same hum comes from my subwoofer it's making fucking music 😭

If I may give an advice ... never run a gen totally unloaded. Even when starting-up, use an old incandescent bulb of about 40/60W Cool gen it is !! Thanks for showing.

Milujem tieto naše európske Telco ústredne

8:36 is an Australian (Telstra) recording. (this wording is still in use, in fact I think this very recording is still in use in some places)

4:46

Any new update with this. Would like to see a more detailed video, not a panoramic view

This man has big balls💀💀

I remember those days of sitting my whole night in front of a large switchboards full of contactors at a local mall. It was super loud

Cool

1600kVA Electric Transformer Hum :Frequencies Sonic Visualizer : 50 Hz 100Hz 200 Hz 250 Hz 300 Hz... Best viewed with 1080p , the lower pitch 50 Hz is a bit fuzzy kzbin.info/www/bejne/b2KknIenrJ18b5Isi=NsI5zrAyf0qNyNfL

I work on a pstn switch that's been online longer than i have been alive..

Its using 5:14 40kva and it's a 1600Kva? That's like too little work for such a huge transformer, wasting too much inductive current at primary.

Only feminine-voiced recordings

SIT Tones are creepy to play in the dark.

Pat Fleet

As a British person I appreciate that you've made a 50 Hz hum available

I like the aesthetics of that telephone room. It has a very 80's feel to it!

Trabalhei nas ARF ERICSSON , onde esta este equipamento ?

I think the camera will make me sea sick if I keep watching!

Underground tunnels are fun to explore, like

Super sur. Your videos. Actually, II like transformer humming sounds, please upload me railway gates siren, railway gates, siren videos. At least 1 hour. Thank you so much super your videos, thank you, sir.😊

fascinating 🥰

Came for the urbex, stayed for the clicks I guess?

What was the purpose of the factory ?

I’m surprised a switch like this was built in the 80’s, I thought mechanical switches and the requirement for human operators for long distance calls were phased out by then.

So cool!

This video was either filmed after work hours or the employees are not making many phone calls......

Gonna be an awesome day when we energize 3 of those transformers (very similar type 10KV to 400V 1250kva rated) at the new main transformer and power distribution building we are setting up for a hospital complex. State of the art Siemens Sivacon S8 with integrated power monitoring and metering on the low voltage side. Some feeds are rated up to 1000 amps and we paralleled multipe 4x300mm2 aluminium cables to make that possible. Each transformer is rated at around 1300 amps per phase. Big stuff. The building that houses everything is set up very differently that this installation here. Each transformer has its own separate cell, fireproofed from each other and the HV side switchgear needed to have its own room, also fireproofed aswell as the Sivacon S8 whose room is also fireproofed. A fire detection system is also in place and I am a bit surprised they didnt go for an automatic CO2 fire suppression system aswell. We have a couple installations where that was specified. I believe the need for a fire suppression system is dependent on the accessibility of the electrical rooms and how a fire would affect the building.

Amazing that this was still in use, I started in Telecoms in 2003 and learnt about Crossbar (theory not maintenance) and even then it was nearly 10 years since the last crossbar exchange was closed in England! (1994)

I can't believe this was installed in the 1980s. Where I live , in that time frame there would have been an SL1 fully digital system instead

Main peaks are at 100 ,200 ,300 and 400Hz. Secondary peaks at 4,76,150.. Hz

I worked for GTE in the USA. Have to say that the outer frame panels are SUPERB! We didn't put up all those frame panels on ours and everything was directly accessible without removing anything. That said, the later computerized switching systems had enclosed frames, raised computer room floors, and air conditioning.

Those top-down Nixies are super neat!

backroom

Thank you so much for doing this. I hope you are able to save the switch and the operator positions.

From back when telephones were used for serving humanity instead of tracking and controlling us.

the proper way to tune a g string

Assuming power factor =1 the power in Kw is 1.000 = 1 Mw, isn'it? In wich case the transformer has different power factor?

5:30 Sounds like Рокот

I personally like 50Hz transformer buzzing better than 60Hz transformer buzzing because well... I live in Europe where we have 50Hz mains.

SNCF class Z 20500 at 25 kilovolts have a 100 Hz humming (certains have a 50 one, the 20510) but i prefer the continuous 1.5 kV than the AC 25 kV one for these trainsets.

My phone's refresh rate cycles at 50.84 Hz :( Also that's good when you're using 25 fps. Also, the frame rate and the humming make a good sync, sound like a four cylinder engine to me.

Try humming with this playing, it's quite a trip.

Hodně zajímavé místo. Chci se zeptat jako laik... ta příruba směrem ke stropu je asi výfuk z agregátu co pohání generátor??? A sání vzduchu do motoru je podle filtrů je jenom z místnosti ? To jsou ty místnosti nějak speciálně ventilované pře filtraci vzduchu ?

Zdravím, nějaký posun? Odhaduji také že bude někde CZ/SK, protože tam vidím i STP od inomy se mihnout :-) mám taktéž UK11, pokud se povedlo a chtěl by jste s něčím pomoct či ji propojit s IP světem, je možno :-)

Lain Referenzen

well would of been more fun if this would of been narrated by you and not a machine.

Sounds like my noise cancelling headphones when there’s no sound playing

This is in CZ?

This looks like an LM Ericsson PABX. If true, please advise the model number. I worked on many similar Ericsson PABX's in the 1970's