180000059-IEC19000464-1-en.vsdx
C
O
B
0
1
2
3
4
5
6
(t)
t
7
t
6
t
4
t
2
t
5
t
3
t
1
t
P
t
W
t
S
C
O
A
0
1
2
3
4
5
6
A
B
IEC19000464 V1 EN-US
Figure 60: Resulting composite dead time (Source: Guidelines for autoreclosure in
electrical power systems published by the German Association of Power
Utilities VDEW)
Where,
A: circuit-breaker 1
B: circuit-breaker 2
C: closed position
O: open position
0: start
1: trip signal
2: contacts part
3: current interrupted
4: close signal
5: current flows again
6: contacts make
t
2
: reclosing time
t
1
: tripping time
t
4
: dead time
t
3
: arc extinction time
t
6
: duration of interrupt
t
5
: pre-ignition time
t
7
: resulting dead time
t
p
: dead time
t
s
: inhibit time
t
w
: fault duration
Section 5
1MRK 505 406-UEN B
Bay protection functions
156
Bay protection functions REB500
Technical manual
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