Voltronic Power Inverters AXPERT-MAX-E-DUPLEX-11K / AXPERT-MAX-E-DUPLEX-11K

An 11000W off-grid inverter whose two independent 27A PV inputs let one Duplex 11K carry a 5500W x 2 array across two roof faces, each string starting at 80V ±5Vdc.

Models Covered: VOLTRONIC-AXPERT-MAX-E-DUPLEX-11K, AXPERT-MAX-E-DUPLEX-11K

Manufacturer: Voltronic Power Technology Corp.

Application: The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K is an Off-Grid Inverter with a rated power of 11000W, making it a dependable choice for off-grid, hybrid and backup power installations. It accepts an operating voltage range of 90 VDC 450 VDC. It operates at an efficiency of >95% (Rated R load, battery full charged). Its output waveform is Sinusoidal (utility or generator) Nominal. The unit measures 147.4 x 432.5 x 553.6 and weighs 18.4. It is rated to operate across -10°C to 50°C, with a humidity tolerance of 5% to 95%. Monitoring and control are available over USB/RS232/RS485/WiFi/Dry-contact. The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K is certified to CE and is backed by a 2-year manufacturer warranty from Voltronic Power. Its published specifications also list Circulation Current under No Load Condition of Max 2A, High Loss Frequency of 65±1Hz and High Loss Return Frequency of 63±1Hz.

Models and prices

Technical Specifications

Technical Specifications
ParameterVOLTRONIC-AXPERT-MAX-E-DUPLEX-11KAXPERT-MAX-E-DUPLEX-11K
Electrical Data
Circulation Current under No Load ConditionMax 2A
Efficiency (Line Mode)>95% (Rated R load, battery full charged)
High Loss Return Frequency63±1Hz
Low Loss Return Voltage180Vac±7V (UPS); 100Vac±7V (Appliances)
Low Loss Voltage170Vac±7V (UPS) 90Vac±7V (Appliances)
Max AC Input Current60A
Max. Input Current27A x 2 (MAX 40A)
Max. PV Array Open Circuit Voltage500Vdc
Nominal Input Voltage230Vac
PV Array MPPT Voltage Range90Vdc 450Vdc
Transfer time in parallel modeMax 50ms
High DC Cut-off Voltage63Vdc
Peak Efficiency93%
Battery56.4Vdc
Charging Current150A UPS
Efficiency>95% ( Rated R load Line Mode
Floating Charging Voltage54Vdc
Output Voltage Regulation230Vac± 5%
Rated Output Power11000W
Rated Power11000W Max. PV Array Open Circuit
Safety CertificationCE
Additional Specifications
High Loss Frequency65±1Hz
High Loss Return Voltage270Vac±7V
High Loss Voltage280Vac±7V
Low Loss Frequency40±1Hz
Low Loss Return Frequency42±1Hz
Max AC Input Voltage300Vac
Max. Charging Current150A
Nominal Input Frequency50Hz/60Hz (Auto detection)
Output Short Circuit ProtectionLine mode: Circuit Breaker (70A) Battery mode: Electronic Circuits
Parallel KitYES
Parallel communicationCAN
Power Unbalance Ratio<5% 100% Load
Max parallel numbers6
DC Offset≤100mV
High DC Recovery Voltage61Vdc
DC VoltageDC Offset ≦100mV Power Limitation 55Vdc
Input Voltage WaveformSinusoidal (utility or generator) Nominal
Output Frequency60Hz or 50Hz Peak
Overload ProtectionSurge
Start-up Voltage80V +/- 5Vdc Power Limitation PV Current MPPT temperature 75° 80°
Selectable Voltage Range170-280 VAC (For Personal Computers) 90-280 VAC (For Home Appliances)
Maxmum Solar Charge Current150A
Battery
Overcharge Protection63Vdc Charging Algorithm 3-Step Charging Curve Time63 VDC
Battery Voltage48 VDC
Floating Charge Voltage54 VDC
AC Output
Transfer Time10ms typical (UPS);10 ms (For Personal Computers), 20 ms (For Home Appliances)
AC Voltage Regulation (Batt. Mode)230VAC ± 5%
Surge Power22000VA
Efficiency (Peak)93%
WaveformPure sine wave
Solar Charger & AC Charger
Maximum PV Array Power11000W (5500W x 2)
MPPT Range @ Operating Voltage90 – 450 VDC
Maximum PV Array Open Circuit Voltage500 VDC
Maximum PV Input Current27A x 2(MAX 40A)
Maximum Solar Charge Current150A
Maximum AC Charge Current150A
Maximum Charge Current150A
Communication
Communication InterfaceUSB/RS232/RS485/WiFi/Dry-contact
Standard
Compliance SafetyCE
Physical
Dimension, D x W x H (mm)147.4 x 432.5 x 553.6
Net Weight (kgs)18.4
Operating Environment
Humidity5% to 95%5% to 95% Relative Humidity(Non-condensing)
Storage Temperature-15°C~ 60°C-15°C to 60°C
Operating Temperature-10°C to 50°C
Operating Conditions
Operating Temperature Range-10°C to 50°C

