I work at a water pumping facility that has had a lot of trouble with 1 pump that has been offline for 3+ years.
Basic information 1. 200HP 20MGD low lift submersible mid-level voltage 4160v. This pump has been rebuilt 3 times in 2 years. first 2 times when reinstalled it would not even start. the 3rd time it started and ran 5 days was shut down but then failed on restart. This pump is a small pump for this facility (the rest are 400 hp). piping and wiring to this pump are set up for easy upgrade to 400 hp pump. (wiring and starter is same as other 400hp pumps) Distance from motor control (starters) to pump is 1200+ feet. Question Could the 1200 feet of wire between starter and pump be contributing to this ongoing problem? I have seen problems on lower voltage VFD systems where distance caused failure. These pumps are not VFD and are relatively new 2002-2005. I will verify any hazy or inconsistent facts here that come into question. Thank you!