Direct answer: TFR-CV is the Korean-standard "Tray Flame Retardant CV" power cable; 6sq means 6 mm² conductor cross-section. It is rated 0.6/1 kV AC (low voltage) and built to KS C IEC 60502-1, requiring KS (KC) certification for the Korean project market. It is an AC-side power cable — completely different from the KS C IEC 62930 PV DC solar cable — so the two must be kept separate when quoting.
Further reading: KS C IEC 62930 Korean PV DC Cable Standard · H1Z2Z2-K / EN 50618 Solar Cable Guide · Cable Export Certifications Hub · Cable Manufacturer Directory
What Is TFR-CV 6sq
TFR-CV is the Korean standard Tray Flame Retardant CV power cable for cable-tray installation; 6sq = 6 mm² conductor cross-section.
- Base CV model = XLPE insulated, PVC sheathed power cable; TFR = Tray Flame Retardant, a version that meets the flame-retardant requirement of cable-tray wiring.
- Voltage rating: 0.6/1 kV AC (low voltage — NOT the PV DC 1500 V solar cable! Key distinction)
- Standard: KS C IEC 60502-1 (Korea's identical adoption of IEC 60502-1); KS (KC) certification is required to enter the Korean engineering market.
Cable Construction
- Conductor: Annealed copper, Class 2 compacted circular stranded conductor (not the Class 5 flexible conductor used in PV cables)
- Insulation: XLPE (cross-linked polyethylene), long-term permissible 90 °C
- Sheath: Flame-retardant PVC (FR-PVC) black outer sheath
- Cores: Available in 1C / 2C / 3C / 4C; TFR-CV 6sq can be single-core 1×6 mm² or multi-core
Core Applications
Low-voltage AC power distribution in Korean buildings, factories and the AC side of PV systems, laid on cable trays — flame retardancy for tray routing is the core selling point.
⚠️ Important business distinction: TFR-CV ≠ KS C IEC 62930 PV DC cable
- TFR-CV: 0.6/1 kV AC, XLPE + PVC sheath, tray flame retardant — used for the AC output after the inverter
- KS C IEC 62930 PV cable: DC 1500 V, XLPO/XLPE + LSZH sheath, UV-resistant for outdoor, PV module DC side
Color Code (Korean Projects)
- Single core: black
- 2 core: black, white
- 3 core: black, white, red
- 4 core: black, white, red, green (earth)
Business Notes
- Printing example:
TFR-CV 0.6/1kV 1×6mm² KS C IEC 60502-1 Cu XLPE FR-PVC - Installation: Cable tray, conduit, indoor buried; not recommended for long-term outdoor exposure (PVC sheath is not UV-resistant)
- Related model: TFR-CVV (multi-core sheathed control cable) — do not confuse the two
Ready-to-Send English Reply (for inquiries)
TFR-CV 6sq is Korean Tray Flame Retardant CV power cable, 6mm² cross-section, rated 0.6/1kV AC. Standard: KS C IEC 60502-1. Construction: Copper conductor, XLPE insulation, flame retardant PVC sheath. It is used for AC power distribution on cable tray, building & solar inverter AC output side. Important: This is AC low voltage power cable, NOT PV DC 1500V solar cable.
FAQ
Q1: What is the difference between TFR-CV and a normal CV cable? A: CV is the general Korean XLPE-insulated, PVC-sheathed power cable. TFR is the Tray Flame Retardant version — flame retardant is added to the PVC sheath to meet the fire-performance requirement of cable-tray wiring. The constructions are similar; the difference is the sheath flame-retardant grade and the permitted installation method.
Q2: Is TFR-CV 6sq a solar / PV cable? A: No. TFR-CV is a 0.6/1 kV AC low-voltage power cable used for the AC side after the inverter. The PV DC side uses the KS C IEC 62930 (DC 1500 V) solar cable. They differ completely in voltage rating, insulation/sheath system and application — never mix them up when quoting or selecting.
Q3: What certification does TFR-CV need for the Korean market? A: KS certification to KS C IEC 60502-1 (marked as KC) is the normal requirement for acceptance in Korean construction and engineering projects. Confirm with the EPC or owner whether KS (KC) certification is mandatory before supply, and allow lead time for certification.
Q4: What cores and colors are common for TFR-CV 6sq? A: Cores are selected by the distribution design — 1C / 2C / 3C / 4C. Colors follow Korean practice: single core black; 2 core black + white; 3 core black + white + red; 4 core black + white + red + green (earth). Confirm the exact color rule with the EPC specification before ordering.
Q5: Is TFR-CVV the same as TFR-CV? A: No. TFR-CV is a power cable (e.g. 1×6 mm² single core); TFR-CVV is a multi-core overall-sheathed control cable with smaller conductors for control signal circuits. The names look alike but the uses differ — keep the model numbers separate on the order to avoid shipping the wrong product.
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