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3143 EARTH HiTESTER

Ground resistance meter
Say goodbye auxiliary grounding rods with the 3143

Grounding is increasingly important for the safe operation and maintenance of communications equipment and many other types of facilities. However, in an urban environment where the ground is covered with concrete or asphalt, conventional measurement methods that require inserting auxiliary grounding electrodes are difficult to use. The 3143 uses a new measurement principle that makes auxiliary grounding electrodes unnecessary, so it can be used to measure ground resistance on paved roads.

BASIC SPECIFICATIONS

Ground Resistance
20.0 to 49.9 ohm (±10 % rdg.)
50.0 to 500.0 ohm (±5 % rdg.)

Ground Voltage
0 to 10 V (±5 % rdg.)

Principle of Operation
voltage comparison method (Measurement of voltage at loop impedance serial resonance)

Open Circuit Voltage
1 V AC peak typ.

Measurement Current
3.6 mA AC max. (With terminals shorted)

Measurement Frequency
100 kHz to 1.5 MHz

Features
Energy saving mode (after 3 minutes with no operation, displays "HOLD" and enters the standby state), Resonance indicator (bar graph indicator shows approximate location of resonance point), Battery check

Power Supply
LR6(AA) alkaline battery × 4, (Continuous use 8 hours)

Dimensions, mass
155 mm (6.10 in) W × 98 mm (3.86 in) H × 49 mm (1.93 in) D, 380 g (13.4 oz) (main unit only)

Accessories
9265 MEASUREMENT CABLE (black 1 m(3.28 ft), red 20 m(65.62 ft), one each; 9216 CABLE WINDER ~1), 9338 CARRYING CASE (1)

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3151 EARTH HiTESTER

Ground Resistance meter
3-electrode measurement on the 3151 gives greater precision !

Ground Resistance measurement involves factors that are not encountered during ordinary resistance measurement, such as polarization of the earth, the influence of grounding current due to leak current and grounding voltage, and the influence of auxiliary grounding resistance. The 3151 is able to make more accurate measurements more safely under difficult conditions because it uses the alternating current potentiometer method to provide measurement accuracy, and because it contains features such as an auxiliary grounding resistance check feature and measurement frequency switching.

BASIC SPECIFICATIONS

Ground Resistance
10 ohm (0 to 11.5 ohm), 100 ohm (0 to 115 ohm), 1000 ohm (0 to 1150 ohm), 3 ranges (±2.5 % f.s.)

Ground Voltag
30 V (0 to 30 V), (±3.0 % f.s.)

Operating Method
AC potentiometer method

Open Circuit Voltage
50 V AC max.

Measurement Current
15 mA AC max. (3 mA AC max. when using the two electrode method)

Measurement Frequency
575 Hz (with 3a or 2a selected) or 600 Hz (with 3b or 2b selected)

Power Supply
R6P(AA) manganese battery × 6 (at least 500 operations), or LR6(AA) alkaline battery × 6 (at least 1400 operations)
Note:30 second measurement, 30 second off operating time

Dimensions, mass
164 mm (6.46 in) W × 119 mm (4.69 in) H × 88 mm (3.46 in) D, 800 g (28.2 oz)

Accessories
9214 AUXILIARY EARTHING ROD (2), 9215 MEASURING CABLE (black 5 m (16.41 ft), yellow 10 m (32.81 ft), red 20 m (65.62 ft), one each 9216 CABLE WINDER ~ 3), 9393 CARRYING CASE (1)

 

 
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