Siemens SIPROTEC 5 - Application and Setting Notes

Resetting the LED Group
Using the Reset the LED group function, you can reset the stored LEDs of the functions in one specific func-
tion group while the activated, stored LEDs of other functions in other function groups remain activated.
Operational Measured Values
The operational measured values are always present in the Voltage-current 3-phase function group and
cannot be removed.
The following table shows the operational measured values of the Voltage-current 3-phase function group:
Table 6-3 Operational Measured Values of the Voltage-Current 3-Phase Function Group
Measured Values Primary Secon-
dary
% Referenced to
I
A
, I
B
, I
C
Phase currents A A Rated operating current of the primary values
3I0 Calculated zero-sequence current A A Rated operating current of the primary values
I
N
Neutral-point phase current A A Rated operating current of the primary values
I
NS
Sensitive ground current A mA Rated operating current of the primary values
V
A
, V
B
, V
C
Phase-to-ground voltages kV V Operating rated voltage of primary values/√3
V
AB
, V
BC
, V
CA
Phase-to-phase voltages kV V Rated operating voltage of the primary values
V
0
Zero-sequence voltage kV V Operating rated voltage of primary values/√3
V
NG
Neutral-point displacement
voltage
kV V Operating rated voltage of primary values/√3
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 9.3 Operational Measured Values.
Application and Setting Notes
Parameter: Rated current
•
Default setting (_:9451:101) Rated current = 1000 A
The Rated current parameter is used to set the primary rated current. The Rated current specified
here is the reference value for the percentage-measured values and setting values made in percentages.
If the device works with the IEC 61850 protocol, then you change only the setting value of the parameter via
DIGSI 5 and not directly on the device. If you change the setting value directly on the device, then the
IEC 61850 configuration of the metered values can be faulty.
6.3.3
Function-Group Types
6.3 Function-Group Type Voltage/current 3-Phase
SIPROTEC 5, Fault Recorder, Manual 149
C53000-G5040-C018-5, Edition 11.2017