576
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
USING SHARED OPERANDS IN METERING
CHAPTER 11: METERING
Figure 503: User-configurable metering logic operands window
The left side of this screen displays all operands that are currently available to the D90
Plus
.
The metering logic operands are displayed by selecting the
Metering
tree item. Each
operand can be renamed with a user-specified value to provide additional information or
match specific applications.
User Configured Event Name
Range: up to 20 alphanumeric characters
Default: ---
Each available metering logic operand can be renamed to a user-specified value. This
feature allows users to rename operands to allow for clearer identification or to match
specific applications. The new operand name will appear in protection and automation
logic, in settings that take operands as their value, and in event reports.
Metering logic operands
The following metering logic operands are available for the D90
Plus
. They are listed
alphabetically by operand syntax. The definitions listed below reflect the default operand
names. If desired, these operands can be assigned user-defined names through the
Settings > Configure FlexOperands
menu item.
Data logger operands
D LOG CH1 HI ALM....................................Asserted while the data logger channel 1 high alarm is active.
D LOG CH1 HI-HI ALM..............................Asserted while the data logger channel 1 high-high alarm is
active.
D LOG CH1 LO ALM...................................Asserted while the data logger channel 1 low alarm is active.
D LOG CH1 LO-LO ALM............................Asserted while the data logger channel 1 low-low alarm is
active.
D LOG CH2 ...
................................................The operands listed above are also available for data loggers 2
through 16.
Phasor measurement unit operands
PMU 1 CURR TRIGGER..............................Asserted when the overcurrent trigger of phasor measurement
unit 1 operates.
