8808-51 Data Sheet
MEMORY HiCORDER 8808-51
Recorders
Instantaneous Analysis and Long-term Recording of Harmonic
Waves for Maintenance of Commercial Power Systems
Are the harmonics in your company's power lines in
order?
The 8808-51 is an economical tool that will clearly
identify and analyze the current harmonic state of your
power system.
To the 8808- 01 MEMORY HiCORDER with their popular
detachable printers, HIOKI has added the 8808-51 MEMORY
HiCORDER with harmonic analysis function. Capable of both
instantaneous analysis and time series recording of harmonics,
this unit can measure and analyze harmonic current flowing
into and out of a commercial power system, as well as harmonic
components piggybacking on power line voltage.
Instantaneous harmonic analysis
• Can measure harmonics up to 40 orders from the fundamen-tal
wave
• Analysis display includes RMS value, content factor, phase angle,
active power, and power phase angle for each order of harmonics
(numeric and graphic display)
• Analysis display of total RMS value, total distortion, active/
reactive/apparent power, and power factor (numeric display)
• Bar graph and numeric data display
• Power phase angle can be displayed as a vector
Time series recording
• Harmonic analysis of up to 20 items
• Data recorded in time series
• When analyzing four items
simultaneously, data can be recorded for
up to 150 days
Flexible connection options
• Supports independent channels, singlephase two-wire, single-phase three-wire,
and three-phase three-wire
• Full isolation of all analog channels
Useful measurement functions
• Connection check
• Level check
• Over-range function
Waveform
Direct read-out of current through general-purpose clamps
Bar graph
Numeric data
Power vector
• Compatible with HIOKI's 9018-50 and 9132- 50 CLAMP-ON
PROBE
This catalog is dedicated to featuring the harmonic wave analysis functions of Model 8808 -51, functions that are not included in the standard
Model 8808 -01. As the waveform recording functions of Model 8808 -51 is identical to the Model 8808 -01, please refer to the catalog for the
latter model for detailed descriptions.
2
Use the 8808-51 to determine the current
- Harmonic Wave Functions Harmonic wave instantaneous analysis mode
The 8808 -51 can analyze harmonic components
(up to 40 orders from the fundamental wave) that
are included in voltage and current in a power
line with a base frequency of 45 to 65Hz. Based
on the waveform that was captured, the 8808 51 can analyze the RMS value, content factor,
phase angle, active power, and power phase angle
for each order of harmonics. The measurement
results can be displayed and recorded as a bar
graph, numeric data, or power vector diagram.
The 8808 -51 can also display numerically the
total RMS value, the total distortion, the active/
reactive/apparent power, and power factor.
▲Captured waveform
(waveform display screen)
▲RMS value of harmonic wave
(bar graph)
▲Content factor of harmonic wave (numeric data)
Time series analysis mode for continuous measurement of changes in harmonics
This mode is used to continuously measure changes in the
RMS value, content factor, phase angle, active power, and total
distortion for each order of harmonics. Measurements are made
at specific intervals and are displayed and recorded as a graph.
Through long-term monitoring of the correlation between the
timing of harmonic waves and their relationship to phenomena,
the 8808 -51 become useful tools for finding the causes of
harmonic interference and taking appropriate action.
Time series graph display screen
In time series recording mode, the 8808 -51 is capable
of recordi ng up to 20 ha r mon ic wave a na lysis items
simultaneously. The recording time can be set over a range
of 30 minutes to 150 days and the data is stored in internal
memory. If "continuous" is set as the recording time, the
8808 -51 is able to draw a continuous graph on recording
paper. Only the measurements for the last 60 divisions are
stored in internal memory.
Harmonic analysis item settings
▲Time series analysis printout example
This time series graph shows four of the analysis items that were recorded.
3
state of harmonic waves
Harmonic wave power measurement on single-phase
two-wire, single-phase three-wire*, and three-phase
three-wire* lines
Determine the direction of flow of harmonic waves
Power vector diagram
Power content factor (bar graph)
The 8808-51 allow you to input
voltage on channels 1 and 3
and current on channels 2 and
4 (through the clamp-on probe)
and then display a power vector
diagram for each harmonic
wave. This diagram can then
be used to determine whether
the harmonic waves are flowing
from the power supply system or
from the load.
The 8808 -51 is capable of
measurement of single-phase threewire, dual single-phase two-wire,
and three-phase three-wire lines.
This unit can display numeric data
or a graphs for the active power,
active power content factor, and
power phase angle for each order of
harmonics. Because all analog input
channels are isolated, no problems
are encountered when measuring
two different single-phase twowire systems simultaneously, or if
connections are made incorrectly.
