What is the best surge protector ratings to remove noise from power source?
x3_d_e_s asked:
The generator company suggested that we use a noise suppression device. Surge protectors have an EMF/RFI rating, but some are listed as 150KHz to 100MHz and others are listed as 40 to 80 dB.
This entry was posted
on Thursday, April 9th, 2009 at 12:00 am and is filed under Engineering.
You can follow any responses to this entry through the RSS 2.0 feed.
You can leave a response, or trackback from your own site.
The generator company suggested that we use a noise suppression device. Surge protectors have an EMF/RFI rating, but some are listed as 150KHz to 100MHz and others are listed as 40 to 80 dB.
Which would be better for removing “snow”/interference from the electronic equipment when using a generator? Or what would be recommended rating?
April 12th, 2009 at 7:58 am
You have a couple of concepts confused. The common computer ’surge suppressors’ stop ’surges’ or momentary overvoltages. You also have an issue with conducted emissions or conducted susceptibility. Either the generator is generating power that it should not be generating (specifically, not at the right frequency), or the powered equipment has a crummy power supply that permits whatever is on the power line to pass right into the internal circuitry. Or both.
Whatever you get for filtering will have an insertion loss vs. frequency characteristic. Products for overvoltage surges are rated for their energy dissipation. Various marketing people will dress it up and obfuscate it, especially for retail products.