The B-phase stator winding temperature is running about 15° F higher in relation to other two phases.
From the switchgear 1 (pump motor currently in service)protective relay, we have the following voltages per phase across each motor: ØA-B: 4.081 kV, ØB-C: 4.104 kV, ØC-B: 4.093 kV and from...
We have two induction motors that are connected to two seperate 4.16kV Medium Voltage Switchgear bus and both MV switchgears are fed from a single step-down main transformer. We experienced some problem with both of the induction motors stator winding temperature on phase "B" running at...
We have a Caterpillar D349 backup diesel generator set that's in need of a new voltage regulator replacement. The OEM is no longer supporting this equipment. The following is the data on the generator Model #:SRCR, Generator Frame: 687, Excitation Voltage:135V @ 71A, 1800 RPM, Generator...
New here to the forum. I have a project to implement Zone Selective Interlock (ZSI) on a 480V bus (Y-connected) system using CH Digitrip RMS 520 LSIG. I will like to disable the "ground fault" function on the main breaker and some feeder breakers feeding the MCC and large motor downstream. We...
