HVTest ETCR2000 User manual

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Dear Client
Thank you for Purchasing our ETCR2000 Clamp Type Earth
Resistance Tester. Please read the manual in detail prior to first
use, which will help you use the equipment skillfully.
Our aim is to improve and perfect the
company's products continually, so there may be
slight differences between your purchase equipment
and its instruction manual. You can find the changes
in the appendix. Sorry for the inconvenience. If you have further
questions, welcome to contact with our service department.
The input/output terminals and the test column
may bring voltage, when you plug/draw the test wire or
power outlet, they will cause electric spark. PLEASE
CAUTION RISK OF ELECTRICAL SHOCK!
Company Address:
T4，No. 41, High-tech 2 Road，East Lake High-tech Development Zone，
Wuhan
Sales Hotline: [phone]
After Service Hotline:[phone]
Fax: [phone]
E-mail: [email protected]
Website: www.hvtest.cc

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SERIOUS COMMITMENT
All products of our company carry one year limited warranty
from the date of shipment. If any such product proves defective
during this warranty period we will maintain it for free. Meanwhile
we implement lifetime service. Except otherwise agreed by
contract.
SAFETY REQUIREMENTS
Please read the following safety precautions carefully to avoid
body injury and prevent the product or other relevant subassembly
to damage. In order to avoid possible danger, this product can only
be used within the prescribed scope.
Only qualified technician can carry out maintenance or repair
work.
--To avoid fire and personal injury:
Use Proper Power Cord
Only use the power wire supplied by the product or meet the
specification of this produce.
Connect and Disconnect Correctly
When the test wire is connected to the live terminal, please do
not connect or disconnect the test wire.
Grounding
The product is grounded through the power wire; besides, the

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ground pole of the shell must be grounded. To prevent electric
shock, the grounding conductor must be connected to the ground.
Make sure the product has been grounded correctly before
connecting with the input/output port.
Pay Attention to the Ratings of All Terminals
To prevent the fire hazard or electric shock, please be care of
all ratings and labels/marks of this product. Before connecting,
please read the instruction manual to acquire information about the
ratings.
Do Not Operate without Covers
Do not operate this product when covers or panels removed.
Use Proper Fuse
Only use the fuse with type and rating specified for the product.
Avoid Touching Bare Circuit and Charged Metal
Do not touch the bare connection points and parts of energized
equipment.
Do Not Operate with Suspicious Failures
If you encounter operating failure, do not continue. Please
contact with our maintenance staff.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in Explosive Atmospheres.
Ensure Product Surfaces Clean and Dry.

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－Security Terms
Warning: indicates that death or severe personal injury may
result if proper precautions are not taken
Caution: indicates that property damage may result if proper
precautions are not taken.

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Contents
I. Attention................................................................................................ 6
II. Brief Introduction...............................................................................7
III. Specification.......................................................................................8
1. Model of Series............................................................................................................ 8
2. Ranges and Accuracy of Measurement................................................................... 9
3. Technical Specifications..............................................................................................9
IV. Structure of Meter...........................................................................10
V. Crystal Display..................................................................................11
1. LCD Screen.................................................................................................................11
2. Description of Special Symbols............................................................................... 12
3. Examples Illustrated.................................................................................................. 12
VI．Quick Find Table...........................................................................14
VII. Operating Method......................................................................... 14
1. Boot Up........................................................................................................................14
2. Shutdown.................................................................................................................... 16
3. Resistance Measurement.........................................................................................16
*4. Current Measurement..............................................................................................17
5. Data Lock/Release/Storage..................................................................................... 18
*6. Data Access.............................................................................................................. 19
*7. Setting of Alarm Critical Value................................................................................ 20
*8. Access to Alarm Critical Value................................................................................20
*9. Clear Data..................................................................................................................21
VIII. Measurement Principle.............................................................. 21
1. Principle of Resistance Measurement.................................................................... 21
2. Principle of Current Measurement.......................................................................... 22
IX. Measurement Method of Grounding Resistance.................. 22
1. Multi-Point Grounding System................................................................................. 22
2. Limited Point Grounding System.............................................................................24
3. Single-Point Grounding System.............................................................................. 25

