Maxima 3KVA User Manual Download

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3KVA/5KVA

INVERTER / CHARGER

Version: 1.3

User Manual

Summary of Contents for 3KVA

Page 1: ...3KVA 5KVA INVERTER CHARGER Version 1 3 User Manual ...

Page 2: ...ection 7 PV Connection 9 Communication Connection 10 OPERATION 11 Power ON OFF 11 Operation and Display Panel 11 LCD Display Icons 12 LCD Setting 14 Display Setting 20 Operating Mode Description 21 Fault Reference Code 23 Warning Indicator 23 Battery Equalization Description Only available for 5KVA model 24 SPECIFICATIONS 26 TROUBLE SHOOTING 29 Appendix I Parallel function Only for 5K parallel mod...

Page 3: ...5 CAUTION Only qualified personnel can install this device with battery 6 NEVER charge a frozen battery 7 For optimum operation of this inverter charger please follow required spec to select appropriate cable size It s very important to correctly operate this inverter charger 8 Be very cautious when working with metal tools on or around batteries A potential risk exists to drop a tool to spark or ...

Page 4: ...t based on applications via LCD setting Configurable AC Solar Charger priority via LCD setting Compatible to mains voltage or generator power Auto restart while AC is recovering Overload Over temperature short circuit protection Smart battery charger design for optimized battery performance Cold start function Basic System Architecture The following illustration shows basic application for this in...

Page 5: ...w Wall mounted Desktop 5K 3K 1 Operation panel 2 Output sockets 3 AC output terminal 4 AC input 5 Communication port 6 PV input 7 Battery input 8 Circuit breaker 9 Parallel connectors only available for parallel models ...

Page 6: ...ation position is to be adhered to the wall vertically For proper air circulation to dissipate heat allow a clearance of approx 20 cm to the side and approx 50 cm above and below the unit SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON COMBUSTIBLE SURFACE ONLY Please follow the steps as below to finish the installation Employ the mounting plate as a template for marking the positions of the borehol...

Page 7: ...the metal case to the position where the LCD panel was previously removed and fix it with screws Place the LCD panel to the position where the metal case was previously removed and fix it with two screws Place the inverter in a protected area that is free of excessive dust and has adequate air flow Please place the inverter away from other units at least 20 cm to avoid interference ...

Page 8: ...ze Ring Terminal Torque value Cable mm2 Dimensions D mm L mm 3KVA 100A 100AH 200AH 1 4AWG 22 6 4 33 2 2 3 Nm 2 8AWG 14 6 4 29 2 5KVA 84A 200AH 1 4AWG 22 6 4 33 2 2 3 Nm 2 8AWG 14 6 4 29 2 Please follow below steps to implement battery connection 1 Assemble battery ring terminal based on recommended battery cable and terminal size 2 3KVA model supports 24VDC system and 5KVA model supports 48VDC sys...

Page 9: ... IN and OUT markings Please do NOT mis connect input and output connectors WARNING When using sockets as the output please make sure that the current of each socket is less than 10A in case of electric hazard WARNING All wiring must be performed by qualified person WARNING It s very important for system safety and efficient operation to use appropriate cable for AC input connection To reduce risk ...

Page 10: ...pliances such as air conditioner are required at least 2 3 minutes to restart because it s required to have enough time to balance refrigerant gas inside of circuits If a power shortage occurs and recovers in a short time it will cause damage to your connected appliances To prevent this kind of damage please check manufacturer of air conditioner if it s equipped with time delay function before ins...

Page 11: ...point voltage The PV charging efficiency is maximized while PV system voltage is close to Best Vmp Maximum PV module numbers in Series Vmpp of PV module X pcs Best Vmp of Inverter or Vmp range PV module numbers in Parallel Max charging current of inverter Impp Total PV module numbers maximum PV module numbers in series PV module numbers in parallel Take 5K W O MPPT model inverter as an example to ...

