Does anyone in California using the ABB AMVAC?
I have seen other thread that have indicated it is different way of thinking process
http://www.eng-tips.com/viewthread.cfm?qid=136356
http://www.eng-tips.com/viewthread.cfm?qid=133558
If it does not have a trip coil, then how do design your...
We have a discussion on how to tag high voltage conduit.
We are doing a new installation of conduit for 4160 volts. We are putting several manholes and one of our engineers, who is doing the design, is assigning conduit tags from manhole to manhole and all the conduit tags are different for one...
Does anyone knows where can I get information regarding how the synchronous motors starters works?
We have a 700 HP, 2300 volts synchronous motor connected to a water pump. We used to have a ball valve to open the valve after the motor started. A mechanical engineer came and remove the ball...
My company installed three 1000 HP Worthington Pumps (ductile iron) in 1991. Ten years later we found that the pumps casing were corroded like the pumps were cavitating. We know the pumps were running within their curve limits and we know that this was not possible. We though it was a corrosion...
I am trying to get a speed feedback from a 1 HP AC motor using a simple tachometer. I have look around but the only one I found is one that Dart Controls sells. The device is very simple. It attaches to the end of the motor and give pulses. (the model number is PU-2E for a single pulse per...
One my engineers design a valve control house. This buildign has three rooms: the lectrical room the generator room and the valve control room. The electrical service is at 2400 volt, 3 phase, 3 wire wih a 45 kVA transformer and we install a pad monted transfromer inside the electrical room to...
One my engineers design a valve control house. This buildign has three rooms: the lectrical room the generator room and the valve control room. The electrical service is at 2400 volt, 3 phase, 3 wire wih a 45 kVA transformer and we install a pad monted transfromer inside the electrical room to...
