
F.14
SEL-700G Relay
Instruction Manual
Date Code 20170814
IEC 61850 Communications
Logical Node Extensions
Table F.9 defines the MDST data class, Demand Metering Statistics. This
class is a collection of demand currents and energy.
Tmp09
MV
Temperature 9
E
Tmp10
MV
Temperature 10
E
Tmp11
MV
Temperature 11
E
Tmp12
MV
Temperature 12
E
a
Transient data objects–the status of data objects with this designation is momentary and
must be logged or reported to provide evidence of their momentary state.
b
M: Mandatory, O: Optional, C: Conditional, E: Extension.
Table F.9
Demand Metering Statistics Logical Node Class Definition
Data Object
Name
Common
Data
Class
Explanation
T
a
a
Transient data objects–the status of data objects with this designation is momentary and
must be logged or reported to provide evidence of their momentary state.
M/O/C/E
b
b
M: Mandatory, O: Optional, C: Conditional; E: Extension.
MDST Class
LNName
The name shall be composed of the
class name, LN-Prefix, and LN-
Instance-ID according to IEC 61850-7-2.
Common Logical Node Information
LN shall inherit all Mandatory Data
from Common Logical Node Class.
M
Data Objects
Measured Values
DmdA
WYE
Demand currents
E
PkDmdA
WYE
Peak demand currents
E
SupWh
MV
Real energy supply (default supply
direction: energy flow towards busbar)
E
SupVArh
MV
Reactive energy supply (default supply
direction: energy flow towards busbar)
E
DmdWh
MV
Real energy demand (default demand
direction: energy flow from busbar
away)
E
DmdVArh
MV
Reactive energy demand (default
demand direction: energy flow from
busbar away)
E
Table F.8
Thermal Metering Data Logical Node Class Definition
(Sheet 2 of 2)
Data Object
Name
Common
Data
Class
Explanation
T
a
M/O/C/E
b
Содержание SEL-700G Series
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