- Product Specifications -
Note: The waveform recording functions of the 8808-51 MEMORY HiCORDER is identical to the 8808-01 MEMORY HiCORDER. For details on
specifications other than those concerning the harmonic wave analysis functions, refer to the catalog for the 8808-01 MEMORY HiCORDER.
Instantaneous analysis mode
General specifications for the harmonic wave analysis section
Connection types
Input settings
Independent channels:
Voltage, 9018, 9132, 3283, 3284, 3285, 9322
Other connections:
Possible with even channels set to voltage and odd
channels set to current.
When measuring power, the following conditions must be
met:
(1) The input type on the channel used for measuring
current must be set to 9018 or 9132.
(2) The input type on the channel used for measuring current
must be set to voltage with current scaling.
(The clamp probe that is used must have good phase accuracy.)
Fundamental
frequency range
45Hz to 65Hz
Automatic setting or manual setting (0.1Hz resolution)
Number of orders for analysis Fundamental wave to 40th order
Analysis frequency band 45Hz to 2.6kHz
(on "×1" display)
Fundamental wave to 20th order: ±3.5˚
21st order to 40th order: ±7.5˚ (with content factor of 10%)
Phase accuracy*3
Fundamental wave to 20th order: ±3.5˚
21st order to 40th order: ±7.5˚ (with content factor of 10%)
Amplitude accuracy*3
*3 When using a clamp-on probe, add the accuracy of the probe.
Number of FFT operations 512 points (sampled during one cycle of the fundamental wave)
Vertical axis enlargement/
compression
For any harmonic wave order number: RMS value/content factor/
phase angle/active power*4/active power content factor*4/power
phase angle*4
Total RMS value, total distortion-F*5, total distortion-R*6, active
power*4, apparent power*4, reactive power*4, power factor*4
Supplemental functions
When using a HIOKI Clamp-on probe, the current value
can be read directly, and can be set as desired.
Wiring and level
check functions
Measurement target auto range function, checking for
reversed wiring, determination of phase sequence for threephase, three-wire connection
Over-range function
Automatically lowers the range sensitivity if the input
range is exceeded while taking measurements.
Tabulated results
output
Miscellaneous
Trigger mode
Sources
Recording time
(Time series analysis mode only)
Cursor measurement, screen scrolling
Single, repeat
Permits selection of up to four types of harmonic wave
triggers; trigger conditions can be set for each type of
trigger. (Harmonic wave trigger sources are ORed together, while harmonic
wave triggers are ANDed with external triggers and timer triggers.) Free-run
operation when all triggers are OFF.
Trigger types
RMS value/content factor/active power value/power phase
angle/total RMS value/total distortion-R/total distortion-F
of any harmonic wave
Miscellaneous
Pre-trigger: 0, 5, 10 DIV. (time series analysis mode)
Trigger timing: start only
Harmonic wave analysis function recording time*1
Time axis
* Only when single-phase two-wire, single-phase three-wire, or three-phase threewire is selected.
*5 Ratio of all harmonic waves to fundamental wave
*6 Ratio of all harmonic waves to total RMS value
Time axis
Can output a list of maximum and minimum values for the
results of each analysis across all recording times.
Harmonic wave trigger function
4
Number of simultaneous
analyses
Six levels of enlargement, from ×2 to ×100; one level of
compression, to 1/2; logarithmic scale
Scaling
Scaling, cursor measurement, wiring and level check function
Time series analysis mode
Analysis types
*4 Only when single-phase two-wire, single-phase three-wire, or three-phase three-wire is selected.
*5 Ratio of all harmonic waves to fundamental wave
*6 Ratio of all harmonic waves to total RMS value
Analog 12 bits × 16 kwords/channel
Harmonic waveform
32 bits × 96 kwords
operation memory capacity
Function
Analysis types
*3 When using a clamp-on probe, add the accuracy of the probe.