Page 12: ...r and PC This communication port is also can be replaced with SNMP card When installing with SNMP card in the inverter it will provide advanced communication and monitoring options After communication cable is connected well insert bundled CD into a computer and follow on screen instruction to install the monitoring software For the detailed software operation please check user manual of software ...

Page 13: ...tus and input output power information LED Indicators LED Indicator Messages Green Solid On Output is powered by utility in Line mode Flashing Output is powered by battery or PV in battery mode Green Solid On Battery is fully charged Flashing Battery is charging Red Solid On Fault occurs in the inverter Flashing Warning condition occurs in the inverter Function Keys Function Key Description ESC To...

Page 14: ...low In line mode it will present battery capacity as below table when unit is charging Status Battery voltage LCD Display Constant Current mode Constant Voltage mode 2V cell 4 bars will flash in turns 2 2 083V cell 25 bar will be on and the other three bars will flash in turns 2 083 2 167V cell Two bars will be on and the other two bars will flash in turns 2 167 V cell Three bars will be on and th...

Page 15: ...ates unit is overload Indicates the load level by 0 24 25 50 50 74 and 75 100 0 25 25 50 50 75 75 100 Mode Operation Information Indicates the load is supplied by utility power Indicates the load is supplied by battery or solar Indicates alarm or fault is happened Indicates the solar charger circuit is working Indicates the utility charger circuit is working ...

Page 16: ... available Battery voltage drops to either low level warning voltage or the setting point in program 12 Utility first default Utility will provide power to the loads as first priority Solar and battery energy will provide power to the loads only when utility power is not available SBU priority Solar energy provides power to the loads as first priority If solar energy is not sufficient to power all...

Page 17: ... the transfer time is within 10ms between battery mode and line mode 04 Power saving mode enable disable Saving mode disable default If disabled no matter connected load is low or high the on off status of inverter output will not be effected Saving mode enable If enabled the output of inverter will be off when connected load is pretty low or not detected 05 Battery type AGM default Flooded User D...

Page 18: ...ce when selecting SBU priority or Solar first in program 01 Available options in 24V models 22 0V 22 5V 23 0V default 23 5V 24 0V 24 5V 25 0V 25 5V Available options in 48V models 44V 45V 46V default 47V 48V 49V 50V 51V 13 Setting voltage point back to battery mode when selecting SBU priority or Solar first in program 01 Available options in 24V models Battery fully charged 24V 24 5V 25V 25 5V 26V...

Page 19: ...y Solar energy and utility will charge battery at the same time Only Solar Solar energy will be the only charger source no matter utility is available or not If this inverter charger is working in Battery mode or Power saving mode only solar energy can charge battery Solar energy will charge battery if it s available and sufficient 18 Alarm control Alarm on default Alarm off 19 Auto return to defa...

Page 20: ...s program can be set up Setting range is from 20 0V to 24 0V for 24V model 40 0V to 48 0V for 48V model Increment of each click is 0 1V Low DC cut off voltage will be fixed to setting value no matter what percentage of load is connected 31 Solar power balance When enabled solar input power will be automatically adjusted according to connected load power Only available for 5KVA model Solar power ba...

Page 21: ... Setting range is from 5min to 900min Increment of each click is 5min 36 Battery equalized timeout Only available for 5KVA model 120min default Setting range is from 5min to 900 min Increment of each click is 5 min 37 Equalization interval Only available for 5KVA model 30days default Setting range is from 0 to 90 days Increment of each click is 1 day 39 Equalization activated immediately Only avai...

Page 22: ...PV voltage total charging power solar charging power battery voltage output frequency main CPU Version and second CPU Version Selectable information LCD display Input voltage Output voltage Default Display Screen Input Voltage 230V output voltage 230V Input frequency Input frequency 50Hz PV voltage PV voltage 60V Total charging power Total charging power 1600W Solar charging power Solar charging p...

