MEWOI 8000 User manual

MEWOI 8000,MEWOI8000B
Large Caliber Leakage Clamp Meter
www.mewoi.com

CONTENT
Warning................................................................................................... 1
Ⅰ.Introduction........................................................................................ 2
Ⅱ. Model................................................................................................. 2
Ⅲ. Electrical Symbols........................................................................... 3
Ⅳ. Technical Specification ................................................................... 3
1．Switch On/Off............................................................................ 5
2．Backlight Control....................................................................... 5
3．Data Hold/Storage...................................................................... 5
4．Data Access/ Exit ....................................................................... 6
6．Delete Data................................................................................. 6
7．Leakage Current/Current/Voltage Measurement........................ 6
Ⅴ. Battery Replacement...................................................................... 8
Ⅵ.Accessories...................................................................................... 9

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Warning
Thank you for purchasing our MEWOI 8000B Large Caliber Leakage Clamp
Meter, in order to better use of this product, be sure to:
----To read this user manual carefully.
----Comply strictly with safety rules and precautions set out in this manual.
Pay special attention to safety under any circumstances while using the
instrument.
Take note of the label text and symbols on the panel and back of the
instrument.
Keep the clamp clean and maintain regularly.
Please don’t place and store the instrument at the place with high
temperature, humidity, moisture condensation and straight sunlight for a
long time.
Replace battery in time when the battery voltage is low.
Remove or replace the battery if you expect not to use the instrument for a
long time.
Take note of the polarity when replace the battery.
The operation, demolition, calibration and maintenance of the instrument
must be carried out by qualified personnel authorized to do so.
The meter should be stopped from being used immediately and sealed if
danger is brought up in case of continued use; only a competent body can
be authorized to deal with it.
“ ” in the manual is the safety warning sign, the contents of this manual
must be followed for safe operation.
“ ” and other safety signs, the contents of this manual must be followed
for safe operation.

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Ⅰ.Introduction
MEWOI 8000 series of Large Caliber Leakage Clamp Meter is well
designed and manufactured for measuring AC leakage current, current,
voltage, adopt the latest CT technology and digital integrated technology. Its
large caliber 80mm×80mm can clamp electric cable of 80mm diameter, or
96mm ×4mm flat cable and steel earth wires. Full automatically and
simultaneously measure one leakage current and three voltages, all the data
are displayed in the screen, which is very clear and convenient. The meter is
widely used in electric power, communication, meteorology, railway, oil field,
architecture, measuring, teaching research unit, industrial mining enterprises,
etc.
MEWOI 8000 series of Large Caliber Leakage Clamp Meter’s clamp
core is made of special alloy, adopt the latest magnetic shielding techniques,
can almost shield the influence from external magnetic field, to ensure the
high precision, high stability and high reliability of perennial uninterrupted
measurement. The meter can store 200 sets of data, with RS232 interface,
upload stored data to the computer through the system software,
implementing online real-time monitoring, historical inquires, dynamic display.
With the function of historical data read, preserve, print, and backlight, data
hold, etc. It is a necessary tool for electrical safety testing.
Ⅱ. Model
Model
Measurement Range
Resolutio
n
Clamp
Size
MEWOI8000
AC0.00m～1200A
0.01mA
80×80m
m
AC 0.00V～600V
0.01V
MEWOI8000B
AC0.00m～2000A
0.01mA
AC 0.00V～600V
0.01V

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Ⅲ. Electrical Symbols
Extremely dangerous! The operator must strictly abide by the safety
rules; otherwise there is risk of electric shock, resulting in bodily
injury or fatalities.
Dangerous! The operator must strictly abide by safety rules;
otherwise there is risk of electric shock, resulting in bodily injury or
fatalities.
Warning! Safety rules must be strictly abided by, otherwise personal
injury or equipment damage may be caused.
Alternate Current（AC）
Direct Current（DC）
Double Insulation
Ⅳ. Technical Specification
Function
Measure AC leakage current, current, there-phase,
voltage
Power
6V DC(LR6×4 alkaline dry batteries, continuously
working for 12 hours)
Test Mode
Clamp CT, integral mode
Clamp Size
80mm×80mm(can clamp electric cable of 80mm
diameter, or 96mm×4mm flat cable and steel earth
wires)
Measurement
Accuracy
(23℃±3℃,
below 70%RH,
measured wire
at the center of
the clamp)
0.00mA～300A: ±1.5%±3dgt
300A～1200A: ±2%±3dgt
1200A～2000A: ±3%±3dgt
0.00V～600V: ±1.5%±3dgt
Measured Wire
Position
Measured wire at approximately the geometric center
of the clamp
Data Storage
200 sets, “FULL”symbol indicate the memory is full
RS232 Interface
With RS232 interface, download data to computer for
analysis and management
Communication
RS232 communication wire, 1.8m

