Description
xConversol 11kW Ultra-Max Off-Grid Inverter Dual AC Output
The Conversol 11kW Ultra-Max is a high-capacity off-grid inverter and charger designed for large residential, commercial, and critical backup power systems. With dual AC input and output connections, two independent MPPT solar controllers, and a combined 12kW of PV input capacity, it delivers serious off-grid power with full parallel capability for multi-unit expansion.
Key Features
- 11kW continuous output with 22kVA surge capacity
- Dual AC inputs and outputs for split or independent load management
- Two independent MPPT solar chargers, up to 12kW total PV input
- Up to 6 units in parallel for large-scale off-grid systems
- 48V battery input with 150A combined charging current
- Pure sine wave output for sensitive equipment
- Communication via USB, RS232, RS485, Wi-Fi, and Bluetooth
- Built-in dry contact, GFCI, rapid shutdown, and AFCI detection support
Product Overview
Built for demanding off-grid environments, the Conversol Ultra-Max 11kW combines a high-output inverter with dual MPPT solar chargers and a robust AC charger in a single enclosure. The dual AC architecture allows independent connection of critical and non-critical loads, giving installers precise control over load priorities and switching behaviour.
With MPPT voltage range from 90V to 450VDC and open circuit voltage up to 500VDC, the system accommodates a wide variety of PV string configurations. Battery charging is highly flexible, with support for lead-acid and lithium battery chemistries. Up to six units can be paralleled for installations requiring 66kW or more of off-grid capacity.
Applications
- Large residential off-grid solar systems
- Commercial and agricultural off-grid installations
- Critical backup power for business continuity
- Remote sites, telecom infrastructure, and data cabins
- High-capacity battery storage systems
What Is Included
- Conversol 11kW Ultra-Max off-grid inverter/charger unit
- Communication cable and accessories
- User manual
Installation and Safety Notes
This inverter must be installed by a qualified electrician or accredited solar installer. Correct battery cabling, fusing, and DC isolators are essential. Ensure battery bank voltage, capacity, and chemistry match the inverter configuration before commissioning. Parallel operation requires compatible firmware and synchronisation cabling. Do not attempt installation without reviewing the full installation manual and complying with all applicable wiring regulations.
Specifications
x| CONVERSOL 11KW MAX ULTRA | |||
| MODEL | VOLTACON Ultra 11K | ||
| Rated Inverter Power | 11000VA/11000W | ||
| PARALLEL CAPABILITY | 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 (Batt. Mode) | 230VAC ± 5% | ||
| Surge Power | 22000VA | ||
| Efficiency (Peak) | 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 Range @ Operating Voltage | 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 | ||
| PHYSICAL | |||
| 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 | ||
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.