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9 Technical support
To get technical support for the design of video surveillance systems, operation
and adjustment of equipment:
Email at
All technical documents are available at:
https://tfortis.com/support/dokumentaciya-na-produkciyu/
Schedule
Power consumption calculation
Power consumption of TFortis PSW switch is calculated by the following formula
)
(
TP
TH
CAM
SW
P
P
P
P
P
SW
P
For the switch itself power consumption is not more than 5W.
CAM
P
Power consumption of video camera.
TH
P
Power consumption of the heater of the thermal housing taking into
account losses in twisted pair. Not more than 12W.
TP
P
losses in twisted pair when supplying power to the video camera
PSU efficiency of TFortis PSW (at least 85%)
Note 1
For some video cameras the manufacturer specifies PoE rating but not power. In
this case, to determine
CAM
P
, follow the table below.
Energy class
Max power, W
Class 0 and Class 3
13
Class 1
3.84
Class 2
6.49
