveform from the point
where the trigger
activates.

Recording the Passage Current Waveform

4

Recording the Instantaneous Stop Waveform of the
220 V Power Source

9197 CONNECTION CORD

9418-10 AC ADAPTER

To record the instantaneous stop waveform of the power source, set the measurement mode to
"Waveform". For the time axis setting, "2ms" would be quite satisfactory. Set the recording
length to "20 DIV".
In the case of voltage waveform, after selecting "Volt" as the input mode, set the range to
"200V Line". If you set the range to "200V Line", then you can measure the 220V and the 240V
power voltages.
Set the trigger to "DROP". For the measurement frequency, specify one which is suitable for the
region you are located. For the level, set a RMS value so that when the effective power voltage
drops below this value, the trigger will activate. In this example, it is set to "190.0Vr".
To see the waveform before the trigger point, try to set the trigger to "50%". Until the trigger
activates, the state remains as "wait for trigger".

Selection

DMM

Move the cursor

Measurement

mode

カード

Measurement Start

Make sure the power recorder's connecting cord is connected to the power terminal of the
power source.
Press the [START] key to start the measurement. When the trigger activates, the
instantaneous stop waveform appears on the waveform display screen. After the waveform
equal to the recording length is captured, the state returns to "wait for trigger" again.
To stop the measurement, press the [STOP] key. After the measurement stops, the voltage
waveform last captured appears on the screen.

Trigger point

190.0 Vrms
Trigger activates when

the effective level drops
below 190 Vrms.

Because the recording length is set to "20
DIV" and the pre-trigger is 50%, 10 DIV of
waveform before and after the trigger point
are captured. For details on pre-trigger,
see page 16.

Recording the Instantaneous Stop Waveform of the 220 V Power Source

Recording the Surge Current Waveform when Power is

pp

5

Su

lied

9418-10 AC ADAPTER 9010-10 CLAMP ON PROBE

To record the waveform of the surge current, set the measurement mode to "Waveform". For
the time axis setting, "2ms" would be quite satisfactory. Set the recording length to "20 DIV".
In the case of current waveform, after selecting "clamp sensor" as the input mode, select the
range of the clamp. In this example, "9010" and "20A" are selected. Set the clamp sensor also
to this range.
Set the trigger to "LVL", and then configure the trigger level. If you set the level to "2.500A" and
"

", when the current exceeds 2.5 A the trigger activates and then the waveform is captured.
To see the waveform before the trigger point, try to set the trigger to "50%". Until the trigger
activates, the state remains as "wait for trigger".

Starting a measurement

Clamp the clamp-on sensor to the power line
you want to measure.

Press the [START] key to start the measurement.
Turn on the power of the line you want to measure.
When the trigger activates, the current waveform

20 A

appears on the waveform display screen.
After the waveform equal to the recording length is captured, the
state returns to "wait for trigger".
To stop the measurement, press the [STOP] key.
After the measurement stops, the current waveform last
captured appears on the screen.

DMM

Move the cursor

Selection

Measurement

mode

2.5 A

Trigger activates when the current
exceeds 2.5 A.

Because the recording length is
set to "20 DIV" and the pre­trigger is 50%, 10 DIV of
waveform before and after the
trigger point are captured. For
details on pre-trigger, see page

16.

カード

Recording the Surge Current Waveform when Power is Supplied

6

Recording the RMS Value of the Voltage Variation of the
220 V Power Source

9197 CONNECTION CORD

9418-10 AC ADAPTER

To record the voltage variation of the power source, set the measurement mode to "Trend". For
the time axis setting, initially setting it to "10s" would be easy to understand.
For the measurement frequency, specify one which is suitable for the region you are located.
If print is set to "ON" as well, then printing begins as soon as the measurement starts.
In the case of voltage waveform, after selecting "Volt" as the input mode, set the range to
"200V Line".

Selection

DMM

Move the cursor

Measurement

mode

カード

Measurement Start

Make sure the power recorder's connecting cord is connected to the power terminal of the
power source.
Press the [START] key to start the measurement. When the measurement starts, the RMS
waveform of the voltage also prints at the same time
To stop the measurement, press the [STOP] key.

250 Vrms

200 Vrms

150 Vrms

If the range is "200V Line", the center of the screen (recording paper) becomes 200 Vrms.

Recording the RMS Value of the Voltage Variation of the 220 V Power Source

Recording the RMS value of the Load Variation of the
Power Source

9418-10 AC ADAPTER 9010-10 CLAMP ON PROBE

To record the load (current) variation of the power source, set the measurement mode to
"Trend". For the time axis setting, initially setting it to "10s" would be easy to understand.
For the measurement frequency, specify one which is suitable for the region you are located.
If print is set to "ON" as well, then printing begins as soon as the measurement starts.
In the case of current waveform, after selecting "clamp sensor" as the input mode, select the
range of the clamp. In this example, "9010" and "20A" are selected. Set the clamp sensor also
to this range.

