EARTH RESISTANCE TESTER
T-3V
(Code M80410)
INSTRUCTION MANUAL
( M98111001-03-04A )
CIRCUTOR S.A.
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T-3V ANALYZER CONTENTS
1.- GENERAL REMARKS.................................................................................................................. 2
1.1.- Description...................................................................................................................... 2
1.2.- Specifications ................................................................................................................ 3
2.- SAFETY ADVICE ....................................................................................................................... 4
3.- INSTRUCTIONS FOR USE.......................................................................................................... 5
3.1.- Description of the controls and the parts........................................................................ 5
3.2.- Use.................................................................................................................................. 6
4.- MAINTENANCE............................................................................................................................ 7
4.1.- Replacing the batteries ...................................................................................................7
4.2.- Cleaning and storage......................................................................................................7
4.3.- 5 TECHNICAL SERVICE................................................................................................ 7
page No.
SAFETY ADVICE
Before handling the equipment read the instruction manual and in particular the
SAFETY ADVICE section.
The symbol on the equipment means "PLEASE CHECK THE INSTRUCTION
MANUAL". It may also appear as a warning or caution symbol in this manual.
WARNING and CAUTION boxes may appear throughout this manual to avoid risk of
accidents to persons or damage to the equipment or other property.
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1.- GENERAL REMARKS
NOTE: This tester has been designed and checked in accordance with
IEC Publication 348, safety requirements for electronic measuring equipment, IEC
61268-1010 (EN61010) and other safety standards. Please follow all advice to
ensure safe operation.
1.1.- Description
Some of the most important features of the the T-3V are:
Ability to measure earth voltage.
The 2 mA measurement current allows floor resistivity to be tested
without tripping the earth circuit breakers in the circuit to be checked.
Battery operation.
Self-disconnecting. The timer automatically operates after 3~6 minutes
without operating any check. When the operating button and the timer
activator are pressed at the same time, the measurer is kept operating.
Memory reading function.
Open circuit indicator. The OFF LED indicates when the connection for
the test points is correct.
Compact and light.
Designed to meet safety standard IEC-1010 (EN61010).
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1.2.- Specifications
Measuring system
Earth voltage
Floor resisitivity
Earth voltage accuracy
Floor resistivity accuracy
Safety standards
Battery low indicator
Reading memory indicator
Ground earth resistance using constant
current inverter.
800 Hz, 2 mA approx.
0-200 V AC., 40 – 500 Hz.
Range and resolution:
0 ~ 20 Ω (0.01 Ω)
0 ~ 200 Ω (0.1 Ω)
0 ~ 2000 Ω (1 Ω)
± (1% read. + 2 dig.)
± 0.1 Ω or (if higher);
± (2% read. + 2 dig.)
IEC – 1010 (EN61010).
The symbol “B” appears on the display.
The symbol “DH” appears on the display.
Over-range indicator
Open circuit indicator
Timer (self-disconnection)
Indicator
Power supply
Sizes
Weight:
Accessories
“1” in the most significant digit (MSD).
The operating indicator (2) remains off.
After about 3 ~ 6 minutes without operating
any check.
3 ½ digit LCD (2000 accounts)
6 x 1.5 V batteries (R6C).
A. 163 x Al. 100 x Pr. 50 mm
Approx. 800 g (including batteries)
Test Pins (red – 15 m, yellow – 10 m, green –
5 m) auxiliary earth rods, carrying case,
instruction manual.
--------- EARTH RESISTANCE TESTER T-3V ------- Page No. 4
2.- SAFETY ADVICE
Carefully read the following safety information before using the tester.
Only use the tester as specified in this manual; otherwise the protection
offered by the tester may be decreased.
Environmental operating conditions:
1.- INDOOR USE
2.- Category III Installation
3.- Degree of Pollution 2
4.- Altitude up to 2,000 m.
5.- Max. relative humidity. 80%
6.- Ambient temperature 0 – 40 °C
-
WARNING: Handle the rods without connecting them to the equipment.
Observe the following international electrical symbols shown below:
The tester is protected by double isolation or reinforced isolation.
Warning! Risk of electrical discharge.
Warning! See this manual before using the tester.
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3.- INSTRUCTIONS FOR USE
3.1.- Description of the controls and the parts
[1] Female connector for earth connection
[2] Operating open circuit indicator
[3] Reading memory switch
[4] Timer deactivation button
[5] LCD Display
[6] Female connectors for “line” conductor
[7] Function switch
[8] Ohm range switch
[9] Operating button
[10] Timer activation key
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3.2.- Use
Before starting measurements, carefully read the Safety Advice section.
Connecting the test pins:
Connect the green, yellow and red test pins to the terminals E, P and C with the
earth rods P1, C1 placed in the ground "in a straight line" (see figure).
Place the function switch [7] onto the ACV position and ensure that the voltage
reading is less than 10 V AC. If not the accuracy of the earth resistance
measurement cannot be guaranteed.
If the PUSH-ON [9] button is pressed and the operating indicator [2] does not
come on, thisl means that there is an open circuit between the test pins.
200V
~
5 10m
~
5 10m
~
Place the range switch [8] on the appropriate scale and the function switch [7]
on position "Ω". Then press PUSH-ON [9] and TIMER ON10] at the same time
and read the value on the indicator.
NOTE: When none of the E, P and C terminals is connected to the test pins, a
reading between 300 and 600 is normal (in function Ω, range 2 kΩ).
Red
Yellow
Green
EARTH
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4.- MAINTENANCE
4.1.- Replacing the batteries
The batteries must be replaced when the symbol “B” appears in the lower left
hand corner of the LCD indicator:
1. Disconnect the test pins from the instrument and switch it off.
2. Use a screwdriver to loosen the screw on the rear cover. Slide off the cover,
remove the batteries and replace with new ones of the same type.
3. Replace the rear cover and tighten the screw.
4.2.- Cleaning and storage
Warning! : Avoid water getting into the case to prevent electrical discharge or
damage to the tester.
Periodically clean the case with a soft cloth dampened with water and
detergent. Do not use abrasives or solvents.
If the instrument is not going to be used for more than 60 days, remove the
batteries and store them separately.
4.3.- 5 TECHNICAL SERVICE
In the event of any equipment failure or any operational queries please contact
the technical service of CIRCUTOR S.A.
CIRCUTOR S.A. - After sales service
Vial Sant Jordi, s/n
08232 – 08232 Viladecavalls
tel. – (+34) 93 745 29 00
fax - (+34) 93 745 29 14
E-mail : central @ circutor.es
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