Rabbani, I had the same issues as you. Where I live in E london is semi industrial with motors and transformers in nearby plant, cellphone aerials and internet booster stations, and broadband on c24/7 in every apartment around me.
When I ran my Burmester conditioner, the realtime voltage readout never showed the correct 230v, no, it fluctuated btwn 210v-250v ie +/-15%, moment to moment. From what I gather the psus of delicate audio equipment can't cope with such swings.
When I decided to move to 4kVA balanced power I scrapped the Burmester, but for fun put it in series after the new transformer. The realtime voltage now never fluctuated more than 227v-233v ie +/-1.5%, and the system REALLY benefits. Balanced plus conditioner sounds no good, so getting rid of the conditioner totally, and relying on balanced is where I am at present.
It has been a total revelation, the improvements wrought by the Burmester maintained ie delicacy and detail, but with none of the disadvantages ie softened dynamics.
I'm using a cheap, industrial grade, non audiophile 4kVA unit sourced in Essex, England called Airlink, at 10% of the cost of my Burmester.