Basic Applications; General; Meshed Corner Application And T-Connection Application; Busbar Protection Applications - ABB REB670 Applications Manual

1MRK 505 370-UUS A
6.1.2
6.1.2.1
6.1.2.2
6.1.3
Busbar protection REB670 2.2 ANSI
Application manual
Status of primary switching object for busbar protection zone selection
Function description
Status of primary switching object for
Busbar protection zone selection

Basic applications

General

Basic types of applications for REB670 IED are shown and described in this chapter.
For these applications usually three phase version of the IED, with two differential
zones and four (or even eight) 3-phase CT inputs, is used.

Meshed corner application and T-connection application

The REB670 general differential function is suitable for application on mesh-corner
arrangements. Mesh corners might have four or even up to six CT inputs and are
basically simple single busbar arrangements. A similar application will occur when a
T-protection is required for breaker-and-a-half or ring busbar arrangements.
252
ANSI11000237-1-en.vsd
ANSI11000237 V1 EN-US
Figure 40: Example of REB670 application on T-connection

Busbar protection applications

A busbar protection scheme design depends very much on the substation arrangement.
Complexity of the scheme can drastically vary from station to station. Typical
Differential protection
IEC 61850 IEC 60617
identification identification
BDCGAPC -
(128 instances)
Section 6
SEMOD130390-4 v4
ANSI/IEEE C37.2
device number
-
SEMOD127448-1 v1
M12097-3 v3
M12098-3 v4
SEMOD127456-1 v2
109