AS ELTEK NORWAY NOOR CONTROL VEKSELRETTER SML 24/500/R 241520 #2 16:04

The Eltek Norway NOOR Control SML 24/500/R is a sophisticated Vekselretter (which is the Norwegian/Danish term for Rectifier or AC/DC Power Supply). It converts AC mains power (from a wall outlet) into a precisely controlled DC voltage to charge 24V battery banks and power connected DC equipment. The “R” in the model number typically denotes a 19″ Rack-mount version.

This is part of Eltek’s renowned Flatpack series (a very common and successful product line for them), known for its high efficiency, reliability, and modular design.

Key Features

• High Efficiency: Eltek rectifiers are known for their exceptional energy efficiency (>90%), reducing electricity costs and heat generation.

• Power Factor Correction (PFC): Features active PFC, minimizing the reactive power drawn from the AC mains and ensuring compliance with international electrical standards.

• Intelligent Battery Management: The “Control” in the name signifies its microprocessor-controlled charging. It features automatic multi-stage charging (Bulk, Absorption, Float) to optimize battery health and lifespan for lead-acid (VRLA, flooded) and often NiCd batteries.

• Hot-Swappable: Designed for systems with N+1 redundancy, meaning it can be inserted or removed from a live power system without shutting down the entire operation—critical for telecom sites.

• Comprehensive Monitoring: Often equipped with communication interfaces (like RS-232/485 or dry contacts) for remote monitoring of parameters such as voltage, current, temperature, and status alarms.

• Robust and Reliable: Built to operate 24/7 in demanding environments with a wide operating temperature range.

• Power Sharing: When multiple units are installed in parallel in a rack, they automatically share the load current equally.

Technical Specifications

Important Notes and How to Use

1. Battery Charging Profiles: This is not a simple “dumb” power supply. It must be configured correctly for the specific type and capacity of the battery it is charging (e.g., VRLA, Gel, Flooded). Incorrect settings can severely damage expensive battery banks.

2. Rack System: This unit is designed to be installed into a power shelf with other identical units, sharing the load and providing redundancy.

3. Datasheet is Critical: The code “241520 #2” is likely a manufacturer-specific factory code, batch number, or hardware version. To get exact details on wiring, communication protocols, and configuration, you must find the official Eltek Flatpack SML user manual or datasheet.

4. Safety: This unit deals with high voltages both on the AC input and DC output. Installation and service should be performed by qualified personnel.

Where to Find More Information

• Delta Electronics / Eltek Website: Since Delta acquired Eltek, product support and legacy documentation may be found on their sites. Search for “Eltek Flatpack SML”.

• Telecom and Industrial Power Suppliers: Companies that distribute rectifiers and power systems for telecom infrastructure will be familiar with this very common product line.

• Online Manual Archives: As this is a professional product, manuals are often available on sites like Scribd or manualslib.