Page 23: ...ation mode Description LCD display Standby mode Power saving mode Note Standby mode The inverter is not turned on yet but at this time the inverter can charge battery without AC output Power saving mode If enabled the output of inverter will be off when connected load is pretty low or not detected No output is supplied by the unit but it still can charge batteries Charging by utility Charging by P...

Page 24: ... charge batteries Charging by utility Only available in 3K model Charging by PV energy No charging Line Mode The unit will provide output power from the mains It will also charge the battery at line mode Charging by PV energy Charging by utility Battery Mode The unit will provide output power from battery and PV power Power from battery and PV energy Power from battery only ...

Page 25: ...ailed 51 Over current or surge 52 Bus voltage is too low 53 Inverter soft start failed 55 Over DC voltage in AC output 56 Battery connection is open 57 Current sensor failed 58 Output voltage is too low NOTE Fault codes 51 52 53 55 56 57 and 58 are only available in 5K model Warning Indicator Warning Event Audible Alarm Icon flashing Fan is locked when inverter is on Beep three times every second ...

Page 26: ...function in monitoring LCD setting program 33 first Then you may apply this function in device by either one of following methods 1 Setting equalization interval in program 37 2 Active equalization immediately in program 39 When to Equalize In float stage when the setting equalization interval battery equalization cycle is arrived or equalization is active immediately the controller will start to ...

Page 27: ...on voltage point the charge controller will extend the battery equalized time until battery voltage achieves battery equalization voltage If battery voltage is still lower than battery equalization voltage when battery equalized timeout setting is over the charge controller will stop equalization and return to float stage ...

Page 28: ...AC Input Voltage 300Vac Nominal Input Frequency 50Hz 60Hz Auto detection Low Loss Frequency 40 1Hz Low Loss Return Frequency 42 1Hz High Loss Frequency 65 1Hz High Loss Return Frequency 63 1Hz Output Short Circuit Protection Line mode Circuit Breaker Battery mode Electronic Circuits Efficiency Line Mode 95 Rated R load battery full charged Transfer Time 10ms typical For UPS 20ms typical For Applia...

Page 29: ...s Nominal DC Input Voltage 24Vdc 48Vdc Cold Start Voltage 23 0Vdc 46 0Vdc Low DC Warning Voltage load 20 22 0Vdc 44 0Vdc 20 load 50 21 4Vdc 42 8Vdc load 50 20 2Vdc 40 4Vdc Low DC Warning Return Voltage load 20 23 0Vdc 46 0Vdc 20 load 50 22 4Vdc 44 8Vdc load 50 21 2Vdc 42 4Vdc Low DC Cut off Voltage load 20 21 0Vdc 42 0Vdc 20 load 50 20 4Vdc 40 8Vdc load 50 19 2Vdc 38 4Vdc High DC Recovery Voltage ...

Page 30: ...PT 5KVA W O MPPT 5KVA With MPPT Efficiency 98 0 max Max PV Array Open Circuit Voltage 75VDC 100VDC 105VDC 145VDC PV Array MPPT Voltage Range 30 32VDC 30 80VDC 60 72VDC 60 115VDC Min battery voltage for PV charge 17VDC 34VDC Charging current 50A 40A 50A 80A Standby Power Consumption 2W Battery Voltage Accuracy 0 3 PV Voltage Accuracy 2V Charging Algorithm 3 Step Joint Utility and Solar Charging Max...

Page 31: ...and LEDs are flashing Battery is disconnected Check if battery wires are connected well Buzzer beeps continuously and red LED is on Fault code 07 Overload error The inverter is overload 110 and time is up Reduce the connected load by switching off some equipment Fault code 05 Output short circuited Check if wiring is connected well and remove abnormal load Temperature of internal converter compone...

Page 32: ... 20KVA NOTE If this unit is bundled with share current cable and parallel cable this inverter is default supported parallel operation You may skip section 2 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 Paralle...

Page 33: ...Recommended battery cable and terminal size for each inverter Model Wire Size Ring Terminal Torque value Cable mm2 Dimensions D mm L mm 5KVA 1 4AWG 22 6 4 33 2 2 3 Nm 2 8AWG 14 6 4 29 2 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 Recommended AC input and output cable siz...

