ETCR ETCR2000E Plus User manual

CONTENT
I.Attention ............................................................................................ 1
II. Brief Introduction.............................................................................. 3
III. Specification.................................................................................... 6
1. Model of Series............................................................................... 6
2. Ranges and Accuracy of Measurement......................................... 6
3. Specifications.................................................................................. 6
IV. Structure of Meter............................................................................ 9
V. Liquid Crystal Display..................................................................... 10
1. LCD Screen.................................................................................. 10
2. Description of Special Symbols.................................................... 10
3. Examples Illustrated..................................................................... 12
VI．Function Zoom Table................................................................... 14
VII. Operating Method........................................................................ 14
1. Boot up......................................................................................... 14
2．Shutdown.................................................................................... 15
3．Resistance Measurement........................................................... 16
4．Current Measurement................................................................. 17
5．Date Lock/Release/Storage........................................................ 18
6．Data Access................................................................................ 19
7．Alarm Settings............................................................................. 19
8．Access to Alarm Critical Value.................................................... 20
9．Clear Data................................................................................... 20

10．Data Upload.............................................................................. 20
VIII. Measurement Principle............................................................... 21
1. Principle of Resistance Measurement.......................................... 21
2. Principle of Current Measurement ............................................... 21
IX. Measurement Method of Earth Resistance.................................. 22
1. Multi-Point Grounding System ..................................................... 22
2. Limited Point Grounding System.................................................. 23
3. Single-Point Grounding System................................................... 25
X. Field Application............................................................................. 28
Ⅺ. Matters need attention when measuring grounding resistance... 33
Ⅻ. Bill of Loading............................................................................... 35
XIII. Parts List and Assembly Details................................................. 35
1. Parts List....................................................................................... 35
2. Assembly Details.......................................................................... 37
XIV. Trouble shooting......................................................................... 37

-1-
I.Attention
Thank you for purchasing this pincers earth tester from ETCR
Electronic Technology Company. In order to make better use of the
product, please be certain:
----To read this user manual carefully.
----To comply with the operating cautions presented in
this manual.
1 Under any circumstances, use the Meter should pay special
attention to safety.
2 Pay attention to the measurement range of the Meter and the
using environment provided.
3 Pay attention to the text labeled on the panel and back plane
of the Meter.
4 Before booting up, the trigger should be pressed for 1-2 times
to ensure the jaws are well closed.
5 At Boot time, DO NOT press the trigger, nor clamp any wire.
6 Before the auto inspection is completed and the "OL Ω" sym-
bols are showed, the measured objects cannot be clamped
on.
7 The jaw planes contact must be maintained clean, and should
not be polished with corrosive and rough materials.
8 Avoid any impact onto this Meter, especially the Jaw contact
surface.
9 This Meter will have some buzzing sound in measurement

-2-
process, and it is normal.
10 The measurement current of the wire should not exceed the
upper limit of the Meter.
11 Please take out the batteries in the case of the Meter being
idle for a long time.
12 The dismantling, calibration and maintenance the Meter shall
be operated by the authorized staff.
13 If the continuing use of it would be dangerous, the Meter
should be stopped using immediately, and immediately sealed
for the treatment by the authorized agencies.

-3-
II. Brief Introduction
ETCR2000E+/ETCR2100E+ Multifunctional Clamp Earth Resis-
tance Tester was designed by technical department of ETCR
Electronic Technology Company, it can fulfilling historical inquiry
and online real-time monitoring through monitoring software, dy-
namic display, alarm indicator, and with the functions like historical
data access, reading, preservation, report forms, printing and so
on. In addition，it can measure 40A leakage current t and more
other functions, suitable for a wide place. Its performance is mainly
reflected in:
Breakthrough in self-test the boot a long time to wait, start
immediately into the test.
Breakthrough relay self-test mode, using the most ad-
vanced processing algorithms and digital integration
technology, a fully intelligent.
Break the old product to heavy issues, more in line with
characteristics of handheld devices.
New design, panel operation with 6 buttons, better per-
formance.
An increase of sound and light alarm, "beep—beep--beep
--" alarm sound.
Increase the interference signal recognition indicator.
Improved anti-jamming capability and test stability.
Stored data: 99 Units.
Wider range: 0.01Ω-1200Ω、0.00mA-40.0A.

