is deactivated and the sensitivity is changed. This is done by changing the factor
Beta
which is
multiplied with a set constant
FactorCBopen
.
In addition to the binary outputs also some analog outputs are available from the protection
function in order to enable easier commissioning:
E3: the magnitude of the 3
rd
harmonic voltage induced in the stator given in primary volts
VN3: the magnitude of the 3
rd
harmonic voltage measured in the neutral point of the generator
VT3: the magnitude of the 3
rd
harmonic voltage measured in the terminal point of the generator
ANGLE: the angle between the phasors VN3 and VT3 given in radians
DV3: the magnitude of the 3
rd
harmonic differential voltage
BV3: the magnitude of the 3
rd
harmonic bias voltage
V_N: the fundamental frequency voltage measured in the neutral point of the generator
9.6.8 Technical data
SEMOD175168-2 v7
Table 373: STEFPHIZ (59THD) technical data
Function Range or value Accuracy
Fundamental frequency level
VN (95% Stator EF)
(1.0–50.0)% of
VBase
±0.25% of V
n
Third harmonic differential
level
(0.5–10.0)% of
VBase
±0.25% of V
n
Third harmonic differential
block level
(0.1–10.0)% of
VBase
±0.25% of V
n
Independent time delay to trip
for fundamental VN >
protection at 0 to 1.2 x
VNFund>
(0.020–60.000) s ±0.2% or ±40 ms whichever is greater
Independent time delay to trip
for 3rd harm-based protection
at 0 to 5 x VN3rdH<
(0.020–60.000) s ±0.2% or ±40 ms whichever is greater
Filter characteristic:
Fundamental
Third harmonic
Reject third harmonic by 1–40
Reject fundamental harmonic
by 1–40
-
9.7 Loss of voltage check LOVPTUV (27)
SEMOD171453-1 v3
9.7.1 Identification
SEMOD171954-2 v2
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Loss of voltage check LOVPTUV - 27
Section 9 1MRK 502 066-UUS B
Voltage protection
660
Technical manual
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