Product Overview & System Integration
Engineered for utility-scale and commercial EPC projects, this BC (Back Contact) dual glass solar panel eliminates front busbars, maximizing the active light absorption area. The symmetrical dual-glass architecture provides extreme mechanical stability against micro-cracking, PID (Potential Induced Degradation), and salt mist corrosion. The modules function perfectly with mainstream string inverters (1000V/1500V DC systems) and high-power micro-inverters. As a direct China manufacturer, we support OEM dimension modifications, customized frame finishes (black/silver AL6005-T5), and precise pre-drilled mounting holes for integration with specific single-axis tracker systems or standard roof brackets.

Material & Technical Specifications
| Battery Cell Type |
GBC |
| Battery arrangement |
156(6*26) |
| Glass |
Dual glass, 2.0+2.0mm coated semi tempered glass |
| Frame |
Anodized aluminum alloy frame |
| Output wires |
Customized Length |
| Weight |
34.5kg (76.06lbs) |
| Size |
2465*1134*30mm |
| Packing |
36 pcs per pallet
|
| Safety Protection Rating |
Class Ⅱ |
| Fire Rating | IEC Class C |
Quality Control & Global Standards
Our manufacturing facility strictly executes ISO 9001:2015 quality management protocols. Every BC dual glass solar module undergoes dual 100% EL (Electroluminescence) testing-initially before lamination and finally post-framing-to absolutely verify the absence of hidden micro-cracks. Modules are certified by TUV Rheinland, CE, and RoHS. Batch samples pass rigorous mechanical load validations, damp heat environmental tests (85°C/85% RH), and severe salt mist and ammonia corrosion resistance tests (IEC 61701 / IEC 62716), guaranteeing stable yield in harsh climatic conditions.



Product Details
BC Dual Glass Solar Panel Assembly Drawing Engineering Drawings (Unit: mm)
*Length: ±2mm Width: ±2mm

Electrical Performance Parameters (Under Standard Test Conditions)
|
Model |
GK-1-78HGBD-655M |
GK-1-78HGBD-660M |
GK-1-78HGBD-665M |
GK-1-78HGBD-670M |
GK-1-78HGBD-675M |
GK-1-78HGBD-680M |
GK-1-78HGBD-685M |
||||||||
|
Test Conditions |
STC |
NOCT |
STC |
NOCT |
STC |
NOCT |
STC |
NOCT |
STC |
NOCT |
STC |
NOCT |
STC |
NOCT |
|
|
Maximum Power (Pmax/W) |
655 |
493 |
660 |
497 |
665 |
501 |
670 |
505 |
675 |
508 |
680 |
512 |
685 |
516 |
|
|
Open-Circuit Voltage (Voc/V) |
58.74 |
55.47 |
58.80 |
55.53 |
58.86 |
55.58 |
58.92 |
55.64 |
58.98 |
55.70 |
59.04 |
55.75 |
59.10 |
55.81 |
|
|
Peak Power Voltage (Vmp/V) |
48.61 |
45.91 |
48.67 |
45.97 |
48.73 |
46.02 |
48.79 |
46.08 |
48.85 |
46.14 |
48.91 |
46.19 |
48.97 |
46.20 |
|
|
Short-Circuit Current (Isc/A) |
14.21 |
11.49 |
14.28 |
11.55 |
14.35 |
11.61 |
14.42 |
11.66 |
14.49 |
11.72 |
14.56 |
11.78 |
14.63 |
11.84 |
|
|
Peak Power Current (Imp/A) |
13.48 |
10.76 |
13.57 |
10.82 |
13.65 |
10.89 |
13.74 |
10.96 |
13.82 |
11.03 |
13.91 |
11.10 |
13.99 |
11.17 |
|
|
Module Conversion Efficiency(%) |
23.4 |
23.6 |
23.8 |
24.0 |
24.1 |
24.3 |
24. |
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|
|
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1. STC (Standard Test Conditions): Irradiance 1000 W/m², cell temperature 25°C, spectral distribution AM1.5
2. NOCT (Nominal Operating Cell Temperature): Irradiance 800 W/m², ambient temperature 20°C, spectral distribution AM1.5, wind speed 1 m/s
Load Capacity
| Maximum Static Load (Front) | 5400Pa |
| Maximum Static Load (Back) | 2400Pa |
| Hail Test Passed | Diameter 25mm, Impact Speed 23m/s |
Packaging & Logistics Safety
We implement robust, export-grade packaging engineered for international ocean freight. Modules are packed vertically in portrait orientation inside reinforced double-corrugated cartons, secured on fumigated wooden pallets. Each pallet is wrapped with multi-layer heavy-duty shrink film and reinforced with industrial steel banding. Corner protectors and spacer blocks are inserted between modules to prevent friction and glass breakage during transit. Container loading is mathematically optimized to maximize space utilization while adhering to strict weight distribution limits, securing your bulk order from our factory floor to the project site.
Delivery time
|
Quantity (units) |
1-20000 |
>20000 |
|
Lead time (days) |
15 |
Negotiable |
Delivery Schedule: For orders under 20,000 pieces, the standard lead time is 15 days. For quantities exceeding this, we will coordinate to accommodate your needs.
Typical Application Scenarios
The structural integrity and exceptionally high power density of BC dual glass solar panels make them highly viable for restricted installation spaces and harsh environments. They are deployed heavily in utility-scale ground-mounted solar plants utilizing single-axis trackers to capture maximum bifacial albedo gain. They function as a primary component in commercial rooftop EPC installations requiring high wattage per square meter. Furthermore, the dual-glass moisture barrier is engineered specifically for Agrivoltaics (agricultural greenhouses) and coastal floating solar arrays requiring extreme humidity defense.

FAQ
How does the BC dual glass solar panel sync with 1500V utility-scale string inverters?
It features a robust 1500V DC maximum system voltage rating, allowing extended string configurations. This hardware compatibility directly reduces combiner box and DC cable costs per megawatt, connecting efficiently with major tier-1 high-voltage commercial string inverters without additional step-down equipment.
What guarantees the <0.4% linear power degradation over the 30-year lifecycle?
The elimination of front grid lines lowers internal mechanical stress on the cells, while the 2.0mm+2.0mm dual-glass encapsulation completely blocks moisture ingress and prevents PID. The factory provides a solid 15-year material warranty and a 30-year power output guarantee.
Can the supplier customize the frame and junction box cables for wholesale OEM orders?
Yes, our factory executes strict OEM specifications for volume buyers. We modify aluminum frame finishes to full black or silver, alter PV cable lengths to match specific tracker mounting spacing, and engrave precise laser logos. OEM prototype turnaround is normally executed within 15 working days.
Call to Action
Request a precise system wiring diagram and wholesale project quote within 24 hours. Batch OEM samples available for factory quality testing. Contact our engineering team to lock in your B2B supply contract.
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