ABB RET670 Applications Manual

ANSI07000198.vsd
SMAI1:13
BLOCK
DFTSPFC
^GRP1_A
^GRP1_B
^GRP1_C
^GRP1_N
TYPE
SPFCOUT
AI3P
AI1
AI2
AI3
AI4
AIN
SMAI1:1
BLOCK
DFTSPFC
^GRP1_A
^GRP1_B
^GRP1_C
^GRP1_N
TYPE
SPFCOUT
AI3P
AI1
AI2
AI3
AI4
AIN
SMAI1:25
BLOCK
DFTSPFC
^GRP1_A
^GRP1_B
^GRP1_C
^GRP1_N
TYPE
SPFCOUT
AI3P
AI1
AI2
AI3
AI4
AIN
ANSI07000199 V1 EN
Figure 24: Configuration for using an instance in task time group 2 as DFT
reference.
Assume instance SMAI4:16 in task time group 2 has been selected in the configuration
to control the frequency tracking for all instances. Observe that the selected reference
instance (i.e. frequency tracking master) must be a voltage type. Observe that positive
sequence voltage is used for the frequency tracking feature.
For task time group 1 this gives the following settings (see Figure
22 for numbering):
SMAI1:1 – SMAI12:12: DFTReference = ExternalDFTRef to use DFTSPFC input as
reference (SMAI4:16)
For task time group 2 this gives the following settings:
SMAI1:13: DFTRefExtOut = AdDFTRefCh4 to route SMAI4:16 reference to the
SPFCOUT output, DFTReference = AdDFTRefCh4 for SMAI1:13 to use SMAI4:16 as
reference (see Figure
24) SMAI2:14 – SMAI12:24: DFTReference = AdDFTRefCh4 to
use SMAI4:16 as reference.
For task time group 3 this gives the following settings:
SMAI1:25 – SMAI12:36: DFTReference = ExternalDFTRef to use DFTSPFC input as
reference (SMAI4:16)
1MRK504116-UUS C Section 3
IED application
93
Application manual

ABB RET670 Specifications

General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24