the processing of three phase distribution network voltage supply network (110 kV or, for example, consumers 275 kV) and a main system (for example, more than 230 v or 110 v) between the intermediate voltage (for example, 11kV or 33kV) in action. the signal system of the signal line in order to kHz welcomed ten or one hundred kHz's frequency is the use of a signal, the signal is guided to the network connection. the signal of different characteristics in the different phase of coupling, cross coupling between the phase of the signal detector is coupled to the phase relationship between the different points of the system in the detection of a signal strong enough to provide a phase the system can be made.
展开▼
