Monitoring Functions - Siemens SIPROTEC 4 7SD80 Manual

Technical Data

4.15 Monitoring Functions

4.15 Monitoring Functions
Measured Values
Current sum
- SUM.ΙTRESHOLD
- SUM.FACTORΙ
Current symmetry
- BAL.FACTORΙ
- BAL.ΙLIMIT
- T BAL.ΙLIMIT
Broken conductor
Voltage Balance
- BAL.FACTORV
- BAL.VLIMIT
- T BAL.VLIMIT
Voltage phase sequence
non-symmetrical voltages
(Fuse-Failure-Monitor)
- FFM V>
- FFM Ι<
three-phase measuring voltage failure
(Fuse-Failure-Monitor)
- FFM VMEAS <
284
= | Ι + Ι + Ι
Ι
F A B
SUM.I TRESHOLD · Ι
for Ι = 1 A 0.10 A to 2.00 A
Nom
for Ι = 5 A 0.50 A to 10.00 A
Nom
0.00 to 0.95
| Ι |/| Ι | < BAL.FACTORΙ
min max
as long as Ι
max
0.10 to 0.95
for Ι = 1 A 0.10 A to 1.00 A
Nom
= 5 A 0.50 A to 5.00 A
for Ι
Nom
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)
| V |/| V
min max
as long as | V
0.58 to 0.95
10 V to 100 V
5 s to 100 s
V leads V leads V
A B
as long as | V
3 · V > FFM V> ODER 3 · V
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
Nom
= 5 A 0.50 A to 5.00 A
for Ι
Nom
all V < FFM VMESS <
Ph-E
AND at the same time
all ΔΙ < FFM Ι
Ph
AND
all Ι > (Ι > (Dist.))
Ph Ph
OR
all V < FFM VMESS <
Ph-E
AND at the same time
alle Ι < (Ι > (Dist.))
Ph Ph
AND
alle Ι > 40 mA
Ph
2 V to 100 V
+ k · Ι | >
C E
Ι
+ SUM.FACTORΙ ·Σ | Ι |
N
Increments 0.01 A
Increments 0.01 A
Increments 0.01
/Ι > BAL.ΙLIMIT/Ι
N N
Increments 0.01
Increments 0.01 A
Increments 0.01 A
Increments 1 s
| < SYM.FAK.V
| > SYM.VGRENZ
max
Increments 0.01
Increments 1 V
Increments 1 s
C
|, | V | , | V | > 40 V/√3
A B C
> FFM V>
2
< FFM Ι<
2
Increments 1 V
Increments 0.01 A
Increments 0.01 A
delta
Increments 1 V
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018