3BHL001863P0001 5SDD1060F0001 Surge amplifier

3BHL001863P0001 5SDD1060F0001 Surge amplifier

3BHL001863P0001 5SDD1060F0001 communication module only has a short-distance communication capability, although some companies provide PLC supporting networking module, but the communication distance is also limited to a number of kilometers. The distribution network is characterized by a large number of points, a wide range, therefore, must be used in other ways to extend the communication distance of the PLC. There are many methods, such as telephone modem program, leased line modem program, wireless program, paging station service program, fiber optic program and so on. In the same distribution automation project, a single method or a combination of methods can be used depending on the specific situation.

3BHL001863P0001 5SDD1060F0001 In terms of the four-remote operation of the RTU, since the PLC level as well as the power capacity with the operating equipment can not be exactly the same, coupled with the requirement of electrical isolation, it is necessary to increase the auxiliary potential conversion, power amplification, electrical isolation and other modules and devices.

3BHL001863P0001 5SDD1060F0001 remote control, when the PLC receives a switching command, the path from the output point to the internal power supply is turned on or off, and if the output current from the output point is used directly to operate the switching device, the power is simply not enough. Therefore, the output point of the PLC can be used as an excitation power supply for a low-power relay to control the opening and closing of the normally open or normally closed contacts of the relay, and then the relay to control the operating power supply of the distribution switch of the distribution network, so that the distribution switch is operated, and the line or the distribution equipment is put into operation.