ABB RER620, Technical Manual

Page: 317 / 584

1MAC309294-MB F
Section 5
Control functions
RER620 311
Technical Manual
Example 1
The sequence is implemented by two shots which have the same reclose time for all
protection functions, namely 50P-1, 51P and 51N/G. The initiation of the shots is done by
activating the trip signals of the protection functions.
Figure 162: Autoreclose sequence with two shots
t
HSAR
Time delay of high-speed autoreclosing, here:
First reclose time
t
DAR
Time delay of delayed autoreclosing, here:
Second reclose time
t
Protection
Operating time for the protection stage to clear the fault
t
CB_O
Operating time for opening the circuit breaker
t
CB_C
Operating time for closing the circuit breaker
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:
Figure 163: Two shots with three initiation lines
Table 295: Settings for configuration example 1
Setting name Setting value
Shot number CBB1 1
Init signals CBB1
7 (lines 1,2 and 3 = 1+2+4 = 7)
First reclose time 0.3s (an example)
Shot number CBB2
2
Init signals CBB2 7 (lines 1,2 and 3 = 1+2+4 = 7)
Second reclose time
15.0s (an example)