Paul Cataldo
Stainless
- Joined
- Dec 9, 2004
- Location
- Atlanta, GA
20hp Leeson idler
FLA = 48a @230v
1765rpm
This is a 12 lead motor with 3 sets of 4 leads wired together for the 3 legs, (unlike many 9 lead motors)
Motor also is inverter duty rated (label states "IRIS Inverter Rated Insulation System)
I am very limited in electrical knowledge, so bear with me here, but upon googling about 12 lead motors, I am *THINKING* I may have what is called something like a "WYE-START/DELTA-RUN? motor, which can be setup for soft starting or something to that affect? Maybe you guys will know?
Anyhow, my questions are very basic, and as follows:
1. What size pony motor should I put on this 300lb monster 20hp idler? Is 1/2hp too small? Should I go with 3/4hp or even 1hp?
2. I understand fully that either a 1725rpm OR a 3450rpm pony motor can be used, (with proper sizing of the pulley/sheaves) however, upon browsing Mcmaster Carr and ebay for 1.625" bored pulleys for the 20hp idler, I quickly noticed most pulleys are like 6"-7" in diameter. Nothing smaller.
So this leaves me wondering if I should use a 1725rpm pony motor (same speed as my idler) and try to find a big pulley to match the idler pulley, OR if it would be easier to find a 3"ish dia pulley and go with a 3450 rpm pony motor? It just seemed like I wasnt seeing tons of pulley options like I wouldve thought.
3. What means are you guys implementing to protect the system in the event of a power surge where power goes out and then comes back on like 30 seconds later, to prevent the idler from single phasing on just 2 legs?
Thanks for any help.
FLA = 48a @230v
1765rpm
This is a 12 lead motor with 3 sets of 4 leads wired together for the 3 legs, (unlike many 9 lead motors)
Motor also is inverter duty rated (label states "IRIS Inverter Rated Insulation System)
I am very limited in electrical knowledge, so bear with me here, but upon googling about 12 lead motors, I am *THINKING* I may have what is called something like a "WYE-START/DELTA-RUN? motor, which can be setup for soft starting or something to that affect? Maybe you guys will know?
Anyhow, my questions are very basic, and as follows:
1. What size pony motor should I put on this 300lb monster 20hp idler? Is 1/2hp too small? Should I go with 3/4hp or even 1hp?
2. I understand fully that either a 1725rpm OR a 3450rpm pony motor can be used, (with proper sizing of the pulley/sheaves) however, upon browsing Mcmaster Carr and ebay for 1.625" bored pulleys for the 20hp idler, I quickly noticed most pulleys are like 6"-7" in diameter. Nothing smaller.
So this leaves me wondering if I should use a 1725rpm pony motor (same speed as my idler) and try to find a big pulley to match the idler pulley, OR if it would be easier to find a 3"ish dia pulley and go with a 3450 rpm pony motor? It just seemed like I wasnt seeing tons of pulley options like I wouldve thought.
3. What means are you guys implementing to protect the system in the event of a power surge where power goes out and then comes back on like 30 seconds later, to prevent the idler from single phasing on just 2 legs?
Thanks for any help.