Hioki FT3151 Earth HiTester

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 FT3151 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.

• 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 voltage: 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 batteries × 6 (at least 500 operations), or LR6(AA) alkaline batteries × 6 (at least 1400 operations) Note:30 seconds measurement, 30 seconds off operating time
• Dimensions: 164 mm(6.46 in)W × 119 mm(4.69 in)H × 88 mm(3.46 in)D
• Accessories: AUXILIARY EARTHING RODS 9214 ×2, MEASURING CABLE 9215 (black 5 m (16.41 ft), yellow 10 m (32.81 ft), red 20 m (65.62 ft), one each, CABLE WINDER × 3), CARRYING CASE 9393 × 1, Hand strap × 1, R6P (AA) manganese batteries × 6

• Earthing resistance: 10 Ω (0 to 11.5 Ω), 100 Ω (0 to 115 Ω), 1000 Ω (0 to 1150 Ω), Accuracy: ±2.5 % f.s(* when using 2-pole method, 100 Ω, 1000 Ω ranges only)
• Earth voltage: 30 V (0 to 30 V), Accuracy: ±3.0 % f.s.
• Operating method: AC potentiometer method
• Functions: Switchable measurement method (2-pole, or 3-pole method), Switchable testing frequency (575 Hz, or 600 Hz), Auxiliary earthing (P/C pole) resistance check
• Power requirements: R6P (AA) manganese batteries × 6 (Continuous use at least 350 operations), or LR6 (AA) alkaline batteries × 6 (Continuous use at least 1100 operations)(under 30 seconds measurement, 30 seconds off operating time condition)
• 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)

• Hioki FT3151 Datasheet.pdf
• Hioki 3151 Manual.pdf