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bernard
21-11-2005, 09:31 PM
Hi
Does anyone know of a link for starting methods for 3 phase semi hermetic compressors.

Thankyou.

Bernard

Rfcont
21-11-2005, 09:54 PM
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
21-11-2005, 10:00 PM
Hi bernard,

Is this what you mean?

http://www.johnson-pump.com/Horticulture/default.htm?page=/Horticulture/quickstart-motor.htm

OR

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


Chillin:) :)

chemi-cool
21-11-2005, 10:19 PM
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
22-11-2005, 12:44 AM
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
24-11-2005, 09:15 PM
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
25-11-2005, 09:16 PM
http://www.ecopeland.com/Literature/eCopeland/en_Art_Part_Winding_Motors_SH.pdf

bernard
26-11-2005, 10:05 AM
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 ?????:confused:

Thankyou

Bernard

Peter_1
26-11-2005, 11:12 AM
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.