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<blockquote data-quote="Robert Lofgren" data-source="post: 83770" data-attributes="member: 2447">Re: Noise problems in generalI had a similar experience. The company I worked for some years ago installed a computer system at a customer place.Every now and then the system crashed for no apparent reason. The complete system was eventually replaced and it still kept crashing. The customer was quite upset.Some vistits/months later I finally realized what the problem was. The electrical trams (spårvagnar) running throughout the city induced electrical interfeerence throughout the power network but they were the only one affected by this problem... A single ups didn&#039;t work since this was a distributed system throughout the company facilities and the interfeerence found its way into the system somehow.The power company was informed and they fixed it somehow and in the end the customer was happy ever after.Oh, I&#039;ve also had a tt24 dislike a fridge getting power from the same phase in the building...</blockquote>

[QUOTE="Robert Lofgren, post: 83770, member: 2447"] Re: Noise problems in general I had a similar experience. The company I worked for some years ago installed a computer system at a customer place. Every now and then the system crashed for no apparent reason. The complete system was eventually replaced and it still kept crashing. The customer was quite upset. Some vistits/months later I finally realized what the problem was. The electrical trams (spårvagnar) running throughout the city induced electrical interfeerence throughout the power network but they were the only one affected by this problem... A single ups didn't work since this was a distributed system throughout the company facilities and the interfeerence found its way into the system somehow. The power company was informed and they fixed it somehow and in the end the customer was happy ever after. Oh, I've also had a tt24 dislike a fridge getting power from the same phase in the building... [/QUOTE]

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