400V power grid is to support the installation of the earth, with the aging power grid and environmental changes in the power network will continue to have access location, then the natural place than the place much more personal then an electric shock, with different line network at the same time will be grounded Power leakage caused by a short circuit or, in time to discover and then rule out the locations of great importance

network to monitor the insulation of the task is to detect power grid in a timely manner (n, a, b, c four-lane) on the insulation to the situation, issued by the grounding grid signals, ground control when the severe power failure, then off locations in order to prompt or force Tube staff in time rule out the electricity grid take place in order to achieve and maintain a network of good insulation. This is the natural wear and tear of the grid smaller, safer and more stable because the monitor does not allow any serious power grid then place presence, when the occasional ground (including electric shock) point, Xing Bucheng large current leakage.
shows that the network to monitor the role of the insulation goal is not simply to protect, but to maintain a network of insulation, insulation to the net to protect the purpose of which is comfortable A.
network to the advanced nature of the insulating Monitor is that, when it sent the signal power or control, not the network have taken place in the leakage accident took place but the location of access. It prompted officers to control power consumption has not ruled out the damage caused by the fault, but merely as the potential of the power grid can take place only.
shows that the network to monitor the insulation has broken through the "electric shock gates out" the old concept of leakage protection, has been formed to maintain the power grid for the good of the insulation to the basic objectives at the same time in order to "escape an electric shock" to address the effects of leakage protector To resolve the power of the new security concept. [Comment]