Features

4 ½ digit LCD Display with pleasant backlit.

3 terminal and 4 terminal Measurement Method.

Earth Resistance Range 0.01Ω to 19.999kΩ

4 Wire Soil Resistivity Measurement

Replaceable Alkaline Batteries

Earth Measurement Voltage up to 200V

Ratio Metric Synchronous Rectification

Store reading access with Galvanic isolated USB port

Internal memory 1000 records

Bluetooth Interface and Cloud Connectivity through Motware App

Auto-ranging

Lo Bat Indication

Applications

The integrity of the grounding system is very important in an electrical power system for the following reasons:-

To maintain a reference point of potential (ground) for equipment and personnel safety. To provide a discharge point for travelling waves due to lightning. To prevent excessive high voltage due to induced voltages on the power system Therefor to maintain sufficiently low resistance values of grounding systems, their periodic testing is required. The testing involves measurement to ensure that they do not exceed design limits. The measurement of ground resistances may only be accomplished with specially designed test equipment. The most common method for measuring ground resistance uses the fall-of-potential principle of alternating current (AC) at higher frequency circulating between an auxiliary electrode and the ground electrode under test; the reading will be given in ohms and represents the resistance of the ground electrode to the surrounding earth. Soil Resistivity is also the key factor that determines what the resistance of a grounding electrode will be, and to what depth it must be driven to obtain low ground resistance. The resistivity of the soil varies widely throughout the world and changes seasonally. Soil Resistivity is determined largely by its content of electrolytes, consisting of moisture, minerals, and dissolved salts. A dry soil has high resistivity if it contains no soluble salts. It figures has a direct impact on the overall sub-station resistance and how much earth electrode is required to achieve the desired values. Lower the resistivity, fewer the electrodes required to achieve the desired earth resistance value. Hence the Soil Resistivity is also important test.

Typically used for:-

Substation Earth Testing.

To test telecom tower grounding, Railways Earthing.

To test the quality of grounding without disconnecting the ground rod under test.

Earth Resistance of Grid.