Dear AllI wan to know that we are using large type of cable like 300sqmm and other and our load also in much kw but we are using a small type fuse in main supply (not HT Side) how can it bear load.
Latest Answer: Fuse rating and cabel selection is depend upon the load current and fuse current is always greater than the load current. Suppose your load is motor then the starting current of motor is 3 times greater than the normal current then your fuse rating ...
what is the testing of h.t and l.t. motors before erection and commissioning?
what is the difference of h.t and l.t. cables ?
Latest Answer: Voltage level is different in LT & HT cables.LT is low tension i.e Low voltage & H.T is high tension i.e High voltage .Generally 433 v (or 1.1 kV in cable ) is LT system and3.3 KV, 6.6 kV , 11 KV, 22 KV , 33 KV etc are HT cables. ...
How does a AC drive work? Why does not AC motors blow up when testing dead short but it would if you put DC on it?
Can differential protection operate while its only one side is energized or being energized (HT side in this case)? When trying to energize a 132/11KV t/f from HT side when its differential protection
Why CTs are connected in star on T/F delta connected winding side & in delta on T/F star connected winding side for T/F differential protection?
Latest Answer: we need to connect star connection of the CT secondary in Delta side of transfomer and delta connection of CT secondary to starside to bring all the voltage and current vector in same phase ..and pilot current injecting in the differential relay should ...
Latest Answer: this is engine starting sound when we start D.G. sets. ...
Latest Answer: Hi Several factors influence the choice of frequency in an AC system. Lighting, motors, transformers, generators and transmission lines all have characteristics which depend on the power frequency.The first applications of commercial ...
Why do we rate transformer in KVA not in KW?
Latest Answer: Transformer rating is always in KVA rather than in KW. it is due to the fact tha the core loss inside the conductor (which are mainly hysteresis loss and eddy current loss) depends upon the voltage and the iron loss depends upon the current core loss=v^2/R ...
What do you mean power factor?What is the use of Power Factor?
Latest Answer: Theoritically power factor is defined as a ratio of INPUT POWER to POWER CONSUMED. Controlling the power factor is very much important and it ranges from 0.5 to 0.8 ...
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