Motor Specification from one of the reputed consultant in India states following :
For motors with starting time upto 20 secs at minimum permissible voltage during starting, the locked rotor withstand time under hot condition at highest voltage limit shall be at least 2.5 sec more than starting...
Hi,
I am trying to size cables from Star Delta Starter to Motor
During Star connection,
Load Current in Cable from SWGR – Motor Term. U1, V1, W1 = 1/3 (33%) of actual FLC
Load Current in Cable from SWGR – Motor Term. U2, V2, W2 = 1/3 (33%) of actual FLC
Starting Current in Cable from SWGR –...
Hi,
We are experiencing peculiar problem at site, which is causing our process plant to trip.
Our plant has 2.3kV MCC where motor feeders uses the GE Limitamp Contactor (CR193V), which were retrofitted with Vacuum bottle in past. During retrofitting, Contactor Economizing Module (CEM) were...
Hi Guys,
I have following query regarding NEC code requirements for cable ampacity derating.
We have following situation for calculation of motor cable sizes for cables leaving from one of the MCC in Substation.
Cable Laying Condition: Uncovered Cable Tray
Nos. of Power Cables in tray...
