OneU

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Fire protection systems for 19" racks

The OneU fire protection systems offer perfect fire protection, optimised for these IT areas. It stands out due to its fi re detection and extinguishing per rack, its slimline 1 unit (1U) space advantages, its modular extensibility with slave systems and its high availability through redundant components, integrated battery buffering.
All in all, it sets new standards for 19” extinguishing systems
OneU active extinguishing system
The integrated smoke aspiration system continuously takes air samples from the entire switch cabinet that it is protecting through an sampling pipe with several openings, which is installed in the switch cabinet. The smoke aspiration system is usually equipped with highsensitive and normal-sensitive smoke detectors.
In this way, two different alarm thresholds are provided for the graduated combination of device shutdown and fire. The evaluation of measured values by an intelligent microcontroller enables OneU to detect fire with very low tolerance for error. Optionally, the OneU active extinguishing system may also be connected to an external manual fire alarm for manual activation.
The integrated extinguishing system consists mainly of a light metal container with the extinguishing agent Novec™ 1230, an release mechanism with valve and cartridge with propellant, loss monitoring for the extinguishing agent and the OneU discharge nozzle. During extinguishing, the cartridge with propellant is opened and the liquid agent flows to the OneU nozzle. The special geometry ensures that the agent is vaporised when exiting the nozzle and its full extinguishing effect is unfolded. Uninterrupted operation of up to four hours is ensured using integrated battery buffering. Interference of operation is notified by the extensive self-monitoring system of the OneU fire protection system. The two-line LCD display and additional LED lights for operation, alarm and failure inform the operator quickly about the operating status. There are dry contacts available for further notifi cation of alarms and failures, e.g. central control technology or fire detection system installed in the building as
well as device shutdown.