Backup power supply (APS-724)

APS-724 is a switch-mode backup power supply for devices requiring 24 V DC, included in the alarm system or other installations.

The power supply is characterized by a high output current of 7 A, which determines the maximum current delivered by the power supply connected to the load. When the battery is being charged, this value is reduced by the maximum battery charging current: 6 A (powering devices) + 1 A (charging battery). Energy efficiency of the APS-724 power supply is up to 94%.

The system complies with EN 55011 Class B in terms of the level of conducted and radiated EMI. It also meets the requirements of EN 60950-1 safety standard.

Indisputable advantages of its structure include: a built-in interference suppression filter and an active system for power factor correction (PFC) - up to 0.99. This ensures very good and stable operating parameters, also in the presence of high fluctuations in the supply voltage.

Lead-acid batteries or other battery types with similar charging characteristics can be connected to the device. This enables uninterrupted operation of the system to be maintained - even for several hours - when the primary power source fails.

Additionally, APS-724 comes with:

• battery charge status control (including internal resistance measurement)
• battery deep discharge protection.

The power supply is provided with 4 OC type fault signaling outputs. The LEDs located on the anodized aluminum enclosure indicate:

• power output status
• battery status
• AC status
• too high temperature of the power supply.

Audible signaling of troubles is also available.

The system is provided with over-current and short-circuit. The power cable is connected to the IEC C14 connector.

Features:

• 24 V DC switch-mode power supply
• output current: 7 A or 6 A (powering devices) + 1 A (charging battery)
• compliant with EN 60950-1 safety standard requirements
• compliant with EN 55011 Class B standard regarding the level of conducted and radiated EMI
• active power factor correction system (up to 0.99)
• energy efficiency up to 94%
• short-circuit and over-current protection
• designed for use with sealed lead-acid battery
• battery deep discharge protection
• 4 OC outputs for trouble indication
• optical indication of power output status, battery status, AC status and too high temperature of the power supply
• audible indication of troubles
• anodized aluminum enclosure
• IEC C14 power cable connector