Signal Matrix Tool
With SMT the user can modify the standard configuration according to the actual
needs. The IED is delivered from the factory with default connections described in
the functional diagrams for BI's, BO's, function to function connections and alarm
LEDs. SMT has a number of different page views, designated as follows:
• Binary input
• Binary output
• Functions
The functions in different page views are identified by the IEC 61850 names with
analogy to the functional diagrams.
3.2.1 Standard configurations
The IED is available with six alternative standard configurations. The table indicates
the functions supported by the different IED configurations.
Table 7: Standard configurations
Description Std. conf.
Non-directional overcurrent and directional earth-fault protection A and B
Non-directional overcurrent and non-directional earth-fault protection C and D
Non-directional overcurrent and directional earth-fault protection with phase-voltage based measurements E
Directional overcurrent and earth-fault protection with phase-voltage based measurements, undervoltage and overvoltage
protection F
Table 8: Supported functions
Functionality
A B C D E F
Protection
Three-phase non-directional overcurrent, low-set stage ● ● ● ● ● -
Three-phase non-directional overcurrent, high-set stage, instance 1 ● ● ● ● ● -
Three-phase non-directional overcurrent, high-set stage, instance 2 ● ● ● ● ● -
Three-phase non-directional overcurrent, instantaneous stage ● ● ● ● ● ●
Three-phase directional overcurrent, low-set stage, instance 1 - - - - - ●
Three-phase directional overcurrent, low-set stage, instance 2 - - - - - ●
Three-phase directional overcurrent, high-set stage - - - - - ●
Directional earth-fault, low-set stage, instance 1 ● ● - - ● ●
Directional earth-fault, low-set stage, instance 2 ● ● - - ● ●
Directional earth-fault, high-set stage ● ● - - ● ●
Non-directional (cross country) earth fault, using calculated Io ● ● - - ● ●
Transient/intermittent earth fault ● ● - - ● ●
Non-directional earth fault, low-set stage - - ● ● - -
Table continues on next page
Section 3 1MRS756378 D
REF615 variants
28 REF615
Application Manual
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