Description
xPylontech L260-HY 125kW 261kWh C3H Outdoor Cabinet Hybrid ESS with Solis Inverter
The Pylontech OPTIM US L260-HY is an all in one outdoor energy storage cabinet for commercial and industrial sites. It combines 261kWh of LiFePO4 battery storage with an integrated 125kW Solis three phase hybrid inverter in a single factory built enclosure.
It is designed for PV coupled sites that need peak shaving, solar self-consumption and backup power without assembling separate battery racks, inverters, cooling and fire protection. Up to six cabinets can run in parallel for 1560kWh and 750kW.
Key Features
- 261kWh nominal capacity from five 52.25kWh Pylontech HM7A200L LiFePO4 modules, with 98% depth of discharge.
- Integrated 125kW Solis three phase hybrid inverter with 3/N/PE 230V/400V output.
- Up to 250kW recommended PV array across 10 MPPTs (150V to 950V) and 20 strings.
- Backup switching in under 10ms to keep critical loads running during a grid failure.
- Liquid cooling with a 50% glycol solution and a working temperature range of -25°C to 55°C.
- Built in fire protection with combustible gas, smoke and temperature detection, an explosion proof fan and aerosol suppression.
- 88% system round trip efficiency, with Modbus TCP/RTU communication for site EMS integration.
- Scalable to six cabinets in parallel, from 260kWh to 1560kWh and 125kW to 750kW.
Product Overview
Inside the cabinet, five battery modules are connected in series to form one high voltage string (728V to 936V DC). The string connects to a control module that provides isolation and protection and houses the BMS. Pylontech uses a three level management structure: a BMU in each module monitors cell voltage, current and temperature, the BMS monitors the full string, and the LEMS1000 local energy management system controls the fire protection and cooling and communicates with the inverter or an upper level EMS.
The integrated Solis inverter manages PV, battery, grid and backup loads from one unit, and also provides a generator input for sites that run a diesel generator. This makes the L260-HY suitable for demand charge reduction, time of use tariff shifting, maximising self-consumption from large roof or ground mounted arrays, and protecting essential loads during outages.
The cabinet is supplied with corrosion class C3H as standard, with C5M available as an option for coastal or harsh industrial locations. When planning a site, allow for the normal auxiliary power consumption of around 1.5kW and the cooling unit noise level of 75 dB(A) at 1m.
Applications
- Commercial and industrial peak shaving and demand charge reduction
- Solar PV self-consumption for businesses, farms and public buildings
- Backup power for critical commercial loads
- Time of use tariff arbitrage
- Microgrids combining solar PV, battery storage and diesel generators
- Warehouses and factories with large rooftop or ground mount arrays
What Is Included
- 1 x Pylontech OPTIM US L260-HY outdoor cabinet
- 1 x Solis 125kW three phase high voltage hybrid inverter, factory integrated
- 5 x Pylontech HM7A200L 52.25kWh LiFePO4 battery modules
- 1 x control module with integrated BMS
- 1 x LEMS1000 local energy management system
- 1 x liquid cooling system
- 1 x fire protection system with gas, smoke and temperature detectors, explosion proof fan, aerosol suppression and audible and visual alarm
- 1 x electrical box with MCCBs for grid and backup
- 1 x UPS for the BMS, LEMS and monitoring
- 1 x set of internal and external power and communication cables
Installation and Safety Notes
This is a commercial energy storage system and must be designed, installed and commissioned by qualified professionals. A site assessment and professional system design are required before ordering, and installation should be carried out by an MCS certified installer working with a qualified electrician.
The cabinet is rated IP55 and is designed for outdoor installation on a level concrete base capable of supporting up to 2.9 tonnes. Allow clearance for ventilation, cooling airflow and door access. Offloading and positioning a unit of this weight requires suitable lifting equipment.
The system operates at high DC voltage (up to 936V on the battery string and up to 1000V on the PV input), so only trained personnel should work on it. Cable sizing, fusing, isolation, surge protection and earthing must be designed for the site and comply with BS 7671 (IET Wiring Regulations).
Important: connecting a system of this size to the grid requires a G99 application to your DNO, approved before installation. Please confirm the inverter's current G99 certification with our technical team before submitting your application.