Sampling frequency 400kS/s fixed
Waveform memory capacity
Numeric data + graph: harmonic wave RMS value, harmonic
wave content factor, harmonic wave phase angle, harmonic wave
active power*4, harmonic wave active power content factor*4,
harmonic wave power phase angle*4
Numeric data only: Total RMS value, total distortion-F*5,
total distortion-R*6, active power*4, apparent power*4, reactive
power*4, power factor*4
Independent channels, single-phase two-wire*1, singlephase three-wire, and three-phase three-wire
*1 8808-51 permits simultaneous analysis of two systems
5 min./DIV
Storage in internal memory
(Number of analysis items is reduced depending on recording length)
5 hours (20 items) to 1 day (4 items)
Up to 20 analyses (any combination); only four can be
simultaneously displayed or printed
10 min./DIV 10 hours (20 items) to 2 days (4 items)
Depends on time axis and number of simultaneous analyses
3 hour./DIV 7 days (20 items) to 37 days (4 items)
30 min./DIV 1 day (20 items) to 6 days (4 items)
5 minutes/12 hours/DIV, 7 ranges (80 samples/DIV)
Printing types
Dotted line graph or numerical data for each analysis value (time display)
Enlargement/
compression
Vertical axis: Six levels of enlargement, from ×2 to ×100;
one level of compression, to 1/2; logarithmic scale
Time axis: Two levels of enlargement, ×2 or ×4; six levels
of compression, from 1/2 to 1/48
1 hour./DIV 2 days (20 items) to 12 days (4 items)
6 hour./DIV 14 days (20 items) to 75 days (4 items)
12 hour./DIV 30 days (20 items) to 150 days (4 items)
*1
*2
*3
*4
Printing on paper without recording in memory *2
(Final 60 DIV are recorded in internal memory.)
6 days + 3.5 hours (4 items)
12 days + 7 hours (4 items)
36 days + 21 hours (4 items)
73 days + 18 hours (4 items)
221 days + 6 hours (4 items)
1 year + 77 days (4 items) *3, *4
2 years + 155 days (4 items) *3, *4
For the paper length, it is assumed that 1770 DIV will not use more than 30cm of paper.
Only a maximum of four items can be printed on paper.
One year is assumed to be 365 days.
The recording times shown in the table are simply the calculated values. If measurements are taken over several years,
wear on the equipment will begin to have an effect. Therefore, operation cannot be guaranteed.
4
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■ Harmonic wave time series recording example Each order can be graphed.
ib
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This graph shows that harmonic waves begin to decrease at 4:00 p.m., and then begin to
increase at 6:30 a.m. the next morning.
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■ Abnormal waveform
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8 -51 can
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from a 40 N LEAK HiTEST BE 9322. In additi rement data in th
CL AMP-O FERENTIAL PRO ible to store measu
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a PC.
the data to
■ Example of data analysis on a personal computer
Data stored in text format in a PC card can be loaded directly into spreadsheet software on a PC.
If the data is in binary format, it must first be converted into text format.
Configuration of options Note: Product names appearing herein are trademarks or registered trademarks of various companies.
Removable storage (CF card)
PC Software
Supplied with PC
Card adapter
CARRYING CASE 9391
Soft case type, for storing options.
Holds more options than the 9648
hard case.
CARRYING CASE 9648
Hard case type, for storing
options
WAVE PROCESSOR 9335
4-channel type, for voltage/
contact signal ON/OFF
detection (response time 0.5
μsec, miniature terminal type)
................ Cannot be used
PC Card Precaution
RS-232C CABLE 9612
CONVERSION CABLE 9323
LOGIC PROBE 9320-01
PC CARD 2G 9830
Convert data, print and display waveforms.
Windows 2000/XP/Vista (32-bit), Windows
7 (32-bit/64-bit)
LOGIC PROBE 9321-01
4 isolated channels, ON/
OFF detection of AC/
DC voltage (miniature
terminal type)
Used for connecting the 9320/9321
and 8808 series MEMORY
HiCORDERs, because the terminal
shapes are different.
* This cable is not required for the
small-terminal types 9327, 9320-01,
and 9321-01.
Mini DIN 9-pin - Dsub 9-pin,
Cable length 1.5 m (4.92 ft)
length.
Voltage measurement
Recommended
Use only PC Cards sold by
HIOKI. Compatibility and
performance are not guaranteed
for PC cards made by other
manufacturers. You may be
unable to read from or save data
to such cards.
Input cable for measurement use is not provided.
Please purchase the optional cable.
ALLIGATOR CLIP 9790-01
Red/black set attaches to the
ends of test leads (9790)
GRABBER CLIP 9790-02
Red/black set attaches to the
ends of test leads (9790)
CONNECTION CORD 9790
Voltage
MEMROY HiCORDER 8808 -51 (4ch model)
An The units can be operated using the supplied LR6/AA alkaline batteries but use of the optional
AC ADAPTER 9418-15 or BATTERY PACK 9447 (the AC ADAPTER 9418-15 is necessary for
recharging) is recommended. Manganese batteries cannot be used. Use of commercially available
rechargeable batteries instead of the original battery pack may result in damage to the unit.
(Thin Type) CAT II 300 V, ultraflexible 2.8 mm (0.11 in) diameter
test lead cable, 1.5 m (4.92 ft) length
Note: Attachment clips sold separately.
