Synchronism and energizing
check for double circuit breakers
and voltage selection
ABB Network Partner AB
1MRK 580 167-XEN
Page 5 - 45
Version 1.0-00
4.3.3 Energizing in both
directions (DLLB or
DBLL)
1 Change the MMI settings AutoEnerg and ManEnerg to Both.
2 Apply a single-phase voltage of 30% U
r
/sqr3 to the U-line (UL1) and
a single-phase voltage of 100% U
r
/sqr3 to the U-bus (U5).
3 Check that the “SYN1-AUTOOK” and “SYN1-MANOK” outputs
are activated.
4 Change the connection so that the U-line (UL1) is equal to100% U
r
/
sqr3
and the U-bus (U5) is equal to 30% U
r
/sqr3.
5 The outputs should still be activated.
6 The test can be repeated with different values on the U-bus and the U-
line.
7 Restore the equipment to normal or desired settings.
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