what is let through energy of mccb
Answers were Sorted based on User's Feedback
Answer / matt
Let through energy is the amount of energy that will be let though in a short circuit condition. The let through energy (I^2t) is calculated from the fault clearing time and the trip multiplier, which is obtained from the MCCB manufacturer. Let through energy is useful in sizing downstream cables.
Is This Answer Correct ? | 25 Yes | 2 No |
Answer / rohit
Let through energy of MCCB or Fuse is the energy required
for the operation of magnetic coil (in case of MCCB) or
fusing the metallic wire of fuse.
this shall be as small as possible for the protection of
downstream electrical equipment such as cables, motors etc.
Is This Answer Correct ? | 8 Yes | 23 No |
what is sevice settings for mccb?How can be it setted?
why using earth testing rod 15 meter 30 meter long to each other?
How to take Transformer oil Break down voltage test?
why is the core of the underground cable is spiral in shape instead of straight?
WHAT IS AIR GAP VALUE IN MM FOR A 11KV BUSHING OF 11KV/440V DISTRIBUTION TRANSFORMER. AND AIR GAP VALUE OF 25 KV BUSHING OF AT TRANSFORMER OF 25 KV TRACTION. WHAT IS THE CALCULATION FOR THE AIR GAP PERMITTED FOR BUSHINGS AT DIFFERENT VOLTAGES.
Explain the different regions in frequency response?
why can't we increase the voltage by increasing the field voltage in order to get higher voltage.so that we can eliminate step up transformer
I want to know if it is possible to use Variable Frequency Drive to reduce the current required for starting a motor?
what is meaning of sympathetic tripping with respect to relays and give the values for current carrying capacities for copper and aluminium cables from 16sq mm to 500sq mm
what is the earth resistance
How to calculate motor current for 3 ph & 1 Ph motor from KW rating?
Please help me.What are the difference between two wire, 3wire, and 4 wire in electric meter?