MEWOI MEWOI1000 User manual

High Voltage Clamp Leaker
MEWOI1000, MEWOI1000C
User Manual
www.mewoi.com

CONTENT
Warning................................................................................................ 1
I . Brief Introduction.............................................................................. 3
II. Electrical Symbols............................................................................ 4
III．Series Model.................................................................................. 4
IV．Technical Specification.................................................................. 5
V. Structure........................................................................................... 7
VI．LCD Display .................................................................................. 8
VII．Operation.................................................................................... 10
A. Tester Operation........................................................................... 10
1. Power On/Off........................................................................................10
2. General Test...........................................................................................10
3. PEAK Test.............................................................................................13
4. Data Maintenance..................................................................................13
5. Data Memory ........................................................................................13
6. Data Reference......................................................................................13
7. Data Deletion ........................................................................................14
*8. Data Transmission...............................................................................14
B .Operation of Receiver.................................................................. 14
1. Power On/Off.....................................................................................14
2. Data Reception...................................................................................15
3. Data Maintenance...............................................................................15
4. Data Memory .....................................................................................15
5. Data Reference...................................................................................15

6. Data Deletion ...................................................................................16
VIII. Replacing Batteries.................................................................. 16
IX.Accessories................................................................................... 17

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Warning
Thanks for your purchase of ETCR9000 series H/L Voltage
Clamp Meter of our company. In order to make better use of this
product, please make sure to:
——Read this manual in detail and the operator must
totally understand this manual and be in proficient in
operation of this meter before making test on spot.
——Strictly comply with the security rules and notice
items listed on this manual.
In any case, it should pay special attention to safety in use of
this meter, particularly in measurement of circuitry with more
than AC100V and above voltages.
If the voltage of tested circuitry has exceeded 600V, it must
be used by connecting with an insulation rod.
As it is very dangerous of high voltage transmission line, the
operator must get strict training and the relevant certification
on high-pressure operation of the state before using this meter
and making a field test.
It is strictly forbidden to use this meter to test the wire without
any insulate protection or convergence generatrix.
Please pay attention to marked words and symbols on panel
or backboard of this meter.
Please do not put or store this meter in the place of high
temperature, with moisture, with frozen dew or with direct
daylight irradiation for a long time.
Please note the battery polarity when replacing battery, and
remove the battery if you expect not to use this meter for a
long time.
It must be operated by qualified staff that has the authorization
on tearing down or repairing this meter.
Please do not use it when there is any damage on the
transducer clamp or other parts of this meter.

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To avoid the impact of transducer clamp, it needs to maintain
this meter regularly. Do not use corrosive or coarse materials
to clean, but use soft cloth (such as glasses cloth), dipping
clean anti-rust desiccant lubricant (such as WD-40), and
making a gentle wiping.
For the reason of this meter, in case that any danger may
occur if continue to use it, stop using it immediately and seal it
up for keeping at once, which shall be dealt with by qualified
authorization agency.
The danger symbol ““on the meter and the manual, the
user must make safe operation according to the indication.
The extremely dangerous symbol “ ”, the user must make
safe operation according to the indication.
It suggests that this meter shall be made insulation intensity
test at least once annually. (AC60kV/rms between insulation
pole and clamp core.)
As to the part with “*”mark in this manual, it is only limited to
ETCR9000B type (wireless Transmission data type).

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I . Brief Introduction
ETCR9000 Series H/L Voltage Clamp Meter has broken
through the traditional structure, which is specially well-designed
for measuring high voltage current, adopting the latest CT
technology and integrated mask digital technology, formed by
composition of a special use clamp meter with a high-voltage
insulation rod, as to ETCR9000B type --- wireless transmission
of test data, it is equipped with wireless receivers, which can
receive measured data within 30 meters line. If not using an
insulation rod, it can be also used as a high precision low-voltage
clamp meter, or an alternating current meter, which can accurately
measure 0.1mA of current or leakage current.
ETCR9000 Series H/L Voltage Clamp Meter has an
innovative integrated design between transducer clamp and
transducer domain, ensuring the high-precision, high-reliability,
and high-stability on constant test perennially.
ETCR9000 Series H/L Voltage Clamp Meter is connected
with insulation rod, which can be used for measuring high voltage
current that is below 60KV, on-line current measurement, also
having peak maintenance, data preservation, data storage,
wireless transmission and other functions, and its special clamp
meter can make it easier for clamping or evacuating the tested wire
through pressing or pulling back the insulation rod, time-saving
and fast, widely used in transformer substation, power plant,
industrial and mining enterprises as well as the inspection station
and electrician maintenance departments for electrical current
detection and field electrical operations. It can also replace the H/L
voltage transforming ratio tester, that is, to detect the high and low
current for primary circuit and secondary circuit separately, and
then calculate to conclude the change of high and low pressure.
The insulation rod is light and convenient, with the advantages of
anti-moisture, high temperature resistance, anti-impact, bending
resistance, high insulation, flexibility and other characteristics.

