Breaker cable Megger Test at 5000V DC | Y Phase Fault Detected | Electrical Testing Live In this video, we are performing a VCB breaker incoming cable megger test with the megger set at 5000 DC volts. ✅ B phase insulation is good ✅ R phase insulation is normal ❌ Y phase showing 0.0 MΩ, insulation failed or shorted to earth #fblifestyle #ElectricalEngineer #SubstationWork #VCBTesting #MeggerTest #InsulationResistance #HighVoltageTesting #66kVSubstation | Er Muhammad Miyaji

A Megger test is an electrical test used to measure the insulation resistance of electrical circuits, cables, and equipment. The test is typically performed with an instrument called a Megger, which is a type of insulation resistance tester. It applies a high voltage (usually between 250V to 5kV) to the electrical component and measures the resistance of the insulation. The purpose of a Megger test is to ensure that the insulation around conductors is intact and effective in preventing electrica