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SEL SP-44 - active protection system for electric circuit and ground

The device is a technical mean for active information protection for the top-secret category objects. The device provides protection of intercommunication and data transmitting systems that uses single-phase 220V with ground net as an information transmitting channel, from any type of interception devices by generating a wide-range digital noise. SEL SP-44 prevents from information leakage through the power-supply and ground lines providing a masking noise there in the frequency range  of 0.01 - 300 MHz. It also suppresses wiretaps which are using these lines as a data-transmitting channel.
 
ADVANTAGES:
  • does not influence PC performance and consumer electronics functioning.
  • not sensitive to peaks of net voltage up to 1kV.
  • does not interfere with radio reception.
 
Visual differences between unprotected and protected 220 V electric circuit from information leakage. Protection is done by Active Electric Circuit Noise Generator SEL SP-44. The measurement was done by Multi-purpose Search Device ST-031M "Piranha".
 
                                    Without SEL SP-44                                     With SEL SP-44
                     Without_SEL_SP-44.gif        With_SEL_SP-44.gif
                                  Channel of data leakage in 220V circuit                          Protected 220V electric circuit channel
 
FEATURES:
• Main components of the device - noise generators, noise level controllers and output amplifiers - are fully digital devices. This allows, while maintaining a high quality factor of the noise signal, completely eliminate the posibility of information leakage due to self-excitation, parasitic generation and modulation of dangerous voice signal and electric signals, caused by  the electro-acoustic convertors in the circuit elements, and their leakage through the supply lines.
• Uncorrelated noise generators  for the circuits  "phase" - "earth" and "zero" - "earth" allows to eliminate the possibility of informative signal interception for the anti-phase and in-phase connection schemes.
• The presence of independent noise level controllers for the low and high frequency bands allows to optimize the interference spectrum for electromagnetic compatibility, while maintaining sufficient efficiency of masking noise.
• The device has a high-class resistance to impulse interference and allows continuous operation under the conditions equivalent to a short circuit. Application of core output amplifiers significantly increases the efficiency, reliability and stability of the device parameters, allows it to operate in more severe weather conditions.
• During operation the unit constantly performs a self-test, and in case of failure gives sound and light signal.
• Switching on the device can be done by the button on the control panel of the device or by remote control (optional).
Characteristics:
Noise frequency range 0.01 - 300 MHz
Lines protected power supply, ground
Spectral-noise density (at 50 Ohm load relatively 1 µV/ √ kHz) in the frequency bands, not less than:  
0.01 - 1 MHz 90 dB
1 - 10 MHz 70 dB
10 - 100 MHz 50 dB
100 - 300 MHz 35 dB
Noise level adjustment range in the frequency bands, not less than:  
0.01 - 0.5 MHz 20 dB
5 - 300 MHz 12 dB
Quantity of independent noise signal channels ¹ 2
Noise quality factor not less than 0,9
Leakage of the current through ground line not more than 1 mA
Noise actuation control manual, remote, RS-485
Operation conditions:  
– operating temperature range from 0 up to+50 °C
– relative humidity at + 25 °C up to 85%
– atmospheric pressure 750 ± 40 mm Hg
Power supply:  
– AC mains 220 V ± 10% 50 Hz
– power consumption not more than 12 W
Mass-volume:  
– dimensions 172 х 172 х 42 mm
– weight not more than 1.5 kg
¹ – for phase-to-ground and zero-to-ground circuits  

Holds the certificates of: Federal Service for Technical and Export Control of Russia (FSTEC) and Sanitary and epidemiological.

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CONTACTS

Address: Tilzes str. 38, Klaipeda 91112, Lithuania
Phone: +370 655 08288, +370 655 08286
Fax: +370 46 412231
E-mail: info@selcomsecurity.com

                   DEALERS

                   Latin America
Company name: Winsys Security C.A. 
Website: http://winsys-selcom.com/
E-mail:
winsys416@gmail.com 
Phone: +58 212 5763146; +58 412 3280884
       
                        Canada
Company name: NorthReliance Technologies
Address: 92 Caplan Ave. Suite 309
              Barrie, ON, L4N 9J2, Canada.
Tel.:+14169874168
Fax: +18668000565

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