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LONGi 520W Hi-MO X6 Max Explorer HPBC Half Cell Black Frame MC4-EVO2 Solar Panel
LONGi 520W Hi-MO X6 Max Explorer HPBC Half Cell Black Frame MC4-EVO2 Solar Panel
The LONGi Hi-MO X10 is an HPBC 2.0 back-contact solar panel. LONGi's HPBC back-contact cells carry no front-side busbars, so the whole front surface collects light and the module presents a uniform face. It delivers 23.0 % module efficiency from a 1,990 × 1,134 mm frame.
About the LONGi Hi-MO X10 range
Hi-MO X10 is LONGi's high-end residential platform. LONGi rates the HPBC 2.0 cell for higher generation from the same area, a gridline-free low-glare face, and an anti-shading function that limits localised overheating where part of the array is shaded.
At 1,990 × 1,134 mm it is a residential-format module, sized to fit the rafter spans and roof planes of a standard UK house.
Why installers specify this panel
- −0.280 %/°C power temperature coefficient — output falls away more slowly as the modules heat up through the middle of the day.
- Hail tested to 25 mm at 23 m/s — relevant for exposed and upland UK sites.
- All-black appearance — a black anodised frame and dark cells, for domestic roofs where the array has to be discreet.
- Long-dated warranty — 25-year power warranty; first-year degradation under 1 %, 0.40 % per year from year 2 to 25.
- 0 to +3 % power tolerance — every module is sorted to meet or beat its 520 W nameplate rating.
Electrical characteristics (STC)
| Rated power (Pmax) | 520 W |
| Module efficiency | 23.0 % |
| Open-circuit voltage (Voc) | 44.10 V |
| Voltage at maximum power (Vmp) | 37.24 V |
| Short-circuit current (Isc) | 14.95 A |
| Current at maximum power (Imp) | 13.97 A |
| Power tolerance | 0 to +3 % |
| Maximum system voltage | DC 1500 V (IEC) |
| Maximum series fuse rating | 25 A |
STC: AM1.5, 1,000 W/m², 25 °C cell temperature.
Mechanical specification
| Cell technology | HPBC 2.0 back-contact |
| Number of cells | 120 (6 × 20) |
| Glass | Single glass, 3.2 mm coated tempered |
| Frame | Anodised aluminium alloy |
| Dimensions (H × W × D) | 1,990 × 1,134 × 30 mm |
| Weight | 24.8 kg |
| Junction box | IP68 |
| Cable | 4 mm², ±1,400 mm |
Temperature and load ratings
| Temperature coefficient of Pmax | −0.280 %/°C |
| Temperature coefficient of Voc | −0.230 %/°C |
| Temperature coefficient of Isc | +0.050 %/°C |
| Operating temperature | −40 °C to +85 °C |
| Nominal operating cell temperature | 45 ±2 °C |
| Maximum static load | 5,400 Pa front / 2,400 Pa back |
| Hail test | 25 mm Hailstone at the speed of 23m/s |
| Hailstone test | 25 mm hailstone at 23 m/s |
| Protection class | Class II |
Warranty and certification
25-year power warranty; first-year degradation under 1 %, 0.40 % per year from year 2 to 25.
Array sizing
Each panel covers 2.26 m². A 4 kWp array needs 8 of them (4.16 kWp over about 18 m²). A 6 kWp array needs 12 of them (6.24 kWp over about 27 m²). Each module weighs 24.8 kg.
About LONGi
LONGi is one of the largest solar manufacturers in the world and the company behind the Hi-MO series. Its HPBC back-contact platform is the successor to the PERC modules it shipped in volume for a decade, and it is manufactured to IEC 61215 and IEC 61730 under ISO 9001, ISO 14001, ISO 45001 and IEC 62941 quality systems.
Videos
Datasheets, installation manuals and warranty documents for the LONGi Hi-MO X10 are in the Documents tab below. Buying for a project? Contact our sales team at sales@clearraysolar.com for pallet pricing.
Build your complete solar system
Everything you need in one place.
- Inverters
- Batteries
- Mounting Systems
- Cabling & Accessories
- Protection Devices
Delivery times vary by region:
- UK — 1-2 business days
- Highlands & Islands — 1-2 business days
Returns accepted within 14 days of delivery for unused items in original packaging.
