Siemens 7SJ85 - Page 199

Measured Values Primary Secon-
dary
% Referenced to
f Frequency Hz Hz Rated frequency
P
total
Active power
(total power)
MW W Active power of the primary values
√3 · V
rated
· I
rated
Q
total
Reactive power
(total power)
Mvar var Reactive power of the primary values
√3 · V
rated
· I
rated
S
total
Apparent power
(total power)
MVA VA Apparent power of the primary values
√3 · V
rated
· I
rated
Cos φ Active power factor (abs) (abs) 100 % corresponds to cos φ = 1
P
A
, P
B
, P
C
Phase-related active power MW W Active power of the phase
V
rated phsx
· I
rated phsx
Q
A
, Q
B
, Q
C
Phase-related reactive power Mvar var Reactive power of the phase
V
rated phsx
· I
rated phsx
S
A
, S
B
, S
C
Phase-related apparent power MVA VA Apparent power of the phase
V
rated phsx
· I
rated phsx
The operational measured values are explained in more detail in chapter 10.3 Operational Measured Values.
Inversion of Power-Related Measured and Statistical Values (FB General)
The following directional values calculated in operational measured values are defined positively in the direc-
tion of the protected object.
•
Power
•
Active power factor
•
Energy
•
Minimum, maximum values
•
Average values
With the P, Q sign parameter, 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 trip signals of the protection and supervision functions that are avail-
able in the function group separately, in a pickup logic and a trip logic, respectively. The pickup and trip logic
generate the overreaching indications (group indications) of the function group. These group indications are
transferred via the Protection information interface to the Circuit-breaker function group and are processed
further there.
The pickup signals of the protection and supervision functions in the Voltage-current 3-phase function group
are combined in a phase-selective manner and output as a group indication.
Function-Group Types
5.1 Function-Group Type Voltage/current 3-Phase
SIPROTEC 5, Overcurrent Protection, Manual 199
C53000-G5040-C017-8, Edition 07.2017