Insulation resistance measurement is the procedure of measuring the insulation resistance between the conductive components and the earth. This measurement is crucial in ensuring the protection and reliability of electrical equipment.
The insulation resistance test (also usually recognized as a "Megger test") is a spot insulation test that makes use of an applied DC voltage and is carried out to decide the insulation resistance from a winding to earth or between person windings. This value is vital to be aware of when assessing the transformer's insulation condition. The measured insulation resistance is to be understood as a reference value used for comparison in measurements made at a later stage. In our take-a-look-at file, the Insulation resistance measurement is handled as a routine test, distinct from the applied Standards.
Standard of Insulation resistance measurement