Inside of an LV distribution pillar

[Guitarguy]

Thought some of you would like to see the inside of one of these, they are very common on the LV underground network. Exposed busbars, an ammeter per phase, voltmeter. cables are- 2x .2 PILSTA, 1x .1 PILSTA, 3x .2 Solidall PILSTA and 1x .1 PILSTA Neutral solidal from the tx. We were trying to identify a cable and that is an induction ring going to a GENNY.

 

[Hager]

We got one of them near were i live ours does 230v and 415V phase un-known problem single as it supply houses and a pub.

I've got one of them cut out white things it's got a 800KA fuse in it i think amp still un-known

 

[Guitarguy]

It will have 3 phases in there. It has a 300kva transformer behind it and the fuse holders have got 315A (IIRC) fuses in them. The fuse holders can have 630A fuses in them if the circumstances allow

 

[kai]

Are those big fuses the ones that protect your service feed cable upstream of the main cut-out fuse???

 

[RF Lighting]

Yep

 

[JohnD]

yum yum, white porcelain

 

[RF Lighting]

The don't make 'em like they used to

 

[Adam_151]

You got one of those automatic devices for dropping fuselinks into ways suspected of having a cable fault?

Was ever so impressed when I saw one being used 400A BS88 dropped in, blew straight away, quiet as a mouse

The state of the cable was sometime to behold though... as was the fact that it started off with a bloke in a small van, and by lunchtime this had grown to 3 or 4 vans, a trailer and a mini-digger

 

[Guitarguy]

You got one of those automatic devices for dropping fuselinks into ways suspected of having a cable fault?

Was ever so impressed when I saw one being used 400A BS88 dropped in, blew straight away, quiet as a mouse

The state of the cable was sometime to behold though... as was the fact that it started off with a bloke in a small van, and by lunchtime this had grown to 3 or 4 vans, a trailer and a mini-digger

Our company are trialing those auto devices at the moment, they have a remote control and aren't too bad. Otherwise you have to firmly put the fuse in place and hold it while its shaking about and sparking until the fuse blows .

They can get into a bit of a state and the scenario that you saw is just a normal everyday mains fault, the DNO digging up the footpath