Sices HS 315, Техническое руководство

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118 Technical Handbook
The connection of the auxiliary source to the controller is not mandatory. The controller
manages the auxiliary source only if at least one DC or AC voltage or its current are acquired.
It is possible to connect AC voltages (single-phase or three-phases) and/or DC voltage. If both
DC and AC voltages are connected, DC voltage has higher priority; when it cannot be used
(see in the following), the controller will use AC voltages.
The current is always measured as DC.
The connection point of the voltages (both AC
and DC) must be “before” the ACB circuit
breaker (if present).
The controller acquires the voltages and the current of the auxiliary source for:
•
Showing them on the display.
•
To protect the plant battery and the loads from high/low voltages on the auxiliary
source.
•
Eventually to calculate the current on the loads (if not directly measured).
•
To detect the condition where the loads are not supplied by the plant battery nor by
the auxiliary source. It is possible to configure HS315 to start the genset when the
loads are not supplied and LCB is closed (parameter P.9635). This is not the default
setting.
The auxiliary source must be connected to the JH connector. On a three-phase system, ensure
to connect the three phases (and optionally the neutral); on a single-phase system, ensure to
connect the L phase on connector 3 and the neutral on 4.
See paragraph 5.11 for the connections and for the configuration of the JH terminals.
There are various parameters that influence its management:
•
P.0105: nominal frequency. It is used for both generator and auxiliary source. All
thresholds associated to the frequency are expressed as a percentage of this
parameter.
•
P.0116: nominal voltage (AC) of the auxiliary source. Phase-to-phase nominal voltage
shall be set for three-phases systems; single-phase, for single phase systems.
Thresholds are expressed as a percentage of it. If set to zero, auxiliary source voltage
is considered still not present, even if physically connected (it is anyway measured
and displayed).
•
P.0117: primary value (in Volt) of the voltage transformers connected to connector JH.
•
P.0118: secondary value (in Volt) of the voltage transformers connected to connector
JH.
•
P.0201: hysteresis applied to all the thresholds related to auxiliary source voltage and
frequency. It is a percentage value related to P.0116 and to P.0105.
•
P.0203: auxiliary source low voltage threshold (percentage related to P.0116) (below
which the auxiliary source is considered anomalous).
•
P.0204: auxiliary source high voltage threshold (percentage related to P.0116) (above
which the auxiliary source is considered anomalous).
•
P.0236: auxiliary source low frequency threshold (percentage of P.0105); below this
value, auxiliary source is considered anomalous and the engine is started.
•
P.0237: auxiliary source high frequency threshold (percentage of P.0105); over this
value, auxiliary source is considered anomalous and the engine is started.
To assess the auxiliary source status, the controller can perform two different checks that can
be individually disabled. These checks are individually described (with examples) below: