Siemens 7SJ85 - Page 220

Measured Values Primary Secondary % Referenced to
I
N
Neutral-point phase current A A Rated operating current of the primary
system
I
seq:0
Zero-sequence current A A Rated operating current of the primary
system
I
seq:1
Positive-sequence current A A Rated operating current of the primary
system
I
seq:2
Negative-sequence current A A Rated operating voltage of the primary
system
V
A
, V
B
, V
C
Phase-to-ground voltages kV V Rated operating voltage of the primary
system/√3
V
AB
, V
BC
, V
CA
Phase-to-phase voltage kV V Rated operating voltage of the primary
system
V
N
Neutral-point phase voltage kV V Rated operating voltage of the primary
system/√3
V
seq:0
Zero-sequence voltage kV V Rated operating voltage of the primary
system/√3
V
seq:1
Positive-sequence voltage kV V Rated operating voltage of the primary
system/√3
V
seq:2
Negative-sequence voltage kV V Rated operating voltage of the primary
system/√3
Voltage and power measurements are only available if V-3ph measuring point connected to the Capacitor
bank function group.
The energy measurements are not predefined. If required, they must be loaded from the Global DIGSI 5
Library.
Inversion of Power-Related Measured and Statistical Values (FB General)
The following values calculated in operational measured values are defined positively in the direction of the
protected object.
•
Power
•
Power factor
•
Energy
•
Minimum, maximum values of the power
•
Average values of the power
With the P, Q sign setting, you can invert the sign of these operational measured values such that a power
flow from the line to the busbar is displayed positively.
More information can be found in Chapter 10.1 Overview of Functions.
Output Logic
The output logic treats the pickup and operate indications of the protection functions and supervision func-
tions in the Capacitor bank function group separately, in a pickup logic and an output logic respectively. The
pickup and output logics generate the group indications of the function group. These group indications are
transferred to the Circuit-breaker function group via the protection-information interface and are processed
further there.
The pickup and operate indications of the protection functions and the supervision functions in the Capacitor
bank function group are combined according to the following figures of group indications.
Function-Group Types
5.4 Function-Group Type Capacitor Bank
220 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017