Chapter 1
Introduction
7
Power requirements
All CyberDome II domes require a 24 VAC power supply to operate the domes’ PTZ, camera, and heater/
blower, if present. The startup and running power requirements vary depending on the model (
Table 3
).
Power cable size and length requirements
Using the proper gauge of power cable will ensure proper operation and avoid voltage drops. See
Table 4
for the
recommended cable gauge for varying maximum cable lengths and power draws.
CAUTION:
Use only a Class 2 power supply of the required output rating as listed on individual units and specified.
Table 3.
Power requirements at 24 VAC (±4 VAC) operating voltage
Model
Start-up power
Running power
Minimum power source to use
Dome with fan
25 VA
20 VA
40 VA
Dome with 12 W heater/fan (x2)
93 VA
45 VA
56 VA
Rugged and HD dome with 23 W heater/fan (x2)
153 VA
66 VA
100 VA
WARNING:
Be aware that the power requirements for CyberDome II and CyberDome are different, which may require
new cabling when replacing CyberDomes with CyberDome II domes.
Table 4.
Recommended power cable gauges based on maximum lengths for an operating voltage of 24 VAC (±4 VAC)
Wire gauge
Domes with fan
(20 VA)
Domes with
12 W heater/blower (x2)
(45 VA)
HD domes with
23 W heater/fan (x2)
(66 VA)
AWG
mm2
feet
meters
feet
meters
feet
meters
10
2.60
1569
478
784
238
490
149
12
2.05
988
301
494
150
309
94
14
1.62
620
188
310
94
194
59
16
1.29
391
119
196
59
122
37
18
1.02
246
74
123
37
77
23
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