The broad range of applications for power supplies in the building automation sector is often accompanied by stringent technical requirements. The conditions subjected to a building are often severe. Thunder storms can cause high transients in the supply voltage of power supplies, especially in high buildings and towers. Therefore a robust electrical design of the input converter is vital. In the case of extreme conditions, surge protectors are additionally implemented to protect the power supply input. 

building automation

Small size and low generation of heat

In building applications, the installation space for the power supply is often limited, e.g. in suspended ceilings. PULS power supplies with their inherently compact dimensions and high efficiency fit perfectly in these applications.

High MTBF figures guarantee perfect reliability

A highly efficient power supply helps to keep the temperature in the cabinet down - ensuring a long service life and high MTBF figures. In LED lighting applications especially, high service life figures are essential and high MTBF figures help to minimise the failure rate.

PFC norm is fulfilled

In many building applications the PFC norm, EN 61000-3-2, is required. PULS power supplies are able to fulfil this requirement with active correction which minimises the reactive current in the mains supply.

Typical applications in building automation:

  • LED lighting applications
  • Venetian blind drives
  • Communication
  • Elevators and escalators
  • Emergency lighting
  • DC-UPS for surveillance

Application example:

Royal Clock Tower in Mecca

Royal Clock Tower in Mecca

When night falls in Mecca, the green dials of the world’s largest clock tower are still clearly visible at a distance of over 10 miles. This is achieved with two million LEDs – and around 1000 power supplies.

PULS has been entrusted with providing these power supplies. This project placed particular demands on the inrush current. Selected PULS products can cope with the very high inrush currents that occur when 1000 power supplies are switched on simultaneously. The requirement for low heat generation was achieved due to the high efficiency of up to 95.5% and compact size. Additionally, as the tower is 601 meters high, the power supplies must have high immunity to a possible lightning strike in order to ensure uninterrupted service.

PULS Dimension XT series, 48V / 20A fulfil all of these challenging requirements and deliver the one million watts of power that are required to illuminate the LEDs in the Royal Clock Tower in Mecca. Read more

The following PULS DIN-rail power supplies are perfectly suitable for applications in building automation:

DIN-Rail Power Supplies for 1-phase Systems

  Compare Data Go Output Range Power Input Dimension

WxHxD (mm)
Special Feature Datasheet
CP10.241 DC 24V 10A 24-28Vdc 240W AC 100-240V DC 110-150V 39 124 117
QS40.484 DC 48V 20A 48-54Vdc 960W AC 200-240V 125 124 127
PIC120.241C DC 24V 5A 24-28Vdc 120W AC 200-240V 39 124 124 DC-OK relay contacts
PIC120.242C DC 24V 5A 24-28Vdc 120W AC 200-240V 39 124 124
PIC240.241C DC 24V 10A 24-28Vdc 240W AC 200-240V 49 124 124 DC-OK relay contacts

DIN-Rail Power Supplies for 3-phase Systems

  Compare Data Go Output Range Power Input Dimension

WxHxD (mm)
Special Feature Datasheet
XT40.481 DC 48V 20A 48Vdc 960W AC 400V 96 124 159 semi-regulated