Figures are measured at the test conditions the manufacturer’s datasheet states. A dash means the manufacturer publishes no figure for that model.

Availability & grid compliance in the UAE

MarketUAE
Grid authority / regulatorDEWA, ADDC, SEWA
Quotation currencyAED
Support hours timezoneAsia/Dubai
Main citiesDubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah

Figures on this page are the manufacturer's own, measured at the test conditions the datasheet states — they do not change by country. What changes is the approval that has to be met before the unit is energised: in the UAE that rests with the local authorities (DEWA, ADDC, SEWA). Confirm the grid code, import requirements and any local certification with them, or with us, before you order.

For prices, see Voltronic Inverters: Prices in UAE. Store pickup — collect your order from our store in Dubai or Riyadh.

Key Features & Technical Highlights

  • Two independent PV inputs at 27A each: Each of the two PV inputs accepts 27A, 40A maximum, so an 11000W array can be split 5500W x 2 instead of being forced onto one tracker.
  • 11000W rated output with 22000VA surge: The Duplex 11K delivers 11000W continuously and absorbs a 22000VA surge, holding a sinusoidal waveform on utility or generator input.
  • 150A charging into a 48 VDC bank: Charge current reaches 150A from solar and 150A from AC into a 48 VDC bank, on a 3-step charging curve with 54Vdc float and 63Vdc overcharge cutoff.
  • Output imbalance under 5% at 100% load: Output imbalance stays below 5% at 100% load and DC offset at 100mV or less, with regulation of 230VAC ± 5% in battery mode.
  • 90Vdc-450Vdc MPPT with a 500Vdc ceiling: The MPPT tracks from 90Vdc to 450Vdc, tolerates 500Vdc open circuit and each string begins working at 80V ±5Vdc.
  • Six units in parallel, 18.4 kg each: Up to 6 units run in parallel over USB/RS232/RS485/WiFi/Dry-contact, each unit 18.4 kg and 432.5 x 553.6 x 147.4 mm, rated -10°C to 50°C.

Frequently Asked Questions

What is the rated power of the Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K?

The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K has a rated power of 11000W and a surge capability of 22000 VA.

What voltage does the Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K operate on?

The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K has a nominal voltage of 48 VDC and an operating voltage range of 90 VDC 450 VDC.

What are the physical dimensions and weight of the Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K?

The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K measures 147.4 x 432.5 x 553.6 and weighs 18.4.

What is the operating temperature range of the Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K?

The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K operates across -10°C to 50°C and a humidity range of 5% to 95%.

What is the efficiency of the Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K?

The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K has an efficiency of >95% (Rated R load, battery full charged).

What solar input can the Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K handle?

The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K supports a maximum PV array power of 11000W (5500W x 2), a maximum solar charge current of 150A and a maximum PV array open-circuit voltage of 500 VDC.

What transfer time and output waveform does the Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K provide?

The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K has a transfer time of Max 50ms and an output waveform of Sinusoidal (utility or generator) Nominal.

How does the Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K regulate voltage?

The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K provides a voltage regulation of 230 VAC± 5%.

What communication options does the Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K offer?

The Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K offers USB/RS232/RS485/WiFi/Dry-contact connectivity for monitoring and control.

Can multiple Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K units run in parallel?

Yes — the Voltronic 11 kW Off-Grid Solar Inverter Axpert MAX E Duplex 11K supports parallel operation (YES).