Interested to Buy Any Domain ? << Click Here >> for more details...
what is derating factor in Cable ? how we minimise this?
- 18 Answers
- 117929 Views
- Bhel, College School Exams Tests, I also Faced
- E-Mail Answers
Answer Posted / amjad riaz
derating factor is also inverse of thermal temperature.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
At full load wat is the motor p.f And at no load will is the motor p.f?
In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?
what reactive how to maintain
Why induction motor is widely used in industry
what is the id1 & id2 setting in differential protection relay of CSPC?
In an ACB shunt trip coil and undervoltage coil operated normally( breaker open and charged). But closing coil not operating untill manually discharge and recharging. Any help.
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?
What is the de rating factor of cable? What is the importance of the de rating factor in cable selection?
what is transient voltage?
if voltage bt phase & nutral is 38v in a panel board . whats the root cause.
What is effect of over voltage and under voltage on ACB
what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?
There are different classes of protections in power plants.class a,b,c are clear..is there any class d and e r there..and elaborate class b protection.
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp
