Earth resistance meter manual

Earth Ground Resistance Tester Instruction Manual FEATURES • If the meter is not to be used for periods of longer than 60 days, remove the batteries Instruction manual. 3 Double Insulation Instrument has been evaluated and complies with insulation category III (overvoltage category III). Pollution degree 2 in accordance with IEC Insert the four electrodes at equal distances (and in a straight line) at an interval of 1 to 30m ( to ’) apart. The depth should be 5% (or less) the distance between the electrodes. For example: if the distance between the electrodes is 5m (16’), the electrodes should be inserted to a depth of 25cm (10”). Resistance Earth Voltage Potential Ranges Accuracy Specification Measurement Characteristics (All at 75°F ± 41°F, resistance and voltage functions. EARTH GROUND RESISTANCE TESTER 2/3 POINT FALL OF POTENTIAL 6/20 Printed in U.S.A. Form No. P © IDEAL.

Earth resistance is measured in two ways for two important fields of use: 1. Determining effectiveness of "ground" grids and connections that are It is not the intent of this manual to go too deeply into the theory and mathematics of the subject. As noted in the references at the end, there are many excellent books and papers that cover. The resistance-to-earth of a buried electrode, such as a ground rod, or an anode, for example - 3-Electrode Application • The resistance between two buried electrodes, such as two ground rods, or two anodes - 2-Electrode Application. The MILLERD has a resistance measurement range (with automatic ranging) from Ω to 10MΩ. re: earth resistance of common earth electrode of commercial electric power system, etc. Re: reading value of instrument earth resistance. G. Replacing Battery 2) Please do not replace the battery during test. Please turn the range switch to off and remove testing leads, control bar, etc before replacing the battery to avoid electric shock.

the electrodes (S), the earth’s average resistivity to a depth equal to the electrode spacing (S) can be obtained by applying the following formula: ρ = 2 π S R where R is the resistance value in ohms as determined using the resistance meter, ρ is the resistivity in www.doorway.ru, π is the constant , and S is the electrode separation in cm. The resistance follows from Ohm’s law, R = V/I. The system shown in Figure 5 can be simplified to the resistance of the electrode under test, Rg and the resistance of the other electrodes in parallel, i.e. R1 || R2 || R3 || Rn. Therefore, the current induced by the test voltage is I=V/[Rg+(R1 || R2 || R3 || Rn)]. Measure earth resistance, about 5 seconds. Measure Earth Voltage, about 2 seconds. — Low battery indication. — Power: AA V X 6 12V x 1 Battery. — Weight: approx. g. — Dimension: (L) x (W) x 70(D) mm. — Standard Accessories: Test Wires, Earth wire, Auxiliary Earth Bars, Instruction Manual, Battery Carrying Case.