Справочник Пользователя для Pelco MC3600
Pelco Manual C1982M-A (12/00)
[ 9 ]
Table A. Recommended Wire Gauge and Wiring Distances
The following are the recommended maximum distances for 24 VAC applications and are calculated
with a 10-percent voltage drop. (Ten percent is generally the maximum allowable voltage drop for
AC-powered devices.)
with a 10-percent voltage drop. (Ten percent is generally the maximum allowable voltage drop for
AC-powered devices.)
Wire Gauge
Total
20
18
16
14
12
10
vA
(0.5 mm
2
)
(1.0 mm
2
)
(1.5 mm
2
)
(2.5 mm
2
)
(4.0 mm
2
)
(6.0 mm
2
)
10
283
451
716
1142
1811
2880
(86)
(137)
(218)
(348)
(551)
(877)
EXAMPLE: A camera that requires 10 vA and is installed 283 feet (86 m) from the transformer
would require a minimum wire gauge of 20 AWG.
would require a minimum wire gauge of 20 AWG.
NOTE: Distances are calculated in feet; values in parentheses are meters.
Table B. Video Coaxial Cable Requirements
Cable Type*
Maximum Distance
RG59/U
750 ft (229 m)
RG6/U
1,000 ft (305 m)
RG11/U
1,500 ft (457 m)
* Minimum cable requirements:
75 ohms impedance
All-copper center conductor
All-copper braided shield with 95% braid coverage
All-copper center conductor
All-copper braided shield with 95% braid coverage