-4-
Lower power consumption: Maximum operating current
not exceeding 50mA.
Monitoring software has the function of online real-time
monitoring, history inquiry, dynamic display, with software
alarm Settings, display current waveform, maximum value,
minimum value and average value. In addition, the users
can read, inquire, store, analyze, process, sequence his-
torical data and generate and print a fitting curve and re-
port.
Historical data can saved as .TXT file or .DOC file.
ETCR series of Pincers Earth Tester is widely used in the groun-
ding resistance measurement of the power, telecommunications,
meteorology, oilfield, construction and the industrial and electrical
equipment.
ETCR series of Pincers Earth Tester, in the measurement of a
grounding system with loop current, does not require breaking
down the grounding wire, and need no auxiliary electrode. It is safe,
fast and simple in use.
ETCR series of Pincers Earth Tester can measure out the faults
beyond the reach of the traditional methods, and can be applied in
the occasions not in the range of the traditional methods.
ETCR series of Pincers Earth Tester can measure the integrated
value of the grounding body resistance and the grounding lead
resistance.
ETCR series of Pincers Earth Tester is equipped with a long jaw,

-5-
as indicated in the figure below. A long jaw is particularly suitable
for the occasion of grounding with the flat steel.

-6-
III. Specification
1. Model of Series
Model
Jaw Size (mm)
Note
ETCR2000E+
65mm×32mm
Long Pincers Jaw
ETCR2100E+
Φ32mm
Round Pincer Jaw
2. Ranges and Accuracy of Measurement
Mode
Range
Resolution
Accuracy
Resistance
0.010Ω-0.099Ω
0.001Ω
±（1%＋0.01Ω）
0.10Ω-0.99Ω
0.01Ω
±（1%＋0.01Ω）
1.0Ω-49.9Ω
0.1Ω
±（1%＋0.1Ω）
50.0Ω-99.5Ω
0.5Ω
±（1.5%＋0.5Ω）
100Ω-199Ω
1Ω
±（2%＋1Ω）
200Ω-395Ω
5Ω
±（5%＋5Ω）
400-590Ω
10Ω
±（10%＋10Ω）
600Ω-880Ω
20Ω
±（20%＋20Ω）
900Ω-1200Ω
30Ω
±（25%＋30Ω）
Current
0.00mA -9.95mA
0.05mA
±（2.5%＋2mA）
10.0mA -99.0mA
0.1mA
±（2.5%＋5mA）
100mA -300mA
1mA
±（2.5%＋20mA）
0.30A-2.99A
0.01A
±（2.5%＋0.1A）
3.0A-9.9A
0.1A
±（2.5%＋0.3A）
10.0A-19.9A
0.1 A
±（2.5%＋0.5A）
20.0A-40.0A
0.1 A
±（3%＋1A）
3. Specifications
Resistance Range
0.01Ω-1200Ω
Current Range
0.00mA-40.0A
Resistance Resolu-
0.001Ω

