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Technical Data
4.16 Flexible Protection Functions
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
321
4.16
Flexible Protection Functions
Measured Values / Modes of Operation
Setting Ranges / Increments
Function Limits
Three-phase
I
, 3
I
0
,
I
1,
I
2,
I
2/
I
1, V, 3V
0
, V1, V2, P forward, P
reverse, Q forward, Q reverse, cos
ϕ
Single-phase
I
,
I
N
,
I
Ns
,
I
N2
, V, V
N
,V
x
, P forward, P reverse, Q
forward, Q reverse, cos
ϕ
Without fixed phase reference
f, df/dt, binary input
Measurement method for
I
, V
Fundamental,
r.m.s. value (true RMS),
positive sequence system,
negative sequence system,
zero sequence system
Pickup on
exceeding threshold value or
falling below threshold value
Pickup thresholds:
Current
I
,
I
1
,
I
2
, 3
I
0
,
I
N
for
I
N
= 1 A
0.05 A to 40.00 A
Increments 0.01 A
for
I
N
= 5 A
0.25 A to 200.00 A
Relationship
I
2
/
I
1
15 % to 100 %
Increments 1%
Sensitive ground current
I
Ns
0.001 A to 1.500 A
Increments 0.001 A
Voltage V, V
1
, V
2
, 3V
0
2.0 V to 260.0 V
Increments 0.1 V
Displacement voltage V
N
2.0 V to 200.0 V
Increments 0.1 V
Power P, Q
for
I
N
= 1 A
2.0 W to 10000 W
Increment 0.1 W
for
I
N
= 5 A
10 W to 50000 W
Power factor cos
ϕ
-0.99 to +0.99
Increments 0.01
Frequency
for f
Nom
= 50 Hz
for f
Nom
= 60 Hz
40.0 Hz to 60.0 Hz
50.0 Hz to 70.0 Hz
Increments 0.01 Hz
Increments 0.01 Hz
Frequency change df/dt
0.10 Hz/s to 20.00 Hz/s
Increments 0.01 Hz/s
Dropout ratio > element
1.01 to 3.00
Increments 0.01
Dropout ratio < element
0.70 to 0.99
Increments 0.01
Dropout difference f
0.02 Hz to 1.00 Hz
Increments 0.01 Hz
Pickup delay (standard)
0.00 s to 60.00 s
Increments 0.01 s
Pickup delay for
I
2
/
I
1
0.00 s to 28800.00 s
Increments 0.01 s
Command time delay
0.00 s to 3600.00 s
Increments 0.01 s
Dropout delay
0.00 s to 60.00 s
Increments 0.01 s
Power measurement three-phase
for
I
Nom
= 1 A
Positive sequence system current > 0.03 A
for
I
Nom
= 5 A
Positive sequence system current > 0.15 A
Power measurement single-phase
for
I
Nom
= 1 A
Phase current > 0.03 A
for
I
Nom
= 5 A
Phase current > 0.15 A
Relationship
I
2
/
I
1
measurement
for
I
Nom
= 1 A
Positive or negative sequence system current >
0.1 A
for
I
Nom
= 5 A
Positive or negative sequence system current >
0.5 A