쉐도잉 연습: The Difference Between Contactors And Relays - ELECTROMAGNETIC SWITCHES electricians use - 영상으로 영어 말하기 배우기

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What's going on my friends?

This is Dustin Stelzer with Electrician U and today we're going to talk about the difference between a relay and a contactor. so relays

and contactors are pretty much the same thing i mean they

essentially work the same way both of them are electromagnetic switches

so rather than you having to come up

and push to turn this device on you know like manually

you can actually send current to it send an electrical signal

and that is what turns the thing on it does

that for both of these both of them are electromagnetic switches

both of them are really used as like multi -pole switches

so if you want to control several different circuits

or several different loads that are on different circuits at the same time you can do

that with both of these whereas a normal light switch you

can only control one thing both of them have coils

so there's actually a coil of wire in here that

when you send current through it engages an electromagnet

and it sucks the contacts shut or opens them up they both operate

that way and both of them have contacts

so they have multiple different contacts

that you can run say home runs from a panel to

and then you run out of the other contacts out to

the field somewhere to different kinds of things relays also have them so even though

that they're very similar in a lot of ways they're very

different in some important ways typically a relay is going to be a low voltage

or low current application meaning that the both the coil

and the contacts really can't handle a lot of current a lot of these things are rated at like 5 amps,

10 amps, 15 amps, where contactors are typically used in higher voltage, higher current environments.

The contacts on these can handle anywhere from 30, 40, 50 amps.

The metal and the pieces that make up the inside of this relay are actually a lot smaller and more compact,

whereas a contactor, everything is a lot more beefy.

Typically with relays, you cannot change the coils inside of them.

Whatever rating you get this device is the rating you got to run to it and through it.

Whereas a lot of contactors, not all of them, but a lot of them, you can actually take this coil pack out and put a brand new coil in it.

So if you have 120 volt coil but you need a 277 coil, a lot of times you can just go to the supply house, pull this out, put a new one in.

Another difference is that relays can typically only control up to like two

or three loads they're just designed for a couple of different

functions whereas contactors this one specifically can do four loads

and there's some even like this crazy one back here that's a six pole

and it can even be expanded to do eight

or this guy up here can do 12

so they're a lot more expansive most relays also have a both a normally open

and a normally closed option so you can kind of turn some things off

while turning other things on at the same time with a relay where most general use contactors you can't do

that general use contactors are typically only normally open or normally closed

so everything is going to turn on or everything is going to turn off

when you energize that coil however lighting contactors like again this guy

or this guy you can change you can add auxiliaries to them you can kind of move back and forth

whether or not some of them are normally open

and some of them are normally closed

so they have a little bit more high functionality

but again it's kind of the same thing it's just limited to usually two

or three things or anywhere from like two to twelve in

that case another thing

that some contactors have again lighting contactors more specifically is they have the ability to be mechanically held

so you can latch them in place and that way

if power is gone

or you lose power to the coil all the lights fail in an on position where relays don't have

that function basically once you send power to them

and you take power away they turn on or they turn off like a general purpose contactor would.

So that's pretty much it for the differences between contactors and relays.

I hope that kind of cleared some things up.

A lot of people when they hear relay they're like uh what is that it's some like magical switch.

No it's the same thing.

They're both just electromagnetic switches.

You send power to them to turn them on and off

and that's as as difficult as it gets

so i'm going to have a video that's going to come out uh specifically on relays

that just talks about how all relays work

and i'm going to cover a bunch of different types i'm going to have another video

that just covers contactors how they work i'm going to tear them open

so you can see the insides of them talk about different environments in which you use them

and then i'm also going to do a video on both

of these where i'm going to wire each one of them

and draw some diagrams and show you how they work

and how the practical application of both of these works out

so in the next couple of months you're going to see a few different videos on contactors

and relays so thank you guys so much i really appreciate your attention

and i will see you in the next episode

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이 레슨의 어휘와 말하기 포인트

이 말하기 레슨은 영상 “The Difference Between Contactors And Relays - ELECTROMAGNETIC SWITCHES electricians use”을(를) 바탕으로 합니다. 가장 자주 반복되는 단어는 다음과 같습니다: contactor, relay, coil, normally, contact. 이 영상에는 섀도잉할 문장 6개와 단어 952개가 있습니다. 말하는 구간의 길이는 5:17입니다. 화자는 분당 약 180단어로 빠르게 말하므로 연음과 약하게 발음되는 소리가 많습니다. 단어의 84%가 영어에서 가장 많이 쓰이는 3,000단어에 속합니다. 나머지는 연습 전에 미리 확인해 두세요.

