@@SuperAWaC the modern stuff is so cheap it's often cheaper than maintaining it. Especially at the higher voltages a major maintenance on a 132kv above is a fair bit of work where you can replace and sf6 for not mucb.
The construction of these is so beautiful! It’s so fascinating how the fuses are made to fit into the switch! It’s like the machine was made to fit around the fuses lol. These things never stop to amaze me every time I see inside one! Thanks ray for sharing another great video 👍😉 👍👍👍👍👍THUMBS UP👍👍👍👍👍 HIGH1VOLTAGE1RULES
As for removing the sludge, when I had to clean the fryers at the restaurant I worked at, we had a special filter pump to recirculate the oil through the fryer vat to flush all the debris that builds up over the course of the day. Would it be practical to make something that would effectively turn the tank into a parts washer to give all the parts a good rinse, then once everything is a bit cleaner, drain the tank before the sludge settles. Then just fill with new oil and done. Might help to reduce the oil needed for maintenance purposes.
Yes and no, the original oil fill will have had a PCB oil base component, but over the years this has been changed many times, though the unit is never fully emptied of all oil, and in the case of the cables it never will be possible either, along with the transformers. Thus you treat the old oil as if it was full of PCB, as it likely has still a detectable trace of it. However the old oil is filtered , chemically treated to remove degradation byproducts, and then returned to service in the units, so the disposal volume is minimal, only the filters and scrubbers are going to be high temperature incinerated, while there is a small amount of top up oil used. The oil spends a large portion of time merely acting as insulation, kept dry and away from oxygen, so does not degrade much, so reuse is very common. Only time it will be replaced is if it fails the testing to ensure it is usable.
@@SeanBZA Here in the UK, PCB’s were never used in switchgear at any point. It is only found in some transformers, oil filled bushings and some CT’s that pre date 1987.
@@sinista.productions Same here, but there is no way to tell if there has been contamination with oil, especially as there are a lot of transformers maintained by metro and the suppliers that were running in either hot locations, or which were used to supply shipboard power plant in the harbour, and the oils would be mixed in service. You get a lot of PCB filled PVC wire still, easy to tell with the green goo that has started to leach from the cable ends, and not likely to be replaced any time soon, as it still passes insulation test. Still better than the gutta percha type which disintegrates on touch.
It needs a spray cleaning with Stoddard solvent, dispensed with compressed air. R-11 would be even better but that would get the ire of the environmentalists...
The lower the voltage, the more dangerous it gets in terms of flashover and damage caused. The lower the voltage, the higher the current. A 400V LV frame in a substation is scarier to me than the 11,000v ring main unit and transformer next to it.
@@sinista.productions Energy available is the same, just the higher voltage is capable of sustaining an arc longer, and the instantaneous power available is a lot higher, as it is limited only by the impedance of the supply cable and the supply transformer, while the low voltage side has extra impedance from the transformer. In any case flashover in that small a room is likely to be fatal no matter the source, though the 11kV breakers also have the fun thing of having a good chance of an oil vapour boost to the blast, while the 400VAC side can survive with fuses alone.
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Reyrolle equipment = quality. I have some Reyrolle BS196 plugs and sockets in my workshop, indestructible and so safe.
Good for another 50+ years now :-)
Preventive maintenance it’s the best way to make them last for a very long time
but why do that when we can not maintain them and then throw them away and replace them when they break? :^)
@@SuperAWaC the modern stuff is so cheap it's often cheaper than maintaining it.
Especially at the higher voltages a major maintenance on a 132kv above is a fair bit of work where you can replace and sf6 for not mucb.
Dankje voor de informatieve video, Leuk om dit zo eens in het echt te zien.
Beautiful construction, built to last. Happy new year Rodalco!
Lovely fitment on the parts.
Your best video this year!
It's a work of art really
I do like the older gear feel like it more of soul than the modern stuff.
The construction of these is so beautiful!
It’s so fascinating how the fuses are made to fit into the switch! It’s like the machine was made to fit around the fuses lol.
These things never stop to amaze me every time I see inside one!
Thanks ray for sharing another great video 👍😉
👍👍👍👍👍THUMBS UP👍👍👍👍👍
HIGH1VOLTAGE1RULES
As for removing the sludge, when I had to clean the fryers at the restaurant I worked at, we had a special filter pump to recirculate the oil through the fryer vat to flush all the debris that builds up over the course of the day. Would it be practical to make something that would effectively turn the tank into a parts washer to give all the parts a good rinse, then once everything is a bit cleaner, drain the tank before the sludge settles. Then just fill with new oil and done. Might help to reduce the oil needed for maintenance purposes.
Fascinating switch. Is there a earth switch for the fused circuit?
Ese aceite es pcb? Por que veo que tocas sin guantes.
Interesting piece of old equipment. They sure do not build things that well today.
So is this thing s giant 3 Phase Circuit Breaker?
Nice, do these oils contain PCBs?
Yes and no, the original oil fill will have had a PCB oil base component, but over the years this has been changed many times, though the unit is never fully emptied of all oil, and in the case of the cables it never will be possible either, along with the transformers. Thus you treat the old oil as if it was full of PCB, as it likely has still a detectable trace of it.
However the old oil is filtered , chemically treated to remove degradation byproducts, and then returned to service in the units, so the disposal volume is minimal, only the filters and scrubbers are going to be high temperature incinerated, while there is a small amount of top up oil used. The oil spends a large portion of time merely acting as insulation, kept dry and away from oxygen, so does not degrade much, so reuse is very common. Only time it will be replaced is if it fails the testing to ensure it is usable.
@@SeanBZA Thanks for your detailed reply Sean.
@@SeanBZA Thanks for the answer, I understand that below certain PPM it is no longer considered PCB.
@@SeanBZA Here in the UK, PCB’s were never used in switchgear at any point. It is only found in some transformers, oil filled bushings and some CT’s that pre date 1987.
@@sinista.productions Same here, but there is no way to tell if there has been contamination with oil, especially as there are a lot of transformers maintained by metro and the suppliers that were running in either hot locations, or which were used to supply shipboard power plant in the harbour, and the oils would be mixed in service.
You get a lot of PCB filled PVC wire still, easy to tell with the green goo that has started to leach from the cable ends, and not likely to be replaced any time soon, as it still passes insulation test. Still better than the gutta percha type which disintegrates on touch.
What this guy will invent to kill wasps!
all this stuff made in the UK... when we were a country to be proud of, unlike now :(
It needs a spray cleaning with Stoddard solvent, dispensed with compressed air. R-11 would be even better but that would get the ire of the environmentalists...
11kv, scary!
Low voltage as far as distribution systems go though, it gets higher from there towards the actual grid itself.
@@SeanBZA Yeah, but at that point it isn't scary anymore, it's shitpants
@@SeanBZA while it technically medium voltage you'll still have a bad time if you come into contact with it.
The lower the voltage, the more dangerous it gets in terms of flashover and damage caused. The lower the voltage, the higher the current. A 400V LV frame in a substation is scarier to me than the 11,000v ring main unit and transformer next to it.
@@sinista.productions Energy available is the same, just the higher voltage is capable of sustaining an arc longer, and the instantaneous power available is a lot higher, as it is limited only by the impedance of the supply cable and the supply transformer, while the low voltage side has extra impedance from the transformer. In any case flashover in that small a room is likely to be fatal no matter the source, though the 11kV breakers also have the fun thing of having a good chance of an oil vapour boost to the blast, while the 400VAC side can survive with fuses alone.