CHAPTER 5: 350 OPC–UA COMMUNICATION STANDARD OPC–UA POINT LISTS
SR3 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE 5-3
OPC–UA Point Lists
• Modeling for the following:
Events
All digital signals available are defined as an event source. So, the Server connection is
declared as a unique event notifier.
Alarms
The alarms are not supported.
Commands
The Open&Close breaker and Reset commands have been implemented as Method
services.
• The OPC-UA server has implemented the following Analog, Digital, Input, Logic and
Command points, as shown in the tables.
Table 5-1: Analog points
Data Description
W Real Power
VAr Reactive Power
VA Apparent Power
PF Power Factor
Freq Frequency
Vab PhA to PhB Voltage
Vab_ang Va angle
Vbc PhB to Ph CVoltage
Vbc_ang Vb angle
Vca PhCtoPhAVoltage
Vca_ang Vc angle
Va_mag Va magnitude
Va_ang Va angle
Vb_mag Vb magnitude
Vb_ang Vb angle
Vc_mag Vc magnitude
Vc_ang V cangle
Vn_mag Vn magnitude
Vn_ang Vn angle
Ia_mag Ia magnitude
Ia_ang Ia angle
Ib_mag Ib magnitude
Ib_ang Ib angle
Ic_mag Ic magnitude
Ic_ang Ic angle
Ig_mag Ground magnitude
Ig_ang Ground angle
In_mag Neutral magnitude
In_ang Neutral angle
Is_mag Sensitive Ground magnitude
Is_ang Sensitive Ground angle
Vaux_mag Auxiliary Voltage magnitude