ANALOG & DIGITAL EARTH RESISTANCE TESTER · instruction manual analog & digital earth resistance tester earth resistance tester cat.i i 300v off 20˜ p c digital 2720 er e earth voltage

INSTRUCTION MANUAL

ANALOG & DIGITAL

EARTH RESISTANCE TESTER


CAT.III 300V

OFF

20�

P C

DIGITAL 2720 ER

E

EARTHVOLTAGE

TEST ON / OFF

2000�

HOLD

AC

-+

V

DATA HOLD

MAX.AC200V

200�


CAT.III 30V

2705 ER

P CE

PRESS TO TEST

LOCK

MAX .AC30V

BATT. CHECK

x 1

x 10

x 100

EARTHVOLTAGE

OFF

ALWAYS ENSURE CIRCUIT TO TEST

IS FREE OFVOLTAGE BEFORE

PROCEEDING WITH TEST.

Customer Care Australia P: 13122 F: 1300 303 310 E: [email protected] W:cabac.com.au A: Distribution Pl, Seven Hills NSW 2147Customer Care New Zealand P: 0800 966 969 F: 0088 6969 E: [email protected] W: cabac.co.nz

INDEX PAGE

INTRODUCTION ............................ 2

SAFETY NOTES ............................ 2

FEATURES ..................................... 3

SPECIFICATIONS .......................... 4

MEASURING METHODS ............... 5-7

MAINTENANCE .............................. 8

ANALOGEARTH RESISTANCE TESTER

DIGITALEARTH RESISTANCE TESTER

INTRODUCTION ............................ 10

SAFETY NOTES ............................ 10

FEATURES ..................................... 11

SPECIFICATIONS .......................... 12-13


MAINTENANCE .............................. 17


ANALOG

-1-


CAT.III 30V

2705 ER

P CE

PRESS TO TEST

LOCK

MAX.AC30V

BATT. CHECK

x 1

x 10

x 100

EARTHVOLTAGE

OFF





INDEX PAGE

INTRODUCTION ............................ 2

SAFETY NOTES ............................ 2

FEATURES ..................................... 3

SPECIFICATIONS .......................... 4


MAINTENANCE .............................. 8

ANALOGEARTH RESISTANCE TESTER

DIGITALEARTH RESISTANCE TESTER

INTRODUCTION ............................ 10

SAFETY NOTES ............................ 10

FEATURES ..................................... 11

SPECIFICATIONS .......................... 12-13


MAINTENANCE .............................. 17


ANALOG

-1-


CAT.III 30V

2705 ER

P CE

PRESS TO TEST

LOCK

MAX.AC30V

BATT. CHECK

x 1

x 10

x 100

EARTHVOLTAGE

OFF





1

3.FEATURES�High quality Taut Band movement.

�Capable of measuring earth voltage.

�2mA measuring current permits earth resistancetests with tripping earth leakage current breakersin the circuit under test.

�In addition to facilitating for precisionmeasurement, test leads for simplified two-wiremeasuring system also are supplied as standardaccessories.

�Battery operated.

�Battery check function.

-2-

1.INTRODUCTIONNOTE

This meter has been designed and tested inaccordance to the IEC Publication 348 - safetyrequirements for Electronic Measuring Apparatus,IEC-1010 (EN 61010), and other safety standards.Follow all warnings to ensure safe operation.

2.SAFETY NOTES�Read the following safety information carefully

before attempting to operate or service the meter.

�Use the meter only as specified in this manual.Otherwise, the protection provided by the metermay be impaired.

�Rated environmental conditions(1). Indoor Use.(2). Installation CAT.III 30V.(3). Pollution Degree 2.(4). Altitude up to 2000 meters.(5). Relative humidity 80% Max.

o o(6). Ambient temperature 0 ~40 C

�Observe the International Electrical Symbols listedbelow

Meter is protected throughout by doubleinsulation or reinforced insulation.

Warning ! Risk of electric shock.

Caution ! Refer to this manual before using themeter.

.

-3-


2

3.FEATURES�High quality Taut Band movement.



�In addition to facilitating for precisionmeasurement, test leads for simplified two-wiremeasuring system also are supplied as standardaccessories.


�Battery check function.

-2-

1.INTRODUCTIONNOTE

This meter has been designed and tested inaccordance to the IEC Publication 348 - safetyrequirements for Electronic Measuring Apparatus,IEC-1010 (EN 61010), and other safety standards.Follow all warnings to ensure safe operation.



�Use the meter only as specified in this manual.Otherwise, the protection provided by the metermay be impaired.

