ABB RELION 670 Series Technical Manual page 792

Generator protection

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Identification

Function description

Interlocking for breaker-and-a-half

Interlocking for breaker-and-a-half

Interlocking for breaker-and-a-half

Functionality

The interlocking for breaker-and-a-half diameter (BH_CONN(3), BH_LINE_A(3), BH_LINE_B(3))

functions are used for lines connected to a breaker-and-a-half diameter according to figure 419.

ANSI04000513 V1 EN-US

Figure 419: Switchyard layout breaker-and-a-half

Three types of interlocking modules per diameter are defined. BH_LINE_A (3) and BH_LINE_B (3)

are the connections from a line to a busbar. BH_CONN (3) is the connection between the two lines

of the diameter in the breaker-and-a-half switchyard layout.

identification

ANSI/IEEE C37.2

identification

device number

1MRK 502 066-UUS B

GUID-03F1A3BB-4A1E-49E8-88C6-10B3876F64DA v4

en04000513_ansi.vsd

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