I hardly ever use VSDs in my business but do use quite a few soft start/stop units up to 18.5kW. Babies. They are used on pumps and there are no real issues here but, as Terry pointed out in a previous thread, soft starters can be fairly useless when starting heavily loaded conveyers, for example.
I normally use the Sprechur & Schuh soft starters as they are the same width as the S&S contactors and fit in line quite well. They are also inexpensive, have thermal protection and automatic bypass contactor built in etc etc. Quick and easy - saves heaps of time. I believe AB sell them also. They own S&S these days. I believe the range has now been extended to 45kW but would expect the larger ones to be a bigger size. Have not looked yet.
I have just had a sales rep in selling the new range of ABB soft starters. They are definately not as easy to mount in switchboards, take up more space etc but, they have a class 30 soft starter for heavy duty. As I hardly ever use these things I am unaware of class 30 soft starters and their advantages. They do list long conveyers as a suitable application for the soft starters.
Do any of you know about class 30 and the advantages of them on heavy duty loads?
Are they configured and/or work any differently to class 10 or are they just heavy duty in the sense that they use larger heat sinks or something?
I also notice that they sell specialty delta in line soft starters. Could be interesting.
I normally use the Sprechur & Schuh soft starters as they are the same width as the S&S contactors and fit in line quite well. They are also inexpensive, have thermal protection and automatic bypass contactor built in etc etc. Quick and easy - saves heaps of time. I believe AB sell them also. They own S&S these days. I believe the range has now been extended to 45kW but would expect the larger ones to be a bigger size. Have not looked yet.
I have just had a sales rep in selling the new range of ABB soft starters. They are definately not as easy to mount in switchboards, take up more space etc but, they have a class 30 soft starter for heavy duty. As I hardly ever use these things I am unaware of class 30 soft starters and their advantages. They do list long conveyers as a suitable application for the soft starters.
Do any of you know about class 30 and the advantages of them on heavy duty loads?
Are they configured and/or work any differently to class 10 or are they just heavy duty in the sense that they use larger heat sinks or something?
I also notice that they sell specialty delta in line soft starters. Could be interesting.