In India IS specifications are followed which has BS
standard as base.
Normally AC 50 V - 1000V volts are considered LT .
1kV to 66 kV is considered HT and
Above 66 kV is EHT
Voltages below 50 volts is considered Extra low tension
It depands on the system. 433V (Phase to Phase) from
transformer 11000/433V is LT voltage and 11000V(phase to
phase) from 33KV/11KV to transformer 11000/433V is HT
voltage whereas 33KV is EHT voltage level.
If two hack saw blades, seperated by 1mm thick paper,are
connected across 230volts, and immersed in water,then they
start getting heat. This is fact,i dont know how they get
heated.Blades are not directly connected together.
Please if anybody knows the fact ,revert back to me
10Hp, 3-phase, 415v, 50Hz induction motor.
The above motor is to run on Star-Delta connection, so how
do i make following hardware selection
1) MCB, 2) Contactor, 3) Wire Gage (Depending on P-P current
or Line Current), 4) OLR,
Please tell in detail how to do the above, so as to get the
ans. of it even if the Hp rating changes.
Which UPS (inverter) is better and why ?
12 V inverter and 24 V (two 12 V batteries in series)
inverter which is better .........
which has the longer backup
which has the greater charging time
which has the greater discharging time