What is Precise Measurement with an Earth Megger?
When the necessary checks of earth voltage are carried out, the switch is set to the phase-to-earth voltage position. The earth voltage is displayed, and if a value greater than 10 volts is seen on the display, the earth measurement may be faulty. To prevent these situations, the power supply of the tested device must be turned off, or another measure to reduce the voltage must be taken. Furthermore, it is of great importance to obtain the necessary procedures and information from companies and engineers providing earth grounding measurement services in Gebze.
What are the Considerations?
A very similar situation occurs with the sensitivity settings in multimeters used in precise measurement systems. When performing earth grounding measurements in Gebze, the devices must be set to the 2000 ohm range. During the grounding test, the LEDs are activated, and if the earth resistance is low, the switch should be set to the 200 ohm or 20 ohm range. The displayed values are the earth resistance of the grounded elements. When performing earth grounding measurements and other procedures in Gebze, the cables must absolutely not touch each other when connected. Accordingly, the cables should be passed over or under each other. If the cables touch each other or measurements are taken in a mixed manner, it will cause the devices to read the voltage incorrectly. If the resistance of the rods is too high, it will also show incorrect measurements, and the rods should never be pressed into damp soil. It must also be checked whether the cables are properly pressed against the devices and equipment.
