Conversol 11kW Ultra-Max Off-Grid Inverter | Dual AC Output 48V
£1,101.45inc VAT £917.88exc VAT
The Conversol 11kW Ultra-Max is an off-grid inverter and charger built for large residential, commercial and critical backup power systems. Dual AC input and output connections combine with two independent MPPT solar controllers and a combined 12kW of PV input capacity, giving installers a single unit capable of serious off-grid duty with full parallel expansion.
The Ultra-Max communicates via USB, RS232, RS485, Wi-Fi and Bluetooth, and includes built-in dry contact, GFCI, rapid shutdown and AFCI detection support.
Built for demanding off-grid environments, the Ultra-Max pairs a high-output inverter with dual MPPT solar chargers and an AC charger in one enclosure. The dual AC design lets installers wire critical and non-critical loads separately, with precise control over priority and switching behaviour.
MPPT voltage range runs from 90V to 450VDC, with open circuit voltage up to 500VDC, so the system accepts a wide range of PV string configurations. Battery charging supports both lead-acid and lithium chemistries. Up to six units can be paralleled for installations needing 66kW or more of off-grid capacity.
Suited to large residential off-grid solar systems, commercial and agricultural installations, critical backup power for business continuity, remote sites and telecom infrastructure, and high-capacity battery storage systems.
Installation must be carried out by a qualified electrician or accredited solar installer. Battery cabling, fusing and DC isolators need to be correctly sized, and battery bank voltage, capacity and chemistry must match the inverter configuration before commissioning. Parallel operation requires compatible firmware and synchronisation cabling. Do not install without reviewing the full manual and complying with applicable wiring regulations.
| Conversol 11kW Ultra-Max | |
| Model | VOLTACON Ultra 11K |
| Inverter power rating | 11000VA/11000W |
| Parallel operation | YES, 6 units |
| Input (utility & generator power) | |
| Voltage | 230 VAC |
| Selectable voltage range | 170-280 VAC (For Computers) / 90-280 VAC (For Home Appliances) |
| Frequency range | 50 Hz/60 Hz (Auto sensing) |
| Output | |
| AC voltage regulation (battery mode) | 230VAC ± 5% |
| Surge power | 22000VA |
| Peak efficiency | 93% |
| Transfer time | 10 ms (Personal Computers) / 20 ms (Home Appliances) |
| Waveform | Pure Sine Wave |
| Battery | |
| Battery voltage | 48 VDC |
| Floating charge voltage | 54 VDC |
| Overcharge protection | 63 VDC |
| Solar charger & AC charger | |
| Maximum PV array power | 12000W (6000W x 2) |
| MPPT operating voltage range | 90 ~ 450 VDC |
| Maximum PV array open circuit voltage | 500 VDC |
| Maximum PV input current | 27A x 2 (MAX 40A) |
| Maximum solar charge current | 150A |
| Maximum AC charge current | 150A |
| Maximum charge current | 150A |
| Dimensions & weight | |
| Dimension, D x W x H (mm) | 145 x 438 x 553.6 |
| Net weight (kgs) | 18.4 |
| Communication interface | USB/RS232/RS485/WiFi/Dry-contact/BTS |
| Operating environment | |
| Humidity | 5% to 95% RH (Non-condensing) |
| Operating temperature | -10°C to 50°C |
| Storage temperature | -15°C to 60°C |
| Compliance | CE |
Manufacturer datasheet. Figures as published by the manufacturer.
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