Answer Posted / vinod sharma
A 100MVA T/F MAY BE COOLED WITH FORCED LUBRICATION FORCED
COOLED. IT MEANS THAT COOLING OIL IS CIRCULATED WITH MOTOR
AND THIS AREA IS COOLED WITH FORCED COOLING FANS.
| Is This Answer Correct ? | 0 Yes | 7 No |
Post New Answer View All Answers
We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?
salam,hi, i need to know what the spesification of 300amp msb...
explain the function of brush less dc motor?
tell me about eletrical contractor
How would you relate your key competencies to this position?
what is the difference between elcb and rccb ?
What is creepage distance..... what will be the value for different voltage level
How generator NPS(NEGATIVE PHASE SEQUENCE TEST)TEST WAS DONE? PROCEDURE WITH DETAILS?
What is the difference IN MCCB's between thermal magnetic and electronic tripping system ?
sir iam from electrical and electronics branch ,can i appear for the hpcl offline requirtment? if yes please mail me on vikram_raju25@yahoo.co.in
What is core CT & it's function?
Can anyone please provide me details of MCCB/Contactor/SFU rating calculations for a motor feeder..for example 50 kw.. not from type-2 cordination chart. i want manual calculations..
Types of test in Switchgears, MCC, NGR and DB's how it should be procced. Can anyone give me the details here or email me to pasuvaraj.k@gmail.com
What is corkscrew rule?
Both generator parallel condition shared load equally but one genrator taking ampere more than the other what are all the causes to make like this