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I. Attention
Thank you for purchasing this pincer earth tester from ETCR Electronic. 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.
Under any circumstances, pay special attention to safety in the use of
the Meter.
Pay attention to the measurement range of the Meter and the using
environment provided.
Pay attention to the text labeled on the panel and back plane of the
Meter.
Before booting up, the trigger should be pressed for a couple of times
to ensure the jaws are well closed.
In the process of auto inspection in booting up, DO NOT press the
trigger, nor clamp any wire.
The process of auto inspection would display "CAL6, CAL5,
CAL4…CAL0, OL Ω."
Before the auto inspection is completed and the "OL Ω" symbols are
showed, the measured objects cannot be clamped on.
The jaw planes contact must be maintained clean, and should not be
polished with corrosive and rough materials.
Avoid any impact onto this Meter, especially the jaw contact planes.
This Meter will have some buzzing sound in measurement process,
and it is normal.
The measurement current of the wire should not exceed the upper limit
of the Meter.
Please take out the batteries in the case of the Meter being idle for a
long time.
The dismantling, calibration and maintenance the Meter shall be

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operated by the authorized staff.
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.
The contents in this user manual marked with "*" are limited to
ETCR2000C.
II. Brief Introduction
ETCR2000 series of Pincer Earth Tester is a major breakthrough in
traditional grounding resistance measurement. It is widely used in the
grounding resistance measurement of the power, telecommunications,
meteorology, oilfield, construction and the industrial and electrical equipment.
ETCR2000 series of Pincer 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.
ETCR2000 series of Pincer 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. ETCR2000 series of
Pincer Earth Tester can measure the integrated value of the grounding body
resistance and the grounding lead resistance.
ETCR2000 series of Pincer Earth Tester is equipped with a long jaw, as
indicated in the figure below. A long jaw is particularly suitable for the
occasion of grounding with the flat steel.
In addition, ETCR2000C Pincer Earth Tester is also able to measure the
leakage current and the neutral current in the grounding system.

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III. Specification
1. Model of Series
Note: “√” means available.

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2. Ranges and Accuracy of Measurement
Note: "*" is limited to ETCR2000C.
3. Technical Specifications
Power Source: 6VDC (4 ×5# alkaline battery)
Working Temperature: -10 ° -55 ° C
Relative Humidity: 10%-90%
LCD: 4-digital LCD, 47 × 28.5mm width
Net Weight (including batteries): 1130g
Demension: 275mm long, 85 mm wide, 56mm thick
Protection Level: Double insulation
Structural Feature: In the jaw way
Shift: Automatic

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External Magnetic Field:＜40A/m
External Electric Field:＜1V/m
Measuring Time: 1 second
Resistance Measurement Frequency:＞1KHz
Maximum Resistance Measurement Resolution: 0.001 Ω
Resistance Measurement Range: 0.01-1000 Ω
*Current Measuring Range: 0.00-30.0A
* Measured Current Frequency: 50/60Hz
* Storable Measurement Data: 99 Units
*Setting Range of Resistance Alarm Critical Value: 1-199 Ω
*Setting Range of Current Alarm Critical Value：1-499mA
Note: "*" is limited to ETCR2000C.
IV. Structure of Meter
1. Liquid Crystal Display (LCD)
2. Trigger: to control opening and closing of jaw :
3. Pincer Jaw : 55 x 32mm
4. POWER Key: Boot Up / Shutdown /*Quit
5. HOLD Key: lock / Release display
*6.MODE Key: switch key of function mode (resistance measurement /
current measurement /data access)

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*7. SET Key: function key combinations (Combination with MODE key to
achieve: Lock / Release / Storage / Set / Check / Browse / Delete Data)
Note: "*" is limited to ETCR2000C.
V. Crystal Display
1. LCD Screen
(1). Alarming sign
(2). Sign 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 resistance of less than 0.01 Ω
(12). Metrication decimal point
(13). 4-digital LCD figures display

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2. Description of Special Symbols
(1). Symbol of an open jaw: As a jaw is in the open state, the symbol
shows. At this point, trigger may be artificially pressed, or the jaws have been
seriously polluted, and can no longer continue to measure.
(2). Symbol of low battery voltage: when the battery voltage is lower
than 5.3V, the symbol shows. At this time, it cannot guarantee accuracy of the
measurements. Batteries should be replaced.
(3). "OL Ω" symbol indicates that the measured resistance has exceeded
the upper limit of the Meter.
(4). "L0.01Ω" symbol indicates that the measured resistance has
exceeded the lower limit of the Meter.
*(5). "OL A" symbol indicates that the measured current has exceeded the
upper limit of the Meter.
*(6). Alarm symbol: when the measured value is greater than the
critical value of alarm setting, the symbol flashes.
*(7). Symbol of full data storage: memory is full of data units of 50,
and can no longer continue to store data.
*(8). Symbol of access to data: to display in an access to data, also
including the number of data.
*(9). Noise signal: the symbol shows in the measurement of
grounding resistance at a greater interference current in the loop. At this time it
cannot guarantee accuracy of the measurements.
Note: "*" is limited to ETCR2000C.
3. Examples Illustrated
(1) ---Jaw is in open state, and cannot measure

