if a 3phase motor runnig in star delta starter with full
load of its,and its rated 15 amps.now we conneted over load
thermal relay at its main contactor,here what will be our
amps sittings?
Answers were Sorted based on User's Feedback
Answer / pillay
If star delta connection it will have 6 wires . so the amp setting of the TOR WILL BE FULLLOAD AMPS /ROOT 3
15/1.732 =8.6 AMPS
| Is This Answer Correct ? | 6 Yes | 2 No |
Answer / k.prakashchandra
The thermal relay is coeected to mains and not after the
starter.The setting may be at 110 to 120 % 0f full
load.i.e.16 to 18 A
| Is This Answer Correct ? | 1 Yes | 4 No |
At what speed an electric car can run with 2 HP motor of weighing 400 kg?
Sir, I completed DEEE... And now I working in TNEB for one year apprenticeship. If I eligible for applying c license and how can I get?
What is meant by field loss in a DC motor?
WHAT IS DIFFERENCE BETWEEN idmt and instentanous relay? is idmt is used as back up protection or else?or when instantenous relay saturates IDMT will operate???
how to calculate energy of 3-phase motor?
What is the Maximum Power generation capacity of a Synchronus Machine ??
show the single line diagram of star delta starter with single phase preventer
which tap of the transormer you will use in critical condition(worst)?
what is the use of vcb & isolator in substation?
why dc is used in control circuits for MV & LV switchgeras instead of ac
how the length effects the ampacity of the cable? if a cable is carrying a current of 100A for 50m length then what will the effect on current if we double the length?
hi i am aziz electrical associate engineer. i am faceing problem in acs800 vvvf drive.it is tripping wothout any alarm/fault.i cheaked all parameters and fault function of drive, all are correct as well as communication parameters.but still it is tripping (drive is tripping in running position not in starting)
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)