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Technical Data
4.12 Flexible Protection Functions
4.12
Flexible Protection Functions
Measured Values/Modes of Operation
Three-phase
Single-phase
without fixed phase reference
Method of measurement for I, V
Pickup when
Setting Ranges/Increments
Pickup thresholds:
Current I, I
, I
, 3I
1
2
Ratio I
/I
2
1
Voltage V, V
, V
1
Displacement voltage V
Power P, Q
Power factor cosϕ
Frequency
Frequency change df/dt
Dropout ratio > element
Dropout ratio < element
Dropout difference f
Pickup delay (standard)
Pickup delay for I
Command delay time
Dropout delay
Function Limits
Power measurement three-phase
Power measurement single-phase
Ratio I
/I
2
1
measurement
260
, I
for I
= 1 A
0
N
Nom
for I
= 5 A
Nom
, 3V
2
0
N
for I
= 1 A
Nom
for I
= 5 A
Nom
for f
= 50 Hz
nom
for f
= 60 Hz
nom
/I
2
1
for I
Nom
for I
Nom
for I
Nom
for I
Nom
for I
Nom
for I
Nom
I, 3I
, I1, I2, I2/I1, V, 3V
0
reverse, Q forward, Q reverse, cosϕ
, I
, V, V
I, I
N
N2
ward, Q reverse, cosϕ
f, df/dt, binary input
Fundamental component,
true RMS value,
positive-sequence system,
negative-sequence system,
zero-sequence system
exceeding threshold value or
falling below threshold value
0.05 A to 40.00 A
0.25 A to 200.00 A
15 % to 100 %
2.0 V to 260.0 V
2.0 V to 200.0 V
2.0 W to 10000 W
10 W to 50000 W
-0.99 to +0.99
40.0 Hz to 60.0 Hz
50.0 Hz to 70.0 Hz
0.10 Hz/s to 20.00 Hz/s
1.01 to 3.00
0.70 to 0.99
0.02 Hz to 1.00 Hz
0.00 s to 60.00 s
0.00 s to 28800.00 s
0.00 s to 3600.00 s
0.00 s to 60.00 s
= 1 A
Positive-sequence current > 0.03 A
= 5 A
Positive-sequence current > 0.15 A
= 1 A
Phase current > 0.03 A
= 5 A
Phase current > 0.15 A
= 1 A
Positive-sequence current or negative-sequence
current > 0.1 A
= 5 A
Positive-sequence current or negative-sequence
current > 0.5 A
E50417-G1140-C486-A1, Release date 12.2011
, V1, V2, P forward, P
0
, P forward, P reverse, Q for-
N
Increments 0.01 A
Increments 1%
Increments 0.1 V
Increments 0.1 V
Increments 0.1 W
Increments 0.01
Increments 0.01 Hz
Increments 0.01 Hz
Increments 0.01 Hz/s
Increments 0.01
Increments 0.01
Increments 0.01 Hz
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
SIPROTEC, 7SC80, Manual
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