What is RVVP shielded cable?

RVVP shielded cables are transmission cables that use a metal mesh braid to wrap the signal wires. The braid is usually red copper or tinned copper. The purpose of shielding: shielding is to ensure the transmission performance of the system in an electromagnetic interference environment, where the interference resistance should include two aspects, namely, the ability to resist external electromagnetic interference and the ability of the system itself to radiate electromagnetic interference to the outside. Theoretically speaking, in the cable and connectors on the outside of a layer of metal material shielding layer, can effectively filter out unwanted electromagnetic waves (which is also the vast majority of shielding system used by the method), however, the effective degree of this method in the end how? For the shielding system, a single layer of metal shielding layer is not enough, it is more important that the shielding layer must be completely well grounded, so that the interference current can be effectively channeled into the earth. RVVP shielded cable main technical performance: the finished cable should be subjected to frequency AC voltage test power core for 11.0kv5min; transition resistance: shielding or monitoring layer of the transition resistance should be no more than 3kΩ; combustion test: the cable should be subjected to GB12666.2DZ1 combustion test; partial discharge test: 1.5U0 discharge is not greater than 20PC; dielectric loss angle tangent test: U0 is not greater than 0.035; Impact Voltage Test: 95 ° C, 60KV positive and negative character each 10 times after the cable type of frequency 11KV voltage applied to the cable, 15min; Cable should be able to withstand 3U, 4h frequency voltage test.

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