Fault on underground Sub Mains cable

[Rocboni]

Is nobody else thisnking this??

 

[Wilko]

Shouldn't we use the Z value at 0.37?

 

[Rocboni]

Sorry we probably should for mixed loads, In that case its even worse?

 

[paul291277]

Averaging 18inches

Me too, but I don't like to brag

 

[davesparks]

Is nobody else thisnking this??

Yes I'm thinking the same, and in my opinion you are correct.
But in the interests of 'being nice' I'm staying quiet so far.

 

[Rocboni]

Yes I'm thinking the same, and in my opinion you are correct.
But in the interests of 'being nice' I'm staying quiet so far.

In the interests of 'being nice' also i'll say no more....

 

[Pete999]

Stick a few hundred DC Volts up one end and watch the ground shake where the fault is.

 

[telectrix]

few hundred. 5kV should shift some dirt.

 

[StephenRowley]

Stick a few hundred DC Volts up one end and watch the ground shake where the fault is.

function gen a oscilloscope, look for the reflection, do the maths and bingo you'll know where the cable break is(good Luck)

 

[telectrix]

function gen a oscilloscope, look for the reflection, do the maths and bingo you'll know where the cable break is(good Luck)

long sds bit. drill down along the run. when the sds bit stops going bang, you've found the break.