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TechTranscript
00:00bismillahirrahmanirrahim welcome to my channel engineering technical program series today i am
00:16going to discuss a most valuable electronic components which i have found very helpful
00:24in switching electrical circuits in last lesson you have seen how a coil and iron core becomes
00:38magnet and pulls iron object towards its center this magnetic behavior is utilized here
00:48i have arranged three pieces of magnetic conductors here one is this big one
01:02there are more bigger than this one this is the medium or you say a small one here
01:11they are smaller than this magnet contractor also and this magnetic contractor i have
01:24kept it open to show you its internal components okay
01:36i am going to open
01:41this magnetic conductor
01:49this is its cover cover upper cover okay
02:00this is the upper core with spring this spring keeps it upward when the current is not here
02:10it keeps it upward with this upper core these are fiber or plastic
02:20and here you see four pins you are seeing
02:24this is the contact pin this is the contact pin one side of this contact is is on the left side and others on the flat side okay
02:40it keeps it upward when the current is on the right side of this contact pins
02:44this contact pins
02:50are like this one
02:57however
02:58this is magnet coil this is magnet coil this is magnet coil 220 which is 220 transformer
03:14this is its inner core okay
03:18and progress связи II is 1stuna and one side of this contact pins
03:21between layer 2 times and we see here
03:22we see here
03:232 foremost delta worth of stick is 9thun Vocês connect
03:25with the 15 sorry 3 meanwhile
03:25magari hierarchy where monitor are with a & være
03:302 part time is były but there is no!!!
03:315th unison bonded unit nehmen
03:313 to help me 500 conjun Pr depos contar mians Beer then
03:45Okay, then I shall keep it as it was and enclosing that uppercase, enclose it.
04:15I have made connections to coils point which is here and it is here, but in other transformers
04:38you will see the connection point on different places.
04:42You have to check it by multimeter and find where it is located.
04:48As for example, here, here you do not see any connection point, but where it is, yes, it is
05:00integrated A1 and A2, this one A and this one, these two is the connection point of coil connection
05:18point, okay, here it is, it is there, I am not going to tighten it, just I want to show you,
05:42when I make the connection on, it will advance pull, yeah, you have seen that the plant magnet,
05:56both coil has been closed, okay, okay, you may want to see this pulling.
06:20heart is pulling, half, okay,
06:45You may think, what is the function of magnetic contactors and why it is used.
06:59Its function is like an electrical switch.
07:03You have seen so many switches, which we all know what the switch does.
07:11One terminal of a switch is connected to any AC line and the other one is connected to our
07:19bulb fan or small appliances.
07:23This is very small switch. However, one plate is now is in position, it is off, so it is in open
07:37position, but when we press it, this one, this switch contacts both the pins and the connection is made.
07:45But have you ever guessed, how big load of heavy motor or heater is making on and off?
07:59Is there any big switch, which can be used by hand?
08:05Moreover, sometime, it will require to off or on a circuit of a heavy motor within minutes.
08:15We were then to appoint a switch man with a stopwatch and ask him to close the circuit after each 5 minutes and again to reopen it after 30 seconds.
08:33Is it possible? Not possible at all.
08:37But magnetic contactor is doing the job efficiently and electrical timers are controlling the time.
08:45Understand?
08:49Now, it is necessary to know the functional capacity of any magnetic contactor.
08:59Now, these are all 220.
09:03That is 220 means its coil is 220.
09:06As you see here, this is 230 volts, 50 hertz, 50-60 hertz.
09:13That is, you can put 220 line in this magnetic contactor.
09:21And, you see, this smaller one is 220, but it is not written here.
09:28However, it is written somewhere here.
09:31It is also 220.
09:33And the big one, which I have opened, is also 220.
09:39Its coil is also 220.
09:42Yeah.
09:43220, 230 volts.
09:44Yeah.
09:45220, 230 volts.
09:46Okay.
09:47But, the main important thing you have to know is you must see its functional capacity.
10:05That is, that is voltage, you have learned voltage is written here.
10:11Here, it is written on this number plate.
