Direct answer: Yes, armored solar cables exist — but about 90% of the regular solar DC cables on the market (H1Z2Z2-K, PV1-F) are unarmored. They use a single-core "conductor + XLPO insulation + XLPO sheath" build with no metallic armor, relying on the sheath for mechanical protection in trays, conduits and roof-mount runs. True armored versions (SWA/STA) are for direct burial, rodent protection and heavy-load areas, while the armored cable most people also see on site — YJV22 — is an AC armored power cable for the inverter-to-transformer collection circuit, not a DC solar cable.
Further reading: H1Z2Z2-K / EN 50618 Solar Cable Guide · XLPE vs XLPO Insulation Guide · CPR Dca Fire Performance Explained
1. How to Tell the Two Products Apart
1. Standard solar single-core cable (H1Z2Z2-K / PV1-F) — unarmored
Construction: conductor + XLPO insulation + XLPO sheath, with no metallic armor layer.
- Used for: DC runs from PV modules to the inverter, in cable trays, conduits or behind the module backsheet — environments that are relatively benign, free from sharp stones, animal gnawing and heavy compression.
- This is the DC solar wire used in ~90% of solar projects: flexible, light, low-cost and easy to route on roofs and mounting structures.
2. Armored solar cable (steel-tape armor SWA / steel-wire armor STA)
Construction: conductor + insulation + inner bedding + metallic armor + outer sheath.
- SWA (steel-tape armor): for direct burial, resisting compression and stone punctures;
- STA (steel-wire armor): for submerged runs, shafts and applications needing high tensile strength.
- Used for: DC solar lines directly buried without conduit protection; rodent protection in farms/pastures; heavy rolling-load ground areas.
- Examples: H1Z2Z2-K SWA, PV1-F armored version.
At a glance
| Dimension | Unarmored solar cable (H1Z2Z2-K / PV1-F) | Armored solar cable (SWA / STA) |
|---|---|---|
| Construction | Conductor + XLPO insulation + XLPO sheath | Conductor + insulation + bedding + metallic armor + sheath |
| Mechanical protection | Sheath only, light abrasion | Crush / puncture / rodent / rolling-load resistant |
| Typical installation | Trays, conduits, roof racking | Direct burial, subsea, shafts, heavy-load ground |
| Diameter & weight | Small, light | Noticeably larger and heavier |
| Cost | Baseline | Significantly higher |
| Project share | ~90% | Supplementary, special cases |
2. Key Business Points: High-Frequency Inquiry Questions
1. Armor = bigger diameter, more weight, higher cost
The armor is real metal (steel tape or wire). Adding it makes the cable larger in diameter, heavier and clearly more expensive. Quote the armored version separately — never apply the unarmored unit price to it.
2. Armor protects mechanically only — it does NOT improve UV or temperature rating
This is the biggest misconception. Armor is mechanical protection only; it does not raise UV resistance or temperature rating. The outer sheath of an armored solar cable still must be UV-resistant (usually still XLPO), otherwise the buried/exposed sheath will still age. The temperature class is still set by the insulation (XLPO ~120°C rating).
3. Don't mistake an "AC armored cable" for a "DC solar cable"
Many buyers confuse them: the AC collection cable YJV22 (armored XLPE/PVC power cable) on site is an AC power cable for the inverter-to-transformer AC circuit — not a DC solar cable. The DC side uses H1Z2Z2-K / PV1-F; the AC side uses YJV22-type armored power cables. Different standards, voltage classes and constructions — always confirm DC vs AC side before quoting.
3. Selection Checklist (ready to use)
| Your scenario | Recommendation |
|---|---|
| Module → inverter DC line, in trays/conduits/roof | Unarmored H1Z2Z2-K / PV1-F (~90% of cases) |
| DC line needs direct burial, no conduit | H1Z2Z2-K SWA armored version |
| Farms, orchards — rodent risk | STA steel-wire armor (anti-gnawing) |
| Heavy rolling load, vehicle traffic areas | SWA steel-tape armor |
| Inverter → transformer AC collection | YJV22 armored AC power cable (not DC solar cable) |
| Subsea, shafts, high tensile runs | STA steel-wire armor |
4. Common Misconceptions
Misconception 1: All solar cables are armored Wrong. Standard H1Z2Z2-K / PV1-F are unarmored single-core cables; armor is an option for special scenarios, not standard fitment.
Misconception 2: Armored means more UV- and heat-resistant Wrong. Armor provides no UV or temperature protection; the sheath's weather resistance is what matters, and armored versions still use UV-resistant XLPO sheaths.
Misconception 3: YJV22 is the armored solar cable Wrong. YJV22 is an AC armored power cable carrying the AC circuit downstream of the inverter, not the DC solar wire on the module side.
Misconception 4: Armored versions can be buried bare, no care needed Armor guards against mechanical damage, but direct burial still requires a UV- and corrosion-resistant sheath and consideration of groundwater and chemical exposure; add conduit or use a dedicated burial-grade sheath where needed.
FAQ
Q1: Is the H1Z2Z2-K solar DC cable armored? A: The standard H1Z2Z2-K (EN 50618) is unarmored — a single-core conductor + XLPO insulation + XLPO sheath, for trays, conduits and roof runs. For direct burial or rodent protection, an H1Z2Z2-K SWA/STA armored version can be specified.
Q2: When does a solar cable actually need armor? A: Three cases — ① DC lines directly buried without conduit; ② rodent/animal gnawing risk (farms, orchards); ③ heavy rolling load or vehicle-traffic ground areas. Ordinary roof and tray installations do not need armor.
Q3: How much more does armored solar cable cost? A: The armor is metal (tape or wire), significantly increasing diameter, weight and material cost — typically well above the same-size unarmored cable (varies with cross-section and armor type). Always quote armored and unarmored separately.
Q4: Does armor improve a solar cable's UV and temperature resistance? A: No. Armor only adds mechanical protection (crush, puncture, rodent). It does not change the insulation's temperature class nor replace the sheath's UV function. The armored version's sheath must still be UV-resistant XLPO.
Q5: What is the difference between YJV22 and the armored H1Z2Z2-K? A: Both are armored but serve different sides. YJV22 is an AC armored power cable for the inverter-to-transformer AC collection circuit (higher voltage, often multi-core); the armored H1Z2Z2-K is a DC solar cable variant for the module-side DC circuit. Confirm DC vs AC side first, then pick the matching type.
Need a datasheet or volume quote for DC solar cables (H1Z2Z2-K / PV1-F, with SWA/STA armor on request) or AC armored collection cables (YJV22)? Chat with the engineer directly on WhatsApp → WhatsApp Inquiry
