Siemens SIPROTEC 4 Manual page 417

Synchrocheck function 25
Currents of sensitive ground fault detection
(total, real, and reactive current)
, Ι ; Ι
Ι
Ns Nsreal Nsreactive
Phase angle between zero sequence voltage
and sensitive ground current φ (3V0, Ι
1) at nominal frequency
2) Displaying of cos ϕ as of Ι/Ι
Long-Term Mean Values
Time Window
Frequency of Updates
Long-Term Averages
Min./Max. Memory
Storage of Measured Values
Reset automatic
Manual Reset
Min/Max Values for Current
Min/Max Values for Voltages
Min/Max Values for Power
Min/Max Values for Overload Protection
Min/Max Values for Mean Values
SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017
Range
Tolerance 1)
Range
Tolerance 1)
)
Ns
Range
Tolerance 1)
and V/V greater than 10%
Nom Nom
of Currents
of Real Power
of Reactive Power
of Apparent Power
0 % to 400 %
5 % class accuracy acc. to IEC 60255-8
see Section (Synchrocheck)
in A (kA) primary and in mA secondary
0 mA to 1600 mA or
0 A to 8 A for INom = 5 A
3 % of measured value or 1 mA
in °
- 180° to + 180°
± 1°
5, 15, 30 or 60 minutes
adjustable
; Ι ; Ι ; Ι in A (kA)
Ι
Admd Bdmd Cdmd 1dmd
P in W (kW, MW)
dmd
Q in VAr (kVAr, MVAr)
dmd
S in VAr (kVAr, MVAr)
dmd
with date and time
Time of day adjustable (in minutes, 0 to 1439 min) Time
frame and starting time adjustable (in days, 1 to 365 days,
and ∞)
Using binary input
Using keypad
Via communication
; Ι ; Ι ;
Ι
A B C
(positive sequence component)
Ι
1
V ; V ; V ;
A-N B-N C-N
V (positive sequence component);
1
V ; V ; V
A-B B-C C-A
S, P; Q, cos φ; frequency
Θ/Θ
tRIP
; Ι ; Ι ;
Ι
Admd Bdmd Cdmd
(positive sequence component);
Ι
1dmd
S ; P ; Q
dmd dmd dmd
Technical Data
4.23 Auxiliary Functions
417