Should 3-phase or 1-phase residual current circuit breakers be used for single-phase circuits? What are the differences in the event of an interruption of the neutral wire N?
A topic that often appears on various groups and forums - there are many doubts, but also a lot of incorrect information. Therefore, I will try to explain it - from the basics - I will show why and in what cases phase-to-phase voltage can lead to damage to receivers, when such a threat appears in the case of single-phase and three-phase differentials.
I will try to discuss the topic comprehensively - from the basics, in simple language. So there will also be Ohm's and Kirchhoff's law, and diagrams. How will the voltages be distributed and where will the current flow?
There will also be many simplifications - to better show the differences.
0:00 Introduction
0:38 1-phase vs. 3-phase installation
1:09 3-phase RCD
2:08 Phase and interphase voltages
2:49 N interruption at a 3-phase residual current circuit breaker
3:51 Voltages in case of N interruption
3:58 Current flow and meshes
5:21 Symmetry and asymmetry - examples and calculations
8:56 1-phase RCD in a 3-phase installation
9:51 Meshes and tension distribution
11:18 Differences and summary
#science
See also:
RCD 1F vs 3F and Interrupted Neutral N. Consequences. From scratch. • Czy RCD 1-fazowy zamia...
Thin-walled ferrules in practice - how, how and why to crimp ferrules on wires. • Jak stosować tulejki c...
Damaged, drilled wires? How to connect. Bushings and soldering • Przewiercony., uszkodz...
Functional and safe switchgear - Design in a free program and labels • Tak projektuję rozdzie...
START STOP. How to do it - button control from scratch • START STOP silnika 2 p...
RCD - Residual current circuit breaker - for beginners and more • RCD - Czułość 30mA, 30...
Circuit breakers, fuses, ES - for beginners and more • Bezpieczniki - esy, ko...
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 others. COMPENDIUM
CONNECTING damaged, drilled WIRES - ferrules and soldering
__________________________________________________________
🔔 Subscribe 🔔
👉 / @elektrotechnika-krakow
__________________________________________________________
I invite you to:
👉 www.naprawa-laptopa.com.pl - over 100 articles about laptop and electronics repairs!
👉 www.smarthomekr.pl - website about electricity and home automation.
Негізгі бет Ғылым және технология RCD 1F vs 3F and Interrupted neutral N - burned, damaged. Consequences. From scratch.
Пікірлер: 101