ABB RER620 Technical Manual page 251

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RER620
Technical Manual
POS_CLOSE_A
START_A
BLOCK
CB_ FAULT
1 5 0 m s
P O S _ C L O S E _ A
T im e r 1 e la p s e d
S T A R T _ A
B L O C K
Timer 1 elapsed
POS_CLOSE_A
CB_ FAULT
BLOCK
Figure 114: Functional module diagram, typical for Phase A, when single phase
operation mode is selected
The following figure is applicable when 3 phase operation mode is selected in the unit. The
signal input POSCLOSE is typically the status input of a three pole breaker / recloser. In
case there are separate pole operating mechanisms, the input is OR combination of all three
phase inputs either through parallel connection of 52a inputs wired to a binary input or
through a logic.
Timer 1
t
Start
logic
T O N
&
&
&
CLS_RET_A
RETRY LOGIC
Section 4
Protection functions
Close
retry CLS_RET_A
logic
&
S e t
T im e r s ta
R e s e t
o r
S T A R T
L O G IC
245