Supplementary Functions - Siemens siprotec 7SA6 User Manual

Technical Data

10.19 Supplementary Functions

Measured Value
Processing
10-38
Operational measured values of currents I
– Tolerance
Operational measured values of voltages U
– Tolerance
Operational measured values of voltages 3U
– Tolerance
Operational measured values of voltages U
– Tolerance
Operational measured values of
impedances
Operational measured values of power
– Tolerance
Operational measured values
of power factor
– Tolerance
Operational measured value
of frequency
– Range
– Tolerance
Thermal measured values
Operational measured values
of synchro check
Measured values of earth fault
detection in non-earthed systems
; I ; I ; 3I ; I ; I ; I
L1 L2 L3 0 1 2 Y
in A primary and secondary and in % I
0.5 % of measured value or 0.5 % of I
; U ; U ; U
L1–E L2–E L3–E
in kV primary and V second. and % U
0.5 % of measured value or 0.5 % of U
0
in kV primary and
V secondary and % U
N
0.5 % of measured value or 0.5 % of U
; U ; U ; U
L1–L2 L2–L3 L3–L1
in kV primary and V secondary and % U
0.5 % of measured value or 0.5 % of U
R ; R ; R ; R
L1–E L2–E L3–E
R ; X ; X ; X
L3–L1 L1–E L2–E
X ; X
L2–L3 L3–L1
in Ω primary and secondary
S; P; Q (apparent, active and
reactive power)
in MVA; MW; Mvar primary and % S
(operational nominal power) = √3 · U
1 % of measured value or 1 MVA/MW/Mvar
cos ϕ
0.02
f
in Hz and % f
N
96 % to 104 % of f
N
10 mHz or 0.2 %
Θ ; Θ ; Θ
/Θ /Θ
L1 TRIP L2 TRIP
related to tripping temperature rise
U ; U ; U in kV primary
line sync diff
f ; f ; f in Hz;
line sync diff
ϕ
in °
diff
I ; I (active and reactive component
Ea Er
of earth fault current (residual current)
in A primary and mA secondary
; I
P
N
N
X
/√3
N
N
· √3
N
; U ; U
1 2 x
N
N
; R ;
L1–L2 L2–L3
; X ;
L3–E L1–L2
N
· I
N N
; Θ/Θ
/Θ
L3 TRIP TRIP
7SA6 Manual
C53000-G1176-C133-1