Voltronic Power Axpert MAX E Duplex 11K

Voltronic 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.

  • AC Voltage Regulation (Batt. Mode): 230VAC ± 5%
  • Surge Power: 22000VA
  • Efficiency (Peak): 93%
  • Transfer Time: 10ms / 20ms
AED 4,638incl. VAT

In stock

Full SpecificationsDownload datasheet (PDF)

Voltronic Axpert MAX E Duplex 11K features

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.

About the Voltronic Axpert MAX E Duplex 11K

The Axpert MAX E Duplex 11K is an 11000W off-grid solar inverter with a 22000VA surge rating, two independent PV inputs accepting 27A each (40A maximum), a 90Vdc to 450Vdc MPPT window, and 150A of charge current into a 48 VDC battery bank at a peak efficiency of 93%. The two inputs are what separate the Duplex 11K from a single-input unit of the same rating: an 11000W array can be split 5500W x 2 across two roof faces, each string beginning at 80V ±5Vdc and staying under a 500Vdc open-circuit ceiling. Output imbalance is held below 5% at 100% load and DC offset to 100mV or less, while the waveform stays sinusoidal on utility or generator input. On the grid side the Duplex 11K regulates to 230VAC ± 5% in battery mode, accepts 230Vac up to 300Vac at 60A, auto-detects 50Hz or 60Hz, protects the line with a 70A breaker and transfers in max 50ms. Six units run in parallel over USB/RS232/RS485/WiFi/Dry-contact. The 18.4 kg chassis measures 432.5 x 553.6 x 147.4 mm and runs from -10°C to 50°C. We are an authorised Voltronic Power distributor.

Specifications last updated 27 March 2026

Voltronic Axpert MAX E Duplex 11K full specifications

Electrical

Circulation Current under No Load ConditionMax 2A
Efficiency (Line Mode)>95% (Rated R load, battery full charged)
High Loss Frequency65±1Hz
High Loss Return Frequency63±1Hz
High Loss Return Voltage270Vac±7V
High Loss Voltage280Vac±7V
Low Loss Frequency40±1Hz
Low Loss Return Frequency42±1Hz
Low Loss Return Voltage180Vac±7V (UPS); 100Vac±7V (Appliances)
Low Loss Voltage170Vac±7V (UPS) 90Vac±7V (Appliances)
Max AC Input Current60A
Max AC Input Voltage300Vac
Max. Charging Current150A
Max. Input Current27A x 2 (MAX 40A)
Max. PV Array Open Circuit Voltage500Vdc
Nominal Input Frequency50Hz/60Hz (Auto detection)
Nominal Input Voltage230Vac
Output Short Circuit ProtectionLine mode: Circuit Breaker (70A) Battery mode: Electronic Circuits
PV Array MPPT Voltage Range90Vdc 450Vdc
Parallel KitYES
Parallel communicationCAN
Power Unbalance Ratio<5% 100% Load
Transfer time in parallel modeMax 50ms
Max parallel numbers6
DC Offset≤100mV
High DC Cut-off Voltage63Vdc
High DC Recovery Voltage61Vdc
Peak Efficiency93%
Battery56.4Vdc
Charging Current150A UPS
DC VoltageDC Offset ≦100mV Power Limitation 55Vdc
Efficiency>95% ( Rated R load Line Mode
Floating Charging Voltage54Vdc
Input Voltage WaveformSinusoidal (utility or generator) Nominal
Output Frequency60Hz or 50Hz Peak
Output Voltage Regulation230Vac± 5%
Overcharge Protection63Vdc Charging Algorithm 3-Step Charging Curve Time
Overload ProtectionSurge
Rated Output Power11000W
Rated Power11000W Max. PV Array Open Circuit
Safety CertificationCE
Start-up Voltage80V +/- 5Vdc Power Limitation PV Current MPPT temperature 75° 80°
Transfer Time10ms typical (UPS);
AC Voltage Regulation (Batt. Mode)230VAC ± 5%
Surge Power22000VA
Efficiency (Peak)93%
WaveformPure sine wave
Battery Voltage48 VDC
Floating Charge Voltage54 VDC
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 InterfaceUSB/RS232/RS485/WiFi/Dry-contact
Compliance SafetyCE

Mechanical

Dimension, D x W x H (mm)147.4 x 432.5 x 553.6
Net Weight (kgs)18.4

Environmental

Humidity5% to 95%
Operating Temperature Range-10°C to 50°C
Storage temperature-15°C~ 60°C
Operating Temperature-10°C to 50°C

Certifications

  • CE

Related Products

Related Articles

Solar Inverters for UAE Homes: Grid-Tie, Hybrid, and Off-Grid Options

Choose the right solar inverter for your UAE home. Compare grid-tie, hybrid, and off-grid inverters. DEWA Shams Dubai compliance and net metering explained.

Read: Solar Inverters for UAE Homes: Grid-Tie, Hybrid, and Off-Grid Options →

Voltronic Axpert vs Must Solar Inverters: Which Platform Wins?

Compare Voltronic Axpert and Must Solar off-grid inverters. Build quality, specifications, parallel capability, support network, and long-term value.

Read: Voltronic Axpert vs Must Solar Inverters: Which Platform Wins? →

How to Monitor Voltronic Inverters and UPS via WiFi

Set up WiFi monitoring for Voltronic Axpert, InfiniSolar, and UPS systems. App configuration, cloud dashboard, alerts, and troubleshooting tips.

Read: How to Monitor Voltronic Inverters and UPS via WiFi →