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What is the standard reading in megger testing to conclude that the equipment is passed and or failed?
Wiki User
∙ 12y ago
Meggers send voltage thru the cables to determine the resistance between, meggers like the mj145 have multiple settings from 100 volts to 1000v, a Megger showing a good reading will show megaohms thru its full band, a bad one reading will be indicated by it either reading 0 ohms or less then 30 ohms (depends on the circuit and what's between the wires) a bad indicator can also be a steady reading at low voltage then at higher voltage it spikes to a low ohm, or a low voltage, like as if u just created a short. What that shows is at low voltage your insulator is fine, but at high voltage it blows thru it, normally that means your Insolator around your wire is damaged.
Wiki User
∙ 12y ago
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