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>)
Shot 1
(CBB1)
1.0s
Shot 1
(CBB2)
0.2s
Shot 2
(CBB3)
10.0s
Lockout
Lockout
Lockout
Figure 555: 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 1004: Settings for configuration example 2
Setting name Setting value
Shot number CBB1 1
Init signals CBB1 1 (line 1)
First reclose time 0.0s (an example)
Shot number CBB2 1
Init signals CBB2 6 (lines 2 and 3 = 2+4 = 6)
Second reclose time 0.2s (an example)
Shot number CBB3 2
Init signals CBB3 6 (lines 2 and 3 = 2+4 = 6)
Third reclose time 10.0s
9.4.6.4 Delayed initiation lines
The auto-reclose function consists of six individual auto-reclose initiation lines
INIT_1...INIT 6 and three delayed initiation lines:
•
DEL_INIT_2
•
DEL_INIT_3
•
DEL_INIT_4
DEL_INIT_2 and INIT_2 are connected together with an OR-gate, as are inputs 3
and 4. Inputs 1, 5 and 6 do not have any delayed input. From the auto-reclosing
point of view, it does not matter whether INIT_x or DEL_INIT_x line is used for
shot initiation or blocking.
The auto-reclose function can also open the circuit breaker from any of the
initiation lines. It is selected with the
Tripping line
setting. As a default, all initiation
lines activate the OPEN_CB output.
Control functions
1MRS757644 H
1036 620 series
Technical Manual
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