Faut finding with a megger mft 1553

[james king]

hi all,

at collage this week and doing a bit of testing..... now i got a bit confused with the tests and what the megger reading mean eg can any one explain what reading you would get if

all R1+R2 test

1) if the megger say 0.00ohm at one skt but on all other 0.13ohm
2) megger say >99kohms on 1 sktt when all other are ok.

 

[telectrix]

1. short circuit at socket.
2. open circuit at socket.

 

[james king]

so would that be between live and earth as its a R1 R2 test. i take it a high reading would mean a loose connection ?

 

[telectrix]

correct.loose or not connected. possibly be either a faulty socket, or the socket not switched on, as well.