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II. Electrical Symbols
Extremely Dangerous! The operator must strictly abide
by the safety rules. Otherwise, there is electric injury
danger, causing personal damage or casualty accident.
Dangerous! The operator must strictly abide by the
safety rules. Otherwise, there is electric injury danger,
causing personal damage or casualty accident.
Warning! It must strictly abide by the safety rules.
Otherwise, it may cause personal damage or casualty
accident.
Alternating Current (AC)
Direct Current (DC)
III．Series Model
Model
Range of
measurement
Accuracy
Jaw
Specification
Description
ETCR 9000
0.00mA-1200A
0.01mA
φ48mm
Basic Type
ETCR 9000B
0.00mA-1200A
0.01mA
φ48mm
wireless

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IV．Technical Specification
Function
High voltage AC current measurement, low
voltage AC current, leakage current
measurement, on-line AC current supervision.
Power Supply
DC6V Alkaline Dry Battery (1.5V AAA X 4)
Test Method
Clamp CT, Integral Method
*Transmission
Method
B Model: Wireless Transmission, the maximum
distance for direct transmission is about 30m.
Display Mode
4 digital LCD display, backlight function,
suitable for dark place.
LCD
Dimension
47mm×28.5mm
Meter
Dimension
W/H/T: 76mm×255mm×31mm
Clamp
Diameter
φ48mm
Sampling
Speed
About 2 times/second
Range of
measurement
0.00mA~1200A（50/60HzAuto Identification）
Resolution
0.01mA
Shift
0.00mA~1200A Automatic Shift
Test Accuracy
（23℃±5 ℃，
Below 80%RH）
0.0mA~299mA: ±1%±3dgt
0.30A~49.9A: ±1.5%±5dgt
50.0A~199.9A: ±2.0%±5dgt
200A~600A: ±3%±5dgt
601A~1200A: ±4%±5dgt
Data Storage
99 Groups, during storage, the symbol “MEM”
gives indication, “FULL” mark will flash to
indicate the memory has been full.
Circuit Voltage
Test for the circuit below 60KV (operated with
insulation rod)
Peak
Maintenance
Automatically maintain the height of the test
value, usually in the test mode press PEAK
key, PEAK lights, that is, to keep open the

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PEAK function, then press PEAK key to cancel
this function
Data
Preservation
Under general test mode, press HOLD button
to preserve data, “HOLD” symbol display. then
press HOLD Key to cancel this function
Data Access
“MR” symbol indicates, it can read the stored
data by turning upwards and downwards.
Overflow
Display
Exceed measurement range overflow function:
“OL A” symbol display
* No signal
Indication
When the receiver has not received transmit
signal, it will display “no- -”symbol
Auto Shut
Down
About 15 minutes after booting, the meter will
shut down automatically, in order to decrease
the battery consumption.
Battery Voltage
When the battery voltage is below 4.8V, the
symbol of battery voltage“ ”will show to
remind to replace battery.
Weight
Tester: About 335g (Including battery), total
quality of meter: about 3Kg (including insulation
rod and battery.)
Work
Temperature
and Humidity
-10°C ~40°C ; Below 80%Rh
Storage
Temperature
and Humidity
-10°C ~60°C ; Below 70%Rh
Insulated Rod
Dimension
φ32mm，1m/Section（5 Sections）
Insulation
Intension
AC 60KV/rms (Between insulation rod and
clamp core)
Structure
Anti-Dripping Type II

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V. Structure
1. Double input toroid (including the boot area)
2. ETCR9000 Tester
3. LCD Display 4. PEAK Test Indication
5. PEAK Key 6. POWER Key
7. HOLD Key *8. ETCR9000B Receiver
9. Insulation Rod Connector *10.POWER Indication
*11.ETCR9000B Testers 12.Insulation Rods*5
*13.Anntenna

-8-
VI．LCD Display
1．LCD Display Screen
⑴.AC symbol
⑵. Low battery symbol
⑶. Date storage symbol
⑷. Date access symbol
⑸. 2-digit storage data serial number
⑹. Unit symbol
⑺. Date locked symbol
⑻. Decimal system radix point
⑼. 4-Digit LCD digital display
2．Explanation for Special Symbols
⑴.Low battery symbol, when the voltage of battery is
lower than 4.8V, this symbol display, please replace battery
in time.
⑵.“OL A”This symbol indicates that the current on test has
exceeded the maximum measurement limit of the meter.
⑶.“MEM”Memory mode, it will display during the data storage
process.
⑷.“Full” symbol, when the storage memory has been filled with
99 groups of data, it will display “FULL” symbol by flash,
which means it cannot continue to store data.
⑸.“MR”data access symbol, which is displayed during looking
up data, meanwhile, it will display the serial number of data
in storage.
⑹.“End”exit symbol, it will display during the exit.

