ABB REB670 Series Applications Manual page 98

Section 6
Differential protection
Six-zone busbar differential protection, twenty-four, single-phase CT
Function description
Busbar protection 6Z-1Ph-24CT,
main function
Busbar protection 6Z-1Ph-24CT,
differential protection function
Busbar protection 6Z-1Ph-24CT,
check zone protection function
Busbar protection 6Z-1Ph-24CT,
feeder bay function
Busbar protection 6Z-1Ph-24CT,
bus interconnector bay function
6.1.2 Basic applications
6.1.2.1 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.
6.1.2.2 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 one-and-half breaker or ring busbar arrangements.
IEC11000237 V1 EN-US
Figure 39: Example of REB670 application on T-connection
92
IEC 61850
identification
BDZSGAPC
BZNPDIF_Zx
(1≤ x ≤6)
BCZPDIF
BFPTRC_Fx
(1≤ x ≤24)
BICPTRC_x
(1≤ x ≤5)
IEC11000237-1-en.vsd
IEC 60617 ANSI/IEEE C37.2
identification device number
87B
Id/I
IEC16000110 V1 EN-US
87B
Id/I
IEC16000110 V1 EN-US
87B
Id/I
IEC16000110 V1 EN-US
87B
Id/I
IEC16000110 V1 EN-US
87B
Id/I
IEC16000110 V1 EN-US
Busbar protection REB670
1MRK 505 370-UEN D
GUID-23F2558B-FB4A-4912-9EF9-F93706F32213 v1
SEMOD127448-1 v1
M12097-3 v3
M12098-3 v4
Application manual