Siemens siprotec 7SD5 User Manual

2.24 Ancillary Functions
431
7SD5 Manual
C53000-G1176-C169-1
2.24.9 Demand Measurement Setup
Long-term average values are calculated by 7SD5 and can be read out with the time
reference (date and time of the last update).
2.24.9.1 Long-term Average Values
The long-term averages of the three phase currents I
Lx
, the positive sequence com-
ponents I
1
for the three phase currents, and the real power P, reactive power Q, and
apparent power S are calculated within a set period of time and indicated in primary
values.
For the long-term average values mentioned above, the length of the time window for
averaging and the frequency with which it is updated can be set. The associated
minimum and maximum values can be reset, using binary inputs or by using the inte-
grated control panel in the DIGSI
®
operating program.
2.24.9.2 Settings
2.24.9.3 Information List
Addr. Parameter Setting Options Default Setting Comments
2801 DMD Interval 15 Min., 1 Sub
15 Min., 3 Subs
15 Min.,15 Subs
30 Min., 1 Sub
60 Min., 1 Sub
60 Min., 1 Sub Demand Calculation Intervals
2802 DMD Sync.Time On The Hour
15 After Hour
30 After Hour
45 After Hour
On The Hour Demand Synchronization Time
No. Information Type of In-
formation
Comments
833 I1dmd = MV I1 (positive sequence) Demand
834 Pdmd = MV Active Power Demand
835 Qdmd = MV Reactive Power Demand
836 Sdmd = MV Apparent Power Demand
963 IL1dmd= MV I L1 demand
964 IL2dmd= MV I L2 demand
965 IL3dmd= MV I L3 demand
1052 Pdmd Forw= MV Active Power Demand Forward
1053 Pdmd Rev = MV Active Power Demand Reverse
1054 Qdmd Forw= MV Reactive Power Demand Forward
1055 Qdmd Rev = MV Reactive Power Demand Reverse
www . ElectricalPartManuals . com

Siemens siprotec 7SD5 Specifications

General

Brand	Siemens
Model	siprotec 7SD5
Category	Relays
Language	English