10:14Okay.
10:15But, you have to know how much amps it is.
10:20It is very small.
10:27Somewhere it is written 20 amps.
10:30It is written 20 amps.
10:32Okay.
10:33Yeah.
10:34820 amps.
10:35This is, this was, was, was, was, was 10 amps.
10:45Okay.
10:46What does it mean, 10 amps, 20 amps, 30 amps, what is known?
10:55It means, that this magnetic contactor can hold 20 amps of load.
11:06This one can hold only 10 amps of load.
11:10But, you are not to give 20 amps.
11:13In my suggestion, I suggest you to give not more than 15 to 16 amps of load in this magnetic
11:24contactor.
11:25And here, 7 to 8 amps.
11:29It's sufficient.
11:30So, it will run very long.
11:35If you give big load, the, either the coil may burn sometime.
11:42Or, that happens.
11:47Other, many contractors are known as 110, 110, 450 volt DC.
11:58What does it mean, 1 by 110?
12:03You see, you see, that construction of 110 from magnetic contactor will be the same.
12:13This only change, changes is in its coil.
12:18That is, if it is 110, it should be 110 coil.
12:24There is coil inside, which I have shown you.
12:27That is the problem with coil.
12:30And if it is 440, then it will be 440 AC coil.
12:34And in some magnetic contactor, if it is DC, it will be written DC.
12:39How many volts?
12:41Okay?
12:42One thing you must know, that in 440, in 440, we normally we know that there are 3 phases.
12:55And so, we call it 440.
12:58But, when you are going to make connection here, on these 2 points, on these 2 points of coil, you should connect only 2 phase.
13:13Not 3 phase, 2 phase.
13:152 pin, that is 2 phase.
13:17Okay?
13:18The coil should be made only 2 phase.
13:28The most important function of a magnetic contactor is its NO and NC connections.
13:38As you see here.
13:39As you see here.
13:40As you see here.
13:41As you see here.
13:42As you see here.
13:43NO.
13:44NO.
13:45Front.
13:46NO.
13:47NC.
13:48That is NC.
13:49NC.
13:50NC.
13:51NO.
13:52NO.
13:53That is.
13:54That is.
13:55It has.
13:56It has.
13:572 NO.
13:58And 2 NC.
13:59The NO and NC.
14:00I have.
14:01Very clearly.
14:02Told you.
14:03In my last lesson.
14:05What is in transform lesson.
14:07However.
14:08This strand.
14:09NO strand.
14:10That is.
14:11Normally.
14:12Off.
14:13That is.
14:14If current is not here.
14:16It is off.
14:19And NC means.
14:21Here you see.
14:24I have.
14:26Used some.
14:29Bulbs.
14:30This was.
14:33This is.
14:35The.
14:36The.
14:37NC.
14:38Yeah.
14:39NC.
14:40This is the NC point.
14:42And.
14:44It is the NO point.
14:46Okay.
14:47What is.
14:48Means.
14:49When I shall give current.
14:51It will be.
14:53ON.
14:54On.
14:55You see.
14:56I have given current.
14:57Current is coming to.
14:58To this.
14:59Magnetic contactor.
15:00But.
15:01It is.
15:02The.
15:03Bulb is connected.
15:04Because.
15:05It is.
15:06NC.
15:07Point.
15:08OK.
15:09But.
15:10When.
15:11When.
15:12I give.
15:13Line.
15:14To.
15:15Magnetic contactor.
15:16It will.
15:17This.
15:18This.
15:19This.
15:20Will be.
15:21Off.
15:22This.
15:23This.
15:24Will be.
15:25Off.
15:26For.
15:27A better view of light.
15:28I have.
15:29Close.
15:30The.
15:31Flashlight.
15:32Now.
15:33You see.
15:34I will.
15:35Can I give.
15:36Line.
15:37To.
15:38Manitric.
15:39Contactor.
15:40It will.
15:41This.
15:42This.
15:43This.
15:44Will be.
15:45Off.
15:46This.
15:47This.
15:48Will be.
15:49Off.