-7-
tion
Current Resolution
0.05mA
Data memory
99 Sets
RS232 Interface
RS232 interface，software monitor ，data upload，
dynamic display
Self-checking time
≤1s
Power Consumption
≤50mA
Wire length
1.8m(RS232 data wire)
Audible and visible
alarm
―du—du—du‖ for alarming press AL for on/off；LCD alarm
indication
Alarm Threshold
Setting Range
Resistance：1-199Ω；Current：1-499mA
Power Supply
DC: 6V ( 4 PCS of LR6 Alkaline batteries)，
continuously working for 40 hours
Working Tempera-
ture and Humidity
-20℃-55℃；10％RH-90％RH
LCD Screen
4 Digits LCD display, Screen L×W: 47mm×28.5mm
Clamp Size
Long Pincers Jaw : 65mm×32mm；Round Pincer Jaw:
Φ32mm
Open jaw size
Long Pincers Jaw : 28mm; Round Pincer Jaw : Φ32mm
Tester Weight
Long Pincers Jaw : 1160g; Round Pincer Jaw :
1120g(including batteries)
Dimension
Long Pincers Jaw：L×W×H 285mm×85mm×56mm
Round Pincer Jaw：L×W×H 260mm×90mm×66mm
Protection class
Double insulation

-8-
Feature of dimen-
sion
CT clamp
Shift
Automatically
External magnet /
electric field
＜40A/m；＜1V/m
Time for single
measurement
0.5 second
Frequency for re-
sistance test
＞1KHz
Frequency for cur-
rent test
50/60Hz automatic identification

-9-
IV. Structure of Meter
1. Long Pincers Jaw : 65mmx32mm
2. Round Pincer Jaw : φ32mm
3. Trigger: to control opening and closing of jaw
4. HOLD Key: lock / Release display / Storage
5.ON/OFF Key: Boot Up / Shutdown /Quit /Clear Data
6. MEM Key: Data Access / Clear Data
7. AL Alarm Function Key: Alarm Open / Turn Off / Alarm Critical
Value Setting
8. Resistance Measure Switch Key Ω (Right Arrow Key)
9. Current Measure Switch Key A (Left Arrow Key)
10. Liquid Crystal Display (LCD)

-10-
V. Liquid Crystal Display
1. LCD Screen
(1).Alarm Symbol
(2). Symbol of low battery & voltage
(3). Symbol of full data storage
(4). Symbol of data access
(5). 2-Digital No. Of Data Storage Unit
(6). Current unit
(7). Resistance unit
(8). Noise signal
(9). Data lock symbol
(10).Symbol of an open jaw
(11). Symbol of DC
(12). Metrication decimal point
(13). 4-digital LCD figures display
(14). Symbol of AC
2. Description of Special Symbols
⑴. Symbol of an open jaw: As a jaw is in the open state, the

-11-
symbol shows.At this point, trigger may be artificially pressed,
or the jaws have been seriously polluted, and can no longer
continue to measure.
⑵. ―Er‖ Boot error symbol, May be pressing trigger when boot or
jaw has been opened.
⑶.Symbol of low battery & voltage: when the battery vol-
tage is lower than 5.3V, the symbol shows. At this time, it
cannot guarantee accuracy of the measurements. Batteries
should be replaced.
⑷. "OL Ω" symbol indicates that the measured resistance has
exceeded the upper limit of the Meter.
⑸."L0.01Ω" symbol indicates that the measured resistance has
exceeded the lower limit of the Meter.
⑹. "OL A" symbol indicates that the measured current has ex-
ceeded the upper limit of the Meter.
⑺. Alarm symbol: when the measured value is greater than
the critical value of alarm setting, the symbol flashes, and the
meter issued by intermittent "beep--beep –beep--" sound.
⑻. MEM Symbol of full data storage: memory is full of data units
of 99, and can no longer continue to store data. MEM symbol
flashes.
⑼. MR Symbol of access to data: to display in an access to data,
also including the number of data.
⑽. NOISE signal: when the symbol flashes, in the measurement
of grounding resistance at a greater interference current in
the loop. At this time it cannot guarantee accuracy of the