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(2) ---Measured loop resistance is less than 0.01 Ω
(3) ---Measured loop resistance is 5.1 Ω
(4) ---Measured loop resistance is 2.1 Ω
---Lock the current measurement value: 2.1 Ω
*(5) ---Access to the stored data of Unit No. 26
---Measured loop resistance is 0.028 Ω
*(6)---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
---Store the current value as the data Unit No. 37
*(7) ---Alarm function activated, the measured resistance exceeded the

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critical value of alarm setting.
--- Access to the stored data unit No. 8
---Measured resistance is 820 Ω
Note: "*" is limited to ETCR2000C.
VI．Quick Find Table
Function
Key
Boot Up / Shutdown / Shutdown Delay
POWER
Lock / Release Display
HOLD
*Quit
POWER
*Resistance measurement / current measurement / Data
Access model
MODE
*Lock / Release Display / storage / Access To Alarm
Critical Value
SET
*Alarm Critical Value Setting / Digital Option / Browse And
Store Data
MODE/SET
*To clear all stored data
SET+MODE
Note: "*" is limited to ETCR2000C.
VII. Operating Method
1. Boot Up
Before booting up, the trigger should be pressed for a couple of times to
ensure the jaws are well closed.
Press POWER key, and it is switched into the boot-up state. First to
automatically test LCD display, all its symbols show up, see Figure 1. Then to
start the auto inspection; in this process, it will be followed by showing "CAL6,

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CAL5, CAL4:CAL0, OL Ω" , see Figure 2. When "OLΩ" appears, auto
inspection is completed, and then automatically enter the resistance
measurement model, see figure 3.
In the process of auto inspection, DO NOT press the trigger, nor
open the jaw, nor clamp any wire.
In auto-inspection process, be sure to maintain the natural static state of
the Meter; do not overturn the Meter, nor impose any external force on the jaw.
Otherwise, the accuracy of measurement cannot be guaranteed.
In auto-inspection process, if the jaws clamped around a conductor loop,
the measurement is not accurate. Please remove conductor loop and reboot it
up.
If there was not an OL appearing after auto-inspection, but a greater
resistance value displayed, as shown in figure 4; But the test loop detection
can still give out the correct result. This shows that the Meter has a larger error
only in measuring the major resistance (e.g. more than 100Ω), whereas in
measuring the small resistance, it can still maintain the original accuracy, users
can be rest assured in use.
*After auto-inspection is completed, ETCR2000C shows "OL Ω”, and also

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flashes the symbol , as shown in Figure 5. Due to that no-load resistance
"OL" has exceeded the alarm critical value of resistance.
2. Shutdown
After the Meter is switched on, press POWER key to shut it down.
In five minutes after the Meter started up, the LCD screen entered flashing
state, and would automatically shut down after the flashing state is sustained
for 30 seconds to reduce battery consumption. Press POWER key in flashing
state may delay the shutdown of the Meter, and keep it working.
In HOLD state, it is required to first press HOLD key to quit from the
HOLD state, then press POWER key to shut it down.
*In HOLD state, ETCR2000C is required to press SET key or POWER
key to quit HOLD state; then press POWER key to shut down.
*In a state of alarm setting value, ETCR2000C needs first to press
POWER key or SET key for 3 sec to quit from the state, then press POWER
key to shut down.
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. Its show value should be