7

Selection

DMM

Move the cursor

Measurement

mode

カード

Starting a measurement

Clamp the clamp-on sensor to the power line you want to measure.
Press the [START] key to start the measurement. When the measurement starts, the RMS
waveform of the current also prints at the same time
To stop the measurement, press the [STOP] key.

40 Arms

20 Arms

0 Arms

For current measurement of the power variation,
the lowest part of the screen (recording paper) becomes 0A.

Recording the RMS value of the Load Variation of the Power Source

8

Monitoring the Leak Current Waveform

9199 CONVERSION ADAPTER

9094 OUTPUT CORD

9418-10 AC ADAPTER

3283 CLAMP ON LEAK PROBE

9445 AC ADAPTER

To record the leak current waveform, set the measurement mode to "Waveform". For the time
axis setting, "2ms" would be quite satisfactory. Set the recording length to "20 DIV".
In the case of leak current waveform, after selecting "3283" as the input mode, select range of

3283. Because it is a leak current, set the range to "100mA".
Set the trigger to "LVL", and then configure the trigger level. If you set the level to "20.00mA"
and "

", when the current exceeds 20 mA the trigger activates and then the leak current
waveform is captured. To see the waveform before the trigger point, try to set the trigger to
"50%". Until the trigger activates, the state remains as "wait for trigger".

3283 setting

Press the
the range to 100mA. Next, press the
OUTPUT key to display MON
(waveform output: AC).
If the measurement is going to take a
long time, always use the AC
adapter.

RANGE key of 3283 to set

3283 LCD

Starting a measurement

Clamp the 3283 to the location where you want to measure the leak current.
Press the [START] key to start the measurement. When the trigger activates, the leak current
waveform appears on the waveform display screen.
After the waveform equal to the recording length is captured, the state returns to "wait for
trigger". To stop the measurement, press the [STOP] key. After the measurement stops, the
current waveform last captured appears on the screen.

Trigger point

Because the recording length is set to "20 DIV" and

20 mA

Trigger activates when the current exceeds 20 mA.

Monitoring the Leak Current Waveform

the pre-trigger is 50%, 10 DIV of waveform before
and after the trigger point are captured. For details
on pre-trigger, see page 16.

Recording the RMS Value of the Leak Current

9199 CONVERSION ADAPTER

9094 OUTPUT CORD

9

9418-10 AC ADAPTER

3283 CLAMP ON LEAK PROBE

9445 AC ADAPTER

To record the RMS value of the leak current variation, set the measurement mode to "Trend".
For the time axis setting, initially setting it to "10s" would be easy to understand. For the
measurement frequency, specify one which is suitable for the region you are located. If print is
set to "ON" as well, then printing begins as soon as the measurement starts.
In the case of leak current waveform, after selecting "3283" as the input mode, select range of

3283. Because it is a leak current, set the range to "100mA".

3283 setting

Press the RANGE key of 3283 to set
the range to 100mA. Next, press the
OUTPUT key to display MON
(waveform output: AC).
If the measurement is going to take a
long time, always use the AC
adapter.

3283 LCD

Starting a measurement

Clamp the 3283 to the location where you want to measure the leak current.
Press the [START] key to start the measurement. When the measurement starts, the RMS
waveform of the leak current also prints at the same time
To stop the measurement, press the [STOP] key.

200 mArms

100 mArms

0mArms

For current measurement of the power variation, the lowest part of the screen (recording paper)
becomes 0 A.

Recording the RMS Value of the Leak Current

10

Viewing the Waveform of Power Surge/Noise at the
220 V Power Line

9197 CONNECTION CORD

9418-10 AC ADAPTER

To record the waveform of power surge/noise, set the measurement mode to "Waveform". For
the time axis setting, "2ms" would be quite satisfactory. Set the recording length to "20 DIV".
In the case of voltage waveform, after selecting "Volt" as the input mode, set the range to "200V
Line".
For the trigger, set it to "JUDGE". Next, set the reference waveform and the control width. In
this example, the reference waveform is set to "Sine50Hz" and the control range to "
The reference voltage is set to "220.0Vr" for the 220V power line.
To see the waveform before the trigger point, try to set the trigger to "50%". Until the trigger
activates, the state remains as "wait for trigger".

25.00V".

Selection

DMM

Move the cursor

Measurement

mode

カード

Measurement Start

Make sure the power recorder's connecting cord is connected to the power terminal of the
power source.
Press the [START] key to start the measurement. When the width exceeds the control range,
the trigger activates and the abnormal waveform appears on the waveform display screen.
After the waveform equal to the recording length is captured, the state returns to "wait for
trigger" again. To stop the measurement, press the [STOP] key.

