How to check earth resistance with megger?
How to check earth resistance with megger?
Answer
To measure earth resistance using a megger, you need to:
1. Connect the conductor under test to the L terminal of the megger.
2. Connect the E terminal of the megger to the earth.
3. Apply the test voltage for about a minute till a steady reading is obtained.
4. Record the insulation reading.
5. When the handle of the megger earth tester is rotated at a uniform speed, it directly indicates the earth resistance on the dial or calibrated scale.
6. Obtain a set of readings by burying the electrode P at various positions.
