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 kzfaq.info/get/bejne/b5dxnrei3J6taWQ.htmlsi=NsI5zrAyf0qNyNfL
@Fr0zen1420 күн бұрын
I work on a pstn switch that's been online longer than i have been alive..
@SA-gf3th24 күн бұрын
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.
@theorovoicemailgreetingus590729 күн бұрын
Only feminine-voiced recordings
@theorovoicemailgreetingus590729 күн бұрын
SIT Tones are creepy to play in the dark.
@theorovoicemailgreetingus590729 күн бұрын
Pat Fleet
@theorovoicemailgreetingus590729 күн бұрын
Southern west Bell
@EmergencyChannel694202 ай бұрын
As a British person I appreciate that you've made a 50 Hz hum available
@jaminova_19692 ай бұрын
I like the aesthetics of that telephone room. It has a very 80's feel to it!
@airtondalmagro47322 ай бұрын
Trabalhei nas ARF ERICSSON , onde esta este equipamento ?
@paulphillips6752 ай бұрын
I think the camera will make me sea sick if I keep watching!
@thecrow25882 ай бұрын
Underground tunnels are fun to explore, like
@BunnybabuTananki2 ай бұрын
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.😊
@betzabenaranja51653 ай бұрын
fascinating 🥰
@thecrow25883 ай бұрын
Came for the urbex, stayed for the clicks I guess?
@suriva3 ай бұрын
well, thank you. byw I just uploaded an exploration vid
@lapub.3 ай бұрын
What was the purpose of the factory ?
@mxg753 ай бұрын
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.
@lapub.3 ай бұрын
They were still made at early 80's they were already "computerise" the switching matrix only where still mechanical. The switch evolution was mechanic "brain" and mechanic spatial "connexion matrix" electronic"brain" and mechanic spatial "connexion matrix" Computer "brain" and mechanic spatial "connexion matrix" Computer "brain" and analog electronic spatial "connexion matrix" Computer "brain" and digital "connexion matrix" The digital connexion matrix was designed in the early 70's since then the voice was digitized and send as packet just the same way it's done with Ethernet packets. but as you can imagine it cost a lot at the time; even if far more reliable (no more degradation in transmission) and huge multiplexing capability. So crossbars was still made even if already outdated they work well., just like you can still find DSL modem as you don't have fiber everywhere !
@suriva3 ай бұрын
exactly. there were common program controlled analog switches in late 1960s (#1ESS) while "brute force motor operated mechanical" panel switches form 1930s were still in operation well into 1970s ... step-by-step COs like #1 or 355 invented in early 1900s were in operation into 2000s... EWSD, 1000 S12, DMS10, 100 from 1980s could be still found here and there today.... and human operators were absolutelly common even after 2000s its just matter of last decade that companies dont wnat you to speak with real people.... "if you want an operator to hang up on you press star now"
@joeMama-tp8oj3 ай бұрын
So cool!
@user-vl5ye1sn3v3 ай бұрын
This video was either filmed after work hours or the employees are not making many phone calls......
@suriva3 ай бұрын
Many of the extensions are already migrated to VoIP. There are only 6 incoming trunks left and like 10 outgoing. Was filmed in the evening or on holidays, idk, I usually work late.
@alouisschafer72123 ай бұрын
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.
@suriva3 ай бұрын
yes there are many ways how to waste money.... this instalation has 4 diesel gensets so the utility network and transforming station aint "primary source" for the consideration of reliability...
@Spookyb3293 ай бұрын
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)
@suriva3 ай бұрын
isnt it amazing ? its still working btw... yes we got rid of most crossbars in mid to late 90s too
@lucaspod3 ай бұрын
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
@suriva3 ай бұрын
wait wait wait... there were few Nortel SL1s in 80s and literally tons of Crossbars and even Steps back then. and yes there was a fully digital UE installed in the same time period (with size of a fridge) but was not EMP proof...
@agn984 ай бұрын
Main peaks are at 100 ,200 ,300 and 400Hz. Secondary peaks at 4,76,150.. Hz
@suriva3 ай бұрын
yk harmonics.... the fundamental is 50 Hz... btw even harmonics superimpose to DC component and should not be there... tho the 3rd 150 Hz component may be significant cause neutral wire load...
@jbsimmons544 ай бұрын
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.
@suriva3 ай бұрын
Thank you for your interest sir. Those are the little "cultural" diffrences.. basicly we had same switching systems like #1 and 355A step, #1 and #5 crossbar, crossbar and 4A tandems, even clones of all-relay switches like CX100, CX1000, later 1ESS/4ESS based topology like E10, DMS10/100, S12, ESWD in late 90s/early 00s up to softswitches and VoIP which I do not consider interesting anymore..
@XFile2224 ай бұрын
Discurso de odio?¿ No, no me viene ninguno ahora. A si que me drogaron hasta el borde de la muerte cuenta?
@matbr69494 ай бұрын
Those top-down Nixies are super neat!
@suriva3 ай бұрын
imagine caller line identification in 1980s....
@eclairaigepublique354 ай бұрын
backroom
@suriva3 ай бұрын
yeahh I live in backrooms... somehow I noclipped there
@hauptuhrdotnetblog67004 ай бұрын
Thank you so much for doing this. I hope you are able to save the switch and the operator positions.
