Chapter 8. The first run
8.2. 16 point load characteristic of a synchronous generator
PS100-WT and PS100-H inverters with WT input (AC voltage input) inverters set the load based on the
16-point load characteristic:
I = f(
w)
where:
w
– generator frequency,
I – current limit [%] in relation to nominal current set in par. 3.30.
Points (w,I) are set by user using the “control panel” in the group 3. A superior current limit is imposed on the
characteristic curve (par. 3.9 „DC curr limit 2”), the maximum value of which results from the technical
capabilities of the device. However, you can set the lower values by trimming the characteristics as in the
figure below.
Fig. 8.3. 16-point characteristic I = f(w) with superior current limit
8.3. Start/Stop command
The START / STOP command is executed automatically when the DC input voltage will exceed voltage
thresholds responsible for it:
a) Par. 1.20 (group 1, parameter 20) "Autostart Volt" – rectified voltage from the RES input side
(renewable energy source side: synchronous generators or PV panels) above which the inverter will
start operation (if it was in the STOP state) and begin to transfer energy to the electrical grid.
b) Par. 1.21 (group 1, parameter 21) "Autostop Volt” – rectified voltage from the RES input side
below which the inverter ceases to transfer energy to the mains and goes into sleep mode. If the
input voltage remains below this level for the time specified in par. 1.11 this inverter will go into a
deep sleep state.
Sleep state: the mains voltage maintains the voltage in the batteries of the intermediate circuit
capacitors, the inverter is ready to start working in a few seconds.
Deep sleep state: the inverter's intermediary circuit is disconnected from the mains, it may take
about 1 ÷ 2 min to start working. In this mode, energy consumption is less than in sleep mode.
38 PS100 – User manual
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