Answer Posted / kunal singh dabi

For LT cable

1. Use : Up to 690V

2. Insulation : PVC
3. Core(Neutral) : Yes
4. Insulation Grading : 1100 V

For HT cable

1. Use : Above 690
2. Insulation : XLPE
3. Core(Neutral) : No
4. Insulation Grading : Above 3.3kV, 11KV..etc

( Please note that now 690 V using in VFD application with
LV cable and 440 V for DOT motor starter)

for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?

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Mention how NPN and PNP transistor works?

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