Cell phone blocker is flexible to be moved

Not only will the equipment enclosure (with PEN-line connection) live on the personal insecurity, and can not get to a suitable potential reference point, precision electronic equipment can not be accurate and reliable operation. Therefore, TN-C earthing system is not as intelligent building grounding system. System consists of two grounding system, the first part is a TN-C system, the second part of the TN-S system, the interface in the N line and PE line connection points. The system is generally used in building power substation attracted by the region's place, into the family before the use of TN-C system, into the family to do at the ground repeatedly, into the family after the TN-S system becomes.  cell phone jammer has the aesthetic appearance.TN-C system analysis has been done before. TN-S system is characterized by: the neutral line N and PE protective ground wire into the households in the common ground, you can not be any electrical connections. The system, the neutral line N often charged, protective earth line PE is not the source of electricity. PE cable to connect the equipment enclosure and metal components in the system during normal operation, and always will live, so TN-S earthing system significantly improves the security of human and physical, while if we take a ground wire, have their leads from the grounding point , and select the correct value of grounding resistance of electronic equipment to obtain a common reference point for other potential measures, then the TN-C-S system can be used as an intelligent building grounding system. cell phone jammer has the advantage of convenient use. 3.TN-S system is a TN-S three-phase four-wire plus PE wire grounding system. Typically buildings are equipped with independent variable distribution of the line when using the system. TN-S system is characterized by the neutral line N and the protective earth line PE in addition to the transformer neutral point of common ground, the two lines no longer have any electrical connection. Neutral line N is charged, while the PE line is not live. The grounding system is fully equipped with safe and reliable reference potential. Just like the TN-C-S earthing system, take the same technical measures, TN-S system can be used as intelligent building grounding system. If computers and other electronic equipment without special requirements, generally using this grounding system. 4.TT system commonly referred to as the three-phase four-wire system TT earthing system. The system is commonly used in the building where electricity from the public grid. cell phone blocker is flexible to be moved.  TT system is characterized by the neutral line N and the protective earth line PE is no point electrical connection, the neutral grounding and ground PE wire is separate. The system is in normal operation, regardless of unbalanced three-phase load balancing, charged in the case of the neutral line N, PE line will not be charged. Only single-phase ground fault, due to low sensitivity of protective earthing, fault can not be cut off in time, before the equipment enclosure may be charged. Normal operation of the TT system is similar to TN-S system, the safety of persons and things can get and pass the reference ground potential. With the large capacity of the emergence of leakage protection, the system will be more as intelligent building grounding system. cell phone jammer has little influence on the area beyond the examination room. From the current situation, because the public grid power quality, and difficult to meet the requirements of intelligent devices, so the TT system is rarely used intelligent building.