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VOLFAC Energy
LONGi / Hi-MO 7PV moduleBifacial dual-glass module
Bifacial dual glass.132 half-cells, 595 to 625 W.
LONGi

Solar modules / Utility

LR8-66HGD-610M

Bifacial dual-glass module · 595 to 625 W

A bifacial dual-glass module that LONGi positions for utility power plants. Select the power class, review the specifications and bring your requirements to VOLFAC.

Rated power
610 W
Module efficiency
22.6 %
Cells
132
Weight
32.5 kg
Select power classLR8-66HGD familyLR8-66HGD 595–625M family
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Product overview

High bifaciality for ground-mounted plants.

The LR8-66HGD-610M is a Hi-MO 7 module with 132 half-cells (6 × 22) of LONGi’s HPDC cell technology between two panes of 2.0 mm heat-strengthened glass. LONGi rates the type at 595 to 625 W with up to 23.1 % efficiency, a bifaciality of 80 ± 5 % and a temperature coefficient of −0.28 %/°C for maximum power. It measures 2,382 × 1,134 × 30 mm, weighs 32.5 kg and is built for 1,500 V systems.

Technical specifications

Know the details.

LR8-66HGD-610M
LONGiFamily LR8-66HGDModel LR8-66HGD-610M
Brand LONGiFamily LR8-66HGD 595–625MSelected model LR8-66HGD-610M

Electrical data at STC

Maximum power (Pmax)
610 W
Open-circuit voltage (Voc)
48.38 V
Short-circuit current (Isc)
15.95 A
Voltage at maximum power (Vmp)
40.51 V
Current at maximum power (Imp)
15.06 A
Module efficiency
22.6 %
Power output tolerance
0 to +3 %
STC
AM 1.5, 1,000 W/m², 25 °C; test uncertainty for Pmax ± 3 %

Electrical data at NOCT

Maximum power (Pmax)
464.3 W
Open-circuit voltage (Voc)
45.98 V
Short-circuit current (Isc)
12.81 A
Voltage at maximum power (Vmp)
38.50 V
Current at maximum power (Imp)
12.06 A
NOCT
AM 1.5, 800 W/m², 20 °C, wind 1.0 m/s

Temperature ratings and operating parameters

Temperature coefficient of Pmax
−0.280 %/°C
Temperature coefficient of Voc
−0.230 %/°C
Temperature coefficient of Isc
+0.045 %/°C
Nominal operating cell temperature
45 ± 2 °C
Operational temperature
−40 °C to +85 °C
Maximum system voltage
1,500 V DC (IEC/UL)
Maximum series fuse rating
35 A
Bifaciality
80 ± 5 %
Protection class
Class II
Fire rating
UL type 29; IEC Class C

Mechanical parameters

Cell orientation
132 (6 × 22)
Dimensions
2,382 × 1,134 × 30 mm (length and width ± 2 mm)
Weight
32.5 kg
Glass
Dual glass, 2.0 + 2.0 mm heat-strengthened glass
Frame
Anodized aluminium alloy
Junction box
IP68, three diodes
Output cable
4 mm², +400 / −200 mm or ± 1,400 mm; length can be customised
Front side maximum static loading
5,400 Pa
Rear side maximum static loading
2,400 Pa
Hailstone test
25 mm hailstone at 23 m/s

Packaging

Modules per pallet
36
Modules per 20' GP container
144
Modules per 40' HC container
720 (576 for the USA only)

Certificates

Product certifications
IEC 61215, IEC 61730, UL 61730
Management systems
ISO 9001:2015, ISO 14001:2015, ISO 45001:2018; IEC 62941

Manufacturer warranty statement

Materials and processing
12 years
Linear power output
30 years
First-year power degradation
< 1 %
Power degradation, years 2 to 30
0.4 % per year

Source: LONGi product pageLONGi — Hi-MO 7 product page and the datasheet LR8-66HGD 595~625M (V3.2, 28 October 2025).

Downloads

Product documents.

  • Technical datasheetLR8-66HGD 595–625M · English · PDFLR8-66HGD 595–625M · English · PDF
  • Installation manualLONGi PV modules · English · PDFLONGi PV modules, including LR8-66HGD-xxxM · English · PDF
  • Limited warranty — utility projectsHi-MO 7 modules · English · PDFLONGi high-efficiency bifacial dual-glass modules, including LR8-66HGD-xxxM · English · PDF
  • Limited warranty — distributed generationHi-MO 7 modules · English · PDFHi-MO 9, Hi-MO 7 and other modules for the distributed-generation market, including LR8-66HGD-xxxM · English · PDF
  • CE declaration of conformityLONGi LR8-66 modules · English · PDFLONGi LR8-66 modules of type HGD, among others · English · PDF
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Request a quotation.Share your quantity and delivery destination. We reply with a quotation for LR8-66HGD-610M, not an order confirmation.

LR8-66HGD familyLR8-66HGD 595–625M family

  • LONGi LR8-66HGD-600M
    LONGiPV module

    600 W power class, bifacial dual-glass module.

    Rated power
    600 W
    Module efficiency
    22.2 %
  • LONGi LR8-66HGD-605M
    LONGiPV module

    605 W power class, bifacial dual-glass module.

    Rated power
    605 W
    Module efficiency
    22.4 %
  • LONGi LR8-66HGD-615M
    LONGiPV module

    615 W power class, bifacial dual-glass module.

    Rated power
    615 W
    Module efficiency
    22.8 %

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