Sices RN200, Руководство пользователя

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28 RN200 user manual
You can always open the circuit breaker.
When the operator presses the RNCB button, the controller always tries to open the circuit
breaker without load. Therefore, it tries to transfer the power from the inverters to the
generators (or to the mains) before opening the circuit breaker. If you want to open the RNCB
circuit breaker immediately (without waiting for the load transfer), just hold the button down for
at least 1 second.
If the button is pressed again while the controller is transferring the load to the generators or
to the mains, the previous opening command is simply cancelled.
The circuit breaker can be closed only if the following conditions are all verified:
•
There are no blocks.
•
The voltages and the frequency of the common bars are within tolerance for an
appropriate time.
In fact, closing of the circuit-breaker with voltages on the bars
out of tolerance is never allowed .
•
If no generator is in a "GCB not open" condition (or if this function is disabled).
If the conditions are verified, the controller commands the closure of RNCB as soon as the
operator presses the button.
Note: in this phase the inverters are stopped, because they
cannot be started if there is no voltage on the connection point (mains or generators).
The operator can use the START and STOP buttons to control the manual start or stop of the
inverters, but
only if the controller is in the MAN operating mode.
As an alternative to the button, the controller also accepts to use:
•
Commands through the communication ports (two separate commands are provided
for starting and stopping).
Note: in MAN RN200 it will never automatically start the inverters; however, it can stop them,
because its protections are also active in this operating mode.
Inverters can always be stopped.
When the operator presses the STOP button, the controller always tries to stop the inverters
without load. It then tries to transfer the power from the inverters to the generators (or to the
mains) before stopping them. If you want to stop the inverters immediately (without waiting for
the load transfer), just press the STOP button again.
If the START button is pressed while the controller is transferring the load to the generators or
to the mains, the previous stop command is simply cancelled.
Inverters can only be started if the following conditions are all verified:
•
There are no blocks.
•
The RNCB circuit breaker is closed (or does not exist). In fact, the inverters can only
produce power in parallel to another source, which does not happen if RNCB is
open
.