�Rated environmental conditions(1). Indoor Use.(2). Installation CAT.III 30V.(3). Pollution Degree 2.(4). Altitude up to 2000 meters.(5). Relative humidity 80% Max.

o o(6). Ambient temperature 0 ~40 C





.

-3-


3

4.SPECIFICATIONS�Measurement system

Earth resistance by constants current inverter820Hz, 2mA approx.

��

�

�Safety standardIEC-1010(EN 61010), Installation CAT.III 30V.

�Power source1.5V SUM-3(R6P) x 6pieces or equivalent.

�Dimensions205(L) x 90(W) x 55(D) mm

�WeightApprox. 514g (battery included)

�AccessoriesTest leads (red-15M, yellow-10M, green-5M)Auxiliary earth spikesSimplified measurement probeInstruction manual

Measuring RangesEarth resistance 10/100/1000Earth voltage 0~30V AC(40~500Hz)

AccuracyEarth Resistance ±3% of full scaleEarth voltage ±2.5% of full scale

-4-

5~10m 5~10mAuxiliaryEarthSpikes

EarthElectrodeunder test

Green

YellowRed

Fig.1

P1C1

P CEMAX.

AC30V

5.MEASURING METHODSBEFORE PROCEEDING WITH MEASUREMENT,READ SAFETY NOTES ON PAGE 2.

1. Check to see if the meter pointer is adjustedexactly to the mechanical zero position of the � orV scale. If the pointer is in the zero position, turnthe zero adjust screw with a screwdriver.

2. Rotate the function switch to the "BATT. CHECK"position and press to test. Battery voltage issufficient when the meter pointer stays in "OK"position of the battery check scale. If not, replacewith the new batteries.

3. Rotate the function switch to "EARTH VOLTAGE"position and press to test. Earth voltage will beindicated on the ACV scale. When the earth voltageis more than 10V, it may result in errors in earthresistance measurement. Accurate earthresistance measurement may not be made.

4. Precision earth resistance measurement method(1) Connect green, yellow and red test leads to

instrument terminals E, P and C with auxiliaryearth spikes P1, C1 inserted into earth "IN ASTRAIGHT LINE". (Fig. 1)

-5-


4

4.SPECIFICATIONS�Measurement system

Earth resistance by constants current inverter820Hz, 2mA approx.

��

�

�Safety standardIEC-1010(EN 61010), Installation CAT.III 30V.

�Power source1.5V SUM-3(R6P) x 6pieces or equivalent.

�Dimensions205(L) x 90(W) x 55(D) mm

�WeightApprox. 514g (battery included)

�AccessoriesTest leads (red-15M, yellow-10M, green-5M)Auxiliary earth spikesSimplified measurement probeInstruction manual

Measuring RangesEarth resistance 10/100/1000Earth voltage 0~30V AC(40~500Hz)

AccuracyEarth Resistance ±3% of full scaleEarth voltage ±2.5% of full scale

-4-



Green

YellowRed

Fig.1

P1C1

P CEMAX.

AC30V

5.MEASURING METHODSBEFORE PROCEEDING WITH MEASUREMENT,READ SAFETY NOTES ON PAGE 2.

1. Check to see if the meter pointer is adjustedexactly to the mechanical zero position of the � orV scale. If the pointer is in the zero position, turnthe zero adjust screw with a screwdriver.

2. Rotate the function switch to the "BATT. CHECK"position and press to test. Battery voltage issufficient when the meter pointer stays in "OK"position of the battery check scale. If not, replacewith the new batteries.

3. Rotate the function switch to "EARTH VOLTAGE"position and press to test. Earth voltage will beindicated on the ACV scale. When the earth voltageis more than 10V, it may result in errors in earthresistance measurement. Accurate earthresistance measurement may not be made.


instrument terminals E, P and C with auxiliaryearth spikes P1, C1 inserted into earth "IN ASTRAIGHT LINE". (Fig. 1)

-5-


5

(2) Rotate the function switch to proper range,Then press the push-button to test and take theReading.

5. Simplified earth resistance measurement method(1) This method is recommended where an earth

resistance higher than 10� is measured orwhere it is not possible to drive auxiliary earthspikes. An approximate value of earthresistance can be obtained by the two-wiresystem as shown in Fig. 2.

(2) Rotate the function switch to "EARTHVOLTAGE" position and press to test. Makecertain that earth voltage is less than 10V.

(3) First rotate the function switch to "x10" positionand press to test. Read earth resistance. If themeter pointer indicates over full scale, switchto "x100" position and read earth resistance.

