![background image](http://html.mh-extra.com/html/abb/615-series-ansi/615-series-ansi_technical-manual_4665430.webp)
1MAC050144-MB C
Section 6
Supervision functions
615 series ANSI
423
Technical Manual
Figure 219:
Functional module diagram for estimating the life of the circuit breaker
Circuit breaker life estimator
The circuit breaker life estimator module calculates the remaining life of the circuit
breaker. If the tripping current is less than the rated operating current set with the
Rated
Op current
setting, the remaining operation of the breaker reduces by one operation. If the
tripping current is more than the rated fault current set with the
Rated fault current
setting,
the possible operations are zero. The remaining life of the tripping current in between these
two values is calculated based on the trip curve given by the manufacturer. The
Op number
rated
and
Op number fault
parameters set the number of operations the breaker can
perform at the rated current and at the rated fault current, respectively.
The remaining life is calculated separately for all three phases and it is available as a
monitored data value
CB_LIFE_A (_B,_C)
. The values can be cleared by setting the
parameter
CB wear values
in the clear menu from WHMI or LHMI.
Alarm limit check
When the remaining life of any phase drops below the
Life alarm level
threshold setting,
the corresponding circuit breaker life alarm
CB_LIFE_ALM
is activated.
It is possible to deactivate the
CB_LIFE_ALM
alarm signal by activating the binary input
BLOCK
. The old circuit breaker operation counter value can be taken into use by writing
the value to the
Initial CB Rmn life
parameter and resetting the value via the clear menu
52 CMx.rem.life
from WHMI or LHMI under the
Clear CB wear values
menu.
6.1.4.7
Circuit breaker spring charged indication
The circuit breaker spring charged indication subfunction calculates the spring charging
time.
The operation of the subfunction can be described by using a module diagram. All the
modules in the diagram are explained in the next sections.
Clearing
CB wear values
also resets the operation counter.
Содержание 615 Series ANSI
Страница 1: ...Relion Protection and Control 615 series ANSI Technical Manual ...
Страница 2: ......
Страница 29: ...1MAC050144 MB C Section 615 series ANSI 22 Technical Manual ...
Страница 389: ...Section 4 1MAC050144 MB C Protection functions 382 615 series ANSI Technical Manual ...
Страница 485: ...Section 6 1MAC050144 MB C Supervision functions 478 615 series ANSI Technical Manual ...
Страница 635: ...Section 10 1MAC050144 MB C Other functions 628 615 series ANSI Technical Manual ...
Страница 707: ...Section 15 1MAC050144 MB C Applicable standards and regulations 700 615 series ANSI Technical Manual ...
Страница 711: ...Section 16 1MAC050144 MB C Glossary 704 615 series ANSI Technical Manual ...
Страница 712: ......