Fuse For Logitech Z5450

[freedom]

Hi Folks
I got a technical query, cannot see where else to post as there is no section for technical questions on electrical/electronics( if there is mods please move this there)
I got Logitech Z5450 from the US a few years back and was using them with a step down transformer. Just 1-2 times the fuse in the amp blew out, even though i had a surge protector.
Now i have moved to a new location and here the fuse has blown out 2-3 times.
The step down transformer has a rating of 600W and has a fuse of 5 A
The amp has a fuse - Slow Blow T4AL, 125V. Now i tried to rack my brains and figure out what is happening and all i can conclude is that the voltage input maybe about 250-260( as above 260 we have a central cut off) and the transformer is stepping down to 125V above which is blowing off the fuse?
Will putting a normal stabilizer help cause the surge protector i have is also not working in this case ( its rated max at 240V but not a great quality one)
Need someone who has elec fundas intact to guide!!! Also where to get a slow blow fuse T4AL? I saw that i have used F5AL, 250V fuse which blew off.
BTW had called up a couple of vendors for stabilizers and got all weird answers.

 

[baijuxavior]

Better get a step down transformer that provides 110V at 260V input. Also add a cut off relay for high voltage.

 

[Moviela]

Your voltage is too high. I suggest an online UPS to provide 110v power. Go to RS (Radio Spares) India for the fuse. T4AL means a Time delay fuse, 4 amps, Long delay.

The fuse might also open if you are playing at high volume levels, and there is not enough cooling of the Amp.

 

[freedom]

Basically what i need is something that can give 240V max input to my transformer. Now i have a fuse in the transformer, that is 6A. I think i will need something that will blow off if more than 250V comes in, how to do that?
Can i get a step down giving 110 at 260V input? I will never get more than 260V input as there is a cut off above 260V at the junction.
Online UPS: that is way too much to pay, i got an option to buy a Constant Voltage stabilizer at 3,500 but contemplating if that is necessary?
How about putting a belkin surge protector?
OR Will the V Guard Voltage stabilizers not work? I suppose that they will give output to max 240V in case voltage does not go above 260 as input( which in my case will not)
Boy is this confusing

 

[baijuxavior]

Option 1.It is possible to assemble a new step down transformer that can give 110V at 260V input.
Option 2. If you want to use a stabilizer, then buy one that can handle a load of more than 600W which is the wattage of your step down transformer. A vguard digi 200 is recommended.

 

[freedom]

Option 1.It is possible to assemble a new step down transformer that can give 110V at 260V input.
Option 2. If you want to use a stabilizer, then buy one that can handle a load of more than 600W which is the wattage of your step down transformer. A vguard digi 200 is recommended.

Any vendors who can give me the step down transformer?
As for stab- will this not do- vgd or vgsd 100 from v-guard? They can handle 4Amp which means more than 600W at 220v? I guess they will regulate voltage to 230-240 for inputs upto 260( above 260 i do not get)
Even a belkin surge protector is marked at 1500w max(6A) i saw with max 250V. My device was running perfectly well all these years so wondering if need to spend that much now.