Setting up an uninterrupted power supply for IP-video surveillance system

5th of January 2018
Setting up an uninterrupted power supply for IP-video surveillance system
One of the main requirements of the customer when designing video surveillance is the uninterrupted system operation. Even with the loss of mains voltage, it must be provided guaranteed system operation over set time during which the service personnel will react to the accident and take appropriate actions. This requirement seriously complicates the task, especially when video cameras are installed outside and there is no possibility to place switches in the heated premises.
 
Generic solution
 
 
 
The task is solved in the simplest way by using TFortis equipment. Since all TFortis PSW switches are designed to power PoE video cameras, then it remains to decide how to ensure the uninterrupted operation of the switch. This will require simple uninterruptible power supplies. It is important to note that such uninterruptible power supplies are not designed for operation at extremely low and extremely hot temperatures, so they should be placed at appropriate conditions. Then the power cable must be laid from them to TFortis PSW.
 
 
In order to determine the required capacity of the UPS, it is necessary to know the real power consumption of the switch. How to calculate the power is described in FAQ.
Using a separate uninterruptible power supply and laying a separate cable from it is not always convenient. For such cases, it is proposed to use a switch with an integrated uninterruptible device – TFortis PSW-2G4F-UPS.
 
Solutions based on PSW-2G4F-UPS

 

Inside the device, there are accumulator batteries, the capacity of which is sufficient for the system operation over a long period of time. Operation time depends on several factors. How to calculate the exact time of operation see here.
An important advantage of the TFortis PSW-2G4F-UPS is that when switching to battery power, the switch sends an alarm signal to the operator panel.
Another equally important advantage is the resistance of the unit to network overvoltages of 380V, caused, as a rule, by the loss of zero. When this voltage is applied, the device will switch to battery power and send an alarm signal to the operator panel.
 
Strengths
    1. No external uninterruptible device required 
    2. In the case of switching to the battery, an alarm is sent to the operator panel 
    3. The device is resistant to overvoltages (380V)
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