ABB RELION 620 Series Technical Manual page 723

1MAC504801-IB E
620 series ANSI
Technical Manual
• Str 2 delay shot 1
• Str 2 delay shot 2
• Str 2 delay shot 3
• Str 2 delay shot 4
Time delay settings for the DEL_INIT_3 signal
• Str 3 delay shot 1
• Str 3 delay shot 2
• Str 3 delay shot 3
• Str 3 delay shot 4
Time delay settings for the DEL_INIT_4 signal
• Str 4 delay shot 1
• Str 4 delay shot 2
• Str 4 delay shot 3
• Str 4 delay shot 4
Normally, only two or three reclosing attempts are made. The third and fourth attempts are
used to provide the so-called fast final trip to lockout.
GUID-36912067-F77E-457B-87D8-637CE0FA73A6 V1 EN
Figure 362: Autoreclosing configuration example
Delayed DEL_INIT_2...4 signals are used only when the autoreclosing shot is
initiated with the pickup signal of a protection stage. After a pickup delay, the AR function
opens the circuit breaker and an autoreclosing shot is initiated. When the shot is initiated
with the trip signal of the protection, the protection function trips the circuit breaker and
simultaneously initiates the autoreclosing shot.
Section 9
Control functions
717