WHAT IS THE MEANING OF BALANCED / UNBALANCED IN STABILIZER
TYPES.
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hi frienda We have 750kva cater pillet dg set we are fasing one diffrent proublam in dg we are start dg set after one mint applying load around 450a load but dg was run 3 Or 4 mints after 3 mints dg was shuding down automatic how to face this proublam pls tel any budy
what is the static device rather than xmer which work on same principle as xmer?
Describe the test procedure to determine the vector group
What is the Powar consumption of fan low speed to full speed? is it same ?
how to calculate power factor of capacitor? what is transformer rating?
what are the alternator cooling system? how it is represented?
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?
should %impedance be high or low in a power transformer? if so why?
can some one clearly explain why -48 volt DC use in telecom site????
1. Can a 12v DC choke operate a 60v/12w PL lamp ? 2. Can a 230v ballast fire / operate a 60v/12w PL lamps.
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what is difference between isolation and ultra isolation transformer?, what is the method of testing ?
whenever a squirrel or a crow gets tangled near the out put of the feild transformer there is a discharge of 440 volts of current through the neutral due to which my appliances blow up causing a huge bang.will the RCCB help in these conditions