Page 34: ... whole system the rating of the breaker should be X times current of 1 unit X indicates the number of inverters connected in parallel Recommended AC input breaker specification for single phase application Inverter Model 2 units 3 units 4 units 5 units 6 units 5KVA 100A 230VAC 150A 230VAC 200A 230VAC 250A 230VAC 300A 230VAC Note 1 It s accepted to use 50A breaker for each unit in parallel system a...

Page 35: ... 5 1 Parallel Operation in Single phase Two inverters in parallel Power Connection N L N L Load Communication Connection Three inverters in parallel Power Connection N L N L Load Communication Connection ...

Page 36: ...34 Four inverters in parallel Power Connection N L N L Load Communication Connection Five inverters in parallel Power Connection N L N L Load Communication Connection ...

Page 37: ...verters in parallel Power Connection N L N L Load Communication Connection 5 2 Support 3 phase equipment Two inverters in each phase Power Connection N L1 L2 L3 N L1 L2 L3 Load P1 P2 P3 Communication Connection ...

Page 38: ...oad P1 P2 P3 Note It s up to customer s demand to pick 4 inverters on any phase P1 L1 phase P2 L2 phase P3 L3 phase Communication Connection Three inverters in one phase two inverters in second phase and one inverter for the third phase Power Connection N L1 L2 L3 N L1 L2 L3 Load P1 P2 P3 Communication Connection ...

Page 39: ...or the remaining two phases Power Connection N L1 L2 L3 N L1 L2 L3 Load P1 P2 P3 Communication Connection Two inverters in two phases and only one inverter for the remaining phase Power Connection N L1 L2 L3 N L1 L2 L3 Load P1 P2 P3 Communication Connection ...

Page 40: ... and only one inverter for the remaining phases Power Connection N L1 L2 L3 N L1 L2 L3 Load P1 P2 P3 Communication Connection One inverter in each phase Power Connection N L1 L2 L3 N L1 L2 L3 Load P1 P2 P3 Communication Connection ...

Page 41: ...haring cable between the inverters which are in different phases Otherwise it may damage the inverters 6 PV Connection Please refer to user manual of single unit for PV Connection CAUTION Each inverter should connect to PV modules separately ...

Page 42: ...e 30 PV judge condition Only apply for setting Solar first in program 1 Output source priority One Inverter Default 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 according to rule of solar first setting For example two units are connected in parallel and set SOL in output source priority If ...

Page 43: ...setting program 28 of each unit And then shut down all units NOET It s necessary to turn off switch when setting LCD program Otherwise the setting cannot be programmed Step 3 Turn on each unit LCD display in Master unit LCD display in Slave unit 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 u...

Page 44: ...Line wires in AC input If AC connection is detected and three phases are matched with unit setting they will work normally If the sequences are not matched it won t work in Line mode You must exchange the wires of P2 P3 or exchange the setting of P2 P3 LCD display in L1 phase unit LCD display in L2 phase unit LCD display in L3 phase unit Step 5 If there is no more fault alarm the system to support...

Page 45: ...ta loss 83 The battery voltage of each inverter is not the same 1 Make sure all inverters share same groups of batteries together 2 Remove all loads and disconnect AC input and PV input Then check battery voltage of all inverters If the values from all inverters are close please check if all battery cables are the same length and same material type Otherwise please contact your installer to provid...

Page 46: ...48 108 2400 35 94 2700 31 74 3000 28 67 Model Load VA Backup Time 48Vdc 100Ah min Backup Time 48Vdc 200Ah min 5KVA 500 613 1288 1000 268 613 1500 158 402 2000 111 271 2500 90 215 3000 76 182 3500 65 141 4000 50 112 4500 44 100 5000 40 90 Note Backup time depends on the quality of the battery age of battery and type of battery Specifications of batteries may vary depending on different manufacturer...

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