MP500/4N-8-16 Installation
4 - DESIGN: CALCULATIONS AND TESTS
4.1 SIZING OF THE POWER SUPPLIES AND THE BATTERIES
All the tests and calculations to be carried out in order to ensure that the power supplies and batteries to be installed are capable of
powering all the devices for the period of time specified by standard EN50131 are illustrated below.
4.1.1 Battery sizing
The system must be sized so as to guarantee, in case of a blackout, the minimum time of autonomy required by standard EN50131,
depending on the selected grade of security. Therefore, in order to guarantee minimum duration of the battery, the system powered
directly by the control panel must comply with the following requirements.
MP500/4N control panel with 7.2 Ah battery
All the devices
powered by the
control panel
MP500/8 control panel with 7.2 Ah battery
All the devices
powered by the
control panel
Configuration not possible
MP500/16 control panel with 18 Ah battery
All the devices
powered by the
control panel
(*) the time of autonomy can be halved to 30 hours if the system is remotely assisted with a guarantee of intervention in case of
blackout.
Table 4 - Control panel battery autonomy
The power supply for all internal circuits and devices is provided by an internal switching power supply.
The use of a 12 V lead-acid rechargeable battery is envisaged.
The battery to be used must:
Type VRLA (Valve Regulated Lead Acid)
Casing: UL94V-1 or higher flammability rating
Comply to IEC 60896-21: 2004, IEC 60896-22: 2004
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