73 entries.
I am having trouble correlating motor class insulation and its relation to B rise and F rise. For example, can you have a 65 degree ambient with Class F insulation and meet B rise, why or why not?
Sir Ver
Good day, im working in hospital facility, voltages in our distribution line are L1N=115v, L2N=120v, and L3N=220v, but the line to line voltage is 230v, QUESTION-what do you think is the problem. any suggestion or recommendation please. thanks
Good day, im working in hospital facility, voltages in our distribution line are L1N=115v, L2N=120v, and L3N=220v, but the line to line voltage is 230v, QUESTION-what do you think is the problem. any suggestion or recommendation please. thanks
Hi Ver,
The book you have titled "Introduction to Power System Protection" is not the "Practical Power Systems Protection".
I suspect its from people from Schweitzer Engineering Laboratory (SEL) but I simply can't find it.
If you have any ideas please let me know.
Thanks and regards
Alex
The book you have titled "Introduction to Power System Protection" is not the "Practical Power Systems Protection".
I suspect its from people from Schweitzer Engineering Laboratory (SEL) but I simply can't find it.
If you have any ideas please let me know.
Thanks and regards
Alex
Greetings Ver!
It’s my pleasure to have your contact.
I have query regarding the time-curve characteristics of the circuit breakers.
I prepared a circuit breaker coordination considering LSIG trip unit protection from downstream to upstream.
How to prepare time current curve in excel format? Is there available software for this particular requirement? Please advise.
It’s my pleasure to have your contact.
I have query regarding the time-curve characteristics of the circuit breakers.
I prepared a circuit breaker coordination considering LSIG trip unit protection from downstream to upstream.
How to prepare time current curve in excel format? Is there available software for this particular requirement? Please advise.
Hi Ver,
The book titled "Introduction to Power System Protection" is of interest to me and I would like to purchase it but I believe that is NOT its title.
Do you by any chance know its official title?
Thanks and regards
Alex
The book titled "Introduction to Power System Protection" is of interest to me and I would like to purchase it but I believe that is NOT its title.
Do you by any chance know its official title?
Thanks and regards
Alex
Sir, I am sorry for not giving all detail about the design of transformer. The detail of transformer are as:
A 2 winding 3 phase transformer of 33kV/440V, 2MVA has short circuit voltage is 6.5%.I have to put the right value of short circuit power in software so that transformer can operate with minimum loss.
I have applied common approach but not getting right value. Please let me know some approach.
A 2 winding 3 phase transformer of 33kV/440V, 2MVA has short circuit voltage is 6.5%.I have to put the right value of short circuit power in software so that transformer can operate with minimum loss.
I have applied common approach but not getting right value. Please let me know some approach.
I have to know about design of two winding transformer.
SC Voltage
Isc
%imp
SC Voltage
Isc
%imp
Sir,
My questions is, if your building has a large load and you are advised by the power provided to have a separate power supply. Who's responsible in providing transformer and KWH meter. Is it the customer or the power provider. Thank you.
My questions is, if your building has a large load and you are advised by the power provided to have a separate power supply. Who's responsible in providing transformer and KWH meter. Is it the customer or the power provider. Thank you.
Hi Sir,
Thanks for the info, but how about cells C10 to C17? Looks like interpolation to me, since values were taken using long time pick-up and instantaneous pick-up, but I think I am missing something. Sorry to bother you, I really wanted to learn this excel stuff. This will be very useful for my PEE TER without using ETAP.
Regards
Thanks for the info, but how about cells C10 to C17? Looks like interpolation to me, since values were taken using long time pick-up and instantaneous pick-up, but I think I am missing something. Sorry to bother you, I really wanted to learn this excel stuff. This will be very useful for my PEE TER without using ETAP.
Regards
Hi Sir,
It is the one that I downloaded in your website sir.
Here's the path:
https://pangonilo.com/tutorials/time-current-curves/time-current-curve-part-2-discrimination
Regards
It is the one that I downloaded in your website sir.
