2007-10-17 23:38:54 · 2 answers · asked by ? 2 in Consumer Electronics ➔ Other - Electronics
It is safety testing.
Manufacturing insulation testers from 1kV to 10kV is where Megger started.
2007-10-18 08:53:00 · answer #1 · answered by Fred3663 7 · 0⤊ 0⤋
When I was an electrical fitter apprentice many moons ago we used a 500v mega, this was hand held meter with a scale reading infinity to zero ohms. Two wires from this would be attached to the electrical circuit to be tested, you would turn a handle to generate the 500v. The meter scale would then give a reading in ohms, ideally you would want a reading between 2000 ohms too infinity, according to the circuit being tested. If there was a short circuit you would read zero ohms not what you want to see. ( a copper wire would read zero ohms, a good insulator i.e rubber would read infinity)
So a Mega is a device for measuring MegOhms
(1000,000 Ohms) The reason for the test is to ensure their is no possibility of being electrocuted when using the appliance
2007-10-18 07:13:57 · answer #2 · answered by Paddy 4 · 0⤊ 0⤋