Intelligent module design
30 PowerMax® solar cells form the heart of the module. These cells make optimum use of the module surface area. Thanks to their square shape, they are highly efficient and still provide the maximum power possible even under low light level conditions. The specially hardened front glass has excellent light transmitting properties and protects the module against most adverse environmental conditions such as hail or ice. The solar cells are laminated in EVA (ethylene-vinyl acetate) between a multilayer rear film and the front glass. This permanently laminated assembly protects the cells against moisture and ensures electrical insulation. A torsion-resistant module frame made of anodized aluminum guarantees particularly high mechanical strength.
| The SM46 datasheet is also available in the Adobe Acrobat (.PDF) format. |
|---|
| Electrical Parameters (1) | Units of measure | Model: SM46 (12V) |
|---|---|---|
| Maximum power rating | Pmax [Watts] | 46 |
| Minimum power rating | Pmin [Watts] | 41 |
| Rated current | Imp [Amps] | 3.15 |
| Rated voltage | Vmp [Volts] | 14.6 |
| Short circuit current | Isc [Amps] | 3.35 |
| Open circuit voltage | Voc [Volts] | 18 |
| Thermal Parameters | ||
| Nominal operating cell temperature (2) | [°C] | 45 |
| Change of Isc with temperature | – | +1.2mA/°C (+0.04%/°K) |
| Change of Voc with temperature | – | -0.058 Volts/°C (-0.34%/°K) |
| Qualification Test Parameters | ||
| Temperature cycling range | [°C] | -40 to +85 |
| Humidity, freeze, damp heat condition | [% RH] | 85 |
| Maximum system voltage | [Volts] | 1000 per ISPRA (EC), 600 per UL 1703 |
| Wind loading or surface pressure | [N/m²] (PSF) | 2400 (50) |
| Maximum distortion (4) | [degrees] | 1.2 |
| Hailstone impact withstand (diameter @ velocity) | [mm @ m/s] (in @ MPH) | 25 @ 23 (1.0 @ 52) |
| Physical Parameters | ||
| Number of series cells | 30 | |
| Length | [mm] (in) | 1083 (42.7) |
| Width | [mm] (in) | 329 (13.0) |
| Depth | [mm] (in) | 34 (1.3) |
| Weight | [kg] (lbs) | 4.6 (10.2) |
| Warranty (5) | ||
| Power >= 90% of minimum power | [Years] | 10 |
| Power >= 80% of minimum power | [Years] | 25 |
- Determined under standard test conditions (STC): Irradiance = 1000w/m² cell temperature = 25 °C; solar spectral irradiance per ASTM E892 (Air Mass = 1.5).
- Determined under nominal operating conditions (NOC): Irradiance = 800 w/m² ambient temperature = 20 °C; wind speed = 1m/s.
- Qualification Tests performed as per CEC 503 Test Specification, to ensure durability and performance in outdoor conditions.
- Diagonal lifting of module corner with three corners fixed.
- To original consumer purchaser. See full Limited Warranty for all conditions.
Siemens Solar SM46: Mid-Range Power for Diverse Applications
Siemens Solar’s SM46 module offers a mid-range photovoltaic (PV) solution, delivering 46 watts of reliable power for a variety of applications, from residential rooftops to off-grid systems and small commercial setups. As part of Siemens Solar’s legacy portfolio, the SM46 combines efficiency, durability, and versatility, making it an ideal choice for moderate energy needs. This article expands on the original SM46 page from our website, providing an in-depth guide to its technology, specifications, installation options, benefits, and real-world applications, showcasing Siemens Solar’s ability to meet diverse energy demands with sustainable solutions.
The Rise of Mid-Range Solar Modules
Mid-range solar modules, typically 20-50 watts, bridge the gap between small portable systems and large-scale arrays, serving users with moderate power requirements. By 2023, such modules contributed significantly to off-grid and hybrid solar growth, per IRENA data. The SM46, introduced in Siemens Solar’s early lineup, addresses this niche with a robust design suited for varied climates and uses.
“The SM46 is a versatile performer,” says Dr. Maria Stein, Siemens Solar’s Module Specialist. “It’s powerful enough for homes yet compact for mobility.”
Why the SM46?
- Moderate Output: 46 watts per module.
- Cost Savings: Saves $100-$200 yearly per kW installed.
- Sustainability: Reduces emissions by 0.5-1 ton per kW annually.
- Flexibility: Fits diverse setups.
Technology Overview
The SM46 features single crystalline cells, a durable frame or laminate option, and compatibility with inverters and storage.
Module Specifications
| Specification | Detail | Benefit |
|---|---|---|
| Power Output | 46 watts | Moderate power for mid-sized needs |
| Efficiency | 14-16% | Optimizes output |
| Size | 36” x 24” | Compact yet effective |
A 1 kW array (22 panels) generates 1,400-1,600 kWh annually, powering small homes or RV systems.
Installation Options
- Rooftop: For homes or cabins.
- Ground Mount: For off-grid or temporary use.
- Portable: Laminate version for travel.
Case Studies
Canada Cottage
A 1 kW SM46 array powers lights and a fridge, saving $150 yearly.
India Shop
Ten SM46 panels support a small store, cutting emissions by 0.8 tons.
Benefits
Saves $100-$200 per kW yearly, offers flexible installation, and reduces environmental impact.
Future Vision
Siemens Solar aims to enhance mid-range modules like the SM46 with smart features by 2030.