15:50This.
15:51Maybe.
15:52Will be.
15:53Off.
15:54For.
15:55A better view of light.
15:56Let's say.
15:57In.
15:58NC.
15:59It is.
16:00Giving.
16:01You.
16:02Red light.
16:03That is.
16:04NC.
16:05Normally.
16:06Connected line.
16:07Now.
16:08I am giving.
16:09Line.
16:10To.
16:11Magnetic.
16:12Conductor.
16:13Coil.
16:14I am giving.
16:15Line.
16:16To.
16:17Magnetic.
16:18Conductor.
16:19Coil.
16:20Yeah.
16:21Now.
16:22What.
16:23You have.
16:24Seen.
16:25And.
16:26That.
16:27Is.
16:28N.
16:29Point.
16:30Is.
16:31Now.
16:32On.
16:33And.
16:34NC.
16:35Point.
16:36Is.
16:37Off.
16:38You.
16:39Again.
16:40See.
16:41Yeah.
16:42This.
16:43Red.
16:44Light.
16:45Is.
16:46On.
16:47Yellow.
16:48Is.
16:49Off.
16:50As.
16:51Soon.
16:52As.
16:53Venture.
16:54Conductor.
16:55Pulls.
16:56Its.
16:57Score.
16:58It.
16:59Is.
17:00Going.
17:01To.
17:02Be.
17:03Red.
17:04Light.
17:05Is.
17:06Going.
17:07To.
17:08These.
17:09NC.
17:10And.
17:11NO.
17:12Connection.
17:13Is.
17:14Very.
17:15Important.
17:16And.
17:17Most.
17:18Often.
17:19You.
17:20Will.
17:21Require.
17:22Only.
17:23No.
17:24Line.
17:25In.
17:26Most.
17:27Of.
17:28The.
17:29Circuits.
17:30Especially.
17:31Particularly.
17:32In.
17:33Machines.
17:34Where.
17:35Automatic.
17:36Is.
17:37Required.
17:38Then.
17:39You.
17:40Will.
17:41Use.
17:42This.
17:43Type.
17:44Of.
17:45Contractor.
17:46With.
17:47NO.
17:48NC.
17:49Okay.
17:50Now.
17:51It.
17:52Is.
17:53Clear.
17:54That.
17:55This.
17:56NC.
17:57And.
17:58NO.
17:59Clear.
18:00Now.
18:01I.
18:02Will.
18:03Say.
18:04Um.
18:05Ach.
18:06Giving.
18:07Excess.
18:08Load.
18:09To.
18:10Its.
18:11Related.
18:12Capacity.
18:13Or.
18:14Supply.
18:15Voltage.
18:16For.
18:17Example.
18:18Supply.
18:19Voltage.
18:20Is.
18:21220.
18:22And.
18:23If.
18:24You.
18:25Are.
18:26Giving.
18:27300.
18:28Volt.
18:29Then.
18:30Actually.
18:31Normally.
18:32The.
18:33Coil.
18:34Putting.
18:35Load.
18:36Of.
18:3730.
18:38Amps.
18:39Then.
18:40The.
18:41It.
18:42Will.
18:43Be.
18:44A.
18:45Load.
18:46On.
18:47The.
18:48Coil.
18:49And.
18:50It.
18:51May.
18:52Burn.
18:53So.
18:54To.
18:55Avoid.
18:56This.
18:57You.
18:58Now.
18:59Sometimes.
19:00If.
19:01The.
19:02Mindy.
19:03Conducteur.
19:04Is.
19:05Lying.
19:06Idle.
19:07For.
19:08Many.
19:09Time.
19:10Or.
19:11The.
19:12Weather.
19:13Is.
19:14Humid.
19:15Like.
19:16Hours.
19:17In.
19:18Our.
19:19Country.
19:20You.
19:21You.
19:22Will.
19:23Listen.
19:24Some.
19:25Under.
19:26Desirable.
19:27Sound.
19:28Is.
19:29Coming.
19:30From.
19:31Inside.
19:32The.
19:33Maintain.
19:34And.
