New cable line or overhead cable hybrid line voltage shock experiment how to do
[Cable ZR-YJY-1] indicates a flame-retardant cross-linked polyethylene insulation, polyethylene sheath, ground voltage of 0.6KV, each box minus the voltage of 1KV cable. . ZR - that combustion characteristics, combustion characteristics of flame retardant (ZR, also divided into ABC three, such as ZB), fire (NH, also divided into ABC three, such as NA), halogen-free (W), low smoke Y is the cross-linked polyethylene (XLPE), V is the polyvinyl chloride (PVC); . Y is the material of the insulating material, The standard format should be written 0.6 / 1KV, 0.6KV that the conductor of the "ground" voltage, 1KV that the conductor of the "phase" between the voltage.
ZR-YIV-1 is a cable rated voltage of 1 kV flame retardant XLPE insulated PVC sheathed power cable, or ZR-YJV-0.6 / 1KV; the maximum voltage of 1.2KV
We now say that the bridge and trunking, in fact, called "bridge". The bridge should be called a "ladder-type bridge", and the trunking should be called a "trough-type bridge". "Bridge" of the application, not in accordance with the strong, weak distinction, but in accordance with the laying of cable specifications and the number of distinction. "Ladder frame" is mainly used to support large-size cable. Such as the power of large-size power cables, mainly erected in the distribution room, the power cable into the building of the basement corridor and strong electric shaft. Weak electricity is mainly used for all kinds of large engine room, such as telephone office room, television center room, large computer network room and so on. "Trough bridge" is mainly used for laying a large number of small-size cable (the number of too few to take the tube). Strong electric power, such as the larger number of lighting lines, small motors, actuators of the power supply cable. Weak cable types are more, the network cable, audio lines, video lines, control lines, and so on ... .... Of course, with the "trough bridge" on the weak system is good, which is the trunking is closed, you can play a better role in shielding, improve anti-interference ability, so that the weak system work more stable.
