Description
xVoltasol ESS 5.5kW Hybrid Solar Inverter 48V
The Voltasol ESS 5.5kW Hybrid Solar Inverter from Voltacon is a powerful single-phase inverter and battery charger designed for both grid-connected and off-grid solar energy systems. It is suitable for residential solar storage, backup power, self-consumption systems and installations using 48V lithium batteries.
This unit is nearly new and fully working. It was exchanged only because the customer upgraded to a three-phase inverter. There are some cosmetic marks on the metal case and the original box is not available, but the inverter is fault-free, updated with the latest firmware and supplied with the required accessories.
ENA Registered G98/G99 Compliant
The inverter is ENA registered and compliant with G98/G99 requirements for UK grid-connected installations. It can be used as a hybrid inverter operating in parallel with the grid, or as an off-grid inverter where no utility supply is available.
Key Features
- 5.5kW continuous single-phase output
- 48V battery system for lithium or lead-acid batteries
- Compatible with Pylontech US2000C, US3000C and US5000C lithium batteries
- Latest firmware already installed
- ENA registered and G98/G99 compliant
- Pure sine wave AC output for sensitive appliances
- 100A solar and AC battery charger
- Suitable for grid-connected, hybrid and off-grid operation
- Backup output for critical loads during a mains failure
- Adjustable export control from 0W to 5500W
- Programmable supply priority for solar, battery or grid
- Timer charging function for low-cost electricity tariffs
- Energy meter and Modbus communication card included
- BMS cable included for Pylontech battery communication
Condition
This inverter is almost new and in excellent working condition. It was removed from a working installation because the customer changed to a three-phase system. The inverter has no operational fault and has been updated with the latest firmware.
Please note that the metal case has some minor marks and the original box is not included. This is a very competitive price for a fully functional 5.5kW hybrid inverter with accessories included.
What Is Included
- 1 x Voltasol ESS 5.5kW inverter and charger
- 1 x Pair of MC4 solar connectors
- 1 x Eastron energy meter
- 1 x BMS communication cable
- 1 x Modbus communication card
- 1 x Free 3.2W Specter LED solar light
Hybrid and Off-Grid Operation
When used off-grid, the inverter can supply standard AC loads up to 5500W at 230V/240V AC. This makes it suitable for homes, cabins, farms, workshops and backup power systems where a utility supply is not available or not required.
When used in hybrid mode with the grid, the inverter can supply household loads from solar and battery energy first. If the load demand is higher than the available solar or battery power, the national grid can support the additional demand.
The AC backup output can also be used to supply selected critical loads during a power cut. This is ideal for fridge/freezers, lighting, internet routers, servers, pumps and other essential circuits.
Pylontech Battery Communication
The correct BMS cable is included for communication with Pylontech US2000C, US3000C and US5000C lithium batteries. To use the RS485 communication port of the battery, the first DIP switch on the master battery should be set as follows:
- DIP switch 1: Up
- DIP switch 2: Down
- DIP switch 3: Down
- DIP switch 4: Down
Once correctly configured, the inverter can communicate with the battery BMS to manage charging, discharging and battery protection more effectively.
Operating Modes
- Off-grid operation with solar and battery power
- Hybrid operation with solar, battery and grid support
- Grid-connected self-consumption with export control
- Backup supply for selected essential loads
- Timed grid charging for economy tariff periods
- Adjustable export limitation from 0W to 5500W
Technical Specifications
| Product | Voltasol ESS Hybrid Solar Inverter |
| Rated Output Power | 5500W / 5.5kW |
| AC Output | Single-phase 230V/240V AC |
| Battery Voltage | 48V DC |
| Battery Compatibility | Pylontech US2000C, US3000C, US5000C, compatible legacy models and lead-acid batteries |
| Charger Rating | 100A solar and AC charger |
| Output Waveform | Pure sine wave |
| Export Control | Adjustable from 0W to 5500W |
| Communication | USB, RS232, Modbus, SNMP, GPRS and Wi-Fi support |
| Grid Compliance | ENA registered, G98/G99 compliant |
| Included Accessories | Energy meter, Modbus card, BMS cable and MC4 connectors |
| Condition | Nearly new, fully working, minor cosmetic marks, no original box |
Applications
- Residential solar battery storage systems
- Hybrid solar PV systems with grid support
- Off-grid homes, cabins, farms and workshops
- Backup power for selected essential circuits
- Self-consumption systems with export limitation
- Pylontech 48V lithium battery installations
Installation and Safety Notice
This inverter must be installed by a qualified electrician or professional solar installer. Correct cable sizing, battery protection, DC and AC isolation, earthing and grid compliance must be followed. For grid-connected installations, G98 notification or G99 approval may be required depending on the system design and export settings.
Hybrid inverter and battery systems should not be installed by unqualified persons. Always follow the installation manual and the relevant electrical regulations.
Specifications
x| Parameter | Value |
| Model | ESS 5.5kW |
| Rated Output Power | 5500 W |
| Maximum PV Input Power | 6500 W |
| Maximum Charging Power | 2880 W |
| Nominal / Max DC Voltage | 360 VDC / 500 VDC |
| Start-up / Initial Feeding Voltage | 116 VDC / 150 VDC |
| MPP Voltage Range | 120–450 VDC |
| Number of MPPT / Max Input Current | 2 / 2 x 13A |
| Nominal Output Voltage | 208/220/230/240 VAC |
| Output Voltage Range | 184–264.5 VAC |
| Max Output Current | 23.9 A |
| Max Conversion Efficiency (DC/AC) | 96% |
| European Efficiency | 95% |
| Max AC Input Current | 40 A |
| Battery Mode Efficiency (DC/AC) | 93% |
| Nominal Battery Voltage | 48 VDC |
| Maximum Charging Current | 100 A |
| Dimensions (D x W x H) | 214 x 621 x 500 mm |
| Net Weight | 25 kg |
| Compliance | IEC/EN 62109-1/-2, IEC 62040-1, EN 61000-6-4, IEC 61727, IEC 62116, G99, NRS 097-2-1, EN 50549-1 |
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.