Homework - low voltage side 3x400V and a short-circuit power on the low voltage side 95MVA is powered by an OPS

[Thomas]

Hello everyone please help me with this homework which is too hard for me due to the fact my teacher didnt teach well so i have some problems with this schoolwork.

a distribution transformer station with a voltage on the low voltage side 3x400V and a short-circuit power on the low voltage side 95MVA is powered by an overhead power supply 4xAL 70mm2 (aluminum) with a length of 2.5 kilometers. this line is terminated with a switchgear, the component is a single-phase distribution board supplying the circuit of a residential installation with a length of 19 meters, made using aluminum YADYp 3x2.5 mm2. determine short-circuit conditions at the end of the overhead line and pass the expected current at the end of the residential installation configuration. short-circuit current exclusive meters for t = 20 ms and thermal equivalent current during the short circuit Tk = 40 ms

 

[Dan]

Hi,

We don't do your homework for you I'm afraid. Nice try though.

You can however apply to gain access to our trainee forum, and the lads in there are lovely and will help you gain the knowledge to work it out yourself. But we don't just provide answers I'm afraid.

Apply here: Apply to Gain Access to Trainee-Only Forum - https://www.electriciansforums.net/forums/apply-to-gain-access-to-trainee-only-forum.60/

 

[Marvo]

Yeah... nice try but you're a lot more likely to get assistance if you post your best attempt at an answer along with your working out. Even joining the Trainee forum isn't going to to get your homework done for you without you showing an attempt at an answer first.