Lampertz - Active Extinguishing System

The DET-AC Plus active system has been designed for installation in enclosed switch cabinets and is a separate compact unit capable of detecting and extinguishing fires.
The extinguishing agent used is Novec^TM 1230, a chemically acting liquid which evaporates at a nozzle and has extinguishing powers in gaseous form. Fire detection takes place via sensors to be adjusted for the anticipated fire characteristics (automatic fire detectors). Alarms and faults can be transmitted via potential-free contacts or optionally via the CMC-TC with I/O unit to a superordinated location (monitoring or control device).
The compact Active Extinguishing System with a space requirement of only 1 unit is intended for installation in the upper third, preferably the top slot of a 19" switch cabinet system. The device is easy to install and cheap to maintain.

Areas of application
The DET-AC Plus Active Extinguishing System is used to protect high quality technical installations whose high availability is a must.

These include:

• IT, server and network technology which must provide important data for the enterprise process and ensure the data flow itself
• Production controls whose technology ensures the uninterrupted running of the manufacturing processes
• Telecommunications installations which ensure that the communication of the enterprise works without interruptions
• Power supply and control systemswhich ensure sufficient energy at the right time at the right place in the enterprise

The earliest detection of a fire together with potential extinguishing action ensures that downtimes and subsequent damage caused by a technical fault are minimised.

This compact rack extinguisher system DET-AC Plus (Detection Active Plus) is designed for use in 19" IT racks. The system is equipped with a 2-stage smoke analysis extractor system. A bayed rack may optionally be included in the monitoring and extinguisher system. The system is also suitable for use in racks with bayed air/water heat exchangers (Liquid Cooling Package, LCP). The ecofriendly, non-toxic Novec1) 1230 is used as the extinguisher medium, which means that this extinguisher system is suitable for universal use. Sensitive hardware such as servers, storage and switches are not impaired by the extinguisher medium. Thanks to the extremely sensitive detection of smoke, even in racks with a high level of climate control (airflow speed), this ensures that there is plenty of time to forward an alarm message either acoustically, optically via the LC display on the enclosure front, or by connecting the integral floating contacts to the building management system or fire alarm centre and to the Rittal monitoring system CMC-TC. When opening an enclosure door, activation of the extinguisher system is blocked by the two access sensors (door monitoring). In order to ensure that proper functioning of the system is maintained even in the event of a power failure, an emergency back-up power supply with a stored energy time of 4 hours is integrated into the system.

The system can also be supplied purely as an early fire detection system without the extinguisher medium tank.

Early smoke detection:
Thanks to the two highly sensitive optical sensors, minute particles of smoke may be detected even in the early stages of a fire (pyrolysis phase) via the active smoke extraction. If the 1st alarm detects smoke aerosols, a pre-alarm is triggered, and if the 2nd alarm likewise detects smoke, the extinguisher system is activated. This prevents major fires from developing.

Rack requirements:
As a general principle, the racks must meet protection category IP 55, i.e. with sealed doors and screw-fastened side panels. Use of an air/water heat exchanger (LCP) is supported.

Optional smoke analysis, extension for bayed racks:
The basic DET-AC Plus system is designed for a single rack, but neighbouring enclosures may also be incorporated via an additional pipe kit, provided the total interior enclosure volume to be extinguished does not exceed 3 m3. Several extinguisher systems may also be linked together in the bayed enclosure suites, so that all systems may be activated jointly.

Automatic system deactivation (compulsory deactivation):
In conjunction with the Rittal enclosure monitoring system CMC-TC plus suitable switchable Rittal socket strips (Power System Module PSM/Power Control Unit PCU with active current measurement, display and switching options), in the event of an alarm, compulsory deactivation of the components installed in the rack may be triggered. This ensures that the servers are protected from further destruction.

The alarms (pre-alarm, main alarm) may be transmitted via any given IP networks and processed in corresponding monitoring programs. The extinguisher system is supplied complete with mounting accessories.

Technical specifications:
- Protection/rack volume: 3.0 m3
- Extinguisher medium: Novec1) 1230
- Weight of extinguisher medium: 3.2 kg
- Power supply: 115 - 230 V AC/50 - 60 Hz 
- Emergency power supply (integral battery): max. 4 h
- Contact rating (pre-alarm, alarm, blocking): max. 30 V DC/1 A
- Sensors: 2x sensitive sensors, one each for pre-alarm/main alarm
- Ambient temperature: 10 - 35°C
- Display: LCD display with plain text information
- Material of enclosure: sheet steel, spray-finished
- Material of extinguisher tank: Aluminium
- Dimensions (W x H x D): 447 x 1 U x 780 mm

1)Novec is a registered trademark of 3M.

If you want to set up a secure, and possibly also a high-availability data centre nowadays, then you will need a strong partner....

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