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Summary of Contents for Epever HP-AHP20SA Series
- Page 1 Inverter/charger Parallel Operation Guide...
- Page 2 Contents 1 Applicable models..................1 2 Preparation....................3 2.1 Wire and breaker size for parallel operation................ 3 2.2 Precautions for parallel installation..................4 3 Parallel Operation in Single phase............7 3.1 Single phase parallel wiring diagram..................7 3.1.1 Connect the battery, utility, load, and parallel communication cables......7 3.1.2 Connect PV.........................
- Page 3 1 Applicable models The product models listed in the table below all support the parallel operation for multiple units in single phase or three phase. After correctly connecting the inverter/charges according to the wiring diagram of single phase parallel or three phase parallel, the phase can be arbitrarily switched to single phase or three phase(Phase A, B &...
- Page 4 Parallel Communication Ports & Accessories Product Product Models Parallel Com. CAN bus terminal Series Parallel Com. Ports Cables resistor HP3522-AH1250P65A HP-AHP65A HP3542-AH0650P65A USB-A 3.0 port CAN communication HP5542-AH1050P65A USB-A 3.0 (M) termination resistor parallel communication cable Note: The actual product model on sell shall prevail.
- Page 5 2 Preparation 2.1 Wire and breaker size for parallel operation Recommended battery wire and breaker size when connecting a single inverter/charger. Product model Battery wire size Circuit breaker HP3542-AH0650P30A 20mm /4AWG 2P—125A HP-AHP30A HP5542-AH1050P30A 35 mm /2AWG 2P—200A HP3522-AH1250P30A HP3542-AH0650P65A 20mm /4AWG...
- Page 6 If the "BATT Input Mode" is selected as "Shared" (for the specific selection, please refer to chapter 3.2 Debug for single phase parallel or 4.2 Debug for three phase parallel), you need to connect all the battery cables of parallel inverter/chargers together.
- Page 7 During wiring, disconnect the circuit breaker, and confirm that the "+" and "-" pole leads of each part are connected correctly. If the "BATT Input Mode" is selected as "Shared," all the inverter/chargers connected in parallel are connected to the same battery pack. Ensure that the cable length of each inverter/charger to the battery pack is the same.
- Page 8 Wiring Before wiring, please remove the wire cover by unscrewing the three screws. Note: The above figure illustration is based on the HP-AHP20SA series. For other product models, please refer to the actual product you received. At the inverter/charger’s utility and load terminal plate, from left to right, are GRID_L, GRID_N, LOAD_N, LOAD_L.
- Page 9 3 Parallel Operation in Single phase 3.1 Single phase parallel wiring diagram 3.1.1 Connect the battery, utility, load, and parallel communication cables Two inverter/chargers in single phase parallel Connect the battery, utility and load Note: The figure above shows the connection method for the "BATT Input Mode > Shared" mode. The "BATT Input Mode >...
- Page 10 Three or more inverter/chargers in single phase parallel Connect the battery, utility and load Note: The figure above shows the connection method for the "BATT Input Mode > Shared" mode. The "BATT Input Mode > Independent" mode requires each inverter/charger to connect a battery pack separately.
- Page 11 Each inverter charger should be connected to PV modules separately, and it is prohibited to connect the same PV modules to two or more inverter chargers. WARNING In parallel installation, if the Utility and PV supply power together, a certain deviation (inequality) in the output power exists for each inverter/charger.
- Page 12 Operation for "BATT Input Mode": Operation for "Phase Set": Parallel status icon. It shows when there is two or more inverter/chargers connect in parallel successfully, and it will not display on the single inverter/charger.
- Page 13 Note: The master and slave units are randomly defined. After"BATT Input Mode" and “Phase Set” is modified, restart the inverter/charger for the setting to take effect. Follow the above flowchart to re-enter the “Basic Param Setup” and “Load Data Setup” page and check if the "BATT Input Mode" and “Phase CAUTION Set”...
