Havent gotten resolved yet..
But has improved for better. I've bought a 2kva Servo stab from a local provider named 'Aarecc UPS & Power'.
One Mr Ramesh visited me and checked my home wiring and has created a custom built Servo stab for 2kva with an working Input voltage range between 140v-270v, for rs. 11.3k (gst inclusive).
One good thing is he is in constant touch with me and even happily agreed to replace my 1st servo with a newer one, with updated digital circuitry, since I was facing some issues with the first one (the first stab doesnt output the voltage to 230v, if the mains input dips below 150v.)
I made a call and told the issue and he came to my home again and taken it to his place and came back in a day's time with and updated internals and handed it to me for testing. He asked me to test it for a couple of days and he was open for the feedback.
While testing I've found it withstands if my mains input dips down below 145v (not frequent, but happens atleast once in a day).
Functionally, the operation is much better now, say - AVR restarts once in every 3-4 hrs or so when compared to restarting in 4-5 per hour earlier, which was still great!
That aside, the issue havent completely resolved yet. I have applied for a 3-phase connection owing to the overall load factor in my home and also raised a request to install a step up transformer in our area (which is situated in a tail-end section from the main area).
It would take a few months but within that time I would get the 3-phase connection at least in near future where i can connect HT system to the phase having better voltage output, hopefully.
But for now, I have connected not just the AVR but few other devices to the Servo as its a 2kva one (suggested by Ramesh himself)...
So, connections in my custom made servo stab goes like this..
Mains > 2kva Servo stab > Luminous Inverter UPS (powers up only during blackouts) > AVR + 55" QLED TV + 7 led lights + 4 ceiling fans.
Point to note: Even after connecting these many electrical/electronic items to the servo, it works great guns. I've tested with adding all load one by one and still there were no hiccups at all. Now the heavy flickering issue with the home tubelights and the sudden slow/fast movement issues with the fans all are gone!
PS: If you're going for a servo stab i would recommend to get the input voltage range tweaked for the best (as wide as possible) so that it could be better utilized. Also one can add load not just the AVR alone, adding to the longevity of the other devices like fans and lights.
1KVA = 800W or 0.8KW | this calculation could be useful to add in more load to the servo stab, depending upon its kva.
Lastly, the workmanship and the super friendly attitude shown by Mr. Ramesh are commendable!
Aarecc Power:
https://aareccups.com/index.php
Ramesh: 9865011733
Whatsapp: 9894633338