Answer Posted / hm

Power factor improving devices:
1. capacitor banks
2. synchronous condensers
3. phase advancers etc.

synchronous condensers are used in industries but for low
power customers capacitor banks are useful. but only
disadvantage is that if supply voltage does not remain
constant, reactive power generation by capacitor varies so
power factor cant remain at 98%, it fluctuates.

so don't install rated capacitor banks directly,add a
voltage regulator circuit to maintain constant voltage or
better to use APFC.

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