Dave Gordon
Dave Gordon
  • Видео 53
  • Просмотров 3 768 558
Transformer Current and Power
Demonstration of voltage and current ratios, and explanation of why the primary voltage increases when loads are added to the secondary.
In my "Buck-Boost Transformers" video I use the concept of relative polarity to adjust voltages up or down by connecting primary and secondary windings in either an additive (in-phase) or subtractive (out-of-phase) orientations. ruclips.net/video/aOtSnJo6PfM/видео.html
In my "120/240 V In-Phase or Out-of-Phase" video I address the concept of reference and how that can appear to flip one waveform relative to another. ruclips.net/video/nOSYHUxHxG8/видео.html
In my "Dual Voltage Windings - Part 1" video I briefly mention polarity as relates to the H1/H2/H3/H4 ...
Просмотров: 13 619

Видео

Transformer Ratios and Taps
Просмотров 16 тыс.Год назад
An explanation of how Voltage Taps are used to manipulate Transformer Primary to Secondary Ratios in order to ensure proper output voltages.
Transformer Secondary Winding - Mutual Induction
Просмотров 16 тыс.Год назад
Demonstration of how voltage is induced into a transformer secondary winding.
Transformer Core and Cooling
Просмотров 15 тыс.Год назад
A description of how and why a transformer core works, and the importance of keeping a transformer within its temperature rating.
Transformer Primary Winding
Просмотров 24 тыс.Год назад
Description of a primary winding of a transformer and how it limits current flow.
120/240 V In-Phase or Out-of-Phase
Просмотров 163 тыс.2 года назад
Explanation of the phase relationship between the two transformer secondary windings, or two halves of the winding, feeding a 120/240 V Single-Phase system.
Feeder Taps, 240.21(B)
Просмотров 37 тыс.2 года назад
Explanation of Feeder Tap rules and concepts found in 240.21(B).
Overcurrent, Overload, Short Circuit, and Ground Fault
Просмотров 813 тыс.2 года назад
Explanation of definitions and concepts for the various types of "Overcurrents" ("Overload", "Short Circuit", and "Ground Fault").
Open Neutral
Просмотров 819 тыс.2 года назад
Demonstration and explanation of the effects of an "open neutral."
310.15(E) Neutral Conductor
Просмотров 67 тыс.2 года назад
Explanation of when and why we count a neutral as a current carrying conductor for the purpose of derating (ampacity adjustment).
310.15(B) Temperature Correction Factors
Просмотров 34 тыс.2 года назад
Explanation of 310.15(B): How and why to use ambient temperature correction factors to determine conductors' new ampacities in hot or cold environments.
310.15(C) Ampacity Adjustment Factors
Просмотров 40 тыс.2 года назад
Explanation of 310.15(C): How and why we adjust ampacities when we have more than three current carrying conductors sharing a raceway or cable.
240.4(B) - The "Round-Up" Rule
Просмотров 14 тыс.2 года назад
Explanation to help in understanding NEC 240.4(B) "The Round-Up Rule" for conductor protection, in which I also reference T-310.16, 240.4(D), and T-240.6(A) from the 2020 NEC.
240.4 & T-310.16 Conductor Protection and Ampacity
Просмотров 42 тыс.2 года назад
Understanding Conductor Protection (240.4) and how to use the most common Ampacity Table in the NEC (T-310.16). I also look at several Code sections that relate directly to T-310.16 and consider Insulation Ratings. [All Code Sections from 2020 NEC]
Comparing Series and Parallel RLC Circuits
Просмотров 25 тыс.3 года назад
A comparison of Series and Parallel RLC Circuit Reactances, Currents, and Vectors at varying frequencies.
Frequency Changes in LC Circuits
Просмотров 5 тыс.3 года назад
Frequency Changes in LC Circuits
Analysis of LC Circuits
Просмотров 7 тыс.3 года назад
Analysis of LC Circuits
Introduction to LC Circuits
Просмотров 12 тыс.3 года назад
Introduction to LC Circuits
Transformer OCPD - Pri. & Sec. Protection, Table 450.3(B)
Просмотров 36 тыс.3 года назад
Transformer OCPD - Pri. & Sec. Protection, Table 450.3(B)
Transformer OCPD - Primary-Only Protection, Table 450.3(B)
Просмотров 14 тыс.3 года назад
Transformer OCPD - Primary-Only Protection, Table 450.3(B)
Transformer Primary Conductors
Просмотров 16 тыс.3 года назад
Transformer Primary Conductors
Transformer Secondary Conductors - NEC 240.4(F) & 240.21(C)(1)
Просмотров 15 тыс.3 года назад
Transformer Secondary Conductors - NEC 240.4(F) & 240.21(C)(1)
Buck-Boost Transformer
Просмотров 85 тыс.3 года назад
Buck-Boost Transformer
Reactors and Isolation Transformers
Просмотров 37 тыс.3 года назад
Reactors and Isolation Transformers
Parallel RLC, Effect of Changes in Frequency
Просмотров 6 тыс.3 года назад
Parallel RLC, Effect of Changes in Frequency
Parallel RLC Power & Angle Theta
Просмотров 9 тыс.3 года назад
Parallel RLC Power & Angle Theta
Parallel RLC Amps & Ohms
Просмотров 15 тыс.3 года назад
Parallel RLC Amps & Ohms
Series RLC, Effect of Changes in Frequency
Просмотров 7 тыс.3 года назад
Series RLC, Effect of Changes in Frequency
Series RLC Power
Просмотров 9 тыс.3 года назад
Series RLC Power
Series RLC, Ohms, Amps, & Volts
Просмотров 24 тыс.3 года назад
Series RLC, Ohms, Amps, & Volts

