Interlocking For Bus-Section Disconnector A1A2_Dc (3); Application; Signals In Single Breaker Arrangement - ABB REB670 Applications Manual

Busbar protection 2.1 ansi, relion 670 series

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1MRK 505 337-UUS -

Application manual

Interlocking for bus-section disconnector A1A2_DC (3)

The interlocking for bus-section disconnector (A1A2_DC, 3) function is used for one bus-

section disconnector between section 1 and 2 according to figure 144. A1A2_DC (3)

function can be used for different busbars, which includes a bus-section disconnector.

ANSI04000492 V1 EN

Switchyard layout A1A2_DC (3)

The signals from other bays connected to the module A1A2_DC are described below.

If the busbar is divided by bus-section disconnectors, the condition no other disconnector

connected to the bus-section must be made by a project-specific logic.

The same type of module (A1A2_DC) is used for different busbars, that is, for both bus-

section disconnector A1A2_DC and B1B2_DC. But for B1B2_DC, corresponding

signals from busbar B are used.

ANSI04000493 V1 EN

Busbars divided by bus-section disconnectors (circuit breakers)

To derive the signals:

en04000492_ansi.vsd

en04000493_ansi.vsd