The LFS-200-3F network interference suppression filter is intended for use to protect information processed by technical means and systems and containing information constituting a state secret, and other restricted access information from leakage through channels of side electromagnetic interference on power supply lines with a voltage of 380 V and a frequency of 50 Hz. The LFS-200-3F product is a passive technical means of protecting information from leakage due to side electromagnetic interference on power supply lines.
The LFS-200-3F product is intended for installation in the power supply circuit of a group of technical means or an object as a whole, in input and distribution devices.
The product "LFS-200-3F" meets the requirements of the document "Requirements for passive means of information protection from side electromagnetic interference on power lines" (FSTEC of Russia, 2015) for passive technical means of information protection of protection class 2.
Technical specifications:
Nominal voltage of the protected power line - 380 V
Number of phases of the protected power line - 3
Maximum current value at which the operation of the product is allowed - 200 A
Overall dimensions - no more than 1080x300x135 mm
Weight - no more than 27 kg
Operating mode - around the clock
Protection of the 220/380 V network
AC networks contain a double danger. Firstly, this is the leakage of acoustic information through the AC network (220 V). Secondly, the threat of leakage of information signals from office equipment. There are passive and active methods of protecting the AC network (220 V) from unauthorized data retrieval. Passive protection of the 220 V network consists of using network noise suppression filters. Such filters do not allow information signals that occur during the operation of office equipment. Moreover, a correctly installed filter also protects office equipment from the harmful effects of external interference. It should be taken into account that high-quality grounding is necessary for the effective operation of noise suppression filters.
Active methods of protecting the AC network (220 V) include methods that involve the formation of a noise signal by special generators that exceeds the level of signals from information retrieval devices or information signals.