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

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

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

SKU: AXPERT-MAX-II-TWIN-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%
Communication InterfaceUSB/RS232/RS485/WiFi/Dry-contact
Compliance SafetyIEC 62109, IEC 61683, EN/IEC 61000-6-2, 61000-6-4, 61000-3-11, 61000-3-12
Rated Power11000VA/11000W
Surge Power22000VA
Maximum PV Array Power13000W (6500W x 2)
Maxmum Solar Charge Current150A
Maximum AC Charge Current150A
Maximum Charge Current150A
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 Voltage300Vac
Max. PV Array Open Circuit Voltage500Vdc
Nominal Input Frequency50Hz/60Hz (Auto detection)
Output Short Circuit ProtectionLine mode: Circuit Breaker (70A) Battery mode: Electronic Circuits
PV Array MPPT Voltage Range90Vdc 450Vdc
Start-up Voltage80V +/- 5Vdc
Low DC Cut-off Voltage44Vdc
Nominal DC Input Voltage48Vdc
Cold Start Voltage46.0Vdc
Floating Charging Voltage54Vdc
Input Voltage WaveformSinusoidal (utility or generator) Nominal
OutputCharge Time to
Overload ProtectionSurge
Safety CertificationCE
WaveformPure sine wave
Solar Charger TypeMPPT
Parallel KitYES
Parallel communicationCAN
Output PowerFor 8KW model, when

🔧Mechanical Specifications

🌡️Environmental Specifications

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

📏Dimensions

Width503.6 mm
Height530.8 mm
Depth158.4 mm
Weight20.0 kg