Dahua SD6C230U-HNI Installation Manual

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Dahua SD6C230U-HNI Installation Manual Manual pdf 35 page image

289 APPENDIX Ⅲ THE RELATIONSHIP BETWEEN AC 24VCABLE DIAMETER AND TRANSMISSION DISTANCEIt is the recommended max transmission distance when the cable diameter is fixed and the AC24V power consumption is below 10%. (For the AC power supply devices, the max allowedvoltage loss rate is 10%. For example, a device with rated power 20W, installed 141 feet (42m)away from the transformer, the needed minimum cable diameter is 0.8000mm).mmFeet（m）w0.8000 1.000 1.250 2.0005 488.52（148.90）763.31（232.66）1192.67（363.53）3053.25（930.63）10 244.26（74.45）381.66（116.33）596.34（181.76）1526.62（465.31）15 162.84（49.63）254.44（77.55）397.56（121.18）1017.75（310.21）20 122.13（37.23）190.83（58.16）298.17（90.88）763.31（232.66）25 97.70（29.78）152.66（46.53）238.53（72.71）610.65（186.13）30 81.42（24.82）127.22（38.78）198.78（60.59）508.87（155.10）35 69.79（21.27）109.04（33.24）170.38（51.93）436.18（132.95）40 61.06（18.61）95.41（29.08）149.08（45.44）381.66（116.33）45 54.28（16.54）84.81（25.85）132.52（40.39）339.25（103.40）50 48.85（14.89）76.33（23.27）119.27（36.35）305.32（93.06）55 44.41（13.54）69.39（21.15）108.42（33.05）277.57（84.60）60 40.71（12.41）63.61（19.39）99.39（30.29）254.44（77.55）65 37.58（11.45）58.72（17.90）91.74（27.96）234.87（71.59）70 34.89（10.64）54.52（16.62）85.19（25.97）218.09（66.47）75 32.57（9.93）50.89（15.51）79.51（24.24）203.55（62.04）80 30.53（9.31）47.71（14.54）74.54（22.72）190.83（58.16）85 28.74（8.76）44.90（13.69）70.16（21.38）179.60（54.74）90 27.14（8.27）42.41（12.93）66.26（20.20）169.62（51.70）95 25.71（7.84）40.17（12.25）62.77（19.13）160.70（48.98）100 24.43（7.45）38.17（11.63）59.63（18.18）152.66（46.53）

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