Delayed Initiation Lines - ABB RELION REX640 Technical Manual

Section 9
Control functions
9.9.6.4
1530
t or Operating time for the I> or Io> protection stage to clear the fault
l> lo>
t Operating time for opening the circuit breaker
CB_O
t Operating time for closing the circuit breaker
CB_C
In this case, the number of needed CBBs is three, that is, the first shot's reclosing time
depends on the initiation signal.
INIT_1 (I>>)
INIT_2 (I>)
INIT_3 (Io>)
GUID-44CB6634-B478-463A-8C4E-E016AB5809C8 V1 EN
Figure 808: Three shots with three initiation lines
If the sequence is initiated from the INIT_1 line, that is, the overcurrent protection
high stage, the sequence is one shot long. If the sequence is initiated from the INIT_2
or INIT_3 lines, the sequence is two shots long.
Table 1401: Settings for configuration example 2
Setting name
Shot number CBB1
Init signals CBB1
First reclose time
Shot number CBB2
Init signals CBB2
Second reclose time
Shot number CBB3
Init signals CBB3
Third reclose time

Delayed initiation lines

The autoreclose function consists of six individual autoreclose initiation lines
INIT_1...INIT 6 and three delayed initiation lines:
• DEL_INIT_2
• DEL_INIT_3
• DEL_INIT_4
Shot 1
(CBB1)
1.0s
Shot 1
(CBB2)
0.2s
Setting value
1
1 (line 1)
0.0 s (an example)
1
6 (lines 2 and 3 = 2+4 = 6)
0.2 s (an example)
2
6 (lines 2 and 3 = 2+4 = 6)
10.0 s
1MRS759142 C
Lockout
Shot 2
Lockout
(CBB3)
Lockout
10.0s
Technical Manual
REX640