Shared Self-Test Operands - GE D90 Plus Instruction Manual

Line distance protection system

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CHAPTER 14: TESTING

Shared self-test operands

LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL

However, it is often desirable for an output from an element within one function can be

available to an element within another function. For instance, it may be useful for the

digital fault recorder to record the output operands of any protection element.

Consequently a fixed, predetermined set of operands is available as to each function as

shown below.

Figure 533: Default operand list by function

The content of each operand list is dependent on the selected order code.

The shared operands functionality expands upon this system. With this feature, an output

from any element can be assigned as a shared operand within the EnerVista UR

Setup software. These signals can then be assigned as inputs to other functions.

For example, assume that the

within the automation function. This operand would then be assigned as a shared

operand, and would subsequently become available to the automation function. A total of

64 operands may be assigned as shared operands within each function.

To share self-test operands with another primary function, select the shared operands

feature within the function menu. For example, to share self-test operands with the

metering function, select the Settings > Metering > Shared Operands menu item to open

the shared operands window.

protection operand is required as a signal

SHARED OPERANDS