When designing or procuring components for photovoltaic (PV) systems, engineers and contractors need cabling and protection devices that withstand harsh outdoor conditions and meet international standards. The Singi PV Series Products from Singi-cable offer a comprehensive range of solar cables, connectors, and PV-specific components engineered for long-term performance. This guide explains what these products are, why they matter, how to choose them, and which standards they comply with.
The Singi PV Series is a dedicated product line from Singi-cable, a manufacturer with extensive experience in low-voltage cables and components. This series includes PV1-F solar cables, DC-rated connectors, and system accessories such as branch connectors and fuse holders. These components are designed for the DC side of photovoltaic installations — from solar panels to inverters — and are optimized for continuous outdoor exposure, high UV radiation, and temperature extremes. The Singi PV Series covers cable cross-sections from 1.5 mm² to 10 mm² (or larger upon request) and supports system voltages up to 1.5 kV DC, meeting the requirements of modern solar plants.
Standard AC cables or general-purpose wires are not suitable for PV installations. According to IEC 60364-7-712, solar PV power supply systems demand cables that can handle DC voltage without insulation breakdown, resist moisture and ozone, and maintain flexibility at low temperatures. Additionally, DC arcs are harder to extinguish than AC arcs, so connectors and fuses must have proper DC ratings. The Singi PV Series addresses these challenges by using cross-linked polyethylene (XLPE) or halogen-free flame-retardant compounds, along with tinned copper strands for corrosion resistance. These features directly reduce the risk of ground faults, short circuits, and fire hazards — common concerns for system owners and insurers.
Note: IEC 60364-7-712:2017 specifically requires that PV cables be rated for at least 90°C conductor temperature and be UV-resistant. The Singi PV Series cables meet or exceed these criteria.
Reliability in PV systems depends on three factors: material quality, manufacturing consistency, and compliance with aging tests. Singi PV Series cables undergo a 1000-hour damp heat test, UV weathering test (according to EN 50618 or TÜV 2PfG 1169), and thermal endurance assessment. The connectors are tested for insertion/withdrawal cycles and waterproof rating (IP67 or IP68). Furthermore, the double-insulated design of PV1-F cables provides an extra layer of safety against mechanical damage. Singi-cable's quality management system is ISO 9001 certified, ensuring batch-to-batch consistency. For engineers specifying long-term warranties (e.g., 25 years), these validation results are critical.
The Singi PV Series holds multiple international approvals. Key references include:
These standards cover conductor resistance, insulation thickness, voltage withstand, and fire performance. Singi-cable also provides test reports and certificates upon request, enabling buyers to demonstrate compliance during project inspections.
Chooseion begins with system voltage and current. For a typical residential string inverter system (600–1000 V DC), PV1-F 4 mm² or 6 mm² cables are common. For utility-scale plants with 1500 V DC, choose cables with a rated voltage of 1.8 kV DC (like the Singi PV Series 1.8 kV variant). Next, consider environmental factors: if the installation is coastal or industrial, use tinned copper and high-corrosion-resistant connectors. For rooftop mounting, ensure the cable has double insulation and is resistant to sharp edges. Use the following comparison table as a guide:
| Parameter | Residential PV (≤10 kW) | Commercial PV (10 kW – 1 MW) | Utility-scale PV (>1 MW) |
|---|---|---|---|
| System voltage | 600–1000 V DC | 1000 V DC | 1500 V DC |
| Recommended cable size | 4 mm² – 6 mm² | 6 mm² – 10 mm² | 10 mm² – 16 mm² (or parallel runs) |
| Connector type | MC4 compatible | MC4 or larger | Custom heavy-duty |
| Key standard | EN 50618 / TÜV | EN 50618 / UL 4703 | IEC 62930 / UL 4703 |
Always verify the cable's temperature rating (90°C at conductor, 120°C at short circuit) and fire class (e.g., IEC 60332-1-2 for flame retardance). For fuse holders or combiner boxes within the PV array, ensure DC ratings match the string current and voltage.
No. Ordinary AC cables are not designed for continuous DC voltage stress and UV exposure. Using them can lead to insulation breakdown, increased leakage current, and safety hazards. Always choose cables specifically rated for photovoltaic applications, such as the Singi PV Series.
When installed correctly, Singi PV Series cables are designed to last 25 years or more in field conditions. This is supported by accelerated aging tests that simulate UV, temperature, and humidity cycles over the product's lifetime.
Yes. Singi-cable offers custom cutting, stripping, and connector crimping services for the Singi PV Series. Contact their sales team with your project specifications to request a quotation.
Singi PV Series connectors are designed to be compatible with industry-standard MC4 and MC4-evo interfaces. For other connector brands, verify the dimensional compatibility or request a sample for testing.
For engineers, contractors, and procurement professionals seeking reliable, standards-compliant components for solar PV systems, the Singi PV Series Products from Singi-cable deliver proven performance. With certifications to EN 50618, IEC 62930, and UL 4703, along with robust construction and long-term durability, these products simplify system design and reduce operational risks. To explore the full lineup and request technical datasheets, visit the official Singi PV Series product page.
Ready to source Singi PV Series products for your next solar project? Contact Singi-cable today for pricing and lead times.
![Singi Cable[Email: singi100@singi.com]](/u_file/2303/photo/11c1fa1eb8.jpg)
