Interlocking For Double Cb Bay Db (3) - ABB REL650 Applications Manual

1MRK 506 334-UUS A
11.5.9
11.5.9.1
Application manual
• 989G_OP = 1
• 989G_CL = 0
If, in this case, line voltage supervision is added, then rather than setting 989 to open state,
specify the state of the voltage supervision:
• 989_OP = VOLT_OFF
• 989_CL = VOLT_ON
If there is no voltage supervision, then set the corresponding inputs as follows:
• VOLT_OFF = 1
• VOLT_ON = 0

Interlocking for double CB bay DB (3)

Application
The interlocking for a double busbar double circuit breaker bay including DB_BUS_A
(3), DB_BUS_B (3) and DB_LINE (3) functions are used for a line connected to a double
busbar arrangement according to figure 183.
Section 11
Control
375