GE D90 Plus Instruction Manual page 383

Line distance protection system

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CHAPTER 7: PROTECTION

Breaker flashover settings

LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL

Select the Settings > Protection > Control > Breaker Flashover menu to open the breaker

flashover configuration window.

Figure 312: Breaker flashover configuration settings

The following settings are available for each breaker flashover element.

Range: Enabled, Disabled

Default: Disabled

This setting enables and disables the breaker flashover protection element.

Range: LINE (SRC 1), BKR 1 (SRC 2), BKR 2 (SRC 3)

Default: LINE (SRC 1)

This setting specifies a signal source used to provide three-phase voltages and three-

phase currents from one side of the current breaker. The source is selected by this

setting and must be configured with breaker phase voltages and currents, even if only

three VTs are available across the breaker.

Range: None, LINE (SRC 1), BKR 1 (SRC 2), BKR 2 (SRC 3)

Default: varies with UR

This setting specifies a signal source used to provide another set of three-phase

voltages whenever six VTs are available across the breaker.

Status Closed A, Status Closed B, Status Closed C

Range: any FlexLogic operand or shared operand

Default: BKR1 CLOSED

These settings specify operands to indicate the open status of the breaker. A separate

operand can be selected to detect individual breaker pole status and provide flashover

detection. The recommended setting is 52a breaker contact or another operand

defining the breaker poles open status.

-series model; see the EnerVista UR

CONTROL ELEMENTS

Setup software