Settings; Information List; Current-Sum Supervision; Overview Of Functions - Siemens 7SJ82 Manual

Parameter: Release threshold
•
Recommended setting value (_:101) Release threshold = 0.5 A for I
A for I = 5 A
rated
The Release threshold parameter is used to set the lower limit of the maximum phase current (I
Parameter: Operate delay
•
Recommended setting value (_:6) Operate delay = 5.00 s
Set the Operate delay parameter so that overfunctions due to disturbing influences (such as switching
operations) are avoided.
9.3.10.5

Settings

Addr.
Supv. balan. I
_:1
_:101
_:102
_:6
9.3.10.6

Information List

No.
Supv. balan. I
_:82
_:54
_:52
_:53
_:71

Current-Sum Supervision

9.3.11
9.3.11.1

Overview of Functions

In healthy system operation, the sum of all currents at one measuring point must be approximately 0. The
Current-sum supervision function monitors the sum of all currents of one measuring point in the secondary
circuit. It detects connection errors during commissioning or short circuits and interruptions in the secondary
circuit.
For summation of the currents, the device requires the phase currents and the ground current of the current
transformer neutral point or of a separate ground-current transformer at this measuring point. Select the
following connection variant:
•
Current-transformer connections connected to 3 current transformers and the neutral point (see
Figure A-12
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
Parameter C
Supv. balan. I:Mode
Supv. balan. I:Release 1 A @ 100 Irated 0.030 A to 35.000 A
threshold
5 A @ 100 Irated 0.15 A to 175.00 A
1 A @ 50 Irated
5 A @ 50 Irated
1 A @ 1.6 Irated
5 A @ 1.6 Irated
Supv. balan. I:Threshold
min/max
Supv. balan. I:Delay
supervision alarm
Information
Supv. balan. I:>Block function
Supv. balan. I:Inactive
Supv. balan. I:Behavior
Supv. balan. I:Health
Supv. balan. I:Failure
in the Attachment)
9.3 Supervision of the Secondary System
= 1 A or 2.5
rated
Setting Options
•
off
•
on
•
test
0.030 A to 35.000 A
0.15 A to 175.00 A
0.001 A to 1.600 A
0.005 A to 8.000 A
0.10 to 0.95
0.00 s to 100.00 s
Data Class
(Type)
SPS
SPS
ENS
ENS
SPS
Supervision Functions
).
max
Default Setting
off
0.500 A
2.50 A
0.500 A
2.50 A
0.500 A
2.500 A
0.50
5.00 s
Type
I
O
O
O
O
1275