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⑺.“dEL”data delete symbol, it will display when deleting data.
*⑻.“no- -”None received signal instructions, dynamic display, it
may not in test mode, or adjust the location and distance
from receiver.
3．Display Demonstration
⑴. ——The current on test
is 2mA
⑵. ——Locked display Data
——The data is automatic
stored as group 3
——The current on test is: 160.5A
⑶.——The current on test is: 571A
——Low battery symbol
, please replace.
⑷.——Look up data of group 3 in storage
——The current on test is: 160.5A
⑸.—— “FULL” flash display:
Storage is full of 99 groups
——It can’t store more unless
delete storage
⑹.——“dEL” Indication of data delete
⑺.—— “End” Indication of exit
*⑻.——“no- -”Dynamic display: none
received signal

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VII．Operation
Please check all parts of the meter carefully
before usage, to see whether there is any
damage. And make sure no damage before
usage.
According to manual instructions to install the
battery
A. Tester Operation
1. Power On/Off
Press POWER button to power on, the instrument will
displays the LCD screen, entering normal testing mode. If
LCD display is relatively dark after power on, it is possible that
battery voltage is a bit lower. Please replace battery. 15
minutes after powering on the meter, if it remains idle, an
auto-power off procedure starts to preserve the battery life and
LCD will continue flash until the complete switch off takes
place after 30 seconds. In case of LCD continuous flash,
press POWER button, then the meter will continue to work.
Under HOLD mode, press POWER button for power off.
Under general test mode, press POWER button to power off.
Under PEAK testing mode，press POWE button to power
off. Under data reference mode, firstly press POWER button
for more than 3 seconds to exit from data reference mode,
returning to normal test mode, then press POWER button to
power off. During the exit from data access, it will display
“End” symbol.
2. General Test
High voltage, extremely dangerous! It must be
operated by qualified staff that has acquired
authority. The operator must strictly abide by the

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safety rules. Otherwise, there is electric injury
danger, causing personal damage or casualty
accident.
Dangerous! It is strictly forbidden to test bare
conductors or bus buses with voltage exceeding
35kV, otherwise there will be electric shock
danger, causing personal injury or equipment
damage.
Dangerous! It cannot be used to measure the
circuit over 1200A voltage. Otherwise, there is
electric injury danger, causing personal damage
or equipment damage.
General Test: In the process of test, LCD will display the
tested current value real time, and LCD data will vary with the
current change. When the tester is removed away from the
lead on test, it does not preserve the test result, LCD display
will return to zero.
In normal testing mode, it is suitable for close distance
measurement, convenient for circuit test by direct read of LCD
data.
Before test, firstly to connect insulation rod,
which must be connected in right position, and
then to connect tester, avoiding the impact of
meter to ground surface.
Make sure to use specially equipped insulation
rod to connect with the meter.
After test, it should incline the insulation rod
accordingly on drawing in. Firstly to tear down
the tester and then the insulation rod, avoiding
the impact of meter to ground surface.
After normal boot, place the lead in the middle of clamp
transducer domain, as shown in Figure A, with the meter
transducer domain perpendicular to the lead, pushing the
meter forwards to clamp the lead on test, showing the result
on LCD display. If showing "OL A", it means the lead current
on test has exceeded the maximum volume on the level.
Please select a higher gear level or a meter with greater
measurement limit.

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To pull backwards can make the meter remove from the
lead on teat, as shown in Figure C, please try to keep the
meter transducer domain perpendicular to the lead when
moving away .
Under HOLD mode, press HOLD button to cancel HOLD
function, and return to normal testing mode.
Under data reference mode, press POWER button for
more than 3 seconds to exit from data reference mode,
returning to normal testing mode.
Under PEAK testing mode, press POWER button to exit
from PEAK testing mode, returning to normal testing mode.
After data deletion, it will return to normal testing mode
automatically.
Attention! For the sake of safety, when test has
been finished, please remove the meter away
from the lead on test.