이 영상의 핵심 어휘

영상에 나오는 익혀 둘 만한 단어 15개를 발음, 뜻과 함께 정리했습니다.

단어	발음	뜻
rat 명사	/ɹæt/	쥐
electromagnetic 형용사	/ɪˌlɛk.tɹoʊ.mæɡˈnɛ.tɪk/	전자기의
wire 명사	/ˈwaɪɚ/	철사
voltage 명사	/ˈvəʊltɪd͡ʒ/	전압
practical 형용사	/ˈpɹæk.tɪ.kəl/	실질적인
suck 동사	/sʌk/	빨다
expand 동사	/ɪkˈspænd/	펴다, 피다
tear 동사	/tɛɹ/	찢다
pole 명사	/pəʊl/	극
magical 형용사	/ˈmæd͡ʒ.ɪ.kəl/	마법의
diagram 명사	/ˈdaɪ.ə.ɡɹæm/	다이어그램, 도표
auxiliary 형용사	/ɔɡˈzɪl.(jə).ɹi/	보조
functionality 명사		기능
electromagnet 명사		전자석
latch 명사	/læt͡ʃ/	걸쇠

영상에 나오는 구동사

단어	발음	뜻
turn off 동사		끄다, 턴오프하다
come out 동사	/ˌkʌm ˈaʊt/	나오다
come up 동사		올라오다

주의할 발음

화자는 gonna, I'm, they're 같은 축약형과 약화된 형태를 23번 사용합니다. 들리는 대로 짧게 발음하세요.

긴 단어 — 강세 위치에 주의: electromagnetic /ɪˌlɛk.tɹoʊ.mæɡˈnɛ.tɪk/, electrical /ɪˈlɛktɹɪkəl/, essentially /ɪˈsɛnʃəli/, auxiliary /ɔɡˈzɪl.(jə).ɹi/, manually /ˈmænj(u)əliː/

한국어 화자가 어려워하는 소리:

/v/ — ㅂ(/b/)과 구별하기: voltage /ˈvəʊltɪd͡ʒ/, twelve /twɛlv/, expansive /ɪkˈspænsɪv/, volt /vəʊlt/
/z/ — ㅈ이 아니라 성대를 울리는 /s/: whereas /(h)wɛɹˈæz/, auxiliary /ɔɡˈzɪl.(jə).ɹi/, energize /ˈɛnəd͡ʒaɪz/
/r/과 /l/ 구별하기: relay /ˈɹiːleɪ/, electromagnetic /ɪˌlɛk.tɹoʊ.mæɡˈnɛ.tɪk/, practical /ˈpɹæk.tɪ.kəl/, electrical /ɪˈlɛktɹɪkəl/, auxiliary /ɔɡˈzɪl.(jə).ɹi/

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먼저 말하지 않고 영상을 끝까지 듣고 모르는 단어를 적어 둡니다.
0.75배속으로 한 문장씩 섀도잉을 시작하고, 익숙해지면 보통 속도로 돌아갑니다.
자신의 목소리를 녹음해 원본과 비교하고, rat, electromagnetic, wire 같은 단어에 특히 주의합니다.

쉐도잉이란? 영어 실력을 빠르게 키우는 과학적 방법

쉐도잉(Shadowing)은 원래 전문 통역사 훈련을 위해 개발된 언어 학습 기법으로, 다언어 학자인 Dr. Alexander Arguelles에 의해 대중화된 방법입니다. 핵심 원리는 간단하지만 매우 강력합니다: 원어민의 영어를 들으면서 1~2초의 짧은 지연으로 즉시 소리 내어 따라 말하는 것——마치 '그림자(shadow)'처럼 화자를 따라가는 것입니다. 문법 공부나 수동적인 청취와 달리, 쉐도잉은 뇌와 입 근육이 동시에 실시간으로 영어를 처리하고 재현하도록 훈련합니다. 연구에 따르면 이 방법은 발음 정확도, 억양, 리듬, 연음, 청취력, 말하기 유창성을 크게 향상시킵니다. IELTS 스피킹 준비와 자연스러운 영어 소통을 원하는 분들에게 특히 효과적입니다.

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쉐도잉 연습: The Difference Between Contactors And Relays - ELECTROMAGNETIC SWITCHES electricians use - 영상으로 영어 말하기 배우기

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