Here's the path:
https://pangonilo.com/tutorials/time-current-curves/time-current-curve-part-2-discrimination
Regards
Sir,
I just want to ask something in the attached excel file for Time-current curve, Sheet3, Cells C10 to C17. Are these values interpolated? I also want to know how did you arrive for the values in cells A9 to A18 Sheet3.
Thanks!
I just want to ask something in the attached excel file for Time-current curve, Sheet3, Cells C10 to C17. Are these values interpolated? I also want to know how did you arrive for the values in cells A9 to A18 Sheet3.
Thanks!
Hello, sir!
I don't know how to modelling autotransformer in ETAP. It's possible to modelling autotransformer?
Thank you!
I don't know how to modelling autotransformer in ETAP. It's possible to modelling autotransformer?
Thank you!
I'm performing a coordination study on a distribution at my school. I'm not sure how to estimate or calculate the MVAsc or X/R ration of our utility. Please help if possible. Thank you.
hi, my sir
iam from iraq electricls eng
i cant understanding the time and current
curve tripping i need pdf examples description prosiduer for the curve if you could help mi
i will be very glad from you and thank to you
iam from iraq electricls eng
i cant understanding the time and current
curve tripping i need pdf examples description prosiduer for the curve if you could help mi
i will be very glad from you and thank to you
It's been a long time sir. Gusto ko lang po malaman kung kamusta na kayo? I hope you remember me. It's about 22 years. Sana po wag niyo naman po baliwalain itong message ko sa inyo. Bilang anak ang tanging gusto ko lang naman ay makilala yung tunay kong ama. Napakaimportanteng tao niyo po sakin. Ikaw yung inspirasyon ko sa mga pag aaral ko, na sana isang araw kapag lumaki na ako't nagkatrabaho , hahanapin ko kayo. Sana po mabasa niyo po itong message ko. I am now a 3rd year college student taking up Bachelors Degree in Computer Network Administration. Hindi lang naman po ako simpleng tao eh. I was part of your past sir. I hope kialla niyo yung mama ko, Jacqueline Simon . She said that I can find you in the internet and this is it. I've finally found you. The first time I saw your picture talagang naramdaman ko na po. Luksong dugo kumbaga. Halos kamukang kamuka ko po kayo. Im happy to see you in the picture but yet I want to talk to you personally. Im now 22 years old. I think my age is enough to know this matter. Alam niyo, bilang anak na gustong gusto ko kayong makilala ng lubusan. Lalo na hindi ko kayo nakita man lang sa paglaki ko. I hope you will see this message. This is the only way to contact you personally. This is my email if ever you want to contact me, [email protected] .Mag iingat po kayo lagi. Thank you.
gud am sir ver
system voltage of utility is 13200V (L-L) primary, 400V(L-L)secondary, so may question is:
where i point my tap changer to come up to 400V system secondary?
can u give me sample how to bank 250kVA XF to attain my secondary voltage.
thank u
system voltage of utility is 13200V (L-L) primary, 400V(L-L)secondary, so may question is:
where i point my tap changer to come up to 400V system secondary?
can u give me sample how to bank 250kVA XF to attain my secondary voltage.
thank u
What is the relation of transformer percent impedance to its reactive power capability?
good day,,,i want to ask that,when we need to put a transformer a building?how much the load limit that we need to put a transformer?
where do i ind the regulations appertaining to solar and the grid as far as connection and fitting
https://pangonilo.com/earth-fault-loop-impedance-calculation/2
In the link above page 2, earth fault loop. at the bottom you mention is 81 metres. Zs / Z. But Z already have 25 metres. I think you are saying 81 times Z? which is 81 * 25 meters for maximum length?
In the link above page 2, earth fault loop. at the bottom you mention is 81 metres. Zs / Z. But Z already have 25 metres. I think you are saying 81 times Z? which is 81 * 25 meters for maximum length?