Control circuits

[bernard]

Hi
Does anyone know of a link for starting methods for 3 phase semi hermetic compressors.

Thankyou.

Bernard

[Rfcont]

Hi Bernard!

Starting method (Not important what type compressor)depends very much from power of the motor

It is very nice idea do it with the softstarter.

[chillin out]

Hi bernard,

Is this what you mean?

http://www.johnson-pump.com/Horticul...tart-motor.htm

OR

http://www.cacciaelettronica.it/products2_2117.htm


Chillin

[chemi-cool]

Hi bernard,

A soft start is a good one.

YY is another one.

And direct start.

These are the most common ways to start a semi hermetic compressor.

Chemi

[wambat]

Hi
Does anyone know of a link for starting methods for 3 phase semi hermetic compressors.

Thankyou.

Bernard

You may find this informative
http://www.lmphotonics.com/m_start.htm

[bernard]

Thankyou

The links gave me all the info I needed,sorry for the delay in my response but I,m just so busy with work at the mo.

Kind Regards

Bernard

[Peter_1]

http://www.ecopeland.com/Literature/..._Motors_SH.pdf

[bernard]

Thanks Peter

Most of the part wound motors I have seen have their timers set for 1 second.Is this a standard setting or should it vary depending on size ?????

Thankyou

Bernard

[Peter_1]

We set it also that short: 1 sec.
In Y-D start you have to set the time as long the current in Y isn't 'flattened' . You can only set this by measuring the start AMP's and time when the current drops and stabilises. This will be the time for the Y-run.