Explain the principle of operation of induction motor? ... Looking for last minute shopping deals? Find them fast with Yahoo! Search. [Non-text portions of...
1554
S V
vogelsangs
Feb 1, 2008 8:13 pm
I am looking for a starting point here... Where can I find info on running AC motors at higher frequencies with a line frequency power supply? The idea is to...
1555
raghava rao
chcrr
Feb 1, 2008 8:13 pm
The temprature rise while starting of the mainly depends only on the magnetude of current and time for starting.Normally the starting current 5 to 6 times of...
1556
subraokmtnm_hyd
Feb 2, 2008 7:07 pm
... magnetude of current and time for starting.Normally the starting current 5 to 6 times of full load current and on supply voltage.The starting time depends...
1557
wynnchen02
Feb 4, 2008 8:57 pm
we have a motor which power factor is 0.532 while it is running, how to improve it and try get 10% energy saving on it running loads?...
1558
girez
Feb 4, 2008 9:00 pm
... the ... type ... for ... If ... with ... at ... true, if ... fan? ... losses. ... this discussion. Alex ... Mobile....
1559
mohsen
mah9901
Feb 6, 2008 2:43 am
Connecting a capacitor with mOtor can improve the power factor Good luck Mohsen ... From: wynnchen02 Date: 2/5/2008 12:59:49 AM To:...
1560
girez
Feb 6, 2008 2:43 am
... to ... Hi, Looks like the simplest and most effective way is to install a capacitor. Just figure out the your reactive power and install a capacitor that...
1561
sivarammurthy
Feb 6, 2008 2:43 am
See some research must be done to reach the conculsion that PF is the culprit. Kindly check the following: Rated power of the motor in KW or HP Operating load...
1562
vetha4
Feb 6, 2008 2:43 am
... reply: pwm inverters can be made using mosfets. please refer power elctronics by bemra or other authers. six different pulses to be formed...
1563
tarunbadshah
Feb 8, 2008 8:15 pm
Dear all, how we can select the wire for particular load and what the size and rating should be for that load. explain through exampale....
1564
tarunbadshah
Feb 8, 2008 8:15 pm
Dear all, plz tell me the principle and how the DC motor works....
1565
goutam mohanty
ctk_goutam
Feb 8, 2008 8:16 pm
hi all, we purchased a motor of 1 HP, make - HM, which had both the options of running in star and delta mode. connections for both the mode of operation was...
1566
raghava rao
chcrr
Feb 9, 2008 7:05 pm
Dear Goutam, I think motor desinged for star only. Generally on name plate MFGs mention both connections and they will put 'X" mark on which is not applicable....
1567
girez
Feb 9, 2008 7:05 pm
... of running in star and delta mode. connections for both the mode of operation was displayed on the back side of the name plate. initially the motor was...
1568
alhilalco2001
Feb 9, 2008 7:05 pm
... In ElecMotorControl@yahoogroups.com, goutam mohanty <ctk_goutam@...> ... options of running in star and delta mode. connections for both the mode of...
1569
girez
Feb 9, 2008 7:05 pm
... The best way to deal with your issue is to go to the IEEE Regulations. You will find everything you need to know about wire size and loading. And what...
1570
akhilesh kumar
akhilesh1470
Feb 9, 2008 7:05 pm
Hi gautam, your delta connection may be wrong. goutam mohanty <ctk_goutam@...> wrote: hi all, we purchased a motor of 1 HP, make - HM, which had both the...
1571
gurmeet_issar818
gurmeet_issa...
Feb 9, 2008 7:05 pm
Dear Gautam, You have not mentioned the time , after what time it was tripped by what? Through Relay or MCB or other device. Hope it may be the reason of...
1572
K.Ravindran
ravindran272000
Feb 9, 2008 8:06 pm
... options of running in star and delta mode. connections for both the mode of operation was displayed on the back side of the name plate. initially the...
1573
mohsen
mah9901
Feb 10, 2008 6:41 am
Connect one coil on u and z Other coil on v and x 3rd coil with w and y See the attatchment ... From: K.Ravindran uvwxyz Date: 02/10/08 00:06:29 To:...
1574
Wynn Chen
wynnchen02
Feb 10, 2008 6:41 am
Dear Goutam, for small DOL motor, such as less than 2KW, it is better to wire to star connection to minimise the start current. best regards. Wynn Chen We work...
1575
mangala tua
mrptua
Feb 10, 2008 4:33 pm
Hai Goutam. There is maybe something wrong connection inside the motor and you can check out by ohmmeter than reconect again. Or maybe the voltage applied on...
1576
goutam mohanty
ctk_goutam
Feb 16, 2008 6:43 pm
Thanks for your valuable suggestions... Regarding the voltage, i measured the voltage, L-L , which measures 430 V .. however, i have not checked the winding...
1577
insaji78
Feb 16, 2008 6:45 pm
what is the reason we specify the size of the cable in sqmm...
1578
Rajesh Kumar Sunkarin...
srcumar
Feb 17, 2008 9:14 pm
Dear goutam, In order to measure the resistance of the winding in a motor , you first disconnect the power supply cables from the terminals & then by using...
1579
insaji78
Feb 17, 2008 9:14 pm
-- still not got any reply wtg for your kind information...
1580
Rajesh Kumar Sunkarin...
srcumar
Feb 17, 2008 9:14 pm
Hi Bcoz, the current flows only on the surface of the conductor, hence we have to consider only the surface area of the conductor. Regards Rajesh ... [Non-text...
1581
girez
Feb 17, 2008 9:15 pm
... The size of conductors and its ability to cary current is determined by it cross sectional area (in sq " or mm) I seem to remember a 15 amp wire was 3...
1582
milad_ziai_ziai
Feb 19, 2008 1:55 pm
Hello Everyody do you have any ebook available which teaches fuzzy logics and Fuzzy toolbox of MATLAB simultaniusly????IF you have, Can you share it with Group...
