CCTV recorders and IP cameras should be put on UPS so that the Recorders and/or cameras with continuously updated storage are not abruptly interrupted while doing this task resulting in data corruption (reformatting disks may be required which will cause all data loss) and neither we loose valuable seconds or minutes of surveillance. However the rest of the logic has nothing to with CCTV and more with power plant setups.
UPS is only an emergency source used to manage transition between primary sources (utility company supplied power) and secondary backup source (Diesel Generator, On-Grid Solar, Inverter, etc.) . It is not a secondary backup source. Typically switchover from primary to backup sources (and vice versa), may take a bigger fraction of a second, a second, few seconds or even up to a minute. This is enough to cause camera and recorder reboot (like they would for a PC) thereby necessitating the use of an emergency backup such as UPS to manage the transition, which is UPS or Inbuilt battery.
In countries with every reliable utility power (rare planned shutdowns, non-existent power shutdowns) both emergency power and secondary backup power is not required. Otherwise they are. And the matters become serious if these run into 30 minutes or multiple hours in a day frequently (most parts of India for eg., in 2020). Such frequent long duration shutdowns will create a double whammy by impacting the UPS battery life and still run into a shutdown (it does not matter if it happens after 5 minutes or 50 minutes) as long as it still happens. If you try to respond by deploying a UPS of very high capacity, expect to spend unreasonable amounts in both installation and maintenance, and penalties in space. If your secondary backup source is reliable and available, maybe only 5 minutes of UPS backup is required which maybe easier to implement. So focus should be put in integrating a cost-effective and reliable secondary power source.
- Suman Kumar Luthra @ APRC-P3 Telecom Sub-Committee
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