- Page 14 please check if the phase setting is successful. Step 4: Connect all AC breakers on the utility input, and the utility input of all inverter/chargers must be connected to the same utility. All inverter/chargers will automatically switch to utility bypass charging mode after being connected to the utility for 30 seconds (expect for “Solar”...
- Page 15 4 Parallel Operation in Three Phase 4.1 Three phase parallel wiring diagram When paralleling in three phase(Phase A, Phase B and Phase C), the number of parallel units in each phase is arbitrarily specified by the user. The user can increase the number of parallel units in Phase A, Phase B, or Phase C according to actual needs to expand the capacity of a certain phase.
- Page 16 Connect the CAN bus terminal resistor (included accessory) to the parallel communication ports of the first and last inverter/charger. One for Phase A, one for Phase B, and one for Phase C Connect the battery, utility and load Note: The figure above shows the connection method for the "BATT Input Mode > Shared" mode. The "BATT Input Mode >...
- Page 17 Two for Phase A, one for Phase B, and one for Phase C Connect the battery, utility and load Note: The figure above shows the connection method for the "BATT Input Mode > Shared" mode. The "BATT Input Mode > Independent" mode requires each inverter/charger to connect a battery pack separately.
- Page 18 Two for Phase A, two for Phase B, and one for Phase C Connect the battery, utility and load Note: The figure above shows the connection method for the "BATT Input Mode > Shared" mode. The "BATT Input Mode > Independent" mode requires each inverter/charger to connect a battery pack separately.
- Page 19 Three for Phase A, one for Phase B, and one for Phase C Connect the battery, utility and load Note: The figure above shows the connection method for the "BATT Input Mode > Shared" mode. The "BATT Input Mode > Independent" mode requires each inverter/charger to connect a battery pack separately.
- Page 20 Three for Phase A, two for Phase B, and one for Phase C Connect the battery, utility and load Note: The figure above shows the connection method for the "BATT Input Mode > Shared" mode. The "BATT Input Mode > Independent" mode requires each inverter/charger to connect a battery pack separately.
- Page 21 Four for Phase A, one for Phase B, and one for Phase C Connect the battery, utility and load Note: The figure above shows the connection method for the "BATT Input Mode > Shared" mode. The "BATT Input Mode > Independent" mode requires each inverter/charger to connect a battery pack separately.
- Page 22 In parallel installation, if the Utility and PV supply power together, a certain deviation (inequality) in the output power exists for each inverter/charger. The larger the difference between each inverter/charger’s Utility charging current, the greater the CAUTION deviation in output power. This is the internal loop of the inverter/charger, which will not affect the normal operation of the Utility bypass.
- Page 23 Operation for "BATT Input Mode": Operation for "Phase Set": Parallel parameters setting for Phase A After three phase wiring is completed, the “Phase Set” of each inverter/charger in Phase A needs to be changed to “Phase A”. See the example of screen display on the slave unit for two inverter/chargers in Phase A below.
- Page 24 Parallel parameters setting for Phase B After three phase wiring is completed, the “Phase Set” of each inverter/charger in Phase B needs to be changed to “Phase B”. See the example of screen display on the slave unit for two inverter/chargers in Phase B below.
- Page 25 Setup” and “Load Data Setup” page and check if the "BATT Input Mode" and “Phase Set” is correct. Or after powering on at least 2 parallel units, observe whether the phase setting on the screen of the set equipment is successful. Only after the phase settings of all parallel equipment are successful can the output circuit breaker can be connected.
- Page 26 displayed. After the inverter/chargers are turned on, the load circuit breaker can only be connected after ensuring the phases are set correctly through the home screen or WARNING parameters “Phase Set”. When the inverter/chargers are installed in three phase, and connect the utility input to Phase A, B and C, make sure the phase connection is the same as the setting in “Phase Set”.
