We're unable to start a 1500hp, 4000 volt motor operating a centrifugal pump under generator power. Pump starts against closed valve that slowly opens in 3 minutes. But we don't get there. Gen manuf.-set CB trips on undervoltage. Generator manufacturer assures us that the gen-set is sized...
When pulling a new 600 volt feeder, consisting of (4) 500 kcmil and (1) 4/0 grd; I am confused about what diameter cable to use in the weight correction factor calculation. Or, if I can even use that formula for weight correction factor. Cablec's old manual just says that if all cables are not...
We're specifying a portable (moved around as we renovate 10 stations over the next 8 years) hydropneumatic pump station with 2 duty 1 standby centrifugal pumps with VFD drives. The pumping rate is proposed to be tied to the flow rate out of station. If the first pump can't keep up, we start...
