Summer vlog action Go!
Wednesday, 6 July 2011
Sunday, 19 June 2011
How to find out the Full load current [Relation between horse power and kilo watt] and how to select a proper cable [Power cable size selection chart]
In previous posts i have explained about electrical drawings, electrical panel component etc.. For smooth working of motor which is connected to the mcc panel, cable size selection has an important role. We have to consider lot of things for selecting a proper cable, like motor rating (Kilowatt,Horse power),Voltage(230v, 415 v etc.),Phase(Single, 3 phase),Temperature, Distance between motor and mcc.
2.Inside cables – Motor circuit cable rating.
Motor full load current * 0.7
Now you will be having a doubt how to find out the full load current of a motor?
Formula for finding full load current of a motor.
3 phase:
Full load current=(746*hp)/(1.732*V*pf*eff) or KW/(1.732*v*pf*eff)
hp=horse power
v =Voltage
pf=Power factor
ef=efficiency
1 hp=745.7 W=0.746 kw
Single phase motor Full load current table [Horse power,Kilo watt]
Three phase motot Full load current table [Horse power,Kilo watt]
Before that i will expalin how to find out the cable current rating.
1.Incoming suppy cable rating.
Motor Full load current * 1.22.Inside cables – Motor circuit cable rating.
Motor full load current * 0.7
Now you will be having a doubt how to find out the full load current of a motor?
Formula for finding full load current of a motor.
3 phase:
Full load current=(746*hp)/(1.732*V*pf*eff) or KW/(1.732*v*pf*eff)
hp=horse power
v =Voltage
pf=Power factor
ef=efficiency
1 hp=745.7 W=0.746 kw
Single phase motor Full load current table [Horse power,Kilo watt]
Three phase motot Full load current table [Horse power,Kilo watt]
Cable size selection chart-Single phase
Cable size selection chart- Three phase
Friday, 10 June 2011
Class is in attendance.
How could I possibly forget to make a review of X-Men: First Class?
Oh yeah, finals. That's why. So shut up.
If you don't want to read this, I have a video summary on my youtube page here. And here:
Basically, I enjoyed this movie. I laughed. I loved. I had one or two emotions throughout.
Michael Fassbender as Erik / Magneto was amazing. Paired with James McAvoy as Xavier, you have a winning combination If only they were the only two characters in the film, then maybe things would have been more impressive Sadly not.
The students/mutants they recruited were... interesting. Banshee was a must-have, so kudos to that. Havok? Clearly an allusion to Cyclops who was actually a member of the first class in the comics, but due to continuity they couldnt' have Cyc in the movie. (Even though they broke some continuity later on.)
Angel was also an original member; remember that winged dude in X3? Yeah, that was the original Angel. Instead they took a pixie-stripper and slapped the same name on her. Who would know, right?
Also, Mystique was hot. Not the blue-stique, but the actress who played the human disguise. Jennifer Lawrenece:
A lovely girl.
As for the rest of the movie, it was fun. It wasn't too serious, it wasn't even too good, but it felt pretty darn 60's and light hearted.
Also, the montages. Oooh, the montages. So fun. So good. Excellent cameo in there as well.
Anyway, I am drunk and must go get drunker. Go see the movie. See you next time when I talk about Green Lantern.
Though on a final note, why bother sticking to some continuity of you're going to kill more of it towards the end? Whatever. Fox can't make a movie like Marvel Studios can.
P.S., don't bother staying through the credits. Nothing to see at the end.
READ MORE - Class is in attendance.
Oh yeah, finals. That's why. So shut up.
If you don't want to read this, I have a video summary on my youtube page here. And here:
Basically, I enjoyed this movie. I laughed. I loved. I had one or two emotions throughout.
Michael Fassbender as Erik / Magneto was amazing. Paired with James McAvoy as Xavier, you have a winning combination If only they were the only two characters in the film, then maybe things would have been more impressive Sadly not.
The students/mutants they recruited were... interesting. Banshee was a must-have, so kudos to that. Havok? Clearly an allusion to Cyclops who was actually a member of the first class in the comics, but due to continuity they couldnt' have Cyc in the movie. (Even though they broke some continuity later on.)
Angel was also an original member; remember that winged dude in X3? Yeah, that was the original Angel. Instead they took a pixie-stripper and slapped the same name on her. Who would know, right?
Also, Mystique was hot. Not the blue-stique, but the actress who played the human disguise. Jennifer Lawrenece:
A lovely girl.
As for the rest of the movie, it was fun. It wasn't too serious, it wasn't even too good, but it felt pretty darn 60's and light hearted.
Also, the montages. Oooh, the montages. So fun. So good. Excellent cameo in there as well.
Anyway, I am drunk and must go get drunker. Go see the movie. See you next time when I talk about Green Lantern.
Though on a final note, why bother sticking to some continuity of you're going to kill more of it towards the end? Whatever. Fox can't make a movie like Marvel Studios can.
P.S., don't bother staying through the credits. Nothing to see at the end.
Thursday, 26 May 2011
What is the difference between control panel and MCC?
You know what is control panel and what are the components used in the control panel. Now we will discuss about difference between control panel and MCC. You might have faced this question in some interviews.
MCC stands for motor control center. It consists of feeders for motors and blowers. Feeders are designed according to the motor rating. In most of the MCCs, auto/manual provision will be there. With manual provision motors can be operated manually. In auto provision external signal is required to start the motor. The signal is given by the control panel. Indicators for the motor operation also will be present in control panel.
