ABB REX 521 Connectivity Package 2.2 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The following version: 2.2 is the most frequently downloaded one by the program users.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This free software is an intellectual property of ABB Oy, Distribution Automation. ABB REX 521 Connectivity Package lies within Education Tools, more precisely Science Tools.
From the developer:
The feeder protection relay REX 521 is designed for protection, control, measuring and supervision in medium voltage networks and for protection of large or medium-size three-phase a.c. motors in circuit breaker controlled motor drives. Typical applications include incoming, outgoing feeders and motor feeders as well as substation protection. Further, the relay can, e.g.
You may want to check out more software, such as ABB REF542plus Connectivity Package Ver. SP3, ABB IED Connectivity Package REF615 DE IEC Add-On or Connectivity Package for REF 541/543/545, which might be related to ABB REX 521 Connectivity Package.
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