(4) The reading obtained (Rx) is an approximateearth resistance value. There is no need forexternal shorting since P and C terminals areshorted by using the test leads specified for thesimplified measurement.

(5) Rx = Re - reRx = True Earth ResistanceRe = Indicated Valuere = Earth Resistance or Earth Electrode.

(6) Since the measuring current is as low as 2mA,the earth leakage breaker (ELCB) does not tripeven if the earth side of the commercial powersupply with an ELCB is used.

* Follow the proper connection as shown in Fig. 1.The LED (red) indicator will be lit. This provesthat a correct current circulation is under itsoperation.

-6- -7-


Green

Red

Rx=Re-re

Secondary Side

Primary Side

Supply Transformer

Where earth for mainspower supply is used.

Rxre

Fig.2

P CEMAX.

AC30V


6

(2) Rotate the function switch to proper range,Then press the push-button to test and take theReading.


resistance higher than 10� is measured orwhere it is not possible to drive auxiliary earthspikes. An approximate value of earthresistance can be obtained by the two-wiresystem as shown in Fig. 2.

(2) Rotate the function switch to "EARTHVOLTAGE" position and press to test. Makecertain that earth voltage is less than 10V.

(3) First rotate the function switch to "x10" positionand press to test. Read earth resistance. If themeter pointer indicates over full scale, switchto "x100" position and read earth resistance.

(4) The reading obtained (Rx) is an approximateearth resistance value. There is no need forexternal shorting since P and C terminals areshorted by using the test leads specified for thesimplified measurement.

(5) Rx = Re - reRx = True Earth ResistanceRe = Indicated Valuere = Earth Resistance or Earth Electrode.

(6) Since the measuring current is as low as 2mA,the earth leakage breaker (ELCB) does not tripeven if the earth side of the commercial powersupply with an ELCB is used.

* Follow the proper connection as shown in Fig. 1.The LED (red) indicator will be lit. This provesthat a correct current circulation is under itsoperation.

-6- -7-


Green

Red

Rx=Re-re

Secondary Side

Primary Side

Supply Transformer


Rxre

Fig.2

P CEMAX.

AC30V


7

6.MAINTENANCE�Battery replacement

When setting the function switch to the "BATT.CHECK" position and the meter pointer does NOTstay in "OK" position, replace the batteries asfollows(1) Disconnect the test leads from the instrument

and turn off the power.(2) Use a screwdriver to unscrew the screw on

back cover then slide away the cover out. Takeout the batteries and replace with new batteries,type SUM-3(R6P).

(3) Place back cover and secure bay with screw.

�Cleaning and storagePeriodically wipe the case with a damp cloth anddetergent. Do not use abrasives or solvents.

If the meter is not to be used for periods of longerthan 60 days, remove the batteries and store themseparately.

-8-


DIGITAL

-9-


CAT.III 300V

OFF

20�

P C

DIGITAL 2720 ER

E

EARTHVOLTAGE

TEST ON / OFF

2000�

HOLD

AC

-+

V

DATA HOLD

MAX.AC200V

200�


8


When setting the function switch to the "BATT.CHECK" position and the meter pointer does NOTstay in "OK" position, replace the batteries asfollows(1) Disconnect the test leads from the instrument


back cover then slide away the cover out. Takeout the batteries and replace with new batteries,type SUM-3(R6P).

(3) Place back cover and secure bay with screw.

�Cleaning and storagePeriodically wipe the case with a damp cloth anddetergent. Do not use abrasives or solvents.


-8-


DIGITAL

-9-


CAT.III 300V

OFF

20�

P C

DIGITAL 2720 ER

E

EARTHVOLTAGE

TEST ON / OFF

2000�

HOLD

AC

-+

V

DATA HOLD

MAX.AC200V

200�


9

1.INTRODUCTIONNOTE

This meter has been designed and tested according to IEC Publication 348. Safety Requirements forElectronic Measuring Apparatus.IEC-1010 (EN 61010) and other safety standards.Follow all warnings to ensure safe operation.



�Use the meter only as specified in this manualotherwise the protection provided by the metermay be impaired.

�Rated environmental conditions(1). Indoor use.(2). Installation Category III 200V.(3). Pollution Degree 2.(4). Altitude up to 2000 Meter.(5). Relative Humidity 80% Max.

o o(6). Ambient Temperature 0 ~40 C





.

-10- -11-

3.FEATURES



�In addition to facilitating for precisionmeasurement, test leads for simplified two wiremeasuring system also are supplied as standardaccessories.

