MSS – EMERGENCY POWER SUPPLIES EN50171 SINE WAVE 0.75-7.5KW SINGLE PHASE

Emergency Centralized Power Supply to EN 50171

• 120% CONTINUOUS OVERLOAD
• BATTERY REVERSAL PROTECTION
• HIGH CHARGING CURRENT
• CASING WITH HIGH MECHANICAL PROTECTION
• BATTERY LIFE EXPECTANCY 10 YEARS
• RESTORE TO 80% AUTONOMY WITHIN 12 HOURS AFTER DEEP DISCHARGE

OPERATING MODE

The CEI EN 50171 standard provides for different types of operation; In practical cases, 2 main operating modes are used, described below.

NON-STOP OPERATION (Always on)

In this mode, the load is permanently supplied by the SCO system via the inverter (fig.3). When the input grid fails, it is always the inverter, through the energy supplied by the batteries, to power the load (fig.4). When switching from the mains condition to the mains condition no input, there is no interruption to the power supply to the load, hence the name “uninterrupted” mode.

In this mode, the static bypass of the SCO system works only in the event of a failure of the SCO itself, or is used, together with any manual bypass, for system maintenance purposes

NON-PERMANENT SWITCHING OPERATION (Emergency only)

This mode is used in cases where the security systems require power only when the mains fails, for example emergency lighting systems that only work in emergencies (the so-called S.E. Emergency Only systems).

In mains conditions the load is not supplied with power (fig5). In the event of a mains failure, the SCO device supplies power to the safety devices connected to it, also in this case within a time of 0.5 seconds from the mains failure (fig.6)

OPERATION WITH PERMANENT (always on)/NON-PERMANENT (emergency only) switching

This mode represents the combination of modes 1 and 3 so that one load can be permanently powered (even in the absence of the mains) and at the same time power to another only in the absence of the mains. When the network is present, the “emergency only” load is not powered

Working environment

Mechanical specifications