Technical Data
4.20 Additional Functions
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A4, Release date 08.2010
390
4.20 Additional Functions
Operational measured values
Currents
I
A
; I
B
; I
C
Positive Sequence Component I
1
Negative Sequence Component I
2
I
N
or 3I0
in A (kA) primary and in A secondary or in % of I
Nom
Range
Tolerance
1)
10 % to 150 % I
Nom
1,5 % of measured value, or 1 % I
Nom
and 151 % to 200 % I
Nom
3 % of measured value
Phase-to-ground voltages
V
A-N
, V
B-N
, V
C-N
Phase-to-phase voltages
V
A-B
, V
B-C
, V
C-A
V
N
, V
ph-gnd
, V
x
or V
0
Positive sequence component V
1
Negative sequence component V
2
in kV primary, in V secondary or in % of V
Nom
Range
Tolerance
1)
10 % to 120 % of V
Nom
1.5 % of measured value, or 0.5 % of V
Nom
S, apparent power in kVAr (MVAR or GVAR) primary and in % of S
Nom
Range
Tolerance
1)
0% to 120% S
Nom
1 % of S
Nom
For V/V
Nom
and I/I
Nom
= 50 to 120%
P, active power with sign, total and phase-segregated in kW (MW or GW)
primary and in % S
Nom
Range
Tolerance
1)
0% to 120% S
Nom
2 % of S
Nom
For V/V
N
and I/I
Nom
= 50 to 120% and | cos ϕ | = 0.707 to 1
With S
Nom
=√3 · V
Nom
· I
Nom
Q, reactive power with sign, total and phase-segregated in kVAr (MVAr or GVAr)
primary and in % S
Nom
Range
Tolerance
1)
0% to 120% S
Nom
2 % of S
Nom
For V/V
Nom
and I/I
Nom
= 50 to 120% and | sin ϕ | = 0.707 to 1
With S
Nom
=√3 · V
Nom
· I
Nom
cos ϕ, power factor
2)
total and phase-segregated
Range
Tolerance
1)
–1 to +1
2 % for | cos ϕ | ≥ 0.707
Angle ϕ
A
; ϕ
B
; ϕ
C
, in degrees ( ° )
Range
Tolerance
1)
0 to 180°
0,5°
Frequency f in Hz
Range
Tolerance
1)
f
Nom
± 5Hz
20 mHz
Temperature overload protection
Θ /Θ
Trip
in %.
Range
Tolerance
1)
0 % to 400 %
5% class accuracy per IEC 60255-8
Currents of sensitive ground fault detection
(total, active, and reactive current)
I
Ns
, I
Ns real
; I
Ns reactive
in A (kA) primary and in mA secondary
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