CONNECTION CORD 9198 CONNECTION CORD 9197
For low voltage (up to 300 V), For high voltage (up to 500 V),
1.7 m (5.58 ft) length
1.8 m (5.91 ft) length
High-Voltage measurement
For up to 2 kV DC or 1 kV AC.
Use with the AC Adapter 941815, for power supply.
RECORDING PAPER
9234
112 mm (4.41 in) × 18 m
(59.06 ft), 10 rolls set
BATTERY PACK 9447
7.2 V, 2400 mAh
Recommended
CLAMP ON PROBE
9018 -50
Enables observation of AC
current waveforms. Input: 40 Hz to 3
kHz, selectable 10 to 500 A ranges,
Output: 0.2 V AC/ range
CLAMP ON PROBE
9132-50
Enables observation of
AC current waveforms.
Input: 40 Hz to 1 kHz,
selectable 20 to 1000 A ranges,
Output: 0.2 V AC/ range
CLAMP ON LEAK HiTESTER
3283
For leakage current measurement,
includes 10 mA to 200 A ranges,
with analog output of 1 V f.s. DC,
and waveform monitor output of 1 V
f.s. AC at 40 Hz to 2 kHz. Requires
the AC adapter 9445-02/-03
For powering
Differential probe 9322,
100 to 240 V AC.
With the 3283, continuous use.
For USA, Canada: 944502, For EU: 9445-03.
OUTPUT CORD 9094
Required along with the 9199 adapter to
connect the 3283 to the 8808 series.
CONVERSION ADAPTER 9199
Insulation transformer, 400V or 200V AC
input, 10V AC output, for AC power line
measurement. Required along with the
Conversion Adapter 9199.
Banana-to-BNC, use to connect to BNC
terminal on Input Module
CONNECTION CORD 9217
Not CE marked
CHARGE STAND 9643
Independent of the 8808 series main unit,
use with the AC ADAPTER 9418-15 to
charge one Model 9447.
HIOKI (Shanghai) Sales & Trading Co., Ltd. :
HIOKI USA CORPORATION :
6 Corporate Drive, Cranbury, NJ 08512 USA
TEL +1-609-409-9109 / FAX +1-609-409-9108
http://www.hiokiusa.com / E-mail: hioki@hiokiusa.com
.......... (256 MB capacity)
Current measurement *50/60 Hz line use
PT 9303
1608-1610 Shanghai Times Square Office, 93 Huai Hai Zhong Road,
Shanghai, P.R.China POSTCODE: 200021
TEL +86-21-6391-0090/0092 FAX +86-21-6391-0360
http://www.hioki.cn / E-mail: info-sh@hioki.com.cn
HEAD OFFICE :
81 Koizumi, Ueda, Nagano, 386-1192, Japan
TEL +81-268-28-0562 / FAX +81-268-28-0568
http://www.hioki.co.jp / E-mail: os-com@hioki.co.jp
.......... (512 MB capacity)
PC CARD 256M 9727
Not CE marked
Universal 100 to 240 V AC,
12 V DC/ 2.5 A output
PAPER WINDER 220H
Paper width: 70 to 220 mm (2.76 to
8.66 in), using special-purpose AC
adapter
............... (1 GB capacity)
PC CARD 512M 9728
AC ADAPTER 9445 -02/-03
AC ADAPTER 9418-15
Not CE marked
for use with power supply
AC ADAPTER 9418-15
DIFFERENTIAL PROBE 9322
PRINTER UNIT 8992
Printing width 100 mm (3.94 in),
used together with the 8808-51
main body
CONTACT PIN 9790-03
Red/black set attaches to the
ends of test leads (9790)
PC CARD 1G 9729
Cord has insulated BNC connectors at
both ends, and connects to insulated
BNC connectors on input terminal. 1.7
m (5.58 ft) length.
LINE SPLITTER CT101A
For 100 V/ 15 A, convenient for
measuring 100 V AC line current with
clamp-on probe
DISTRIBUTED BY
Beijing Office :
TEL +86-10-5867-4080/4081 FAX +86-10-5867-4090
E-mail: info-bj@hioki.com.cn
Guangzhou Office :
TEL +86-20-38392673/2676 FAX +86-20-38392679
E-mail: info-gz@hioki.com.cn
HIOKI INDIA PRIVATE LIMITED :
Khandela House, 24 Gulmohar Colony Indore 452 018 (M.P.), India
TEL +91-731-4223901, 4223902 FAX +91-731-4223903
http://www.hioki.in / E-mail: info@hioki.in
All information correct as of Jun. 30, 2010. All specifications are subject to change without notice.
8808-51E8-06E-00KR
Printed in Korea
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