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hi Is there a table of current transformer size by connection size?

hello can I jet please a recommendation for calculating short currents, voltage drops, cable size software? thanks

Thank you for your response The current of this contact is for long operation or just when I switch the load?

hi this is the data sheethttps://files.engineering.com/getfile.aspx?folder=b2c4c2d6-e663-442e-bed2-b02bd4190a56&file=7lf2614_1e.pdf

hi this is what is write in the data sheet Switching capacity resistive (ind. cos. j = 0,6) loads 16(2) A 250 V ~ what is mean?

hi what is mean in the contact the number 2 16(2) A 250 V

hi if i have a transformer 22/0.4 kv and at the 0.4 side i have 4 cable per phase the cable from the transformer 0.4 kv side go to the main cabinet and connect there to the bus bar r,s,t,n there is a test that i can check If there is cross-linking on cables without disconnect the cable and...

hi if I have 2 supply power to a building. one from the electric company and the other from generator for emergency ( loss power, fire for pump and etc) the generator is located at building. the contactor for the change over supply must be ac-3 or can be ac-1? I have contactor that at ac-1 is...

hi i mean 400vac what i consider that if you use ac-1 load must be 690vac operating voltage to get this current but from your answer you mean is up to and including 690V AC. so why at ac-3 i have Different voltage and current Rated Operational Current AC-3 (Ie): (220 / 230 / 240 V) 60 °C 53 A...

hi in this data sheet: http://new.abb.com/products/1SBL367201R1300/af52-40-00-13-100-250v50-60hz-dc-contactor Rated Operational Current AC-1 (Ie): (690 V) 40 °C 100 A (690 V) 60 °C 80 A (690 V) 70 °C 70 A is mean that the operating voltage must be 690 vac to get this nominal current? and...

hi Further to the question I asked: Regarding to the attach drawing if I change the connection between points 9 and 12 this mean the star point (4,8,9) What tensions will I measure between the phases and and neutral L1-N L2-N L3-N thanks...

hi a friend asked me a question: In the generator test, the voltage between phase and zero was measured 400,400,230 What could be the problem? thanks