Oil Circuit Breaker and CT's

Oil circuit breaker oil change and clean.
Inspection of the switching contacts which are in mint condition.
New oil inserted
Metering and Protection Current Transformers in rear of panel.
11 kV
I created this video with the TH-cam Video Editor ( / editor )

[@jackking5567]

Without these vids we'd never get to see the insides of equipment like this. Thanks for sharing.

[@emotionalpromax498]

Kids- Awesome video
Man- love ur explanation
Legend- first time seeing internal structure
Ultra legend-- Comparing with another world 😆

[@Engineer9736]

Thanks for sharing all these high voltage things! Very interesting to have some indepth look into these components.

[@mrclucker1969]

Looks nice inside - just hope the bushings don't fail their test!

[@samschannel531]

In Portland here, we have an ancient 57kv line that the power company wants to get rid of by like 2027. Massive 57Kv Oil breakers at every substation! I’ll have to ask them for equipment.

[@Taran72]

Thank you for sharing!!!! This is great! I love your channel!!!

[@Boetang123]

At least you have CT's on each phase. My company uses the Aron method which I hate as it make my brain hurt!!

[@rvihelipad2079]

Looks very similar to a Yorkshire IVIO-13 or 16 set up with the round tank and fixed contact portion.

[@Phil6219]

An interesting look inside, thanks for sharing :)

[@bobsmith24868]

Is that a kiwi accent I hear in the background; is one of my favourite youtubes in New Zealand?

[@RODALCO2007]

Yes you are correct.

[@1mrhamel]

@RODCALCO2007, Do you work for your local electrical company? Just curious what your field of work is.

[@ChumpusRex]

I was wondering why the CTs are different sizes. Then I worked it out. The protection CTs need to be bigger, because they need to remain accurate under overload conditions, so that the breaker trip unit sees an accurate measurement of the current.
The metering CTs don't need to remain accurate in overload, because overloads are rare and brief and won't materially affect the meter totals.

[@RODALCO2007]

That s 100 % correct . They are not allowed to saturate easily hence a large iron core. They need to accurately operate at 10 - 15 x their normal current.

[@douro20]

What do you wash them with? Acetone?

[@RODALCO2007]

If very dirty we use electroclean, normally rinse with clean mineral transformer oil.

[@Namenloser_]

for what you need such huge cts?

[@Namenloser_]

+BrAiNee Bug amd cpu heating

[@RODALCO2007]

200 Amps at 11000 Volts 3w yields in ± 5082 Amps at 240 Volts 4w

[@douro20]

I've seen bigger ones than that. They were on a net metering unit connected to a local power reseller (our city).

[@rot_studios]

AMD: bringing central heating to your home!

[@outtherefm]

We have the same ones :-)

[@samschannel531]

Not every day that you get to see the actual contacts of a circuit breaker!

[@HDXFH]

Looks new

[@bobbj77]

Class X for protection, metering do not have to be class X.

[@dirtmuhgert4768]

all of this is useless if you cannot terrorize wasps with it!

[@reactionallworld4159]

I want male female ocb

[@zaitonyahya4768]

Firus binti salim

[@DrDuckey]

LAST!

[@Namenloser_]

second