Without power!
And now?
Don’t forget the emergency power!

Business processes are increasingly dependent on the camera systems in place.
To follow up on alarms or to reconstruct incidents, for example.
But what if the power goes out?
Will all these processes come to a standstill?
Is your organization no longer secure?
Or do you not have to worry at all because you have the necessary uninterruptible power supply (UPS)?
In contrast to burglary, fire alarm and access control systems, the emergency power supply is often forgotten with camera systems .
Depending on the purpose and function of the camera system, this has serious or less serious consequences.
For example, you may use your camera system to conduct live surveillance.
If the camera system fails, the surveillance will cease and you will have to look for an alternative to achieve the same level of security.
Even if camera images are used to verify alarms, the security of your organization can be compromised.
After all, there are no longer any live camera images available for alarm follow-up.
Reconstructing and analysing incidents or tracking down perpetrators becomes difficult without footage.
Failure of the mains voltage, as well as overvoltage due to lightning strikes, can also lead to damage to storage media and electronics in general.
For example, power outages are bad for a hard drive, and they significantly shorten its lifespan.
Overvoltage can cause a chain reaction of damage to the electronic components of all mains-connected equipment.

Which parts of the camera system are connected to UPS?

A camera system consists of various components, all of which are (directly or indirectly) connected to the power grid.
Power outages or overvoltages can affect any of these components.
In order to assess which components should be connected to a UPS, the impact of a power outage or surge on each of these components must be mapped.
Often, this is much more than just the recording equipment and the cameras themselves.
The components in the IT environment, such as switches, routers and servers, should certainly not be overlooked.
An often forgotten part is also the lighting.
If the power goes out in dark rooms, for example, not only do the cameras themselves have to keep functioning, but there must also be enough light on to be able to get good shots.
Alternatively, the cameras themselves have infrared light.
Depending on the system structure, not all individual cameras need to be connected to the UPS, but it is sufficient to connect the switches to the emergency power supply.
In that case, the (LED) infrared illumination of the cameras will also continue to function in the event of a power failure.

Which UPS do I need?

How long a UPS can power the connected components without power depends on:

  • the size of the battery;
  • the power required by connected equipment/components.

To help you determine which model of UPS is needed for your systems, several vendors offer online calculation tools.

How does a UPS work?

A UPS has a 12-volt battery that is fully charged as long as there is power.
In the event of a power failure, the battery will supply power to all connected equipment.
For technicians: the 12 volts (direct) voltage is converted to 230 volts (alternating current).
Almost all UPS models also come with surge protection.
It depends on the size of the battery and the power of the connected equipment how long the UPS can power the connected components without power.
It is important to calculate this in advance, so that you can also think about what to do if the power goes out for longer than the UPS battery can handle.
Some affected system components, such as PC, managed switch, NAS, and recorder, can be set to shut down in a controlled manner after a certain amount of time (after a power failure).
As a result, the risk of data loss is minimal.
An automated warning can also be sent when a predetermined battery capacity is set.
Finally, batteries from a UPS unfortunately don’t last forever either.
They need to be replaced on average every 3 years, just like the batteries of your alarm system.

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Offline or online UPS?

There are basically two types of UPS: offline and online.
In the offline version, the security devices are not connected to the UPS battery by default.
Only in the event of a power failure is the switch to the battery.
This is done within 10 ms, which is fast enough for the connected equipment to continue working.
With an online UPS, the equipment is directly connected to the battery voltage of the UPS.
If the power fails, there is no interruption whatsoever.
After all, the equipment is already connected to the battery voltage.
Fluctuations from the voltage network are also absorbed in this way.
Partly because of this functionality, an online UPS is a bit more expensive than an offline version.

Need advice?

Would you like to know more about emergency power supplies for camera systems?
Then make an appointment with one of our experts.