Siemens 7SJ85 - Information List; Stage with User-Defined Characteristic Curve; Description

Addr. Parameter C Setting Options Default Setting
_:13831:2 Definite-T 1:Operate &
flt.rec. blocked
•
no
•
yes
no
_:13831:3 Definite-T 1:Threshold 0.80 p.u. to 10.00 p.u. 5.00 p.u.
_:13831:6 Definite-T 1:Operate
delay
0.01 s to 3600.00 s 0.03 s
Information List
No. Information Data Class
(Type)
Type
General
_:2311:301 General:VpeakA MV O
_:2311:302 General:VpeakB MV O
_:2311:303 General:VpeakC MV O
Group indicat.
_:4501:55 Group indicat.:Pickup ACD O
_:4501:57 Group indicat.:Operate ACT O
Definite-T 1
_:13831:81 Definite-T 1:>Block stage SPS I
_:13831:54 Definite-T 1:Inactive SPS O
_:13831:52 Definite-T 1:Behavior ENS O
_:13831:53 Definite-T 1:Health ENS O
_:13831:55 Definite-T 1:Pickup ACD O
_:13831:56 Definite-T 1:Operate delay expired ACT O
_:13831:57 Definite-T 1:Operate ACT O
Stage with User-Defined Characteristic Curve
Description
This stage is structured the same way as the stage with a voltage-dependent characteristic (see chapter
7.6.3.1 Description). The only difference is that you can define the characteristic curve as desired. This means
that you can also define a dropout characteristic curve. This makes the dropout delay parameter superfluous
and unneeded.
User-Defined Characteristic Curve
With the user-defined characteristic curve, you can define the operate curve point by point using up to 30
value pairs of voltage and time. The device uses linear interpolation to calculate the characteristic curve from
these values. You can also define a dropout characteristic curve if you wish.
Pickup and Dropout Behavior with the User-Defined Characteristic Curve
If the measurand Û/V
C-rated
(t) exceeds the threshold value, the characteristic is followed. An integrating
method of measurement summarizes the weighted time. The weighted time results from the characteristic
curve. This means that the time associated with the present measured value is determined from the character-
istic curve. Once the weighted time exceeds the value 1, the stage operates.
If the measured value falls below 95 % of the set threshold value, the dropout is initiated. The pickup will be
indicated as clearing. The weighted time results from the dropout characteristic curve. The integral value is
reduced until it reaches 0.
7.6.4.4
7.6.5
7.6.5.1
Capacitor Bank Protection
7.6 Peak Overvoltage Protection for Capacitors
SIPROTEC 5, Overcurrent Protection, Manual 1029
C53000-G5040-C017-8, Edition 07.2017