@suriva3 ай бұрын
yes Im doing my best to save it all.. hope I could mange to rent the space so I dont have to remove it.... but its like hell of a dough yk
@hauptuhrdotnetblog67002 ай бұрын
@@suriva renting the space while you get your plans together is good but obviously not a long term solution. One step at a time. You’ll figure it out.
@spootnewton71214 ай бұрын
From back when telephones were used for serving humanity instead of tracking and controlling us.
@RealVaderInvader5 ай бұрын
the proper way to tune a g string
@RealVaderInvader5 ай бұрын
3rd string on guitar
@federicofromvenice82055 ай бұрын
Assuming power factor =1 the power in Kw is 1.000 = 1 Mw, isn'it? In wich case the transformer has different power factor?
@suriva3 ай бұрын
non linear loads like SMPS have capacitive power factor, on the other hand motor drives are inductive.. nothing except a pure resistive load (classic light bulb) has power factor of 1... speaking of higher harmonics you also have to distingusih between Displacement Power Factor (1. hramonic only) and True Power Factor (all other harmonics) which aint the same in case of non linear loads like power electronics and saturated magnetic circuits....
@federicofromvenice82053 ай бұрын
@@suriva , thank you very much.
@OksanaTverdokhlebova5 ай бұрын
5:30 Sounds like Рокот
@user-tz3fd8hm4q5 ай бұрын
I personally like 50Hz transformer buzzing better than 60Hz transformer buzzing because well... I live in Europe where we have 50Hz mains.
@IrisbusAgoraNo100015 ай бұрын
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.
@IrisbusAgoraNo100015 ай бұрын
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.
@versedbridge40076 ай бұрын
Try humming with this playing, it's quite a trip.
@ClockworkJohn926 ай бұрын
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 ?
@suriva6 ай бұрын
jsou tam vzudchovody cca. 2x2m pro chlazeni, sani motoru samotniho je z mistnosti, vejfuk jak rikate
@janpesak82727 ай бұрын
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 :-)
@suriva6 ай бұрын
dobry den, jsme stale v provozu, postupna migrace na VOIP, ustrednu celou zachovam, snazim sa pronajmou prostory, kdyz ne, odsehuji jinde, muzu mit na Vas nejaky kontakt ?
@gabrielwaltermalter7 ай бұрын
Lain Referenzen
@WhitfieldProductionsTV8 ай бұрын
well would of been more fun if this would of been narrated by you and not a machine.
@suriva6 ай бұрын
next episodes..
@Journey_Awaits8 ай бұрын
Sounds like my noise cancelling headphones when there’s no sound playing
@georgen.80279 ай бұрын
This is in CZ?
@spotterinc.engineering52079 ай бұрын
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
@suriva6 ай бұрын
nah, its eastern block "copy", been produced since late 60' to mid. 80'
@lcarliner9 ай бұрын
perhaps the Connections Museum in Seattle, Washington, be contacted as they very well may be interested into its collection
@suriva6 ай бұрын
Im a big fan of connections museum however I will preserve this switch in fully working condition my self
@spacetrucker21969 ай бұрын
Where can I get a set up like this?
@suriva3 ай бұрын
try amazon or ebay, if not successfull try government agencies and nuclear facilities (btw. you can get anything in Ukraine nowadays)
@user-wb6fn9kn6h9 ай бұрын
I accualy have it in my basement bcs its from an old trafo i applaied 23kv to it and it sounded nice(i am an engi of electronics) btw i live in eu and also have 50 hz here in croatia
@patriksvarc64489 ай бұрын
Kdepak to je ?
@suriva6 ай бұрын
nemam tuseni
@redsquirrelftw10 ай бұрын
Wow it's so cool that it's actually still in use. These are before my time but we have a DMS100 in our building and manage many other ones too. They keep talking about decommissioning them but I have a feeling it won't happen in my career. It's cool though how this tech was designed with such a long life span.
@suriva10 ай бұрын
thanks for the reply. do you mean SL-100 which is DMS100s PBX version ? DMS100 is fairly large PSTN switch, both definitelly worth saving !
@redsquirrelftw10 ай бұрын
Yeah DMS100, we manage a few 200's too! Fairly large telco. I do hope that if they decom them they don't just scrap it, would be cool to get dibs on some of that hardware. I wouldn't know how to make it work but would be a cool novelty to at least setup the racks and stuff.
@suriva10 ай бұрын
kzfaq.info/get/bejne/Y56hncmBzLylcac.html you wouldnt be the first one to have dms100 in a garage :)
@hauptuhrdotnetblog67002 ай бұрын
@@redsquirrelftw you have to do this. If you can find the space you should do it. Live on a farm run it with solar. Haha. There are people out there that can help you get it going.
@supercellex4D10 ай бұрын
serial experiments lain type beat
@thecrow258810 ай бұрын
Thanks for subscribing. I watched your channel before but then lost track of it. You have some unique and enjoyable content. I still laugh at your description of the absurdity of some H&S regulations.
@suriva10 ай бұрын
oh yeah, appreciate your feedback. hope you get more folloers soon. take care.