Farm call out

[Griffin]

Got a call to a farm today. The usual thing all barns and sheds fed overhead and TT'd. The Farmer said he and his livestock wer getting shocks during milking.
On arrival initialy found the only RCD in the place (feeding 4 barns and the milking parlour) was u/s.

I replaced this but testing the new 100A 100ma RCD it failed to trip on the 5x setting??

It was ok on the 1/2 and 1x test but not the 5x??? Has anyone seen this before.

Anyway it reset and held until I switched on the lights in the Milking parlour then tripped. I fixed the fault in one of the lights then all was well. Also replaced a 13a S/O with no earth with a RCD item and ran in new earth.

Any feedback on the RCD prob would be appreciated

A

 

[Guest123]

Hi.

Your 100mA RCD is probably S type....time delayed, this is why it wont trip at 5x. Your 1x result was probably between 250 and 300mS or there abouts.

 

[Griffin]

DUUUUUUUURRRRRR!!!!!

Just checked the empty box still in the back of the van covered in cow s**t . That would of course explain the >50ms test result.

I could post some pictures but I am sure you can imagine what the place was like.

Thanks

A

 

[Guest123]

No worries.

Done enough farms to know what it's like.

 

[ian.settle1]

Got a call to a farm today. The usual thing all barns and sheds fed overhead and TT'd. The Farmer said he and his livestock wer getting shocks during milking.
On arrival initialy found the only RCD in the place (feeding 4 barns and the milking parlour) was u/s.

I replaced this but testing the new 100A 100ma RCD it failed to trip on the 5x setting??

It was ok on the 1/2 and 1x test but not the 5x??? Has anyone seen this before.

Anyway it reset and held until I switched on the lights in the Milking parlour then tripped. I fixed the fault in one of the lights then all was well. Also replaced a 13a S/O with no earth with a RCD item and ran in new earth.

Any feedback on the RCD prob would be appreciated

A

You only do the X5 test up to 30mA and not 100mA

 

[hoover]

Got a call to a farm today. The usual thing all barns and sheds fed overhead and TT'd. The Farmer said he and his livestock wer getting shocks during milking.
On arrival initialy found the only RCD in the place (feeding 4 barns and the milking parlour) was u/s.

I replaced this but testing the new 100A 100ma RCD it failed to trip on the 5x setting??

It was ok on the 1/2 and 1x test but not the 5x??? Has anyone seen this before.

Anyway it reset and held until I switched on the lights in the Milking parlour then tripped. I fixed the fault in one of the lights then all was well. Also replaced a 13a S/O with no earth with a RCD item and ran in new earth.

Any feedback on the RCD prob would be appreciated

A

dont think you need to do a *5 test on a 100ma mate. Only on a 30ma.