-12-
measurements.
3. Examples Illustrated
⑴.---Jaw is in open state, and cannot
measure
⑵. ---Boot error instructions Er (Error)
⑶. ---Measured loop resistance is less
than 0.01Ω
⑷.---Measured loop resistance is 5.1Ω
⑸. ---Measured loop resistance is 2.1Ω
---Lock the current measurement
value: 2.1Ω
---Auto storage as 08 set data
⑹. ---Access to the stored data of Unit No.26
---Measured loop resistance is 0.028Ω
⑺.---Alarm function activated, the measured current exceeded
the critical value of alarm setting
---Low battery & voltage is displayed. At this time, it not
guarantee the accuracy of the measurements
---Measured current is 8.40A
---Lock the current value displayed

-13-
---Store the current value as the data
Unit No.37
⑻. --- Access to the stored data unit No.8
--- Measured resistance is 30Ω
--- This data is measured in a lot of signals interference

-14-
VI．Function Zoom Table
Function
Bottom
On/off/delay shutdown
ON/OFF
Lock/cancel display
HOLD
Exit
ON/OFF
Resistance/current measurement/data access
mode
MODE
Lock/cancel display/store/access alarm value
SET
Set critical value/digital select/access the data have
stored
MODE/SET
Delete all the data have stored
SET+MODE
VII. Operating Method
1. Boot up
Boot , DO NOT press the trigger, don’t open jaws, nor
clamp any wire
Boot complete, show “OL Ω”, then press the trigger,
open jaws, clamp the measured wire
Before booting up, the trigger should be pressed for
a couple of times to ensure the jaws are well closed.
Boot, must maintain clamp meter natural resting
state, don’t flip Clamp, don’t be imposed outside
force on the jaw, otherwise cannot guarantee the
accuracy of measurement
Press ON/OFF Key to Boot, first, automated testing LCD, show all
of its symbols (Figure 1). Meanwhile the instrument au-

-15-
to-calibration, after boot displayed "OL Ω", automatically enter the
resistance measurement mode (Figure 2).If there is no normal boot
self-calibration, instrument will show "Er" symbol, said boot error.
need to check the cause and reboot (Figure 3).
After Power On and Self Test if
not appear "OL Ω",but shows a large
resistance (Figure 4).
However, when measured with the
test ring, still gives the correct result, indicating Clamp measured
only in the high-value (for example, more than 100Ω) has large
errors, When measuring a small resistance retains the original
Accuracy, the user can rest assured use.
2．Shutdown
Press ON/OFF Key to Shutdown.
5 minutes after boot, LCD display into the blinking state. To reduce
battery consumption, blinking state for 30 seconds automatically
shut down. In the blinking state press ON/OFF key to delay shut-
down, Clamp continue to work.
In the HOLD state, need to press HOLD key to exit the HOLD
state, then press ON/OFF key to shut down.
In settingAlarm Critical Value state, need to press the ON/OFF key
or press the AL key for 3 seconds, exit Alarm Critical Value state,
then press ON/OFF key to shut down.

-16-
3．Resistance Measurement
After the booting auto-inspection is completed, it shows "OL Ω" and
will be able to proceed with resistance measurement.At this point,
press the trigger and open the jaws, clamp the target loop, reading
to get the resistance value.
If the user thinks it necessary, the test can be done with the ring as
shown in the following figure 5. Its show value should be consistent
with the normal value on the test ring (5.1Ω).
The normal value on the test ring is the
value at a temperature of 20°C.
It is normal to find the difference of
numerical 1 word between the show
value and the nominal value,
For instance: If the nominal value of
test ring is 5.1Ω, it would be normal
showing 5.0Ω or 5.2Ω. Figure 5
It shows "OL Ω‖, indicating that the
measured resistance value exceeded
the upper limit of Meter, see Figure 2.
It shows "L0.01Ω‖, indicating that the
measured resistance value exceeded the lower limit of Meter, see
Figure 6.
Flashing display symbols , go with intermittent
"beep--beep--beep--" sound, indicating the measured resistance
exceeds the resistance ofAlarm Critical Value.
In the HOLD state, need to press HOLD key to exit the HOLD