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Qoltec 53870 User Manual

Off-grid hybrid solar inverter 100a 3.5kva, 5.5kva
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  • Page 2 USER MANUAL Off-Grid Hybrid Solar Inverter 100A 3.5kVA, 5.5kVA...

  • Page 3: Table Of Contents

    Table of Contents Introduction Information about this manual About the product Installation Preparation Installation of the Unit III. Connecting the Battery Connection of AC inputs/outputs PV connection Final assembly Operation Switching on/off Operating and Display Panel III. LCD settings Balancing the Battery Settings for Lithium Batteries Error codes Warning indicator...

  • Page 4: Information About This Manual

    INTRODUCTION Thank you for your trust and for choosing our solar inverter. We are confident that the product will meet your expectations. This manual will help you to familiarise yourself with the device and facilitate the configuration process, as well as help you with any problems that may arise during the operation of the device.

  • Page 5: Installation

    PV input Battery input RS232 communication port RS485 communication port Cable outlet Grounding INSTALLATION Preparation Inspect the unit before installation. Make sure that nothing inside the packaging is damaged. You should receive the following items inside the packaging: Solar inverter, User manual Before connecting all the cables, remove the lower cover by unscrewing the two screws as shown below.

  • Page 6: Connecting The Battery

    NOTE : SUITABLE FOR INSTALLATION ONLY ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE. Mount the unit by tightening the three screws. It is recommended to use M4 or M5 screws. Figure 4 III. Connecting the Battery NOTE: The installation of a separate DC current protection or disconnecting device between the battery and the inverter is required for safe operation and regulatory compliance.

  • Page 7: Connection Of Ac Inputs/Outputs

    Remove 18 mm of insulation for positive and negative wires, according to the recommended stripping length. Connect all battery packs as required by the unit. It is recommended to use the recommended battery capacity. Slide the battery cable flat into the inverter battery connector and ensure that the screws are tightened to a torque of 2-3 Nm.
  • Page 8 WARNING: It is very important for system safety and efficient operation to use the correct cable to connect the AC input. To reduce the risk of injury, use the recommended cable size as below. Recommended cable requirements for AC cables: Model Cross-section Torque value...

  • Page 9: Pv Connection

    (brown) L→LINE (blue). N→NEUTRAL Ensure that the cables are connected correctly. NOTE: Appliances such as the air conditioner require at least 2~3 minutes to restart, as this is required to have enough time to balance the refrigerant gas inside the circuits. If there is a power shortage and it is restored within a short time, this will damage the connected appliances.
  • Page 10 When choosing the right photovoltaic modules, the following parameters should be taken into account: 1.The open circuit voltage (Voc) of the photovoltaic modules does not exceed the maximum open circuit voltage of the inverter. 2.The open circuit voltage (Voc) of the photovoltaic modules should be higher than the minimum battery voltage.
  • Page 11 Vmp: 7 pieces in series 3,150 W 34.67Vdc 8 units in series 3,600 W - Imp: 13.82A 9 pcs in serial 4,050 W Voc: 10 pcs in serial 4,500 W 41.25Vdc 5.5KVA-6.2KVA 11 pcs in serial 4,950 W - Isc: 12.98A 12 pcs in serial 5,400 W 6 pieces in serial and 2 sets...

  • Page 12: Final Assembly

    6 series sets and 2 parallel 6,600 W sets Figure 9 Wiring connection of the photovoltaic module: Follow the steps below to implement the PV module connection: Remove 10 mm insulation sleeve for positive and negative cable Illustration 10 Check the correct polarity of the connection cable from the PV modules and PV input connectors.
  • Page 13 LED indicator Message AC/INV Green Stable The output is powered directly from the mains "Line Mode" Flashing The output is powered by a battery or PV in battery mode. Green Stable Battery charged Flashing Battery on charge FAULT Stable An error has occurred in the inverter.
  • Page 14 Programme settings Programme Description Selection option Output source Network priority In the first instance priority: To Illustration 14 Electricity will be configure the supplied to consumers in priority of the the first instance. Solar load source and battery power will only supply energy to consumers when mains power is unavailable.
  • Page 15 power the consumers at the same time. The mains supply only delivers power to the consumers when the battery voltage drops to a low warning voltage level or a setting point in programme 12. Priority SUB First the solar energy is Illustration 17 charged and then the consumers are powered.
  • Page 16 (Maximum However, the charging charging current current must not be = charging lower than the AC current from charging current set in mains + charging programme 11. current from solar panels). AC input voltage Devices (default) If selected, the range Illustration 20 permissible AC input voltage range will be 90...
  • Page 17 Illustration 26 Support for the PYLON US2000 protocol version 3.5. Illustration 27 Standard communication protocol Lithium battery without If 'LIB' is selected, the communication default battery value will Illustration 28 be suitable for a lithium battery without communication. The battery charging voltage and low DC cut-off voltage can be set in programmes 26, 27 and...
  • Page 18 even if the switch is in the 'off' position. Maximum mains 30A (default) charging current Illustration 40 If selected, the allowable charging current range will be from 2 to the maximum AC charging current specified. Setting the 48V models: 46V (default) voltage point to The setting range is 44.0V to 57.2V for the 48V model, the mains source...
  • Page 19 Mains power will only charge the battery when solar power is not available. Solar energy and the grid at Solar energy and mains the same time power will charge the Illustration 43 battery simultaneously. Solar energy only Solar energy will be the Illustration 44 sole source of charging, regardless of the...
  • Page 20 Stay on the last screen If this option is selected, Illustration 50 the display screen will remain at the last screen the user selected. Backlighting Backlight on (default) Backlight off control Illustration 51 Illustration 52 Overload Bypass disabled Workaround enabled workaround: Illustration 53 (default)
  • Page 21 24V models: default 21.0V, setting range is 20.0V to 27.0V. 48V models: default 42.0V, setting range is 40.0V to 54.0V. Buffer charging Automatic (default) If this option is selected, time (C.V. stage) Illustration 56 the inverter will automatically assess the charging time.
  • Page 22 programme, the battery balancing function will be activated immediately and "E9" will be displayed on the main LCD screen. If "Disable" is selected, the balancing function will be cancelled until the next scheduled balancing arrives according to the setting in programme 37.
  • Page 23 "Solar first" is be greater than the value selected in in programme 45. programme 01. Setting the SOC Illustration 71 Default is 95%, the (State of Charge) setting range is 60% to point to battery 100%. mode when "SBU priority" or "Solar first"...
  • Page 24 A balancing function has been added to the charge controller. It helps to eliminate negative chemical effects such as stratification, a condition in which the acid concentration is greater at the bottom of the battery than at the top. Balancing also helps to remove sulphate crystals that can deposit on the plates.
  • Page 25 If you choose a lithium battery for the inverter, you can only use the lithium battery that we have configured. There are two connectors on the lithium battery: an RS485 port for communication with the BMS and a power cable. To connect the lithium battery, follow the steps below: 1.

