Interlogix UltraView PTZ, Руководство по установке

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Chapter 1
Introduction
5
Power requirements
Every UltraView PTZ dome requires a 24 VAC power supply to operate the PTZ, camera, and heater/fan, if
present. The startup and running power requirements vary depending on the model (
Table 2 ).
Cable management
Follow all local codes for cable management. As a general rule, you can fill a cable conduit to a maximum of
60% of its capacity. You must maintain 40% free space. A variety of factors will determine how many cables
you can run into the dome. Capacity limitations include:
• number of cables
• size of the cables
• use of single-conductor or multiple-conductor cable
• use of a junction box
Figure 4 provides an illustration of the cable capacity of three typical applications. It is important to note that
all cables of the same gauge are not of the same diameter. Manufacturer, shielding, and rating affect the actual
diameter of cables of the same gauge. Interlogix leaves the selection of the appropriate cable to the discretion
of the installer who is working with the local codes of the installation site.
Table 2. Power requirements at 24 VAC (±4 VAC) operating voltage
Model
Startup
power
Running
power
Minimum power source
to use
Dome with fan 30 VA 25 VA 40 VA
Dome with 12 W heater/fan (×2) 93 VA 35 to 55 VA 56 VA
Rugged and HD dome with 23 W heater/fan (×2) 153 VA 75 VA 100 VA
CAUTION: Use only a Class 2 power supply of the required output rating as listed on individual units and
specified.