@PYRS9 Las cuchillas se usan para cuando van a dar mantenimiento a otros equipos como los interruptores. Y obviamente el mantenimiento se hace con el equipo desenergizado, sin embargo la energía siempre se debe estar suministrando, y se suministra por un "camino secundario" en donde se encuentran las cuchillas, cuando se ha realizado el mantenimiento, se regresa al "camino principal" por donde estaba pasando la energía, y es cuando se abren las cuchillas.
The power plant i work at has two generator producing 84MW each. The generator output voltage in the line is 13.8kV. The primary transformer before entering the plant substation step it up to 115kV. That is the maximum line V we use in most mexico. I dont know where this video was recorded.
Eso solo permite trabajar en el transformador con mayor seguridad porque ya esta desenergizado, como cuando bajas el switch de tu casa para cambiar un foco, pero aqui el voltaje es un poquito mas peligroso por eso mejor de plano es "bajar el switch".
OK, on some other videos even with less voltage, there are arcs formed, here seems not to be, some say there are arcs only when disconnecting under load, some say that even that with no load the magnetic energy on the transformers can create the arc, I study electricity but i am not sure about this situation... any comments?
even with no load arcs can still be formed. There is as you mention the magnetising current of transformers but also the charging current caused capacitence of the transmition lines.
thanks, i had not paid much attention to the capacitance stuff. I think these ones also had the safe systems that send the capacitance energy or magnetic energy to ground or something, just like the safe air gap to ground found on tesla coils to send any potencial to ground.
I know when one output of my 12kv transformer touches anything metal, it arcs a teenie bit to it before coming in contact with it. I think it's because the xformer and the metal are at different voltage potentials. When disconnecting, the electricity wants to keep the metal at the same potential as long as it can. The arc strength varies directly with the size of the metal object, in this case, the long powerlines. I might be wrong though..
Well, they bring them in by crane of course, and then a tanker truck comes in to fill it with an insulating oil.(approx. 500gal) Then they connect both sides and use switches to energize it. Long process but simply stated.
At the factory where I work we've got 6 of those transformers and they are about 15 inches higher and wider :P Transforms 52.750 Volts to 400 Volts 3 Phase .
Well in that picture, it looks like thats a 138KV to 12KV, so its pretty heavy-duty compared to the one you speak of. Why are yours so big if they handle small voltage like that?
They are not sized according to Voltage but according to Electric apararent energy (KVA's). This one could be somewhere between 500KVA or 1MVA. That's what I think. I dont have any info about location.
To be more precise on my comment, today I checked the manual at the substation, the main transformer that steps up the 13,800 volt generator output to 115,000 volts, is of 10 MegaVolt-Ampere (MVA).
abren las cuchillas solo cuando tienen que reparar algo?
PYRS9 1 year ago
@PYRS9 Las cuchillas se usan para cuando van a dar mantenimiento a otros equipos como los interruptores. Y obviamente el mantenimiento se hace con el equipo desenergizado, sin embargo la energía siempre se debe estar suministrando, y se suministra por un "camino secundario" en donde se encuentran las cuchillas, cuando se ha realizado el mantenimiento, se regresa al "camino principal" por donde estaba pasando la energía, y es cuando se abren las cuchillas.
sersalaoli 1 year ago
89J
buen video... ponga mas
laloIqq 2 years ago
y como juntas las cuchillas denuevo? algun trabajador se anima a juntarlas?
wiiftube 2 years ago 6
@wiiftube La mayoría están motorizadas, es decir son abiertas o cerradas por motores.
sersalaoli 1 year ago
oies y donde esta el arco?
balita123456 2 years ago
no huge buzzing arcs here,just little zapping sparks.
form109 3 years ago
la lokura weon
dacvidyokpi 3 years ago
The power plant i work at has two generator producing 84MW each. The generator output voltage in the line is 13.8kV. The primary transformer before entering the plant substation step it up to 115kV. That is the maximum line V we use in most mexico. I dont know where this video was recorded.
Arkthurius 4 years ago
Eso solo permite trabajar en el transformador con mayor seguridad porque ya esta desenergizado, como cuando bajas el switch de tu casa para cambiar un foco, pero aqui el voltaje es un poquito mas peligroso por eso mejor de plano es "bajar el switch".
Arkthurius 4 years ago
eso permite trabajar en la subestacion ??
elreservista 4 years ago
OK, on some other videos even with less voltage, there are arcs formed, here seems not to be, some say there are arcs only when disconnecting under load, some say that even that with no load the magnetic energy on the transformers can create the arc, I study electricity but i am not sure about this situation... any comments?
Arkthurius 4 years ago
even with no load arcs can still be formed. There is as you mention the magnetising current of transformers but also the charging current caused capacitence of the transmition lines.
frosty956 4 years ago
thanks, i had not paid much attention to the capacitance stuff. I think these ones also had the safe systems that send the capacitance energy or magnetic energy to ground or something, just like the safe air gap to ground found on tesla coils to send any potencial to ground.
Arkthurius 4 years ago
I know when one output of my 12kv transformer touches anything metal, it arcs a teenie bit to it before coming in contact with it. I think it's because the xformer and the metal are at different voltage potentials. When disconnecting, the electricity wants to keep the metal at the same potential as long as it can. The arc strength varies directly with the size of the metal object, in this case, the long powerlines. I might be wrong though..
Andyman3k 4 years ago
that was not under load right?
jmartis2 4 years ago
buenisimo
kaio9000 4 years ago
How do they reconnect those?
greyegle 4 years ago
Very carefully.
volvo1971 4 years ago
jajajaja....!!
CARU840210HDFSSL04 4 years ago
Well, they bring them in by crane of course, and then a tanker truck comes in to fill it with an insulating oil.(approx. 500gal) Then they connect both sides and use switches to energize it. Long process but simply stated.
wildchild8635 4 years ago
that is one big ass transformer on the right
TheRealDj2quick 4 years ago
Actually, Auto's are bigger than that.
wildchild8635 4 years ago
wow
TheRealDj2quick 4 years ago
At the factory where I work we've got 6 of those transformers and they are about 15 inches higher and wider :P Transforms 52.750 Volts to 400 Volts 3 Phase .
MisterCrash84 4 years ago
Well in that picture, it looks like thats a 138KV to 12KV, so its pretty heavy-duty compared to the one you speak of. Why are yours so big if they handle small voltage like that?
wildchild8635 4 years ago
They are not sized according to Voltage but according to Electric apararent energy (KVA's). This one could be somewhere between 500KVA or 1MVA. That's what I think. I dont have any info about location.
Arkthurius 4 years ago
To be more precise on my comment, today I checked the manual at the substation, the main transformer that steps up the 13,800 volt generator output to 115,000 volts, is of 10 MegaVolt-Ampere (MVA).
Arkthurius 4 years ago
cute little zap-pooka sound¥^_^¥
WDX7770243546 4 years ago