Комментарии

  • @abdulbasith6948
    @abdulbasith6948 22 часа назад

    🎉

  • @abdulbasith6948
    @abdulbasith6948 День назад

  • @user-ks1bl9nb3p
    @user-ks1bl9nb3p 3 дня назад

    you are an amazing individual !! thank you for such a refresher

  • @m.irzath964
    @m.irzath964 3 дня назад

    great explanation sir thanks a lot from India

  • @RakeshShah-cx7ep
    @RakeshShah-cx7ep 5 дней назад

    Gujarati translation helping

  • @heyasimii9170
    @heyasimii9170 5 дней назад

    Hope you're doing well Dave, your vids are amazing. please do more electrical content !

  • @davidsembiante7348
    @davidsembiante7348 5 дней назад

    Great explanation! Just what I was looking for. Thank you!

  • @bohmardorinengoinsah7472
    @bohmardorinengoinsah7472 6 дней назад

    Hi good morning sir This is Mardorine writing from Cameroon. My question is if the value of the inductor or that of the active reactance was not given. How then will the inductance be calculated ? Given that the angle has been provided ?

  • @williamhoughton2945
    @williamhoughton2945 8 дней назад

    Dave, I had to watch your video several times to be sure I was hearing right. Your explanation of the secondary is good but the primary is backward. To decrease the secondary voltage, you have to add turns to the primary. Tapping the primary will raise the secondary voltage. If you tapped the primary down to the same number of turns there are in the secondary, it would be a one-to-one transformer and the output would be 120v. Your formula says it all: to decrease EsubS you have to increase NsuP.

  • @davidhamilton2708
    @davidhamilton2708 8 дней назад

    I thoroughly appreciated your lecture, but to make it crystal clear you need to another board or more slides. Very informative and for that i appreciate you .

  • @JohnAndrewMetza
    @JohnAndrewMetza 9 дней назад

    Great VID, thanks for taking the time.

  • @uiticus
    @uiticus 9 дней назад

    In the delta transformer, only A to B windings are directly connected to the line voltage of 480 volts. The B to c and A to B windings are connected to the line voltage of 480 volts through a line winding in series with it.

  • @melalbano6351
    @melalbano6351 10 дней назад

    Thank yuo Professor Dave.

  • @AzeveidoMateus
    @AzeveidoMateus 11 дней назад

    This is the best explanation of feeder taps anywhere on the internet. Thank you so much for this video.

  • @brcars476
    @brcars476 11 дней назад

    Great work from you Sir

  • @abumalikmallouhi2036
    @abumalikmallouhi2036 12 дней назад

    Great explaination.....Thanks 🙏

  • @jasonpierce3968
    @jasonpierce3968 12 дней назад

    I think this was the best explanation of this material I have ever seen.