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Wire
Frequency
50Hz ,60Hz automatic identification
Gear Shift
Automatic shift
Sample Rate
About 2 times/second
Line Voltage
Below AC 600V line measurement
Display Mode
LCD: 128dots×64dots; Display area: 43mm×29mm
Meter Size
Length 275mm ×Width 145mm ×Height 40mm
Backlight
Controlled by LIGHT key
Data Hold
“HOLD”symbol appears
Overflow
“OL”symbol appears
Automatic
Shutdown
Automatically shutdown about 15 minutes after power
on to reduce battery consumption
Voltage
Detection
Low battery symbol “ " appears to remind the
replacement of battery when the battery voltage drops
below 5.2V.
Weight
1kg(with batteries and accessories)
Working
Current
50mA with enabled backlight; 25mA with disabled
backlight
Working
Temperature
and Humidity
-10℃～40℃; 80%rh
Storage
Temperature
and Humidity
-10℃～60℃; below 70%rh
Insulation
strength
AC 2kV/rms(between core and shell)
Safety
Specifications
IEC1010-1, IEC1010-2-032, 2 class of pollution, CAT
Ⅲ(600V)
Ⅴ. Instrument Structure
1. Clamp 2. Function keys area
3. LCD display 4. Voltage input interface
5. Opening lever 6. RS232 interface
7. Housing screw (6 pieces) 8. Battery cover
9. Battery cover screw (1 piece)

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Ⅵ. Method of Operation
1．Switch On/Off
Press POWER key to switch on, LCD display, in test mode, press
POWER key to switch off. The meter will automatically power off after
booting 15 minutes later. If LCD display is darker, maybe the battery
voltage is too low, please replace batteries.
In data hold mode, firstly press HOLD key to cancel the lock, then
press POWER key to switch off.
2．Backlight Control
After booting, press LIGHT key to control the backlight, suitable for dim
places and night, default open after booting.
3．Data Hold/Storage
In test mode, press HOLD key to lock currently displayed value and
display “HOLD “symbol. At the same time, this locked value as a set of data

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followed by auto-ID and store, display the group number such as “SAVE NO.：
001”, and then press HOLD key to cancel the lock, “HD”symbol disappear,
then continue to measure. Loop operation, the meter can store 200 sets of
data. If the memory is full, display “FULL”symbol.
4．Data Access/ Exit
In test mode, press MENU key to access data inquiry form group “R：001”,
and display “READ” symbol. It is allowed to rapidly navigate to the desired
page number. Press “△”key to increase the page number by one, press ”▽”
key to increase the page number by ten. Press MENU key to exit date inquiry,
back to test mode.
5．Data Upload
Connecting the meter and computer with USB-RS232 communication
line attached in package. Start up the meter, run software, choose history
access, then read, save, report, print history data, etc. The more data storage,
take the longer time to read it. Historical data can be saved in Txt text or Excel
format.
6．Delete Data
At the date inquiry mode, press CLEAR key to access deleting data
menu, then press“◁”or “▷”keys to move the cursor to “YES”or “NO”item.
Press MENU key to confirm deletion or return to the test mode.
7．Leakage Current/Current/Voltage Measurement
High voltage, very dangerous！Only qualified personnel
after training could conduct operation on it. The operator
should obey safety regulations; Otherwise there will be the
danger of electric shock resulting in personal injury or
casualty.
Dangerous! Can not be used to test voltage higher than
600V. Otherwise there will be the danger of electric shock

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resulting in personal injury or casualty.
Make sure the clamp well closed when measuring leakage
current and current.
Make sure the measured wire at approximately the
geometric center of the clamp.
Clean the clamp after finishing measurement, regularly
maintain the meter.
Be sure to connect test wires correctly when measuring
voltage to avoid short circuit.
After measuring voltage, should firstly take the test line
away from measured wire, and then draw from meter, in
order to avoid shock.
Clamp live wire and null line together to measure leakage
current of electric equipment. (Note: 2 wires)
Clamp earth wire to measure grounding line leakage
current of electric equipment. (Note: single wire)
Clamp four wires of there phase to measure the total
leakage current. ( Note: 4 wires)
Clamp main line to measure total current of that main line.
(Note: single wire)
Test reference illustrations:
Test
power
safety
Test leakage
of bury cable
in wall Test equipment
safety operation
Test
ground
leakage
Ground

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Ⅴ. Battery Replacement
Warning! Make sure the battery cover is well closed
before measurement, otherwise there will be danger.
Take note of the battery polarity, otherwise it may
cause damage to the instrument.
If the battery power is not enough, please change in
time.
Take out the batteries if you expect not to use the
meter for a long time.
1．“ ”is displayed when the power voltage is lower than 5.2V, indicating
that the battery should be replaced.
Measuring Box
Test phase current and voltage

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2. Press POWER key, make sure the meter is power off. Loosen the battery
cover screw, open the plate, replace new batteries and cover the plate,
then tighten screw.
3. Press POWER key to check whether the batteries are successfully
replaced, repeat step 2 if it doesn’t work.
Ⅵ. Accessories
Main Unit
1 piece
Meter Box
1 piece
Test Line
4 pieces (3 red, 1 black)
RS232 Data Line
1 piece
Disk
1 piece
Battery
4 pieces（Alkaline Dry Battery LR6）
User Manual
1 piece
Guarantee Card
1 piece
Certification
1 piece

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