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consistent with the normal value on the test ring (5.1 Ω).
The normal value on the test ringis 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
5.1 Ω, it would be normal showing 5.0 Ω or 5.2 Ω.
It shows "OL Ω”, indicating that the measured resistance value exceeded
the upper limit of Meter, see Figure 3.
It shows "L0.01Ω”, indicating that the measured resistance value
exceeded the lower limit of Meter, see Figure 6.
In HOLD state, it is required to press HOLD key to quit the HOLD state
before continuing measuring.
*Flash symbol indicates that the measured resistance value has gone
beyond the alarm critical value.
*In other modes, ETCR2000C can be switched to the resistance
measurement mode by pressing MODE key.
*In HOLD state, ETCR2000C is required to press SET key or POWER
key to quit HOLD state; then press MODE key to switch to the mode of
resistance measurement.
*In a state of alarm setting value, ETCR2000C needs first to press
POWER key or SET key for 3 sec to quit from the state, then press MODE key
to switch to the mode of resistance measurement.
*4. Current Measurement
After the booting auto-inspection is completed, the Meter automatically
enter the resistance measurement mode. Upon showing "OL Ω", press MODE
key, and the Meter enter the current measurement mode, showing "0.00mA" ,

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see Figure 7. At this point, press the trigger and open the jaws, clamp the
target wire, reading to get the current value.
It shows "OL A”, indicating that the measured current value exceeded the
upper limit of Meter, see Figure 8.
Flash symbol indicates that the measured current value has gone
beyond the alarm critical value.
In other models, it can switch to the resistance measurement by pressing
MODE key mode.
In HOLD state, needs first to press SET key or POWER key to quit from
HOLD state, then press MODE key to switch to the current measurement
mode.
In a state of alarm setting value, needs first to press POWER key or SET
key for 3 sec to quit from the state, then press MODE key to switch to the
mode of current measurement.
5. Data Lock/Release/Storage
In the process of resistance measurement, press HOLD key to lock the
current show value, displaying HOLD symbol. Then press HOLD key to
release locking, HOLD symbol would disappear and can continue to measure.
*When ETCR2000C is in the measurement of the resistance or current,
press the SET key to lock the current show value, showing HOLD symbol,
while take this locked value as a data unit and have it automatically numbered
and stored. Then press SET key or POWER key to cancel locking, the HOLD
symbol would disappear, returning to the measurement state. Repeat the
above operations, a total of 50 units data can be stored. When memory is full,

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MEM symbol would flashs display.
*As indicated in Figure 9, lock the measured resistance 0.016Ω, and save
it as data unit No.1.
*As indicated in Figure 10, lock the measured current 278mA, and save it
as data unit No.50.And the memory is full now.
*In the access mode, press MODE key to switch to the measurement
mode, then the operation can be done to lock and save data.
*In the setting state of alarm critical value, it is required to press down
POWER key or SET key for 3 sec to quit from the setting state of alarm critical
value before operating locking and saving function.
*Switching on after shutdown will not lose the saved data.
*6. Data Access
Press MODE key to enter the Access Mode of the stored data, and the
default to display is the data unit No.01 stored, as shown Figure 11. Then
press SET key to turn down to browse the saved data. On browsing the last
data unit, it returns to the data unit No.01.If no stored data, as shown in Figure
12.
In the setting state of alarm critical value, it is required to press down
POWER key or SET key for 3 sec to quit from the setting state of alarm critical
value before pressing MODE key to switch to the access data mode.

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*7. Setting of Alarm Critical Value
Press MODE key enter the measurement mode of resistance or current.
After pressing down SET key for 3 sec, you can enter the setting function of
alarm critical value. At this point, the highest-digit begins to flash. First set the
highest digit as indicated in Figure 13 and Figure 14. Press MODE key to
switch from high to low digits. As the current figure flashes, press SET key to
change the figures of "0, 1…9 "; After setting all the digits, press down SET key
for 3 seconds to confirm the alarm critical value currently set. A successful
setting would show the flashed alarm critical value, and then automatically
return to the measurement mode.
(Figure 13 Critical Value Setting of Resistance Alarm)
(Figure 14 Critical Value Setting of Current Alarm)
In the process of setting or After a successfully process, press POWER key can also
quit from setting functions of alarm critical value, return to the measuring state.
In the data access mode, it is required to press MODE key to switch to the
measurement mode, then the operation can be done to set the alarm critical value.
*8. Access to Alarm Critical Value
Press MODE key to enter the mode of resistance or current measurement.
Press down SET key for 3 sec, you can access to check the alarm critical
value, which would flashes in high-digit. The value accessed was set in the last
time. And again press down SET key for 3 sec or POWER key to quit from the
access state and return to the measuring state.
As indicated in Figure 15, the alarm critical value of resistance set in the