ABB RELION 670 SERIES Applications Manual page 913

Line distance protection

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1MRK 506 369-UUS -

Line distance protection REL670 2.2 ANSI

Application manual

ANSI07000199 V1 EN

Configuration for using an instance in task time group 2 as DFT

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

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 = DFTRefGrp4 to route SMAI4:16 reference to the

SPFCOUT output, DFTReference = DFTRefGrp4 for SMAI1:13 to use SMAI4:16 as

reference (see Figure 418) SMAI2:14 – SMAI12:24: DFTReference = DFTRefGrp4 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)

Basic IED functions

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