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3. PEAK Test
PEAK test: the maximum current test. The meter will make
automatic comparison on the changes in measured current,
indicating the maximum value and maintain it, when the meter
is removed away from the lead on test, the test result will be
kept consistently, suitable for the circuit test on those LCD data
hard to be read directly.
Under the normal testing mode, press PEAK button，
PEAK indication light will be bright,，enter PEAK testing mode.
That means the meter will display and automatically keep the
maximum value in the test.
Under any other mode, it must be returned to normal
testing mode, and then make PEAK testing according to the
above operation.
Press POWER button to exit from PEAK testing mode,
returning to normal testing mode, and it will display “End”
symbol during the exit.
4. Data Maintenance
Under normal testing mode, press HOLD button to keep
LCD display, “HOLD”symbol displays. Press HOLD button
again to release data lock, returning to normal testing mode,
and “HOLD”symbol disappears.
5. Data Memory
Under normal testing mode, press HOLD to storage data,
at the same time, Meter will automatically form serial numbers,
and memory the current preserved data. During the storage,
“MEM”symbol will show once by flash. This meter can
memory 99 groups of data, in case of full storage, “FULL”
symbol will display by flash continuously, and it cannot
continue to memory until cleaning out the previous memory.
6. Data Reference
Under normal testing mode, press PEAK + POWER
button to enter data reference mode, displaying “MR”symbol,
meanwhile, it will automatically display data saved in the group
01. Then press PEAK or POWER button to read the stored

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data by turning upwards or downwards in cycle. It will return to
the group 1’s data automatically after reaching the last group’s
data in storage.
Press HOLD button to exit from data reference mode,
returning to normal testing mode. During the exit, it will display
“End” symbol.
7. Data Deletion
Under data reference mode, press PEAK + POWER
button to delete all the data in storage, and return to normal
testing mode. During the deletion of data, it will display “dEL”
symbol.
*8. Data Transmission
B Type: has the function of wireless data transmission.
When the Meter under testing mode, the test result will be
transferred to receiver by wireless transmission and the
receiver will display test result real time, being clear at a
glance.
Only under testing mode, the meter will transmit, If the
receiver has not received emission signals, it will display “no -
-” symbol dynamically.
B Type: Transferred
ETCR9000B Type: Wireless transmission test data, a
straight-line distance of about 30 meters, can penetrate the
floor to receive data.
B .Operation of Receiver
(Note: For ETCR9000B only)
1. Power On/Off
Press POWER button to power on, the instrument will
displays the LCD screen, entering normal testing mode. If
LCD display is relatively dark after power on, it is possible that
battery voltage is a bit lower. Please replace battery. 15
minutes after powering on the meter, if it remains idle, an
auto-power off procedure starts to preserve the battery life and
LCD will continue flash until the complete switch off takes
place after 30 seconds. In case of LCD continuous flash,

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press POWER button, then the meter will continue to work.
Under HOLD mode, press POWER to power off.
Under data reference, first, press POWER button( for 3
seconds ) to exit data reference mode, then come back to data
receive mode, press POWER button once again to power off.
During exit from data reference, it will display the symbol of
“End”.
2. Data Reception
After normal power on, the receiver will under receiving
mode. If there are emission data, the receiver will display the
test result real time. If it has not received any signal, the
receiver will search signals constantly, and display “no-
-”symbol dynamically.
3. Data Maintenance
Under Data Reception mod, press HOLD button, keep
LCD display, “HOLD” symbol indication. Press HOLD button
once again to relieve data lock, return to data reception mode,
“HOLD” symbol display.
4. Data Memory
Under Date Reception mode, press HOLD button to
maintain data, meanwhile, the receiver will automatically form
serial numbers, and memory the current preserved data.
During the storage, “MEM”symbol will display once by flash.
The receiver can memory 99 groups of data, in case of full
storage, “FULL” symbol will display by flash continuously, and
it cannot continue to memory until cleaning out the previous
memory.
5. Data Reference
Under Data Reception mode, press HOLD+POWER
button to enter Data Reference mode, “MR” symbol display,
meanwhile, it will automatically display data saved in the group
1. Then press HOLD button or POWER button to read the
stored data by turning upwards or downwards in cycle. It will
return to the group 1’s data automatically after reaching the last

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group’s data in storage.
Press POWER button for more than 3 seconds to exit
from data reference mode, returning to receiving data mode.
During the exit, it will show “End” symbol.
6. Data Deletion
Under data reference mode, press HOLD + POWER
button to delete all the data in storage, and return to Data
Reception mode. During the deletion of data, it will display
“dEL” symbol.
VIII. Replacing Batteries
Warning! In case that the battery’s cover
board is not well closed, it is forbidden to
make test. Otherwise, it is dangerous.
Pay attention to the polarity of battery, in case
of damage to the meter.
Do not mix in the use of new and old batteries.
1. When the battery voltage is below 4.8V, the meter will
display “ ” symbol, indicating the batteries have no
sufficient power content. Please replace batteries.
2. Power off, to make sure the meter is under the state of
power off. To loosen two screws of the battery cover board,
open the cover board to replace brand-new qualified
batteries on. It should pay special attention on the battery
specification and polarity, cover the board well and fasten
the two screws.
3. Press POWER button to check whether the meter can be
powered on normally. If not, please repeat the operation
according the step 2.