Siemens 7SJ82, Manual

Page: 1265 / 1638

The phase rotation is important for protection functions which process phase, loop, and directional informa-
tion. You can set the phase sequence with the
Phase sequence
parameter in the function block General of
the power-system data (see chapter 6.1 Power-System Data ).
To supervise the phase rotation, the device compares the measured phase sequence with the set phase
sequence. For abnormal phase sequences, the indication
Failure
is generated.
The connection of the voltages to the device does not depend on the selected phase sequence. The connec-
tion diagrams are shown in chapter
A Appendix .
Release Condition
The supervision of the voltage phase rotation is carried out when all measured phase-to-phase voltages are
greater than 40 V.
Blocking of the Function
The following blockings reset the function completely:
•
Via the binary input signal
>Block function
from an external or internal source
•
Via a protection pickup
The pickup signal from a protection function blocks the indication
Failure
.
Operate delay
When the device detects an inverted phase-rotation direction for the duration of the
Operate delay
, the
indication
Failure
is generated.
Application and Setting Notes
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. Siemens recommends using the default setting.
Settings
Addr. Parameter C Setting Options Default Setting
Supv. ph.seq.V
_:1 Supv. ph.seq.V:Mode
•
off
•
on
•
test
off
_:6 Supv. ph.seq.V:Delay
supervision alarm 0.00 s to 100.00 s 5.00 s
Information List
No. Information Data Class
(Type) Type
Supv. ph.seq.V
_:82 Supv. ph.seq.V:>Block function SPS I
_:54 Supv. ph.seq.V:Inactive SPS O
_:52 Supv. ph.seq.V:Behavior ENS O
_:53 Supv. ph.seq.V:Health ENS O
_:71 Supv. ph.seq.V:Failure SPS O
9.3.7.4
9.3.7.5
9.3.7.6
Supervision Functions
9.3 Supervision of the Secondary System
SIPROTEC 5, Overcurrent Protection, Manual 1265
C53000-G5040-C017-8, Edition 07.2017