ABB Relion 670 Series Applications Manual page 397

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1MRK 511 401-UEN Rev. K

The interlocking for 1 1/2 breaker diameter (BH_CONN, BH_LINE_A, BH_LINE_B) functions are

used for lines connected to a 1 1/2 breaker diameter according to figure 202.

IEC04000513 V1 EN-US

Figure 202: Switchyard layout 1 1/2 breaker

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

the connections from a line to a busbar. BH_CONN is the connection between the two lines of

the diameter in the 1 1/2 breaker switchyard layout.

For a 1 1/2 breaker arrangement, the modules BH_LINE_A, BH_CONN and BH_LINE_B must be

Configuration setting

For application without QB9 and QC9, just set the appropriate inputs to open state and

disregard the outputs. In the functional block diagram, 0 and 1 are designated 0=FALSE and

If, in this case, line voltage supervision is added, then rather than setting QB9 to open state,

specify the state of the voltage supervision:

QB9_OP = VOLT_OFF

QB9_CL = VOLT_ON

Bay control REC670

Application manual

en04000513.vsd

Relion rec670