AZT-9
18
ZPrAE Sp. z o.o.
Number of recorded disturbances depends on the recording time set. For 0.6 s
setting a maximum number of recorded curves is 210. One record is possible in case of 60
s.
WARNING!
Change in the recording time deletes automatically the previous
records.
4.12. Signalling of circuit breaker inspection
The AZT-9 protection device makes it possible to maintain the state of full readiness
of the circuit breaker thanks to the built-in control functions that improve its maintenance.
Maintenance functions of the circuit breaker include: counting of the number of trip outs,
measurement of circuit breaker time, cumulative sum of the values of tripped out currents
for individual phases, cumulative sum of the square of the values of tripped out currents for
individual phases.
The following parameters can be set in the group of settings related to the maintenance of
the circuit breaker:
-
Maximum number of trip outs,
-
Maximum time of circuit breaker opening,
-
Maximum sum of currents in a given phase,
-
Maximum sum of the square of the currents in a given phase.
Internal logic signal is assigned to each setting. It is activated when the controlled
parameter exceeds the set value.
Generated logic signal can be sent to a configurable relay, LED, magnetic indicator
or logic gate input to warn about a malfunction of the circuit breaker or required
maintenance.
4.13. Configuration of the AZT device system.
Group of “AZT configuration” settings allows for setting of the following parameters:
-
Change password
– allows for entering a password that limits the access to the
device configuration function,
-
Set time
– allows for setting a local time of the AZT-9. If an MGB module is
connected relay time is synchronised automatically with the time set in the MGB
module.
-
Optional modules
– enables support for optionally connected modules.
