What is the price of cable 3 * 2.5 + 1?
When used as a voice system termination, it should all be dubbed 5 pairs of connection blocks, so that 100 pairs / 5 pairs = 20 That is to say to do the voice system, only 20 pairs of 5 pairs of the connection block can be 100 pairs of 110 patch panels all play full That is, 100 pairs of patch panels can be terminated 100 voice points Note: CommScope indoor large number of cables generally 25 pairs, 50 pairs, 100 pairs of these three When used as a data system termination, it should be equipped with 20 pairs of 4 pairs of connection blocks, and 4 pairs of 5 pairs of connection blocks In this case, 20 * 4 pairs + 4 * 5 pairs = 100 pairs, and the total number of connected blocks 24 That is, every 100 pairs of 110 patch panels can be terminated 24 data points In summary, when it is used for different systems of transmission, the connection block configuration is also different And its configuration is more flexible, including but not limited to the above two
This is the middle school physics it The birds will short the wires between the feet, but the distance between the feet is too small, the voltage is small, the current flowing through the bird body is small; but if it is the distance between the two people as long as possible hanging on the wire , Maybe electric shock. I have just learned to trouble points, thank you
Cross-sectional area * length * density = mass such as: 1 m YJV-1KV-3 * 90 cable 3 * 90 * 1 * 0.0089 = 2.403KG
3 refers to the three-phase, 2.5 refers to the cable cross-section, plus 1 is used to ground or zero
