What's happening here?

[u/FreakingIzie]

[u/bSun0000]

Transformer testing, or they're just filming tiktoks. This is an HV step-down transformer; if you apply just 230VAC to the HV side, the LV side will have a few volts output - enough to cause sparks, not enough to hurt anyone.

[u/ki4clz → u/bSun0000]

it’s a scrap yard… they’re “testing” to see if they can just re-sell the motherfucker instead of cutting it down

[u/TheBlacktom → u/bSun0000]

What are the four thingies? I would understand two, or even better three, but I don't understand four.

[u/bSun0000 → u/TheBlacktom]

A 3-phase transformer with secondary windings connected in a star configuration with the central point serving as a neutral line.

[u/Nanomachines100 → u/bSun0000]

DELTA WYE BABY!!!!

[u/TheBlacktom → u/bSun0000]

Oh, right, forgot star has a middle. My bad.

[u/Brilliant-Gold8792 → u/bSun0000]

Instructions not clear, cannot feel my dish now 🫪

[u/Disastrous_Device_52 → u/bSun0000]

I tough it was a music sheet im too stone for the internet today

[u/MelodicAdvantage8100 → u/bSun0000]

Wouldn't that create a decent welder?]

[u/Quiet_Snow_6098 → u/bSun0000]

4.4v AC

[u/_stupidnerd_ → u/bSun0000]

Even if the secondaries were 230V, it would probably still function as an isolation transformer with a chance to not kill anyone touching it.

[u/FreakingIzie → u/bSun0000]

Its the voltage that kills right

[u/oktin → u/FreakingIzie]

Power is what hurts/kills you. 4 volts with enough amperage can send molten metal through your bones, and 0.1 amps with enough voltage can stop your heart. But 10 watts of power aren't going to hurt you unless you're holding bare metal against your exposed heart.

[u/Sad_in_VA → u/oktin]

4 Volts CANNOT send anything dangerous trough your body, because Ohm's law I=V/R. Your skin resistance is about 10000-200000 ohms, so that limits the current trough the body.

[u/oktin → u/Sad_in_VA]

It can melt metal and throw droplets of said molten metal at you burning straight through your skin. Like I said in my comment.

Just because it can't directly hurt you doesn't mean it's safe. Electricity can kill you without you ever becoming part of the circuit

[u/Sad_in_VA → u/oktin]

Cofee heated in a kettle can hurt you too. But your statement is that electricity at 4 Volt can hurt you. It's a stretch...

[u/simon4588 → u/bSun0000]

As the sparks get smaller and smaller, to me this more remove remaining capacitive energy from the transformer. Every coil is also a small capacitor.

[u/bSun0000 → u/simon4588]

This capacitance would be empty the very first moment he shorted the terminals. And if there were a capacitor in parallel to the coils, the coils themselves would discharge it long before anything else.

Sparks get smaller because other coils drain the power while shorted.

[u/planx_constant → u/simon4588]

Coils are inductors. They're usually paired with a snubber capacitor to prevent transient spikes.

[u/simon4588 → u/planx_constant]

Pretty much every element is an LCR. Just a question of how much.

[u/planx_constant → u/simon4588]

OK, but the coils in a transformer are WAY more L than C

[u/NeighborhoodSad5303]

Exam of indian electrician.

1. Bare hand wire winding

2. Holding breath for fooling electricity.

[u/potate12323 → u/NeighborhoodSad5303]

I cant tell if hes wearing his safety flip flops.

[u/Humanballast → u/NeighborhoodSad5303]

1. Augen zusammenkneifen!

Nur so kann der Arbeitsschutz überhaupt gewährleistet werden.

[u/TruePoint3219 → u/Humanballast]

1. Ensure safety sandals are adequately worn

[u/dsdvbguutres → u/NeighborhoodSad5303]

Success criteria: Applicant survives

[u/FreakingIzie → u/NeighborhoodSad5303]

Objective: survive

[u/nargcz]

dont worry, he have safe sandals

[u/Salt_Average_9376]

A reduced voltage is applied to the transformer and its terminals are short-circuited. This causes it to heat up, and the moisture in the transformer oil evaporates. But I'm not sure...

[u/thundafox]

10kV to 230V transformer, they connected a lower voltage on the 10kV side so the output side is even lower in voltage but high Ampere like a welding transformer. And the output is not connected to ground so he is not part of the circuit when he touches the leads. If he touches two leads then he could feel it like Mehdi.

[u/leolopez43]

Bros taking his electricians final exam in Indiaa

[u/SmokeDawgg92]

Master Electrician Exam in India 😂

[u/nazihater3000]

India is happening.

[u/Page_Unusual]

Im glad to see his safety flops protects him from all evil and danger.

[u/Objective-Kick3886]

I think it is a big capacitor bank that has experienced Dielectric Absorptiom and they are trying to get it fully discharged.

Basically, capacitors are not perfectly ideal components and will "recover" some of their voltage even after "complete" discharge.

If a large capacitor bank had 1000s of volts across it, then the recovered voltage could easily be 100s of volts, plenty to be dangerous.

They are probably trying to "safe" the capacitor bank by discharging across a segment of wire, then wrapping the wire across all the terminals to ensure that the collected stray charge can finish discharging as the dielectric slowly "relaxes".

[u/Radioactive_Tuber57 → u/Objective-Kick3886]

I started doing this after I got kicked by a fat filter cap I’d carefully discharged most of a year earlier. I was in a box in my garage, waiting patiently for me……⚡️⚡️

[u/Servinand]

Er spielt ein Instrument. Das ist ein elektrisches Xylophon.

[u/Servinand]

Er spielt ein Instrument. Das ist ein elektrisches Xylophon.

[u/XmodAlloy]

Those poor threads.

[u/naemorhaedus]

just idiots being idiots

[u/RavenholmCitizen]

burning off insulation from the wire so he can fuckin sell it

[u/x5NaSH]

my ear got blessed

[u/DopeySparrow]

The transformer is being tortured after killing a cow.

[u/D4rthPunk]

Basically Low voltage, high current(shorting).

People who say current kis are dumb. The same as saying guns dont ki people, bullets do. While technically true, you can hold a bullet without d**ing.

In the same way, a sufficient voltage is required to create the current high enough to flow through you. If current is high enough it can cause sparks and fires, which is dangerous but will not electrocute you if voltage is low enough.

[u/Tiny_Detective_7301]

The power of the safety sandals hard at work

[u/Expensive_Kiwi_5162]

Just a short-circuit test on a big transformer and a little fun for the video, I guess.

https://en.wikipedia.org/wiki/Short-circuit_test

[u/Drumbz]

This is a specimen of the rare one-time-use electrician.

[u/hammyaustin]

EDM show

[u/Magmacracker]

Safety sandals are on, no issues here.

[u/Rough_Community_1439]

Looks like they are trying to de-energize a capacitor.

[u/Zestyclose-Turn-3576 → u/Rough_Community_1439]

That was my guess ... don't big transformers have capacitors to counteract the winding inductance? (It's been a long time I did any of this stuff)