Technical Data
4.7 Monitoring Functions
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
254
4.7
Monitoring Functions
Measured values
Current sum
I
F
= |
I
L1
+
I
L2
+
I
L3
+ k
I
·
I
E
| >
SUM.I Threshold ·
I
N
+ SUM.Factor
I
·
Σ
|
I
|
- SUM.
I
Limit
for
I
N
= 1 A 0.10 A to 2.00 A
Increments 0.01 A
for
I
N
= 5 A 0.50 A to 10.00 A
Increments 0.01 A
- SUM.FACTOR
I
0.00 to 0.95
Increments 0.01
Voltage sum
U
F
= | U
L1
+ U
L2
+ U
L3
+ k
U
· U
EN
| > 25 V
Current Symmetry
|
I
min
|/|
I
max
| < BAL.FACTOR.
I
as long as
I
max
/
I
N
> BAL.
I
LIMIT/
I
N
- BAL.FACTOR.
I
0.10 to 0.95
Increments 0.01
- BAL.
I
LIMIT
for
I
N
= 1 A 0.10 A to 1.00 A
Increments 0.01 A
for
I
N
= 5 A 0.50 A to 5.00 A
Increments 0.01 A
- T BAL.
I
LIMIT
5 s to 100 s
Increments 1 s
Broken conductor
One conductor without current, the others with current
(monitoring of current transformer circuits on current step
change in one phase without residual current)
Voltage Symmetry
| U
min
|/| U
max
| < BAL.FACTOR.U
as long as | U
max
| > BAL.ULIMIT
- BAL.FACTOR.U
0.58 to 0.95
Increments 0.01
- BAL.ULIMIT
10 V to 100 V
Increments 1 V
- T BAL.ULIMIT
5 s to 100 s
Increments 1 s
Voltage phase sequence
U
L1
before U
L2
before U
L3
as long as | U
L1
|, | U
L2
| , | U
L3
| > 40 V/
√
3
Non-symmetrical voltages
(Fuse failure monitoring)
3 · U
0
> FFM U> or 3 · U
2
> FFM U>
and at the same time
3 ·
I
0
< FFM
I
< and 3 ·
I
2
< FFM
I
<
- FFM U>
10 V to 100 V
Increments 1 V
- FFM
I
<
for
I
N
= 1 A 0.10 A to 1.00 A
Increments 0.01 A
for
I
N
= 5 A 0.50 A to 5.00 A
Increments 0.01 A
Three-phase measuring voltage failure
(fuse failure monitoring)
All U
Ph-E
< FFM UMEAS <
and at the same time
all
Δ
I
Ph
< FFM
I
delta
and
All
I
Ph
> (
I
Ph
> (Dist.))
or
All U
Ph-E
< FFM UMEAS <
and at the same time
All
I
Ph
< (
I
Ph
> (Dist.))
and
All
I
Ph
> 40 mA
- FFM UMEAS <
2 V to 100 V
Increments 1 V
- FFM
I
delta
for
I
N
= 1 A 0.05 A to 1.00 A
Increments 0.01 A
for
I
N
= 5 A 0.25 A to 5.00 A
Increments 0.01 A
- T U-Monitoring (wait time for additional measured
voltage failure monitoring)
0.00 s to 30.00 s
Increments 0.01 s
- T UT mcb
0 ms to 30 ms
Increments 1 ms
Summary of Contents for Siprotec 7VK61
Page 8: ...Preface SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 8 ...
Page 14: ...Contents SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 14 ...
Page 316: ...Literature SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 316 ...
Page 328: ...Glossary SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 328 ...
