ABB RED615 Technical Manual page 722

Section 9
Control functions
716
Example 1.
The sequence is implemented by two shots which have the same reclosing time for
all protection functions, namely I>>, I> and Io>. The initiation of the shots is done
by activating the operating signals of the protection functions.
A070887 V1 EN
Figure 390: Autoreclose sequence with two shots
t Time delay of high-speed autoreclosing, here:
HSAR
t Time delay of delayed autoreclosing, here:
DAR
t Operating time for the protection stage to clear the fault
Protection
t Operating time for opening the circuit breaker
CB_O
t Operating time for closing the circuit breaker
CB_C
In this case, the sequence needs two CBBs. The reclosing times for shot 1 and shot
2 are different, but each protection function initiates the same sequence. The CBB
sequence is as follows:
INIT_1 (I>>)
INIT_2 (I>)
INIT_3 (Io>)
A071270 V2 EN
Figure 391: Two shots with three initiation lines
Shot 1
(CBB1)
0.3s
1YHT530004D05 D
First reclose time
Second reclose time
Lockout
Shot 2
(CBB2) Lockout
15.0s
Lockout
Technical Manual
615 series