dm9289
Industrial Maintenance Electrician
- Location
- Pennsylvania
- Occupation
- Industrial process repair/ maintenance Electrician
Thank you for your reply but only the tag shown. I have been reaching out to the manufacture. I did find online they recommend 500kcm. It is a Y delta start. It does some form of cycling but never shuts off.Equipment of this nature is generally specified with a minimum circuit ampacity (MCA) and a maximum overcurrent protection device (MOCP). Do you have access to that information?
Buried amongst a bunch of stuff i did find and engineering data sheet. Max breaker 500 amp and thank you everyone!I would likely treat it like a motor and use a circuit breaker larger than 400A. Maybe as large as 600.
I have not dug deep yet but has the 2 sets of contactsIt's a Wye start Delta run circuit? Does it have 6 conductors?
Probably an air screw. Smaller ones do eventually shut down, if no air demand after a preset time. Timer resets, don’t know about the big ones.Thank you for your reply but only the tag shown. I have been reaching out to the manufacture. I did find online they recommend 500kcm. It is a Y delta start. It does some form of cycling but never shuts off.
This one never shuts off except when it goes boom.Probably an air screw. Smaller ones do eventually shut down, if no air demand after a preset time. Timer resets, don’t know about the big ones.
Is there a single connection point for the feed circuit like in a control panel?I have not dug deep yet but has the 2 sets of contacts
Well if from the starter to the compressor is 6 conductors for the Wye start Delta run configuration then the conductors are sized at 72% of the FLC. (58*125%) since the conductors will each carry 58% of the FLC.I have not dug deep yet but has the 2 sets of contacts
That's why I initially though that the circuit feeding this would be terminating in a control panel. I guess we need more details to give an accurate answer.The nameplate says it has a 200HP motor and an additional 7 HP of other loads.
It also shows a ridiculously low SCCR of 5kA.
Should be a package unit, doesn’t list a refrigerant, so the air dryer is separate.That's why I initially though that the circuit feeding this would be terminating in a control panel. I guess we need more details to give an accurate answer.
There is at least a Y-D starter and some power distribution blocks. I don't know of any 200HP starter that is only 5kA rated, but I might be thinking of 47 years ago.That's why I initially though that the circuit feeding this would be terminating in a control panel. I guess we need more details to give an accurate answer.