- Page 27 When connecting the utility for bypass charging, if only the utility breaker of a certain inverter/charger is disconnect, be careful that the utility input terminals of this WARNING inverter/charger still have power. Step 5: If there is no fault alarm, indicates the three phase parallel system is completely installed. Step 6: Please connect all circuit breakers on the load side, and the parallel system will start to provide power to the load.
- Page 28 5 BMS Connection 5.1 BMS wiring diagram for parallel Set the "BATT Input Mode" as "Shared" In either single phase application or three phase application, if the "BATT Input Mode" is selected as “Shared,” the lithium battery can be connected to any inverter/charger through BMS communication cable(RJ45 cable).
- Page 29 Set parameters of “Charge Control Mode, BMS Valid/Invalid, BMS voltage control enable, BMS current control select” Connect the battery and the inverter/charger successfully. If the "BATT Input Mode" is selected as “Shared,” carry out BMS parameters setting on the LCD of the inverter/charger that connected with the battery.
- Page 30 Step 1: Based on the manufacturer information of the lithium battery connected to the inverter/charger, determine the lithium battery conversion communication protocol number PRO (Go to EPEVER website and download the “BMS Communication Protocols & Fixed ID” file to obtain the...
- Page 31 Step 2: According to the above operation flowchart 1 ~ 9, enter the “Sys Param Setup” page and set the “BMS Protocol” to the value consist with the PRO number. Step 3: After setting the BMS parameters, return to the home screen, where the word “BMS” is displayed in the upper right corner, indicating the BMS connection is successful.
- Page 32 battery packs are connected in parallel, it shows 44273. Enter the “BMS DATA” screen, click the "UP/DOWN" button to view the parameter. No matter a single battery pack is used or multiple battery packs in parallel are used, BMSCharginCurrent the “Charge current Limit” of each parallel BMSDisChageCurrt unit= “BMSCharginCurrent”...
- Page 33 MaxCharginCurrent, LimitDisChgCurrt (set through the "Battery Data Setup" screen), and the MaxCharge Current (set through the "Utility Data Setup" screen) according to the above "Control Logic for battery pack." If the parameters read from the BMS do not include the BMSCharginCurrent and ...
- Page 34 When the following parameters are set on any interface inverter/charger, will automatically synchronized to all the other inverter/chargers. OutputFrequency (Note: After setting this Load Data OutputVoltLevel parameter, it will only take Setup effect after restarting all the equipment.) OverVoltDisconect OverFreqDisconnect Utility Data OverVoltReconnect UnderFreqDisconct...
- Page 35 Set the "BATT Input Mode" as "Independent" If the "BATT Input Mode" is selected as "Independent," the parameters (listed in the following table) of all slave inverter/chargers will be automatically synchronized to the host units after normal communication. The following parameters will be automatically updated after normal operation on the LCD of any inverter/charger.
- Page 36 6 Parallel Troubleshooting After the inverter/charger is powered on, the meter displays the boot screen all the time (unable to enter the home screen) and the red "RUN" indicator flashes. It means the communication with the inverter/charger is error. When the above fault occurs, check whether the CAUTION communication cable is disconnected.
- Page 37 Error ② Fault/Status Indicator Buzzer Solution ① code After setting the “UnbalanceSet” to “ENABLE” in three phase parallel system, the difference in output current between any two phases exceeds the set Current unbalance in value of “UnbalanceValue.” It is necessary to ensure that the difference in Err83 three phase output current between any two phases does not exceed the set value of...
- Page 38 Error ② Fault/Status Indicator Buzzer Solution ① code Inconsistent product Check if there are equipment with inconsistent product models in the system, Err93 models and ensure the consistency of all equipment in the system. Number of parallel Check if the number of parallel units in single phase or three phase system Err94 Intermitte exceeds the limit...
- Page 39 SolarV GmbH Tel: +4961969076877 E-mail: info@solarv.de Website: www.solarv.de...
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