2.11 Monitoring Functions
194
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
2.11.2.1 Description
Supervision with
Two Binary Inputs
When using two binary inputs, these are connected according to Figure 2-62, parallel
to the associated trip contact on one side, and parallel to the circuit breaker auxiliary
contacts on the other.
Figure 2-62
Principle of the trip circuit monitoring with two binary inputs
Supervision with two binary inputs not only detects interruptions in the trip circuit and
loss of control voltage, it also supervises the response of the circuit breaker using the
position of the circuit breaker auxiliary contacts.
Depending on the conditions of the trip contact and the circuit breaker, the binary
inputs are activated (logical condition "H" in Table 2-10), or not activated (logical con-
dition "L").
In healthy trip circuits the condition that both binary inputs are not actuated (”L") is only
possible during a short transition period (trip contact is closed, but the circuit breaker
has not yet opened.) A continuous state of this condition is only possible when the trip
circuit has been interrupted, a short-circuit exists in the trip circuit, a loss of battery
voltage occurs, or malfunctions occur with the circuit breaker mechanism. Therefore,
it is used as monitoring criterion.
Table 2-10
Condition table for binary inputs, depending on RTC and CB position
No.
Trip contact
Circuit
breaker
52a Contact
52b Contact
BI 1
BI 2
1
Open
Closed
Closed
Open
H
L
2
Open
Open
Open
Closed
H
H
3
Closed
Closed
Closed
Open
L
L
4
Closed
Open
Open
Closed
L
H
Содержание siprotec SJ62
Страница 3: ...3 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 9: ...Preface 9 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 21: ...Contents 19 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 35: ...1 Introduction 33 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 365: ...2 Functions 363 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 443: ...3 Mounting and Commissioning 441 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 529: ...4 Technical Data 527 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 699: ...A Appendix 697 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 701: ...Literature 699 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 714: ...Index 712 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 715: ...Index 713 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...