AN001 AC source assistance (Smart-Boost function)
Contents
1. 42 64 68 Press SET Your level is EXPERT i The code is available in the user manual RCC 02 03 2 Smart Boost allowed Press SET and search with f y Basic settings 1100 Press SET and search with Lockings 1123 b V Press SET and search with Smart Boost allowed 1126 Press SET selection Yes with and press SET The Smart Boost is allowed Page 3 4 3 Maximum source AC current power sharing Xtender settings SET P Press SET and search with A Basic settings 1100 Press SET and search with Max source AC current Power Sharing 1107 Press SET adjust the desired value i with and press SET Your input current is adjusted i The current value Aac must be set according to the size of the circuit breaker or the grid capacity 4 Prohibit to go over AC input current without opening the transfert relay Press SET and search with y Basic settings 1100 Press SET and search with Combi Inverter Charger 1197 Press SET and search with Allow to go over AC input current without opening the transfert relay 1436 Press SET selection No with gt and press SET The function is prohibited Kariger Notes Worldwi2. Kroen Application Note AC source assistance Smart Boost function General description Minimal configuration The function Smart Boost enables to add to e Range of inverters the source the inverter power like for instance a genset or the shorepower o All Xtender Series e RCC02 03 Features amp advantages o Software vers 1 3 8 and higher e Possibility to undersize an AC source o RCC User level EXPERT rear bop for example a generator e Possibility to add power to almost any other existing inverter by adding an Xtender e Limitation of the AC source consumption with an automatic reduction of peak loads and an automatic allocation of the power available Application Schematic Limited input current Xtender series Grid or Generator Consumers MART AC OUT BOOST e AC OUT Battery ies Figure 1 Smart Boost power flows JLONNI YAGNLS 80 E E L A L00 NV Page 1 4 Detailed description The Smart Boost function A permanent measure of the input current allows to control the power taken from the AC source If the loading current value exceeds the max current of the ac source value set with the parameter 1107 Max source AC current then the Smart Boost function will compensate the power required at the output Explanation with examples If the max current of the ac source is set at 10A but the load is 15A then 10A are taken from the grid and 5A are taken from the
3. battery ies Grid or Generator Xtender Consumers Battery ies Figure 1 Xtender using the Smart Boost function If the load is only 9A then the Smart Boost function wont be used The max current of the ac source is always set at 10A Then the 9A load will be powered by the grid and the 1A remaining will charge the battery ies Grid or Generator Xtende Consumers i 3 9 Aac Aa gt a EE Battery ies Figure 2 Xtender in charger mode Quick setting of the max current of the ac source Once a system is installed in a place there is normally no need to change Xtender settings anymore but users of mobile applications need to change very often the input currents value because they are moving all the time from one source to another Typical example of this is a boat sailing pier to pier and in each one it gets connected to Page 2 4 another shorepower with a different maximal current To ease the use of the Xtender for these customers there is on the RCC 02 03 a one button push access to the parameter 1107 from the default screen By pressing the SET button it directly goes to the max current of the ac source value and it is possible to increase or decrease it with the up or down button Fast access to the max input current value Parameter 1107 Figure 3 Fast access to set the max current of the ac source Allow to go over the max current of the ac source value In some situati
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5. ons it may happen that the battery ies are empty but the consumption could still be higher than the max current of the ac source value What are then the possibilities There is still one parameter that can be adjust in the installation Allow to go over input current without opening the transfer relay 1436 This parameter is set at YES by default which means if the power cannot be Smart Boosted then the grid current will go over the programmed max input limit value By setting it at NO then the transfer relay will open as soon as you go over the input limit For example if this parameter is set at NO when the battery ies are empty the Smart Boost will stop then over current is detected on the input and the transfer relay will open The user has a power supply break and he must take loads away The inverter restarts automatically and if load is under the input limit it will go back to the grid and recharge the battery ies In that case the input breaker is not tripped For such a system it could be a good option to use the auxiliary contact to disconnect unessential loads when battery ies are getting empty it becomes then a smarter system with a load management Kariger RCC 02 03 programming guide 1 User level to EXPERT Remote controller settings AL ESC SET b E Press SET and search with User level 5012 Press SET and insert the code
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