12
Operation
indicators
The auto-reclose module is provided with a
programmable DEF.TRIP operation indicator.
Normally, the operation indicator is lit, if the
last AR shot selected is unsuccessful. The opera-
tion indicator remains lit until reset, either via
the push-buttons on the front panel, an external
control command or over the serial bus.
The yellow LEDs above the digital display show
the AR line that caused the operation. The
LEDs are reset by the initiation of a new shot or
when the reclaim time elapses.
The left-most red figure on the display is also
used for operation indication. The indications
A1...A6 can be manually reset. Unless reset they
disappear as soon as the next AR shot starts. The
other indications are always automatically reset.
Indication Explanation
Resetting
1
AR shot 1 in progress
automatic resetting
2
AR shot 2 in progress
automatic resetting
3
AR shot 3 in progress
automatic resetting
4
AR shot 4 in progress
automatic resetting
5
AR shot 5 in progress
automatic resetting
6
Final trip activated
automatic resetting
7
Discriminating time running
automatic resetting
8
Reclaim time running
automatic resetting
A1
CB opening failed
automatic or manual reset
A2
CB closing failed
automatic or manual reset
A3
Closing inhibited after AR (ASYNC, CINH)
automatic or manual reset
A4
Pre-alarm signal from maintenance monitor
automatic or manual reset
A5
Alarm signal from maintenance monitor
automatic or manual reset
A6
AR initiating signal active > 2 minutes
automatic or manual reset
Once the self-supervision system has detected a
permanent fault the red self-supervision alarm
indicator is lit. At the same time the relay
module delivers a control signal to the self-
supervision output relay of the protection as-
sembly. In addition, in most cases a fault code is
lit on the display of the module. This fault code
that consists of a red "1" and a green code
number indicates the nature of the fault and
cannot be reset. It should be recorded and stated
when service is ordered.
Summary of Contents for SPAA 341 C /E351
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