approx. 1000 volts
It's the voltage: HT high voltage LT low voltage Tension = voltage (French?)
ht cable that means voltage level is high , it is obvious that power is going to remain same ,so if voltage rises ,current has to be lowered .since current level is less in ht cable therefore size (dia) is less compared to l.t cable , (p=v.i),lt cable current rating is more and voltage rating is less
high voltage breaking capacity
A 'bushing' is a tubular insulator used to insulate a conductor that passes, for example, from the inside of a transformer or circuit breaker to the outside, enabling the internal components to be connected to external supply lines.High-voltage (or 'high tension') bushings have thicker walls and are longer than low-voltage bushings, as they have to withstand higher voltages.
high voltage breaking capacity
min 18 mtr tower used or ground clearance maintain as IE rule for 220kv transmission line Rakesh vishwakarma
High Tension transformer means (HT) high voltage transformer.
that main resign is high voltage is voltage value is high that same time current value is very low. easy to transmission to long distance consumer(HT required consumer) end we have not voltage loss and current also and conductor cost is reduced that is conductor thickness low ,so current level is low
because our system form factor is 1.1
HT metering Kiosk is one which has to install between DP structure and HT panel if the distance between them was more than 15 mtrs to reduce voltage drop........
Because the current is smal , the votage > current x ressistance willbe small and therefore will be only a smal percentage of the ht.
Bcoz, corona effect is only possible in high voltage AC supply due to the frequency. That is, the frequency and the HT voltage causes the arc b/w 2 conductors.so , here the air is act as the arc transmitting medium.we called it as Corona. It is highly impossible in DC bcoz of no frequency.