Grade 3 buffered switch-mode power supply, HPSG3 27.6V/5A/2x40Ah/LCD HPSG3-24V5A-D-LCD

Grade 3 buffered power supply – reliable power supply for security systems

This advanced buffered power supply, designed for alarm systems (SSWiN) and access control (KD), provides uninterrupted power to critical devices. Compliance with EN50131-6 (grade 1-3) and EN60839-11 standards guarantees its high quality and reliability. The device is ideal for applications requiring a stable 27.6V DC voltage, while also offering monitoring and remote control functions.

Design and operating parameters

The HPSG3-24V5A-D-LCD power supply has been designed with efficiency and durability in mind. It uses a high-efficiency AC/DC converter, achieving an efficiency level of 86%, which translates to lower energy losses and more stable operation. The ability to work with batteries with a capacity of 7Ah to 40Ah (per output) allows you to tailor the system to individual needs. The total output current is 5A, and the battery charging current is 1.8A. The built-in LCD display makes it easy to monitor operating parameters and quickly diagnose any problems.

Functions and protections for professionals and users

The power supply offers a wide range of functions that will be appreciated by both installers and end users:

• Protections: SCP (short-circuit), OLP (overload), OVP (overvoltage), UVP (deep discharge protection), tamper (opening the housing/detachment from the wall).
• OC type technical outputs: EPS (AC power failure), PSU (power supply failure), APS (battery failure) – allowing integration with an alarm or access control system.
• EXT IN input: for connecting external failure sensors.
• START function: manual activation of power from the battery in the event of a power failure.
• Monitoring: measurement of battery circuit resistance, automatic temperature compensation of charging, dynamic battery test, control of output and battery voltage.
• Remote monitoring: via optional LAN or RS485 modules.
• LCD display: presents key operating parameters of the power supply and event history.

The metal housing provides durability and resistance to sabotage attempts, and its design allows for easy surface mounting. The use of anti-sabotage protections further increases the security level of the installation.

This power supply operates on a network voltage of 200-240 V AC and provides an output voltage of 27.6 V DC with a maximum output current of 5 A. The efficiency of the device is 86%. The battery charging current is 1.8 A, and its dimensions are 414 x 408 x 190 mm. The power supply meets the EN50131-6 and EN60839-11 standards, which guarantees its compliance with the requirements of security systems.