UPS/Power conditioner for HIFI systems?

aeroash

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Yes it has an isolation transformer.
I'm not able to find this information, can you please point me to it.

This device is rated at 63A. This is about 15KW at 240V.
I'll be surprised if an isolation transformer found its way in a tiny 4pole MCB package.
 

lingamkrishnan

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hello :)
Yes it has an isolation transformer.
Just to be on safer side and also on suggestion of other expert FMs, I am getting this device installed at Meter level for Over/Under Voltage , over current , surge and leakage protection.
oh..ok thanks for the update.

Please let me know how is it performing? i will also plan to install.
 

Winter Green

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Surges are classified into two - a Switching Impulse from the network that has a rise time of 250 microseconds and a tail of 2500 microseconds. These are important above 220kV.

Lightning Impulse are very fast 1.2 microseconds rise time and a tail of 50 microseconds. These are the ones that affect us consumers. They can strike the lies supplying our houses and that's it.

As you wrote nothing is better than complete disconnection.

The other kind is surge for common folks but are swells or spikes caused by faults in power systems or light loaded transformers with high tap setting etc. For these a properly selected MOV should be good enough.

I totally agree, nothing better than disconnecting everything when we can expect a lightning strike. In my wife's house in Chennai, just about EVERYTHING was burnt (the ones that were switched off, but plugged in as well). Wires, Terminals, pretty much everything had to be redone.

Their house is surround by trees and plants, with a garden in front and large trees at the back. They connected lightning power to the house I think :-D.

They still have not installed a lightning arrestor.
 

Subbu68

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I totally agree, nothing better than disconnecting everything when we can expect a lightning strike. In my wife's house in Chennai, just about EVERYTHING was burnt (the ones that were switched off, but plugged in as well). Wires, Terminals, pretty much everything had to be redone.

Their house is surround by trees and plants, with a garden in front and large trees at the back. They connected lightning power to the house I think :-D.

They still have not installed a lightning arrestor.
Can't say if the trees were the reason. Most probably it is the power line that connected the house to the network.

Trees generally burn down or break into splinter if lightning passes through them. And trees taller than the house in a way protect the house since lightning will strike the tallest object as a leader will emanate from it to connect earth to the cloud.
 

Winter Green

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Can't say if the trees were the reason. Most probably it is the power line that connected the house to the network.

Trees generally burn down or break into splinter if lightning passes through them. And trees taller than the house in a way protect the house since lightning will strike the tallest object as a leader will emanate from it to connect earth to the cloud.

My suspicion with the trees was because they were all touching the house pretty much on all sides + rain for a better connection :D.

I live in a rented-house near my wife's house, and there I it is a different problem. When the apartment was constructed, it was receiving only 92V (nighty two AC volts :D). After a ton of complaints, follow-ups and escalations they got a transformer installed very near by. So the problem is high-voltages.

I moved in to the house about 6 months back. My invertor fried. My microwave fried. I tested the voltages using a multimeter (Fluke) and another one which I mounted on plug points and found it was around 245, but it would go as high as 262. When power returns after a power cut... I found it was around 290 (multiple times). Incandescent bulbs would go very bright for a second or two.

So, for now, I have installed basic spike-protection adaptors -> Stabilizers for just about everything except geysers, so for nothing has at least burnt.

For my audio equipment (Topping E30 which is my currently my beginner-DAC -> early 90s Denon Amps -> Technics/Denon 3-way speakers or Polk Audio A3). All connected to APC Back-Up UPS (1500) which is connected to a 3KVA stabilizer which is connected to the mains. This I did because the fluctuations were making my APC UPS work like a percussion instrument and I will it will fail soon. So far this is is good.

Later, When I move into another house where I will permanently live, I will set up everything to the best/right way possible, with the knowledge I gain from the forum here etc. It is only after that will I upgrade my Audio equipment.

I also visit bangalore every other month and live there for a week or so. There it is a different story, the line from the post to the house is so badly done. It gets disconnected often, and the fluctuations are very bad. The lights flicker. We complained so many times, they would just come 'twist the wires are bit', tap the fuse a bit and would go. They have done this 3 times so far and not ready to fix it correctly. Another time, the earth and live wires somehow got married, and every body in the building had fun experiencing electricity touching anything connected to the wall socket. The electrician who came to fix a got a big shock touching the main board which is made of metal.
So, no hope in fixing things in that house, and will move to some other place in some time.
 
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