P521/EN AD/B21
Update Documentation
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MiCOM P521
Block Ie>?
No
Select the possibility to block the instantaneous signal Ie>
in the event of a circuit breaker failure detection. Select
Yes or No.
3.5.4.13
Circuit breaker supervision sub menu
The CB Supervision sub menu makes it possible to enable the circuit breaker
supervision and monitoring function and the various settings associated with this
function.
AUTOMAT. CTRL
Heading of the AUTOMAT. CTRL Menu. To gain access to
the CB Supervision menu, press
2
,
6
, 6 times,
2
,
followed by
6
13 times.
CB Supervision
Heading of the CB Supervision sub menu.
To gain access to the sub menu points, press
2
.
TC Supervision
Yes
Enables / Disables the trip circuit supervision function.
Select Yes or No. If the user selects (Yes), the function is
active. If the user selects (No) the TC supervision is
disabled (go to CB Open Time menu).
t Trip Circuit
t SUP
200 ms
Selects the Trip circuit supervision time. Select from 0.1 s
to 10s in steps of 10 ms using
8
or
2
and validate your
choice using
5
.
CB Open S'vision
Yes
Enables / Disables the CB operating time supervision
function. Select Yes or No. If the user selects (Yes) the
following menu is displayed. If the user selects (No) the
CB operating time supervision function is disabled (go to
CB Close menu).
CB Open Time
50 ms
Selects the maximum allowable CB operating time (tCBO).
Select from 50 ms to 1.0 s in steps of 10 ms using
8
or
2
and validate your choice using
5
.
CB Close S'vision
Yes
Enables / Disabled the CB closing time supervision
function. Select Yes or No. If the user selects (Yes), the
following menu is displayed. If the user selects (No) the
CB closing time supervision function is disabled (go to CB
Open Alarm menu).
CB Close Time
50 ms
Selects the maximum allowable CB closing time (tCBC).
Select from 50 ms to 1.0 s in steps of 10 ms using
8
or
2
and validate your choice using
5
.
