Answer Posted / madhanc
Normally Motors starting current when using of DOL/Delta to avoid the starting current and insulation we are using Star delta connection to protect the motor from the insulation fails and reduce starting current
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
What is NGR . What is the purpose of 10 sec ,60 sec rating of NGR.
I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?
List the disadvantages of constant k filters?
brief notes on ammeters
what is the clear formula to calculate cable size for a load
What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?
In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans
what is meant by motor startup supervision & motor load jam protection ?
what is your aim
how to decide the panel size like MDB ,SMDB PANEL SIZES
can anybody send the rrb chennai &rrb bopal question papers of 2006&2007.My exam is on 12 oct 2008.Its urgent
Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?
What is the breaking capacity of transformer and how can we calculate the breaking capacity of tranformer
What is a differential amplifier?
which type of effect of turbine and generator reverse power protection ?