Technical data

1MRS751108-MUM
REX 521
63
Protection Relay
Technical Reference Manual, General
8. Revision history of REX 521
8.1. Revision identification
The main releases of REX 521 products are differentiated with the revision and
configuration revision letters in the order number (see “Ordering information” on
page 61).
The revision and configuration revision letters determine the main release which
may involve functional additions and changes to the product. Revision letter
indicates changes in relay hardware and configuration revision letter in software.
The changes included in each release compared to the previous one are described in
more detail below.
8.2. Changes and additions to earlier released revision E
General
• New display module
• New language added: Chinese
• Selectable CB closing delay
• Selectable ANSI/IEC symbol support
Function blocks and standard configurations
• Output SWGRP Trip4 and Trip5 added to all configurations
• CB open connectable to PO or a SO
• Blocking of synchro check via digital input possible in configurations H01, H03
and H03S
• New configurations: H09, H50, H51
8.3. Configuration, setting, and SA system tools
The following tool versions are needed to support the new functions and features of
Release Q1/2006 revisions of REX 521:
• CAP 501 Relay Configuration Tool; CAP 501 v.2.4.0 or later
• CAP 505 Relay Configuration Tool; CAP 505 v.2.4.0 or later
• LIB 500 Library for MicroSCADA Pro.; LIB 500 v.4.2-1 or later
• LIB 510 Library for MicroSCADA Pro.; LIB 510 v.4.2-1 or later
• SMS 510 v.1.3.0 or later
Table 8.1.-1 Revisions of REX 521
Product Revision
Configuration
revision
Release
REX 521 A B Q3/2001
B C Q3/2002
C D Q4/2003
E E Q2/2004
G G Q1/2006