19:35How.
19:36You.
19:37Should.
19:38Made.
19:39It.
19:40Correct.
19:41You.
19:42See.
19:43After.
19:44Lying.
19:45Adel.
19:46Sometime.
19:47A.
19:48Rust.
19:49Will.
19:50Be.
19:51Accumulated.
19:52On.
19:53These.
19:54Points.
19:55Of.
19:56Core.
19:57Because.
19:58It.
19:59Is.
20:00Accumulated.
20:01Here.
20:02The.
20:03Coil.
20:04Is.
20:05Can.
20:06Not.
20:07Fix.
20:08Permanently.
20:10And.
20:11There.
20:12Is.
20:13Making.
20:14A. Gap.
20:15Is.
20:16Between.
20:17These.
20:18Two.
20:19Cores.
20:20So.
20:21Sound.
20:22Will.
20:23Be.
20:24Coming.
20:25You.
20:26Just.
20:27Remove.
20:28The.
20:29Dust.
20:30And.
20:31Is.
20:32More.
20:33Thick.
20:34You.
20:35Use.
20:36Sand.
20:37Lightly.
20:38And.
20:39You.
20:40Just.
20:41Sand.
20:42These.
20:43Two.
20:44These.
20:45Three.
20:46Pin.
20:47Point.
20:48Of.
20:49Upper.
20:50Core.
20:51And.
20:52That.
20:53The.
20:54Sound.
20:55Will.
20:56Stop.
20:57It.
20:58Will.
20:59That.
21:00Everything.
21:01Is.
21:02Okay.
21:03Many.
21:04Conduct.
21:05Coil.
21:06Is.
21:07Okay.
21:08But.
21:09You.
21:10Are.
21:11Not.
21:12Getting.
21:13The.
21:14Connection.
21:15Of.
21:16Any.
21:17Pin.
21:18Or.
21:19Two.
21:20Or.
21:21Three.
21:22You.
21:24Will.
21:25Take.
21:26Out.
21:27This.
21:28Pin.
21:29Just.
21:30Open.
21:31The.
21:32Magnetic.
21:33Contactor.
21:34Take.
21:35Out.
21:36Pins.
21:37From.
21:38Here.
21:39These.
21:40Points.
21:41Cut.
21:42Siob console.
21:43apresent.
21:44crushed.
21:45Let's.
21:47Yellow.
21:48Like.
21:49First.
21:50고요.
21:51倒ic body.
21:52One.
21:53Let's.
21:54table.
21:55And.
21:56樹.
21:57Dust.
21:58долis.
21:59Harmma.
22:00Carbon.
22:01Ground.
22:02loyd.
22:03Formates.
22:04Carbonre.
22:05May come or.
22:07어떻게.
22:08来了 detergent may come.
22:09you just simply open it and clean the points, these points are small points, as you see I am not going, I can't,
22:27these are the points, okay, here, and these contact points, you just
22:35rinse it on a paper, on a paper, and try to fit it, if it is okay, then you should use, otherwise you discard it
22:51in machine, I never use second-hand contractor, I always use new one, when
23:08manufacturers, it is, it is telemechanical, of France, and
23:23this, I don't know,
23:25country of origin, is not mentioned here, however, the sellers say, it is, oh, oh, I bought it, it is French made, French,
23:48yes, I cannot show you, what is the legend, France, yeah, is French made, is, both, both are French made,
24:09okay, now Chinese
24:13conductors are in the market also, anyhow, this was my lesson
24:22and I think
24:25I have tried my best to show you in this video, although it normally it takes a lot of time,
24:35but to make short the video, I am not going in much detail, however, I think you have
24:47learned it, and if you have any problem in
24:51learning more, you are welcome to address me, by this time, by now, have you, I want to know,
25:06that, have you subscribed my, this program, or this channel, I shall like, that you should share it,
25:18to your mind, persons, so they may also get some knowledge,
25:25others, and I shall be pleased, if you mention, from which country, you are reviewing, my lessons,
25:37thanking you, and welcome to my next lesson, that is Relay.
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