  • @elc2k385
    @elc2k385 13 дней назад

    There is no way a textbook could teach as wellas these RUclips videos. Great job, invaluable resource toall AC theory students.

  • @SB-dc9qb
    @SB-dc9qb 13 дней назад

    Dave, where you at? More knowledge please sir.

  • @AdityaTheWatcher
    @AdityaTheWatcher 14 дней назад

    Very precise explanation

  • @S25plus
    @S25plus 14 дней назад

    Wow, thanks professor Dave! That is how we learn.

  • @broderickcamel1701
    @broderickcamel1701 14 дней назад

    out...fricking...standing demonstration and explanation

  • @nolanjanke6475
    @nolanjanke6475 15 дней назад

    Great job explaining! you hit important points without talking about unrelated things or rambling. Also very engaging energy!

  • @hp2yn
    @hp2yn 16 дней назад

    why 2.5 time for primary current??? Not understood

  • @mikeadler434
    @mikeadler434 17 дней назад

    👍👍

  • @MarbleDove-1984
    @MarbleDove-1984 18 дней назад

    You are a very fun teacher and a good one at that. Thank you Dave.

  • @nobrizzle
    @nobrizzle 18 дней назад

    GREAT VIDEO. Just up to the 3:25 mark made so much more sense to me to explain this. I'm having neutral issues in my house so I've been told.

  • @parvezsatter5140
    @parvezsatter5140 18 дней назад

    Excellent video, thank you so much!

  • @bigumaernest9558
    @bigumaernest9558 19 дней назад

    Nice lecture

  • @sembulingambalachandran2426
    @sembulingambalachandran2426 19 дней назад

    Thank you sir

  • @drjae599
    @drjae599 20 дней назад

    The way you explain the theory and break down the circuit for each component is very helpful, thank you

  • @keerthikumara6987
    @keerthikumara6987 21 день назад

    EXCELLENT TEACHING WAY SIR

  • @mylifehardcore3759
    @mylifehardcore3759 21 день назад

    I will be very greatfull if i get answer to this question: can be ground fault if nutral of transformer isolated

  • @PITHIOU
    @PITHIOU 22 дня назад

    Thank you Dave I really appreciated you describe this in phase and out of phase it was excellent

  • @TriPham-yo7we
    @TriPham-yo7we 22 дня назад

    DC difference from AC

  • @macariousbwanga3470
    @macariousbwanga3470 22 дня назад

    This man is really good he knows how to explain.He is a master keep it up

  • @isaacstone7899
    @isaacstone7899 22 дня назад

    Great video and idea to learn electric voltage.

  • @aronking2781
    @aronking2781 23 дня назад

    How can we know each faults in measurment method?

  • @jerseyjeeper1575
    @jerseyjeeper1575 23 дня назад

    Great job Dave!

  • @ramonqo1
    @ramonqo1 24 дня назад

    Excellent explanation.........

  • @Mr.Catnip_Pawbreakers
    @Mr.Catnip_Pawbreakers 25 дней назад

    Just made me think about clockwise vs counterclockwise windings....which I assume is the controlling factor in the arrows?

  • @AuAgPdPtRh
    @AuAgPdPtRh 25 дней назад

    Under what circumstances would we choose primary-only protection versus primary and secondary protection, or is it simply a matter of preference?

  • @oldolfmann8927
    @oldolfmann8927 25 дней назад

    Yes, you do explain well, but your demeanor is that you are talking down to preschool children. I keep waiting for you to say "today boys and girls" or for you to look into the camera and say "I see Billy and Susan, and Tommy, etc...

  • @krodmiller
    @krodmiller 26 дней назад

    " I gotta unplug it quickly cause my circuit isn't really rated for that" 😂

  • @jimmykelley883
    @jimmykelley883 26 дней назад

    Well done!

  • @notiskatsikos3983
    @notiskatsikos3983 26 дней назад

    Nice video!

  • @jimmykelley883
    @jimmykelley883 27 дней назад

    Well done!!!

  • @gooyi3123
    @gooyi3123 27 дней назад

    Thank you, finally made sense, thank you Jesus

  • @surendrakverma555
    @surendrakverma555 28 дней назад

    Very good. Thanks 🙏

  • @mrindependent1
    @mrindependent1 29 дней назад

    Derate, not restrict Terminology matters