Set Points (Measured Values); Limit Value Monitoring; Information List - Siemens siprotec 7SD5 User Manual

2 Functions
No. Information
10102 3U0min =
10103 3U0max =

2.24.11 Set Points (Measured Values)

SIPROTEC
values. If during operation a value reaches or exceeds one of these limits, the device
generates an alarm which is displayed as an operational indication. This can be con-
figured to LEDs and/or binary outputs, transferred via the interfaces and interconnect-
ed in DIGSI
further measured and metered values and allocate these via the DIGSI
In contrast to the actual protection functions the limit value monitoring function oper-
ates in the background; therefore it may not pick up if measured values are changed
spontaneously in the event of a fault and if protection functions are picked up. Further-
more, since a message is only issued when the limit value is repeatedly exceeded, the
limit value monitoring functions do not react as fast as protection functions trip signals.

2.24.11.1 Limit Value Monitoring

Set points can be set for the following measured and metered values:
• IL1dmd>: Exceeding a preset maximum average value in Phase L1.
• IL2dmd>: Exceeding a preset maximum average value in Phase L2.
• IL3dmd>: Exceeding a preset maximum average value in Phase L3.
• I1dmd>: Exceeding a preset maximum average value of the positive sequence
• |Pdmd|> : Exceeding a preset maximum average active power.
• |Qdmd|>: Exceeding a preset maximum average reactive power.
• |Sdmd|> : Exceeding a preset maximum average value of the apparent power.
• |cosϕ|< Falling below a preset power factor.

2.24.11.2 Information List

No. Information
- IL1dmd>
- IL2dmd>
- IL3dmd>
- I1dmd>
- |Pdmd|>
- |Qdmd|>
- Sdmd>
- PF<
273 SP. IL1 dmd>
274 SP. IL2 dmd>
434
Type of In-
formation
MVT
MVT
®
4 devices allow set point limits to be set for some measured and metered
®
CFC. In addition you can use DIGSI
system currents.
Type of In-
formation
LV
LV
LV
LV
LV
LV
LV
LV
OUT
OUT
Comments
Min. Zero Sequence Voltage 3U0
Max. Zero Sequence Voltage 3U0
®
CFC to configure set points for
Comments
Upper setting limit for IL1dmd
Upper setting limit for IL2dmd
Upper setting limit for IL3dmd
Upper setting limit for I1dmd
Upper setting limit for Pdmd
Upper setting limit for Qdmd
Upper setting limit for Sdmd
Lower setting limit for Power Factor
Set Point Phase L1 dmd>
Set Point Phase L2 dmd>
®
device matrix.
7SD5 Manual
C53000-G1176-C169-1