Trigger point

Because the recording length is set to "20
DIV" and the pre-trigger is 50%, 10 DIV of
waveform before and after the trigger point
are captured. For details on pre-trigger, see
page 16.

Viewing the Waveform of Power Surge/Noise at the 220 V Power Line

11

Waveform Detection Trigger

The waveform detection trigger function compares the measured signal with a pre-defined control
waveform range, and triggers if the signal deviates from the control range voltage. The control
range consists of a positive and negative amplitude offset from either a standard sine wave or the
previous input cycle.
The settable standard voltage and control range are limited by the voltage range setting.

Measurement data

Triggerpoint

Control range0V

For the waveform (whether it is a sine wave or a previous waveform) functioning as the reference
waveform used in creating the control range, it is a cycle of waveform starting where the cycle
begins from the time 0V is raised and then cut horizontally (raise 0 close).
(1) Sine Wave

The control range is based on a sine wave (with RMS value voltage) at the mains frequency.

(2) Previous Cycle

Set the control range to the waveform of the input waveform in the previous cycle and then
compare it with the input waveform. Use it if you do not want to set up a trigger for the warped
portion when measuring the waveform of the warped power source.

0V

Previous Cycle (one cycle)
The control range is applied to this
cycle's waveform

Input Waveform (one cycle)
This cycle is compared with the previous
cycle for detection

Control range for printing

If the reference waveform used for creating the control range is a sine wave (50/60 Hz), when the
waveform judgement trigger activates and printout results, one cycle of the control range (gray
part) is also printed at the same time as the abnormal waveform.
This is useful when you want to find out how much the deviation from the control range is.

Triggerpoint

Viewing the Waveform of Power Surge/Noise at the 220 V Power Line

12

Viewing the Voltage Waveform of the 440 V Power Line

9418-10 AC ADAPTER

9418-10 AC ADAPTER

9322 DIFFERENTIAL PROBE

The voltage waveform of the 440 V power line can be measured by using the 9322
DIFFERENTIAL PROBE. Set the measurement mode to "Waveform". For the time axis setting,
set it to "2ms". Set the recording length to "20 DIV".
When the 9322 is used, after selecting "9322" as the input mode, set the range to "400V Line".
Set the output switch of the 9322 main unit to "DC".

Selection

DMM

Move the cursor

Measurement

mode

カード

Measurement Start

Make sure the power recorder's connecting cord is
connected to the power terminal of the power source.
Then, press the [START] key to start the measurement.
A voltage waveform appears on the waveform display
screen.
To stop the measurement, press the [STOP] key.
After the measurement stops, the voltage waveform last
captured appears on the screen.

Viewing the Voltage Waveform of the 440 V Power Line

13

(

g)

Recording the Abnormal Waveform while Recording the
Power Variation

During the instantaneous waveform recording in the power variation mode, transient phenomenon
which occurs during the actual value recording of the power variation (voltage or current) can be
recorded at high speed using the waveform level.

In the Basic Setting screen of the RMS Trend Measurement mode, if the instantaneous
waveform recording (Memory Record) is set to "ON", the time axis and recording length settings
become available. The recording length (recording time) determines the number of
instantaneous waveforms to capture.
In this example, the time is set to "2ms" and recording length to "20 DIV". The input setting is
set to "Volt", the input range to "200V Line", and the display position to "Std".
When the instantaneous waveform recording is ON, the instantaneous waveform trigger can be
set at the CH SETTING screen. In this example, the RMS level trigger is used. The trigger
activates when the voltage drops below the voltage set; and the instantaneous waveform is
captured. The RMS value level is set to "190.0 Vr", and the slope to "

Instantaneous Waveform Recordin

Transientphenomenon

: falling edge".

250 V

200 V
190 V

150 V

DMM

Move the cursor

Selection

Measurement

mode

Starting the measurement

Press the [START] key to start the RMS Trend recording
of the power variation. While recording, the trigger
activates when the RMS value drops by 190V.
Because the instantaneous waveform recording length is
set to "20 DIV", when the trigger activates, the waveform
data equal to "20 DIV" is captured, starting from the
trigger point.
If the recording length is 20 DIV, 16 phenomena of
instantaneous waveform data can be captured.
If there are more than 16 phenomena, then data cannot
be captured even if the trigger activates.

カード

Recording the Abnormal Waveform while Recording the Power Variation (Instantaneous Waveform Recording)

14

Displaying the instantaneous waveform

Press the [STOP] key to end the measurement.
If the instantaneous waveform recording is ON, then when you press the [DISP] key in the
waveform display screen of the RMS Trend Measurement mode, the screen switches between
RMS screen and MEM screen.
The voltage waveform last captured appears on the instantaneous waveform screen.