�Data hold function.


�Battery life indicator.

�Designed to meet IEC-1010(EN 61010) safetystandard.

�Timer for test function (count 3~5 minutes).


10

1.INTRODUCTIONNOTE

This meter has been designed and tested according to IEC Publication 348. Safety Requirements forElectronic Measuring Apparatus.IEC-1010 (EN 61010) and other safety standards.Follow all warnings to ensure safe operation.



�Use the meter only as specified in this manualotherwise the protection provided by the metermay be impaired.

�Rated environmental conditions(1). Indoor use.(2). Installation Category III 200V.(3). Pollution Degree 2.(4). Altitude up to 2000 Meter.(5). Relative Humidity 80% Max.

o o(6). Ambient Temperature 0 ~40 C





.

-10- -11-

3.FEATURES



�In addition to facilitating for precisionmeasurement, test leads for simplified two wiremeasuring system also are supplied as standardaccessories.

�Data hold function.


�Battery life indicator.

�Designed to meet IEC-1010(EN 61010) safetystandard.

�Timer for test function (count 3~5 minutes).


11

HOLD

4.SPECIFICATIONS�

��

� �(0.01� )� �(0.1� )

� �(1� )

�

�� , which

�

�

�

�

�

Measurement SystemEarth resistance by constant current inverter820Hz, 2mA approx.

Earth resistanceRange 20/200/2000Resolution0~19.990~199.90~1999

Earth voltage 0~200V AC, 40-500Hz

AccuracyEarth resistance ±(2% rdg+2dgt) or ±0.1

is grater. Earth voltage ±(1% rdg+2dgt)

Safety standardIEC-1010(EN 61010), Installation CAT.III 200V.

Low battery indication" " symbol appears on the display.

Data hold indication" " symbol appears on the display.

Over range indication" 1 " (MSD).

DisplayLCD 3 digit(2000 counts)

-12- -13-

Power source1.5V (R6P) x 6 pieces or equivalent.

Dimensions205(L) x 90(W) x 55(D) mm.

WeightApprox. 572g (battery included).

AccessoriesTest leads(red-15m, yellow-10m, green-5m).Auxiliary earth spikes.Simplified measurement probe.Instruction manual.

�

�

�

�

+-

12


12

HOLD

4.SPECIFICATIONS�

��

� �(0.01� )� �(0.1� )

� �(1� )

�

�� , which

�

�

�

�

�

Measurement SystemEarth resistance by constant current inverter820Hz, 2mA approx.

Earth resistanceRange 20/200/2000Resolution0~19.990~199.90~1999

Earth voltage 0~200V AC, 40-500Hz

AccuracyEarth resistance ±(2% rdg+2dgt) or ±0.1

is grater. Earth voltage ±(1% rdg+2dgt)

Safety standardIEC-1010(EN 61010), Installation CAT.III 200V.

Low battery indication" " symbol appears on the display.

Data hold indication" " symbol appears on the display.

Over range indication" 1 " (MSD).

DisplayLCD 3 digit(2000 counts)

-12- -13-

Power source1.5V (R6P) x 6 pieces or equivalent.

Dimensions205(L) x 90(W) x 55(D) mm.

WeightApprox. 572g (battery included).

AccessoriesTest leads(red-15m, yellow-10m, green-5m).Auxiliary earth spikes.Simplified measurement probe.Instruction manual.

�

�

�

�

+-

12


13

5.MEASURING METHODSBEFORE PROCEEDING MEASUREMENT, READSAFETY NOTES ON PAGE 10.1. In proceeding with measurement, if " " symbol

appears on the display, replace with new batteries.

2. Rotary to function switch to "EARTH VOLTAGE"position and press to test. Earth voltage willdisplayed on the LCD. When earth voltage is morethan 10V, it may result in errors in earth resistancemeasurement. Accurate earth resistancemeasurement may not be made.


instrument terminals E, P and C with auxiliaryearth spikes P1, C1 stuck into earth "IN ASTRAIGHT LINE". (Fig. 3)

(2) Rotary the function switch to suitable rangethen press the pushbutton to test and take theReading.

+-


resistance higher than 10� is measured orwhere it is not possible to drive auxiliary earthspikes. An approximate value of earthresistance can be obtained by the two wiresystem where is shown in Fig. 4.

(2) Rotary to function switch to "EARTH VOLTAGE"position and press to test. Make certain thatearth voltage is less than 10V.