  • Page 26: Lcd Settings

    LCD SETTINGS Once connected, you must perform and confirm the following settings: 1. Select programme 05 as the lithium battery type. 2. Confirm the setting values for programmes 41/42/43/44/45. Note: Programmes 43/44/45 are only available with successful communication, they will replace the functions of programmes 12/13/29, which will become unavailable at the same time.
  • Page 27 Dip 1: Set to "ON" represents a transmission rate of 9600 baud. Dip 2, 3 and 4: These are used to set or change the address of the battery group. DIP switches 2, 3 and 4 on the main battery (first battery) are used to set or change the address of the group. NOTE: '1' is the top position and '0' is the bottom position.
  • Page 28 User-defined If 'User-Defined' is selected, the Illustration 89 battery charging voltage and low DC cut-off voltage can be set in programmes 26, 27 and 29. Lithium-ion battery without If 'LIB' is selected, the default communication battery values are suitable for a lithium-ion battery without Illustration 90 communication.
  • Page 29 5. Set the low DC cut-off voltage to at least the BMS discharge protection voltage plus 2 Low DC cut- If 'self-defined' is selected in programme 5, this programme can off voltage be configured. The setting value must be less than the value in programme 12. The change stroke at each click is 0.1 V.
  • Page 30 Setting of the voltage 48V models: the default setting is 46 V. The point for the return to the setting range is 44.0 V to 57.2 V for the 48V power source when "SBU model, but the maximum setting must be less priority"...
  • Page 31 DCDC current overload Current overload or overvoltage Bus voltage is too low Inverter error OP offset current is too high Inverter offset current is too high DC/DC offset current is too high PV offset current is too high Output voltage is too low Negative inverter power WARNING INDICATOR Code...
  • Page 32 Inverter model 1.5KVA 2.5KVA 3.5KVA 5.5KVA 6.2KVA Input voltage waveform Sinusoidal (mains or generator) Nominal input voltage 230V AC Low loss voltage 170V AC ±7V (UPS) 90V AC ±7V (Devices) Low loss voltage 180V AC ±7V (UPS) 100V AC ±7V (Devices) Voltage at high losses 280V AC ±7V Return voltage at high losses...
  • Page 33 Output 230Vac±5% voltage adjustment: Output 50Hz or 60Hz frequency: Maximum efficiency: Peak 2* rated power for 5 seconds capacity: Nominal DC 24Vdc 48Vdc input voltage: Cold start 23.0Vdc 46.0Vdc voltage: DC low level 22.0Vdc 40.4Vdc warning 21.4Vdc 42.8Vdc voltage 20.2Vdc 44.0Vdc Return 23.0Vdc...
  • Page 34 Maximum charging 60Amp 100Amp 100Amp 100Amp 120Amp current (PV+AC) (@ VI/P=230Vac). Maximum charging 60Amp 80Amp current (AC) (@ VI/P=230Vac). Charging Flooded 29.2VDC 58.4VDC voltage in battery Bulk AGM/GEL 28.2VDC 56.4VDC mode Sustaining charge 27VDC 54VDC voltage Protection against 32VDC 63VDC overcharging Charging algorithm 3-stage...
  • Page 35 The unit switches off The LCD/LED display Battery voltage is Charge the battery. automatically during and beeper will be too low Replace the battery. the start-up process. active for 3 seconds and then switch off completely. No response when Battery voltage is Check that the the power is too low.
  • Page 36 The beeper beeps Error code 07 Overload error. The Reduce the load by continuously and the inverter is switching off some red LED is on. overloaded by 110% devices. and the time has expired. Error code 05 Short-circuit at the Check that the wiring output.
  • Page 37 Attachment 1...

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53871

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