Hi, I want the following information: 1. Motor controller for induction motor and the rating of the motor is 2 kw, 1500 rpm, 50 Hz. 2. Overvoltage , over...
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Guenter.Weber@...
Oct 1, 2005 7:50 am
Ich werde ab 30.09.2005 nicht im Büro sein. Ich kehre zurück am 10.10.2005. Ich bin ab 30.09.05 nicht im Büro. Ich kehre zurück am 07.10.2005....
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pdhag@...
Oct 4, 2005 4:03 am
we are using ATV series drives for crane motor. find them at schneider-electric.com. also the drives have the overvoltage(dc bus) overcurrent, short circuit...
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pdhag@...
Oct 4, 2005 12:30 pm
capacitance is measured in farads and it is proportional to the physical area of conductor plates and inverse to the plate distance. the relation is...
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pdhag@...
Oct 5, 2005 5:13 am
i think you must be having starter in the compresor and chiller unit itself since you intend to test the motors which will be used for these applications only,...
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pdhag@...
Oct 5, 2005 5:15 am
120 f/p = n rpm f = freq p= pair of poles D jihad alkhayrat <nonjihad@...> wrote: hi everybody i want to ask what is the formula to calculate the rpm of...
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pdhag@...
Oct 5, 2005 5:16 am
120 f/p = n rpm f = freq p= pair of poles D jihad alkhayrat <nonjihad@...> wrote: hi everybody i want to ask what is the formula to calculate the rpm of...
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pdhag@...
Oct 5, 2005 5:27 am
first buy one dc motor. it is cheap. find a dc supply in your collage or make one from readymade rectifier blocks and regulator chips etc suitable for rated...
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pdhag@...
Oct 5, 2005 5:29 am
for ac drives the o/p current we measured for 50 and 5 hz is same for hoisting application with 33 Te load both the times. but for fans it may be different D ...
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pdhag@...
Oct 5, 2005 5:33 am
triac will control the AC current i think it means how can you generate the different freq required for acceleration and decceleration by triac, instead search...
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pdhag@...
Oct 5, 2005 5:47 am
consultthe motor manufactorere and find the allowed time of operation at 50 Hz for the 60 Hz motor. instead of using the inverters to change 50 hz power to 60...
Hello Hazem The starting current of an induction motor started direct on line, (Full voltage start) is equal to the locked rotor current of the motor and...
hi, i am nava attached to one of the manufacturing company in malaysia. recently we're plan to start energy saving program and there is a vendor suggested to...
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MADHU G
madhugopinath@...
Oct 6, 2005 3:37 am
Hello there, I think first you need to do a motor survey using a power analyser and fin dout the present energy consumption. Then look at for VFD or reduced...
Hi there, Thank you for your advice, i will do that. rgds. nava ... From: ElecMotorControl@yahoogroups.com [mailto:ElecMotorControl@yahoogroups.com]On Behalf...
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pdhag@...
Oct 6, 2005 4:46 am
we have schneider-electric drive atv series and they also have variable torq drives and their constant torq drives can also be configured to work for variable...
i m raj and i have completing my B.E. in june' 05. U can done measurement and protection of inrush current of single phase transformer. sonu_jayanti...
Hi, How do we calculate the capacitor rating for single phase motor?If someone has an answer, please help me....
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Stanley Ngiam
stanleyngiam@...
Oct 13, 2005 12:49 pm
Dear All I tried to install a step down tramsformer at a residential main MCB 40amp. From this MCB 40amp cater to others home appliances like air con, lights,...
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Guenter.Weber@...
Oct 17, 2005 10:37 pm
Ich werde ab 17.10.2005 nicht im Büro sein. Ich kehre zurück am 31.12.2006. Ich bin ab 17.10 nicht im Büro....
hi all I'm EHAB any one can help me and tell me how i can estimate the power of cooling unit ... __________________________________________________ Do You...
Hi friends I want to calculate the losses occuring in capacitor used to increase power factor of a 850 KW motor installed in my company Hitesh Laharia Grasim...
Hi friends I want to calculate the losses occuring in 7.5 MVA, 132/6.6KV Transformer installed in my company. Hitesh Laharia Grasim Industries Ltd India ... ...
Hi friends I want to calculate the losses occuring in 7.5 MVA, 132/6.6KV Transformer installed in my company. Hitesh Laharia Grasim Industries Ltd India ... ...
Hi Friends I want to calculate the KVAR developed by 6 KM transmission line comming to the company end. How can I? Please tell.... Hitesh Laharia Grasim...
Hi Friends Please tell me how LRS(liquid resistence starter) works All the phases are short in the water in the LRS, than also how maintain the resistence. ...
Hi Mr. Laharia, you want to calculate your transformer losses is it? it can be done by 2 ways. 1) calculating your input and output of your transformers input...
