Why the symbol of register is "zig zag"

1593

When we connect the large capacitor bank in series ?

1102

if the nitrates more than 45mg/l in water lead to disease then what is it called

2926

Why we used 690V in ACS 800 drives.Why dont use standard voltage like 415v or 1.1Kv

2460

how much shouid be the rate for ready mix concrete per cubic meter

2037

what are the pecularity of shaver sockets ?

1923

Is it required to lay 2 runs of GI wires along with armoured cables from one power DB Machines of higher rating?

2052

why we dont prefer ac voltage controller instead dimmerstat [if both have same rating] for conducting experiments in laboratories?

2153

Why is steel vital in the construction of an aircraft?

977

how work microwave anteena in mobile tower

2213

How Self works in DG set

2031

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?

2154

Silicon carbide reinforced aluminium metal matrix composites find application in

1060

what is meant by absorptivity?

1124

Write the force balance equation of m ideal mass element.

1266