Sices HS 315, Техническое руководство

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132 Technical Handbook
It is possible to connect DC voltage only. The current is always measured as DC.
The con
nection point of the voltage must be “before” the LCB circuit breaker (if present).
The controller acquires the voltages and the current of the loads for:
•
Showing them on the display.
•
To protect the loads from high/low voltages on the common bar.
•
To protect the loads from high currents.
HS315 implements 4 different protections for the loads current:
•
One warning for high current (W242, parameters P.9751, P.9752, P.9753).
•
One latched warning for maximum current (short circuit) (K244, parameters P.9751,
P.9756, P.9757).
•
One latched warning for time dependent maximum current (K243, parameters P.9754,
P.9755).
•
One latched warning for current reverse (K245, parameters P.9751, P.9758, P.9759).
The latched warnings (K243, K244 and K245) force the opening of the LCB circuit breaker (if
present).
HS315 implements 4 different protections for the loads
’ voltages. If the LCB circuit breaker is
opened, they would not take sense, but they are used ad protections for the common bar: ACB
and GCB circuit breaker, however, must be both closed. In this case, the voltage protections
will work on the plant battery voltage (if BCB is closed) or on the generator voltage (if the
engine is running) or on the auxiliary source voltage.
•
One latched warning for minimum voltage (K261, parameters P.9741, P.9742,
P.9743).
•
One warning for low voltage (W262, parameters P.9741, P.9744, P.9745).
•
One warning for high voltage (W263, parameters P.9741, P.9746, P.9747).
•
One latched warning for maximum voltage (K264, parameters P.9741, P.9748,
P.9749).
The latched warnings (K261, K264) avoid the closure of the LCB circuit breaker (if opened).
Normally, instead, they do not force the opening of LCB. The maximum voltage protection (but
also the minimum voltage one if in AUTO) forces the opening of GCB (if the engine is running)
and of the ACB (if auxiliary source is present): LCB will be opened only in case of opening
failure of ACB/GCB.
The following functions, for the configuration of analogue outputs, are linked to generator
management. The outputs are managed based on a generator analogue value. Use the
"conversion curves" to adapt the single value to the output (0-100%):
•
AOF.3413
(“Voltage of the loads (DC)”).
•
AOF.3421
(“Power of the loads”).
•
AOF.3431
(“Current of the loads (DC)”).