Data cables to control luminaires a thing of the past with Eaton’s DualGuard-S Central Battery Emergency Lighting system

Ashraf Yehia, Eaton, MEP and HVAC

Eaton has unveiled its Emergency Lighting central battery system for medium to large buildings. 

The DualGuard-S central battery system reliably supplies power for emergency luminaires and can be seamlessly integrated into Eaton’s emergency lighting portfolio comprising safety luminaires, escape sign luminaires, low power supply units and automatic luminaire test systems.


On installation, DualGuard-S utilises Eaton’s patented STAR technology, which allows clients to commission, monitor and set multiple switching modes on the same circuit, so no additional luminaire data cable is required.

The ACU Bus removes the need for duplicate wiring and modules to control Eaton luminaires across multiple systems. With the web controller, any changes can be managed through the software rather than physical cabling changes, so there are savings in cabling costs, and the number of circuits is reduced.

A host of automatic fault detection & monitoring solutions are available including battery string and optional battery block monitoring, with detailed information on the status of each battery block, including temperature and overall battery health.

On set up the system looks for addresses of all luminaires on the system, these can then be named in a logical pattern for the building owner and maintenance team. Any system changes or additions can be easily configured with the auto search function.  All required function and duration tests are automatically scheduled and recorded, simplifying maintenance, service and inspection.

Wireless communication speeds up the setup of the soft addressable sensors, so no need to glue sensors to the batteries and no data line is necessary, making for much simpler and quicker installation.

As well as the standard test and monitoring features you would expect from a central battery system such as automatic log bookkeeping and automated function and duration testing, DualGuard-S also features:
• Battery string monitoring, up to max. 4 battery strings, or with the optional detailed battery block monitoring on each battery block including voltage and temperature.
• Isolation monitoring and phase monitoring with test button.
• Weak battery indication to avoid damage to remaining cells.

DualGuard-S also incorporates addressable charger technology that increases the reliability of the charger and further reduces maintenance costs.
The new range of low power battery block sensors reduce operational complexity through improved monitoring and testing, with the results and messages available via email.

The findings can also be viewed through the TFT display or the VisionGuard visualisation software. This level of early warning helps to keep the system in full health and lowers running costs for building owners.

The system is easy to program and edit, right down to luminaire level remotely via the Web enabled, cybersecure interface or via the intuitive colour touchscreen LED display. 

Maintenance managers can then easily setup access permission via the LED display to prevent unauthorised operation. All essential system information is visible at a glance, via an intuitive menu, available in multiple languages. An integrated web interface is supplied as standard, allowing messages such as power failure, deep discharge protection, charging battery faults, isolation faults, control circuit faults and the device status can be sent to up to 6 email addresses.

"Emergency lighting is present in almost all commercial buildings, which cannot be said for many other technologies, whether it's exit sign luminaires or safety luminaires for illuminating escape routes and other particularly high-risk areas," says Eaton’s Ashraf Yehia, Managing Director Middle East."

"The challenge for modern emergency lighting systems is to safely network all functions of an emergency lighting system in order to process project-specific requirements whilst minimising the cost of installation and setup. Thanks to the new data networking capability of the DualGuard-S platform, we are very well placed."

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