User Manual
Contents
1. VOLTACON POWER CONVERSION PARALLEL OPERATION AUTONOMOUS SOLAR INVERTER IKVA 5KVA INVERTER CHARGER 5 Years Manufacturer s Warranty Version 1 2 VOLTACON UK LIMITED 5 ARGOSY COURT WHITLEY BUSINESS PARK CV3 4GA COVENTRY UNITED KINGDOM 4KVA 5KVA Parallel Installation Guide 1 Introduction This inverter can be used in parallel with two different operation modes 1 Parallel operation in single phase with up to 4 units The supported maximum output power is 16KW 20KVA 2 Three units work together to support three phase equipment one inverter per phase The supported maximum output power is 12KW 15KVA NOTE If this unit is bundled with share current cable and parallel cable this inverter is default supported parallel operation You may skip section 3 If not please purchase parallel kit and install this unit by following instruction from professional technical personnel in local dealer 2 Package Contents In parallel kit you will find the following items in the package Parallel board Parallel communication cable Current sharing cable 3 Parallel board installation This installation steps are only applied to 4K 5K models Step 1 Remove wire cover by unscrewing all screws 1 info voltacon com www voltacon com Step 3 Remove two screws as below chart and remove 2 pin and 14 pin cables Take out the board under the communication board MANET SOTO ay Bao es2. mode Switch off When ONE is selected as long as one of inverters has been connected to PV modules and PV input is normal parallel or 3 phase system will continue working One Inverter according to rule of solar first setting Default For example two units are connected in jn Pm parallel and set SOL in output source A priority If one of two units has connected to PV modules and PV input is normal the parallel system will provide power to loads from solar or battery power If both of them are not sufficient the system will provide power to loads from utility When ALL is selected parallel or 3 phase system will continue working according to rule of solar first setting only when all of inverters are connected to PV modules All of Inverters For example two units are connected in aM i parallel and set SOL in output source JU ALL priority When selecting ALL in program 30 it s necessary to have all inverters connected to PV modules and PV input is normal to allow the system to provide power to loads from solar and battery power Otherwise the system will provide power to loads from utility PV judge condition Only apply for setting Solar first program 1 Output source priority 30 9 info voltacon com www voltacon com Fault code display Fault Code Power feedback protection Firmware version inconsistent Current sharing fault GE J LN Syn
3. LT L eos 1 UA 9 2000000000009 5600060000 s Ju 9 0 e L4 0 0 0 0 0 0 0 O6060605050750 y M ee 0 0 0 0 0 0 0 0 020909000209 02 020 4000500000000000000 2090909090696 0969696909690969090 007075 000000000000000000 00000 000090005000600000 0000000 2 7708 EE LE S zi LI z gt mE Step 6 Re connect 2 pin and 14 pin to original position Parallel board Communication board info voltacon com WWW Voltacon com Step 7 Put communication board back to the unit Step 8 Put wire cover back to the unit Now the inverter is providing parallel operation function 4 Mounting the Unit When installing multiple units please follow below chart 500mm NOTE For proper air circulation to dissipate heat allow a clearance of approx 50 cm to the side and approx 50 cm above and below the unit Be sure to install each unit in the same level 5 Battery Connection WARNING Be sure that all inverters will share the same sets of batteries Otherwise the inverters will transfer to fault mode WARNING Be sure the length of all battery cables is the same Otherwise there will be voltage difference between inverter and battery to cause parallel inverters not working Follow below chart to connect batteries All battery cables are connected from inverters to batteries via the s
4. are open and each Neutral wires of each unit are connected together Step 2 Switch on DC breakers of three units Step 3 Turn on three units Step 4 Switch on all AC breakers of Line wires in AC input If AC connection is detected and three phases are matched with unit setting they will work normally Otherwise the AC icon will flash and they will not work in line mode 11 info voltacon com www voltacon com Step 5 If there is no more fault alarm the system to support 3 phase equipment is completely installed Step 6 Please switch on all breakers of Line wires in load side This system will start to provide power to the load Note 1 To avoid overload occurring before turning on breakers in load side it s better to have whole system in operation first Note 2 Transfer time for this operation exists Power interruption may happen to critical devices which cannot bear transfer time 12 Trouble shooting Mu Fault Event Fault Event Description Code Current feedback into the inverter is Restart the inverter If the problem remains please contact your detected installer 1 Update all inverter firmware to the same The firmware version of each inverter version is not the same 2 If the problem remains please contact your installer 1 Check if sharing cables are connected well and The output current of each inverter is restart the inverter different 2 If the pro
5. the BUS bar directly and you can add a breaker between the utility and the bus bar in the distributor WARNING Be sure the length of all AC input cables is the same to guarantee reliability of sharing current in each unit WARNING Recommended spec of cable from inverter to BUS bar and breaker is listed as below The cable used from BUS bar to AC power should be X pcs of cable from inverter to BUS bar and breaker X indicates the number of inverters connected in parallel Suggested cable wire and breaker requirement for AC input connection 7 AC Output Load Connection Parallel in single phase Connect Line wires of AC output from each unit to Line BUS bar Connect Neutral wires of AC output from each unit to Neutral BUS bar Refer to below figure for connection of AC output Support three phase equipment Connect Line wires of AC output from each unit to the load Connect Neutral wires of AC output from each unit to Neutral BUS bar Refer to below figure for connection of AC output 6 info voltacon com www voltacon com BUS L1L2L3N WARNING Only Line wires can be connected breaker It s not allowed to add breaker into Neutral wires All Neutral wires are connected to the BUS bar directly WARNING Be sure the length of all AC output cables is the same to guarantee reliability of sharing current in each unit WARNING Recommended spec of cable from inverter to BU
