Monitoring Functions - Siemens SIPROTEC 4 7VK61 Manual

Technical Data

4.7 Monitoring Functions

4.7 Monitoring Functions
Measured values
Current sum
- SUM.ΙLimit
- SUM.FACTORΙ
Voltage sum
Current Symmetry
- BAL.FACTOR.Ι
BAL.ΙLIMIT
T BAL.ΙLIMIT
Broken conductor
Voltage Symmetry
- BAL.FACTORU
- BAL.ULIMIT
- T BAL.ULIMIT
Voltage phase sequence
Non-symmetrical voltages
(Fuse failure monitoring)
- FFM U>
- FFM Ι<
Three-phase measuring voltage failure
(Fuse failure monitoring)
- FFM UMEAS <
- FFM Ι
delta
- T U SUPERVISION (wait time for additional measured
voltage failure monitoring)
- T U mcb
Phase angle positive sequence power
- φA, φB
248
= | Ι + Ι
Ι
F L1 L2
SUM.I Threshold · Ι
for Ι = 1 A 0.05 A to 2.00 A
N
for Ι = 5 A 0.25 A to 10.00 A
N
0.00 to 0.95
U = | U + U
F L1
| Ι |/| Ι | < BAL.FACTOR.Ι
min max
as long as Ι
max
0.10 to 0.95
for Ι = 1 A 0.10 A to 1.00 A
N
0.50 A to 5.00 A
for Ι = 5 A
N
5 s to 100 s
One conductor without current, the others with current
(monitoring of current transformer circuits on current step
change in one phase without residual current)
| U |/| U
min max
as long as | U
0.58 to 0.95
10 V to 100 V
5 s to 100 s
U before U
L1 L2
as long as | U
3 · U > FFM U> or 3 · U
0
and at the same time
3 · Ι < FFM Ι< and 3 · Ι
0
10 V to 100 V
for Ι = 1 A 0.10 A to 1.00 A
N
for Ι = 5 A 0.50 A to 5.00 A
N
all U < FFM UMEAS <
Ph-E
and at the same time
all ΔΙ < FFM Ι
Ph
and
all Ι > (Ι > (Dist.))
Ph Ph
2 V to 100 V
0.05 A to 1.00 A
for Ι = 1 A
N
for Ι = 5 A 0.25 A to 5.00 A
N
0.00 s to 30.00 s
0 ms to 30 ms
Message when the angle lies inside the area of the P-Q level
parameterised by φA and φB
0° to 259°
+ Ι + k · Ι | >
L3 E
Ι
+ SUM.FACTORΙ ·Σ | Ι |
N
Increments 0.01 A
Increments 0.01 A
Increments 0.01
+ U + k · U | > 25 V
L2 L3 U EN
/Ι > BAL.ΙLIMIT/Ι
N N
Increments 0.01
Increments 0.01 A
Increments 0.01 A
Increments 1 s
| < BAL.FACTOR.U
| > BAL.ULIMIT
max
Increments 0.01
Increments 1 V
Increments 1 s
before U
L3
|. | U | . | U | > 40 V/√3
L1 L2 L3
> FFM U>
2
< FFM Ι<
2
Increments 1 V
Increments 0.01 A
Increments 0.01 A
delta
Increments 1 V
Increments 0.01 A
Increments 0.01 A
Increments 0.01 s
Increments 1 ms
Increments 1°
SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018