Рет қаралды 2,712
Overcurrent protection - also called fuses, plugs, S-S, overcurrent circuit breakers.
What are they for, how are they built, how do they work, how to read characteristics, how to choose - from the basics for beginners and more.
There will also be talk about the selectivity of these safeguards.
The video is intended for beginners, so there will be some simplifications and some, in my opinion, most important issues regarding overcurrent protection will be discussed.
I also recommend a video about short-circuit loop impedance: • IPZ Impedancja Pętli Z...
0:00 Introduction
0:24 Application
0:59 Overcurrent - short circuits and overloads - what are the differences?
1:38 Construction - short-circuit and overload element
2:25 Time-current characteristics
2:38 Guaranteed non-shutdown and guaranteed shutdown
2:43 Markings - nominal current, characteristics
4:05 Overload element
5:15 Short-circuit element
5:25 quick shutdown
5:54 B, C, D comparison
6:00 Selection of overcurrent protection
6:18 Long-term current withstand
6:56 Quick power off
8:00 Selectivity
8:44 Notes
9:13 Summary
Circuit breakers, ES, fuses - in theory and practice - for beginners and more. I invite you to watch.
#overcurrent, #beginners, #electrics #electronics #stepbystep #fuse #safety #science
see also:
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Short Circuit Loop Impedance from scratch. What is it, how to measure and interpret it. For beginners. • IPZ Impedancja Pętli Z...
✅ Waveforms, TruRMS, PWM, duty cycle %. For beginners and more
✅ CONTROL with START STOP buttons, impulse, on contactors or relays
✅ Measurement errors for electronics beginners and others - when? How? What for? useful patterns
✅ MULTIMETERS, meters in practice - for beginner electronics and more. COMPENDIUM
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