(3) First rotary the function switch to "200� "position and press to test, read earth resistance.If the display shows "1" (MSD), switch to"2000� " position and read earth resistance.

(4) The reading obtained (Rx) is an approximateearth resistance value. There is no need forexternal shorting as P and C terminals areshorted by using the test leads specified for theSimplified measurement.



Green

Yellow

Red

Fig.3

P CEMAX.

AC200V

-14- -15-


Green

Red

Rx=Re-re

Secondary Side

Primary Side

Supply Transformer


Rxre

Fig.4

P CEMAX.

AC200V


14

5.MEASURING METHODSBEFORE PROCEEDING MEASUREMENT, READSAFETY NOTES ON PAGE 10.1. In proceeding with measurement, if " " symbol

appears on the display, replace with new batteries.

2. Rotary to function switch to "EARTH VOLTAGE"position and press to test. Earth voltage willdisplayed on the LCD. When earth voltage is morethan 10V, it may result in errors in earth resistancemeasurement. Accurate earth resistancemeasurement may not be made.


instrument terminals E, P and C with auxiliaryearth spikes P1, C1 stuck into earth "IN ASTRAIGHT LINE". (Fig. 3)

(2) Rotary the function switch to suitable rangethen press the pushbutton to test and take theReading.

+-


resistance higher than 10� is measured orwhere it is not possible to drive auxiliary earthspikes. An approximate value of earthresistance can be obtained by the two wiresystem where is shown in Fig. 4.

(2) Rotary to function switch to "EARTH VOLTAGE"position and press to test. Make certain thatearth voltage is less than 10V.

(3) First rotary the function switch to "200� "position and press to test, read earth resistance.If the display shows "1" (MSD), switch to"2000� " position and read earth resistance.

(4) The reading obtained (Rx) is an approximateearth resistance value. There is no need forexternal shorting as P and C terminals areshorted by using the test leads specified for theSimplified measurement.



Green

Yellow

Red

Fig.3

P CEMAX.

AC200V

-14- -15-


Green

Red

Rx=Re-re

Secondary Side

Primary Side

Supply Transformer


Rxre

Fig.4

P CEMAX.

AC200V


15

Rx = True Earth ResistanceRe = Indicated Valuere = Earth Resistance of Earth Electrode.

(6) Since measuring current is as low as 2 mA, theearth leakage breaker (ELCB) does not tripeven if the earth side of the commercial powersupply with an ELCB is used.

Follow the proper connection such as Fig. 3, theLED(red) indicator will lit. This proves a correctcurrent circulation is under its operation.

(5) Rx = Re -re

*

-16- -17-


When the symbol " " appears on the display,replace with new batteries as follows(1) Disconnect the test leads from the instrument


back cover then slide the cover, take out the batteries and replace with new batteries type

SUM-3.(3) Place back cover and secure bay 2 screws.

�Cleaning and storage

Periodically wipe the case with a damp cloth anddetergent do not use abrasives or solvents.


+-

WARNINGTo avoid electrical shock or damage to the meter,do not get water inside the case.


16

Rx = True Earth ResistanceRe = Indicated Valuere = Earth Resistance of Earth Electrode.

(6) Since measuring current is as low as 2 mA, theearth leakage breaker (ELCB) does not tripeven if the earth side of the commercial powersupply with an ELCB is used.

Follow the proper connection such as Fig. 3, theLED(red) indicator will lit. This proves a correctcurrent circulation is under its operation.

(5) Rx = Re -re

*

-16- -17-


When the symbol " " appears on the display,replace with new batteries as follows(1) Disconnect the test leads from the instrument


back cover then slide the cover, take out the batteries and replace with new batteries type

SUM-3.(3) Place back cover and secure bay 2 screws.

�Cleaning and storage

Periodically wipe the case with a damp cloth anddetergent do not use abrasives or solvents.


+-

WARNINGTo avoid electrical shock or damage to the meter,do not get water inside the case.


17

-18-

Due to our policy of constant improvement and development, we reserve the right to change specifications without notice.

CAT IV - Is for measurements performed at the source ofthe low-voltage installation.

CAT III - Is for measurements performed in the buildinginstallation.

CAT II - Is for measurements performed on circuitsdirectly connected to the low-voltage installation.

CAT I - Is for measurements performed on circuits notdirectly connected to Mains.

K05.20


18

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ANALOG & DIGITAL EARTH RESISTANCE TESTER · instruction manual analog & digital earth resistance tester earth resistance tester cat.i i 300v off 20˜ p c digital 2720 er e earth voltage