Control panel consist of a controller. Controller may be PLC, DCS, relay or some other type. It gives digital signal input signal to the MCC panel to start the motor. Control panel works based on the PLC /DCS program or the relay logic. Instruments are normally connected to control panel. Indications for the interlocks also will be there in control panel. Nowadays single panel is used of using separate control and MCC panel.
Overview: Control panel giving start command to motor through MCC
Related post:
Know more about control panel.
Learn to read electrical relay drawing.
Basics of electrical.
Tuesday, 24 May 2011
How to read electrical relay diagram? [Standard symbols used for drawing electrical relay diagram]
In one of the previous post in instrumentpedia I have described how to read an electrical drawing. Now lets look what is electrical relay diagram. Here I am giving the standard symbols used for the electrical relay diagram. In earlier days instead of PLC or DCS like controllers relays are used as controllers. Nowadays also for controlling small systems relays are using as controllers. Comparing to other controllers it is very cheap. Electrical control circuits are drawn with the standard symbols which are given below.
Components used for making a electrical control circuit and its standard symbols.
Switches.
Selectors.
Push buttons.
Contacts.
Coils.
Motors.
Pilot lights.
Alarms.
Connections
Components used for making a electrical control circuit and its standard symbols.
Switches.
Selectors.
Push buttons.
Contacts.
Coils.
Motors.
Pilot lights.
Alarms.
Connections
Related post:
Learn to read an electrical drawing.
Basics of electrical engineering
Electrical control panels
Piping and instrument diagram
Saturday, 21 May 2011
The only thing left.
Seriously. I can't even tell count the number of times this has happened to me.
Left-handed people are the silently oppressed in this world.
Friday, 6 May 2011
The God of Thunder.
I saw the midnight release of the Thor movie, which is now out in most theaters.
Long review short, I enjoyed it. I didn't fall in love with it like I did Ironman, and I didn't detest it. Perhaps I am biased. I am a superhero fan, and would most likely have a somewhat lower opinion if I was not.
Though, as I said, I enjoyed it. I was entertained. Ultimately that is the point of movies.
There was plenty of action, plenty of laughs, and enough special effects to make you say "whoa, what the shit" repeatedly. Although the camera movement was a little too fast for my taste, blurring out a good portion of the fight scenes.
Also eye candy. Mostly for the women, but still. They give you Natalie Portman, so stop complaining. Honestly, her acting could have been much worse. I guess that's a high point?
The movie throws you in at a comfortable starting point, and introduces the characters and backstory at a relative pace. You don't have to be a comic fan to understand what's going on, which is exactly what they were going for.
Then you get some cool fighting scenes, with giant face-lasers, a giant ice-themed Rancor and a bunch of blue people from Avatar.
[If you want to keep the movie a surprise, I would stop reading about here.]
After that some plot is thrown your way, and Thor is exiled to Earth (a.k.a Midgard). For a day. This is ridiculous to me; after a couple thousand years being Thor, the god of thunder who has had dozens of lifetimes to develop a concrete persona, he becomes a humble man and changes his outlook. It must have been something at that Denny's diner. Probably the pancakes. Or maybe Natalie Portman as Jane Foster is just that hot. (Hint: no.) He probably fell in love with the bars. I have no apathy for New Mexico. Not even people who live there are fond of it! So why would Thor?
Ultimately, if you have the $10 to shell out for a movie, I would say go for it. Did you seen Ironman? The sequel? Yes? Good. Then you will enjoy this, and you will most likely enjoy the upcoming Captain America movie.
Now that is what I am excited about.
READ MORE - The God of Thunder.
Long review short, I enjoyed it. I didn't fall in love with it like I did Ironman, and I didn't detest it. Perhaps I am biased. I am a superhero fan, and would most likely have a somewhat lower opinion if I was not.
Though, as I said, I enjoyed it. I was entertained. Ultimately that is the point of movies.
There was plenty of action, plenty of laughs, and enough special effects to make you say "whoa, what the shit" repeatedly. Although the camera movement was a little too fast for my taste, blurring out a good portion of the fight scenes.
Also eye candy. Mostly for the women, but still. They give you Natalie Portman, so stop complaining. Honestly, her acting could have been much worse. I guess that's a high point?
The movie throws you in at a comfortable starting point, and introduces the characters and backstory at a relative pace. You don't have to be a comic fan to understand what's going on, which is exactly what they were going for.
Then you get some cool fighting scenes, with giant face-lasers, a giant ice-themed Rancor and a bunch of blue people from Avatar.
[If you want to keep the movie a surprise, I would stop reading about here.]
After that some plot is thrown your way, and Thor is exiled to Earth (a.k.a Midgard). For a day. This is ridiculous to me; after a couple thousand years being Thor, the god of thunder who has had dozens of lifetimes to develop a concrete persona, he becomes a humble man and changes his outlook. It must have been something at that Denny's diner. Probably the pancakes. Or maybe Natalie Portman as Jane Foster is just that hot. (Hint: no.) He probably fell in love with the bars. I have no apathy for New Mexico. Not even people who live there are fond of it! So why would Thor?
Ultimately, if you have the $10 to shell out for a movie, I would say go for it. Did you seen Ironman? The sequel? Yes? Good. Then you will enjoy this, and you will most likely enjoy the upcoming Captain America movie.
Now that is what I am excited about.
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