Help Need - Solution to intermediate power cuts

[anishasok]

Hi,

After waiting for a fortnight, I finally got my Marantz 6007 delivered by Overnite (read Fortnite) express. Now because of frequent power cuts in Hyderabad, I am in a dilemma. Though we have generator backup for our apartments, there will be break of 30 seconds to 1 minute and sometimes more before the power comes back. Also sometimes the voltage is very low. So I was thinking of using an invertor or UPS (2500VA) plus a voltage stabilizer for connecting the AVR. But I saw a big notice in the carton of Marantz mentioning "warranty void if used on UPS / invertor power". So I am a bit concerned and confused what to do now. I am not very much worried about warranty and things like that.

But what is the issue if I use it with a proper sinewave invertor/UPS? If I dont use a UPS or Invertor what can be the impact on the AVR?

Please help me with your expertise in these matters gained over years/experience.

Thanks in advance,
Anish

 

[anishasok]

As read in another forum (a post by gvenu), I am planning to go ahead with a 2KVA SRC series UPS from APC as protection. Though I am unable to figure out why Marantz came with such a disclosure though.

 

[Raghav_K]

And how exactly do they find out if it was used in ups power.....

 

[jagdish_p]

Hi,

After waiting for a fortnight, I finally got my Marantz 6007 delivered by Overnite (read Fortnite) express. Now because of frequent power cuts in Hyderabad, I am in a dilemma. Though we have generator backup for our apartments, there will be break of 30 seconds to 1 minute and sometimes more before the power comes back. Also sometimes the voltage is very low. So I was thinking of using an invertor or UPS (2500VA) plus a voltage stabilizer for connecting the AVR. But I saw a big notice in the carton of Marantz mentioning "warranty void if used on UPS / invertor power". So I am a bit concerned and confused what to do now. I am not very much worried about warranty and things like that.

But what is the issue if I use it with a proper sinewave invertor/UPS? If I dont use a UPS or Invertor what can be the impact on the AVR?

Please help me with your expertise in these matters gained over years/experience.

Thanks in advance,
Anish

Some of the Invertors do not have a full sine wave out put and instead have a square wave output which damages the electronics.

You should be OK with using a UPS with full sine wave output. Typically the changeover time is higher in Inverter compared to an UPS. However both are in milliseconds -- a few 100 milli seconds for inverter vs less then 100 milli seconds for UPS. However I know some people who are able to run desktops on invertors with out a break. Not sure if the same applies to AVRs.

 

[anishasok]

Thanks Jagadish. By the way, after reading some more expert visions (and horrors they have faced) am planning to add a 3KV servo stabilizer for the HT room along with the UPS. So mains -> Servo Stabilzer -> UPS is what i am thinking. Please lemme know your thoughts on the same.

Cheers

 

[anishasok]

And how exactly do they find out if it was used in ups power.....

I have least idea buddy

 

[jagdish_p]

Thanks Jagadish. By the way, after reading some more expert visions (and horrors they have faced) am planning to add a 3KV servo stabilizer for the HT room along with the UPS. So mains -> Servo Stabilzer -> UPS is what i am thinking. Please lemme know your thoughts on the same.

Cheers

A servo is an overkill . In any case ensure that it has built in spike buster and over voltage cut off. Not sure if servos have these protections built in.

I use a stablizer from v guard - digital 200 for all my HT equipment. In addition I have APC ups 600 just to power my players and STB. The ups ensures that I do not have to restart the players and scroll to resume position. Our genset kicks in with in two minutes. The ups is connected to the stablizer

 

[anishasok]

Sure. Servo might be an overkill, but after seeing some frightening discussions, I opted for this option as I wanted peace of mind while watching movies or listening music without worrying about our frequent powercuts and crazy fluctuations. The forum link below for a reference.

http://www.hifivision.com/audio-video-accessories/14627-digital-stabilizers-horrors-our-apartment.html

I've checked for one company's (Navreeti Group) and these protections are there (over/under voltage cut-off, short-circuit / overload etc.

Here you can get all products of Servo Voltage Stabilizers and Transformers

Another one I checked is Deltek Powerline's servo stabilizer. Don't have the details yet. Planning to go to their shop tomorrow.

Cheers

 

[jagdish_p]

Ok good decision .
Just ensure that you have good earthing - I think the surge protection needs it.

 

[anishasok]

Thanks Jagadish. Sure I'll check the earthing and hopefully should be good as the apartment is from a reputed builder. If not, I'll have tough time chasing those dudes . I stay at 9th Floor and so doing it on my own is not possible