No. Information Type of
Informa-
tion
Comments
803 Θ/Θtrip B= MV Temperature rise for phase B
804 Θ/Θtrip C= MV Temperature rise for phase C
7731 Φ I AB= MV PHI I AB (local)
7732 Φ I BC= MV PHI I BC (local)
7733 Φ I CA= MV PHI I CA (local)
7734 Φ V AB= MV PHI V AB (local)
7735 Φ V BC= MV PHI V BC (local)
7736 Φ V CA= MV PHI V CA (local)
7737 Φ VI A= MV PHI VI A (local)
7738 Φ VI B= MV PHI VI B (local)
7739 Φ VI C= MV PHI VI C (local)
Differential Protection Values
Measured Values of the Differential Protection
The differential and restraint current values of the differential protection can be displayed at the front of the
device, read out via the operating interface using a PC with DIGSI, or transferred to a control center via the
system interface.
Table 2-11
Messwerte des Differentialschutzes
Measured Values referred to
Diff3I0=
Calculated restraint currents of the zero sequence system % rated operational current
Rest3I0=
Calculated differential current of the zero sequence system
Ι/ΙnO
Information List
No.
Information Type of
Informa-
tion
Comments
7748 Diff3I0= MV Diff3I0 (Differential current 3I0)
32226 Rest3I0= MV Rest3I0(% Operational nominal current)
Measured Values Constellation
Functional Description
The measured values of the constellation of both possible devices are shown here by evaluating the device
(see Table 2-12). Information on the second device is given in the Appendix.
The computation of this measured values constellation is also executed during an existent system fault in an
interval of approx. 0.5 s.
The current/voltage measured locally is assumed as reference value for the angle. The angle values of the
remote ends are referred to the locally measured value.
Examples for the current in a constellation with 2 ends:
Current ΙA at the local end 98 % angle 0°
Current ΙA at the local end 98 % angle 180°
The device addresses allow differentiating the devices. This procedure allows current transformer polarity
reversal to be detected immediately and the line angle (if voltages are available) to be read.
2.17.4
2.17.4.1
2.17.4.2
2.17.5
2.17.5.1
Functions
2.17 Auxiliary Functions
186 SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
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