6. S bar and breaker is listed as below The cable used from BUS bar to AC output should be X pcs of cable from inverter to BUS bar and breaker X indicates the number of inverters connected in parallel Suggested cable and breaker requirement for AC output connection Amperage for breaker Torque 40A 10 AWG 1 4 1 6Nm 50A 8 AWG 1 4 1 6Nm 8 PV Connection Please refer to user manual of single unit for PV Connection CAUTION Each inverter should connect to PV modules separately 7 info voltacon com www voltacon com 9 Parallel Cable Connection Parallel cable includes parallel communication cable and current sharing cable Please follow below chart to connect to the inverter 9 1 Parallel Operation in Single phase Two inverters in parallel 9 2 Support 3 phase equipment Follow below chart to connect inverters to support 3 phase equipment info voltacon com WWW Voltacon com 10 LCD Setting and Display Setting Program When the units are used in parallel with single phase please select PAL in program 28 Operation to support three phase equipment is required to have three inverters This setting for each unit should be different in L1 phase L2 phase and L3 phase separately Please set up this setting corresponding to each phase connection Besides power saving function will be automatically disabled AC output mode This setting is only 28 available when the inverter is in standby
7. ame BUS bar 3 info voltacon com www voltacon com Breakertsis Battery Recommended battery capacity Battery Capacity 400AH 600AH 800AH Ring terminal NOTE Recommended spec of cable from inverter to BUS bar and breaker is listed as below The cable used from BUS bar to battery should be X pcs of cable from inverter to BUS bar and breaker X indicates the number of inverters connected in parallel Recommended battery cable and terminal size Typical Battery Ge 19 Dimensions amu Torque Amperage capacity value ia info voltacon com WWW Voltacon com 6 AC Input Connection Parallel in single phase Connect Line wires of AC input from each unit to Line BUS bar Connect Neutral wires of AC input from each unit to Neutral BUS bar Refer to below figure for connection of AC input UJ UTILITY Support three phase equipment Connect Line wires of the inverter to each phase of the utility Connect Neutral wires of AC input from each unit to Neutral BUS bar Refer to below figure for connection of AC input Breaker pen 5666 NEUTRAL BUS bar INE DERN NEUTRAL UTILITY 5 info voltacon com WWW Voltacon com WARNING Only Line wires can be connected breaker It s not allowed to add breaker into Neutral wires between inverter and the BUS bar All Neutral wires are connected to
8. blem remains please contact your installer CAN data loss 1 Check if communication cables are connected Host data loss well and restart the inverter 2 If the problem remains please contact your Synchronization data loss installer _ 1 Make sure all inverters share same groups of 93 The battery voltage of each inverter is batteries together not the same 2 If the problem remains please contact your installer 1 Checkthe utility wiring conncetion and restart AC input voltage and frequency are the inverter detected different 2 If the problem remains please contact your installer 1 Restart the inverter AC output current unbalance 2 If the problem remains please contact your installer 1 Switch off the inverter and check LCD setting 28 2 If the problem remains please contact your installer AC output mode setting is different 12 info voltacon com WWW Voltacon com VOLTACON POWER CONVERSION Disposal The packaging and e ancillary packing consist entirely of en vironmentally friendly materials They can be disposed of at your local recycling facility wheelie bin with the line through it means F The symbol of the that in the European Union the product has to be disposed of in a separate refuse collection This applies to the product and to all components bearing this symbol Products marked in this way may not be disposed of along with normal domestic waste
9. but have to be handed in at a recycling collection point for electrical and electronic appliances Recycling helps to reduce the consumption of raw materials and to ease the burden on the environment VOLTACON UK Limited Power Conversion amp Lighting 5 Argosy Court Whitley Business Park Coventry CV3 4GA Coventry T 44 2476559005 www voltacon com www ledison led lights co uk info voltacon com www voltacon com
10. chronization loss xa Ip 83 Battery voltage detected different LN AC input voltage and frequency detected different 84 ra AC output current unbalance B5 Jem rg AC output mode setting is different Bb v 11 Commissioning Parallel in single phase Step 1 Check the following requirements before commissioning Correct wire connection Ensure all breakers in Line wires of load side are open and each Neutral wires of each unit are connected together Step 2 Switch on DC breakers of each unit Step 3 Turn on each unit LCD display in Master unit LCD display in Slave unit 10 info voltacon com www voltacon com NOTE Master and slave units are randomly defined Step 4 Switch on all AC breakers of Line wires in AC input It s better to have all inverters connect to utility at the same time If not it will display fault 82 in following order inverters However these inverters will automatically restart If detecting AC connection they will work normally LCD display in Master unit LCD display in Slave unit Step 5 If there is no more fault alarm the parallel system is completely installed Step 6 Please switch on all breakers of Line wires in load side This system will start to provide power to the load Support three phase equipment Step 1 Check the following requirements before commissioning Correct wire connection Ensure all breakers in Line wires of load side
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