3235 Earth Tester

3235

The 3235 Earth Tester is used as a convenient test set for simple, accurate measurements of earth resistance. The earth voltage can also be measured on the galvanometer scale by positioning the selector switch.

Specifications

Measuring Range:
Earth Resistance: 0 to 10 to 100 to 1000 Ω (Min. Scale Div. 0.1 Ω)
- Earth Voltage: 0 to 30V
Scale: Earth Resistance: 3-digit logarithmic continuous scale on measuring dial
- Earth Voltage: Uniform scale on Galvanometer
Accuracy:
- Earth Resistance:
±5% of 2 Ω (0.1 Ω or min. one div.) in the range of 0 to 2 Ω
±2.5% of 20 Ω (0.5 Ω or min. one div.) in the range of 2 to 20 Ω
±2.5% of 200Ω (5 or min. one div.) in the range of 20 to 200 Ω
±5% of 1,000 Ω (50 or min. one div.) in the range of 200 to 1000 Ω
Earth Voltage:
±5% of full scale value
Measuring Frequency:
500 Hz
Ambient Temperature Influence:
Variation in indication is within one scale division for temperature change by 20 ±20
deg.C
Battery Voltage Influence:
Accuracy is maintained within specified limit even if voltage decreases to 4V under
operating condition
Earth Voltage Influence:
Variation in indication is within the corresponding one scale division for the earth
voltages of up to 10V at commercial frequency.
Power Source:
Four 1.5V batteries (JIS SUM-1, ANSI D, Mono 1.5V or equivalent)
Insulation Resistance:
More than 20M Ω at 500V DC between terminals and case
Dimensions:
Approx. 122 x 190 x 124mm, not including accessories
Weight:
Approx. 1.5 kg for instrument only. Approx. 3.5 kg including all accessories
Accessories supplied at no extra cost:
Measurement leads 3pcs (green 5 m for earth plate, yellow 10 m for potential, and red 20 m), earth spikes 2pcs (one each for potential and current), carrying case 1pc, accessory storage bag 1pc