DISP

TREND RMS screen TREND MEM screen

Switching the instantaneous waveform

At the RMS Trend Measurement mode's instantaneous
recording screen, press the channel select key (CH1).
When multiple waveforms are captured, they are displayed in
the following way according to the sequential save.

The displayed number indicates the block in the diagram
which appears in reverse color. This block is the waveform
currently displayed on the waveform display screen.

To change the display, move the flashing cursor to the
number's position or directly to the block's position ( ), then
press the

TREND MEM screen

/ key to confirm.

Recording the Abnormal Waveform while Recording the Power Variation (Instantaneous Waveform Recording)

Application Examples on 220 V Line Power Monitoring

g

In this example, the 220 V line's voltage waveform, current waveform, and leak current waveform
are monitored simultaneously; when abnormal situation arises they are measured at the same
time. This example uses CH1 to measure the voltage waveform, CH2 the current waveform and
CH3 the leak current waveform.

First, press the SET key to display the Basic Setting screen.
Use the
Measurement.
Use the cursor key and the
"5ms" and the recording length to "50 DIV".

CH1 SETTING

Use the CH SET or CH1 key to display the CH1 SETTING
screen. Next, use the cursor key to move the flashing cursor and
then use the
in the illustration.

CH1 Trigger Setting

Use the voltage drop trigger and change the setting so that when
the volta

key to set the measurement mode to Waveform

/ key to set the time axis to

/ key to change the settings to the ones shown

edropbelow 190Vrms the trigger activates.

15

CH2 SETTING

Use the CH SET or CH2 key to display the CH2 SETTING
screen. Next, use the cursor key to move the flashing cursor and
then use the
in the illustration.

CH2 Trigger Setting

Use the level trigger and change the setting so that when the
current exceeds 80A the trigger activates.

CH3 SETTING

Use the CH SET or CH3 key to display the CH3 SETTING
screen. Next, use the cursor key to move the flashing cursor and
then use the
in the illustration.

CH3 Trigger Setting

Use the level trigger and change the setting so that when the
leak current exceeds 30 mA the trigger activates.

Press the [START] key to start the measurement.
If even one of the three channels meets the trigger conditions, the
trigger activates and the waveform is captured.

/ key to change the settings to the ones shown

/ key to change the settings to the ones shown

After the waveform equal to the recording length (20 DIV) is
captured, the state returns to "wait for trigger".

Application Examples on 220 V Line Power Monitoring

16

gg

gg

ド

Viewing the Waveform before the Trigger Point
(Pre-Trigger)

The pre-trigger function serves to record the waveform not only after but also before triggering has
occurred.
In the Waveform measurement mode, using the recording start point as 0% and the recording end
point as 100%, the trigger point can be specified in percent. When all trigger sources are set to
OFF, the pre-trigger setting is invalid.

Triggerpoint

Pre-trigger: 10%

10%

Pre-tri

Pre-tri

・

In Waveform measurement mode, when the pre-trigger is set, the trigger will not be registered

er: 50%

50%

er: 100%

100%

for a certain period after the start of measurement. (During this interval, Pre-trig wait is shown
on the Waveform display screen.)

・

When the trigger can be registered, the indication Wait for trig is shown on the waveform display
screen.

If the recording length is 20DIV, pre-trigger 10% = 2 DIV and pre-trigger 50% = 10 DIV.

Selection

DMM

Move the cursor

カー

Viewing the Waveform before the Trigger Point (Pre-Trigger)

HIOKI 8714-01/8715-01 POWER HiCORDER

Measurement Guide

Publication date: August 2000 Edition 1
Edited a n d published by

Technical Support Section
All inquiries to Sales and Marke ting International Department

81 Koizumi, Ueda, Nagano, 386-1192, Japan
TEL: [phone] / FAX: [phone]
E-mail: [e-mail]
URL http://www.hioki.co.jp/

Printed in Japan 8714A983-00

All reasonable care has been taken in the production of this manual, but if you
find any points which are unclear or in error, please contact your supplier or
the Sales and Marketing International Department at

In the interests of product development, the contents of this manual are subject
to revision without prior notice.

Unauthorized reproduction or copying of this manual is prohibited.

HIOKI E.E . CORPORATION

HIOKI

headquarters.

HEAD OFFICE

81 Koizumi, Ueda, Nagano 386-1192, Japan
TEL [phone] / FAX [phone]
E-mail: [e-mail]
URL http://www.hioki.co.jp/

HIOKI USA CORPORATION

6 Corporate Drive, Cranbury, NJ 08512, USA
TEL [phone] / FAX [phone]

8714A983-00 00-08-H

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