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Posted by Dido on August 20, 2006, 2:23 pm
From my experience I have found that are big variations
in starting of refrigeration compressors.
Hard start and soft start amperage will very but only for short
period, well how on the soft start amperage may be little smaller
but for longer time, in hard start amperage will be higher but for
shorter period of time, so the average current it will most likely
be very close, you will have to choose what you can with stand more,
with these phenomena you may had to experiment your self to find what
works better, remember time is milliseconds and all compressors are not
same including that some compressor may run without starting cap.
or hard start (device) and yet it could be use with both. It depend on
OEM design and how often machine start and stops.
Hard start kit takes place of starting relay and starting cap.
so if you have system using starting relay and cap. you will not use
hard start kit (device) their will not be any benefit from it.
I work with all setup above and I can not see that anyone
can tell you what will work better for you in your situation.
Good luck from Dido
www.cas-environ.com
>I need someone to shed some light on the priciples of hard start kits
> commonly applied to HVAC installations. I deal with industrial three
> phase motors on a daily basis. For isolated, off-grid installations
> (mostly offshore), we often utilize soft starters on large motors to
> help reduce the required starting current capacity of generators.
> While chatting with one of my neighbors who is an HVAC tech (unsure of
> his competency though) I asked if there were any common modifications
> to AC circuits that allowed for reduced current starting. He mentioned
> "hard start kits" but could not explain the concepts involved. I'm
> trying to size a generator for home use and would like to consider
> means of reducing the required starting current for my AC units (4 &
> 1.5 ton units).
>
> Thanks in advance for any valuable knowledge!
> tree
>
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