Specifications
xModel Information
| Parameter | Value |
| Model | L260-HY (OPTIM US L260-HY-M7) |
| System rating | M7-1000V-125kW/260kWh |
| Battery modules | 5 x Pylontech HM7A200L |
| Hybrid inverter | Solis S6-EH3P(75-125)K10-NV-YD-H series, 125kW model |
| Parallel operation | Up to 6 cabinets (1560kWh / 750kW) |
Battery Specifications
| Parameter | Value |
| Model | L260-HY |
| Cell chemistry | LiFePO4 (LFP) |
| Nominal capacity | 261kWh |
| DC voltage range | 728V to 936V |
| Depth of discharge | 98% |
| Standard operation DC current | 157A |
| Module energy | 52.25kWh |
| Module nominal voltage | 166.4V |
| Module capacity | 314Ah |
| Module cycle life | 8,000 cycles (under specified operating conditions) |
| Module protection class | IP65 |
| Module dimensions (W x D x H) | 1145 x 790 x 245 mm |
| Module weight | 345 kg |
Input Specifications (PV and Battery)
| Parameter | Value |
| Model | Solis 125kW hybrid inverter |
| Recommended max. PV array size | 250kW |
| Max. usable PV input power | 250kW |
| Max. PV input voltage | 1000V |
| Rated PV voltage | 600V |
| Start-up voltage | 180V |
| MPPT voltage range | 150V to 950V |
| Max. input current | 10 x 42A |
| Max. short circuit current | 10 x 60A |
| MPPT number / max. strings | 10 / 20 |
| Inverter battery voltage range | 300V to 950V |
| Max. charge / discharge current | 100A x 2 / 100A x 2 |
| Battery ports | 2 |
Output Specifications
| Parameter | Value |
| Model | Solis 125kW hybrid inverter |
| Rated output power | 125kW |
| Max. apparent output power (grid) | 125kVA |
| Backup overload | 1.4 x rated power for 10 s; 1.6 x rated power for 200 ms |
| Backup switch time | Under 10ms |
| Rated output voltage | 3/N/PE, 230V/400V (220V/380V) |
| Rated frequency | 50Hz / 60Hz |
| Rated grid output current | 189.9A / 180.4A |
| Max. grid input current | 250A |
| Generator input power | 125kW |
| Max. power per phase | 41.66kW |
| Power factor | Above 0.99 (0.8 leading to 0.8 lagging) |
| THDv / THDi | Below 3% / below 3% |
| Max. efficiency | 97.5% |
| EU efficiency | 97.2% |
| Battery charge / discharge to AC max. efficiency | 97.0% |
Protection and Fire Safety
| Parameter | Value |
| Model | L260-HY |
| Inverter protection | Anti-islanding, output over current, short circuit, integrated DC switch, DC reverse polarity |
| Surge protection | DC Type II / AC Type II |
| Protection class / over voltage category | I / DC II, AC III |
| Integrated AFCI | Optional |
| Fire detection | Combustible gas, smoke and temperature detectors with audible and visual alarm |
| Fire suppression | Fixed aerosol device (JAD300-U01), fire classes A, B, C, E, F |
| Ventilation | Explosion proof fan |
| Emergency stop | EPO button |
General Specifications
| Parameter | Value |
| Model | L260-HY |
| Dimensions (W x H x D) | 1400 x 2200 x 1400 mm |
| Weight | 2.9 t or less |
| Cabinet IP rating | IP55 |
| Inverter IP rating | IP66 |
| Working temperature | -25°C to 55°C |
| Storage temperature | -20°C to 60°C |
| Humidity | 5% to 95% |
| Max. altitude | 3000 m |
| Corrosion protection class | C3H (C5M optional) |
| Battery cooling | Liquid cooling, 50% glycol solution |
| Inverter cooling | Air cooling |
| Cooling unit noise | 75 dB(A) at 1m |
| System efficiency (RTE) | 88% |
| Normal auxiliary power consumption | 1.5kW |
| Communication | Modbus TCP/RTU |
Certifications
| Parameter | Value |
| Model | L260-HY |
| Cabinet | IEC 62619, IEC 62477, CE EMC, UN38.3 |
| Battery module transport | UN38.3 |
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.