Voltronic Power Axpert MAX II Duplex 11K Off-Grid Solar Inverter

Voltronic Power Solar Inverter Datasheet — AXPERT-MAX-II-DUPLEX-11K

The Axpert MAX II Duplex 11K is an off-grid solar inverter rated Axpert MAX II Duplex 11K.

SKU: AXPERT-MAX-II-DUPLEX-11K | Last Updated: 2026-08-18

⚡Electrical Specifications

Parallel CapabilityYES, 6 units
Selectable Voltage Range170-280 VAC (For Personal Computers)
AC Voltage Regulation (Batt. Mode)230VAC ±5%
Efficiency (Peak)93%
MPPT Range @ Operating Voltage90-450 VDC
Maximum PV Input Current27A x 2 (MAX 40A)
Maxmum Solar Charge Current150A
Maximum Charge Current150A
Communication InterfaceUSB/RS232/RS485/WiFi/Dry-contact
Rated Power11000VA/11000W
Surge Power22000VA
Maximum PV Array Power11000W (5500W x 2)
Maximum AC Charge Current150A
Transfer Time10 ms (For Personal Computers) ; 20 ms (For Home Appliances)
DC Voltage12 VDC ±5%, 100W
Floating Charge Voltage54 VDC
Maximum PV Array Open Circuit Voltage500 VDC
WaveformPure sine wave
Compliance SafetyCE
Battery Voltage48 VDC
Overcharge Protection63 VDC
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
Nominal Input Frequency50Hz/60Hz (Auto detection) | 50Hz/60Hz (
Output Short Circuit ProtectionLine mode: Circuit Breaker (70A) Battery mode: Electronic Circuits
Parallel KitYES
Parallel communicationCAN
Start-up Voltage80V +/- 5Vdc
High DC Recovery Voltage61Vdc | 64Vdc
Low DC Cut-off Voltage44Vdc
Cold Start Voltage46.0Vdc
Input Voltage WaveformSinusoidal (utility or generator) Nominal
Overload ProtectionSurge
Output PowerFor 8KW model, when

🔧Mechanical Specifications

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

🌡️Environmental Specifications

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

📏Dimensions

Width
Height
Depth
Weight