Siemens siprotec SJ62, Руководство пользователя

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4 Technical Data
513
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
Min / Max Report
Fuse Failure Monitor
Local Measured Values Monitoring
Storage of Measured Values with date and time
Reset automatic Time of day adjustable (in minutes, 0 to 1439 min)
Time frame and starting time adjustable (in days, 1
to 365 days, and
∞
)
Manual Reset Using binary input
Using keypad
Via communication
Min/Max Values for Current
I
A
;
I
B
;
I
C
;
I
1
(positive sequence component)
Min/Max Values for Voltages V
A-N
; V
B-N
; V
C-N
;
V
1
(Positive Sequence Component);
V
A-B
; V
B-C
; V
C-A
Min/Max Values for Power S, P; Q, cos
ϕ
; frequency
Min/Max Values for Overload Protection
Θ
/
Θ
Trip
Min/Max Values for Mean Values I
Admd
; I
Bdmd
; I
Cdmd
;
I
1
(positive sequence component);
S
dmd
; P
dmd
; Q
dmd
Setting range of displacement voltage 3V0
above which voltage failure is detected 10 - 100 V
Setting range of ground current above
which voltage failure is assumed 0.1 - 1 A
Operation of the fuse failure monitor Depending on the settings and the MLFB, the
FFM operates with the measured or the calculat-
ed values V
N
and I
N
.
Current Asymmetry I
max
/ I
min
> balance factor, for I > I
balance limit
Voltage Asymmetry V
max
/V
min
> balance factor, for V > V
lim
Current Sum | i
A
+ i
B
+ i
C
+ k
I
· i
N
| > limit value, with 1 %
Current Phase Sequence Clockwise (ABC) / counter-clockwise (ACB)
Voltage Phase Sequence Clockwise (ABC) / counter-clockwise (ACB)
Limit Value Monitoring I
A
> limit value I
Admd
>
I
B
> limit value I
Bdmd
>
I
C
> limit value I
Cdmd
>
I
1
> limit value
I
1dmd
>
I
L
< limit value I
L
<
cos
ϕ
< lower limit value |cos
ϕ
|<
P > limit value of real power |P
dmd
| >
Q > limit value of reactive power | Q
dmd
| >
S > limit value of apparent power S
dmd
>
Pressure < lower limit value Press<
Temperature > limit value Temp>