AS ELTEK NORWAY NOOR CONTROL VEKSELRETTER SML 24/500/R 241520 13:12

The AS ELTEK NORWAY NOOR CONTROL VEKSELRETTER SML 24/500/R is a DC Power Supply or Battery Charger Module manufactured by Eltek, a renowned Norwegian company (now part of the Vertiv group) known for its high-efficiency, high-reliability power electronics.

The Norwegian word “Vekselretter” directly translates to “Rectifier,” which is the core function of this unit. It converts alternating current (AC) from the mains power into direct current (DC). The “SML” series is a specific line of compact, high-quality rectifier/charger modules designed for telecommunications and industrial applications.

Key Specifications from the Label

• Manufacturer: AS ELTEK NORWAY / NOOR CONTROL (This indicates it was manufactured by Eltek’s Norwegian division, a mark of high quality).

• Model / Type: SML 24/500/R

• Function: Vekselretter (Rectifier / Battery Charger)

• Output Voltage: 24V DC (Nominal). This is designed for 24V battery systems and equipment.

• Output Current: 500 (This almost certainly indicates a 50.0 Amp output current. The formatting often omits the decimal).

• Revision/Variant: R (Likely a specific hardware revision).

• Part/Serial Number: 241520

Key Features and Functions

• AC to DC Conversion: Its primary function is to take AC input (likely 230V AC European mains) and convert it to a stable, regulated 24V DC output.

• Battery Charging: It is specifically designed to charge and maintain 24V lead-acid battery banks (Vented, AGM, or Gel). It will feature a multi-stage charging profile (Bulk, Absorption, Float) to charge batteries quickly and safely without overcharging.

• Current Rating: With a 50A output, this is a substantial power supply. It can deliver up to ~1200 watts (24V * 50A = 1200W). This makes it suitable for:

  • Charging large battery banks (e.g., ~200 Ah to 400 Ah).

  • Powering equipment with a high DC power demand.

• Power System Component: This module is often used as a building block in larger DC power systems. Multiple units can be installed in parallel to provide redundant power or a higher total current output.

• Communications and Monitoring: Many Eltek SML models feature communication interfaces (like a CAN bus or analog signals) for remote monitoring of voltage, current, and status, and for integration into a larger power management system.

• High Efficiency and Reliability: Built to industrial and telecom standards, these units are designed for continuous, 24/7 operation with high efficiency and a long service life.

Common Applications

This rectifier/charger is a core component in systems requiring reliable DC power, such as:

• Telecommunications Base Stations: Powers radio equipment and charges the backup battery bank.

• Industrial Control Systems: Provides clean DC power for PLCs, sensors, and control systems.

• Backup Power Systems: Serves as the charger for 24V UPS (Uninterruptible Power Supply) battery strings.

• Marine & Offshore: Used on vessels to charge 24V battery banks for equipment and emergency systems.

• Renewable Energy Systems: Can be used as a grid-powered backup charger in off-grid or hybrid solar/wind power systems.