Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
0.6/1kV Flame Retardant PVC Insulated Wire for Grounding (GV, TFR-GV)
Conductor: Annealed copper, 7-strand (≤10mm²) / Compact Circular C.C (≥16mm²)
Insulation: Flame retardant PVC, GV (standard) / TFR-GV (enhanced tray rated)
Colour: Solid green — KS C IEC 60445 Korean grounding standard
Range: 1.5-630mm², 20 sizes, 65-6,740 kg/km
Length: 300m (≤150mm²), 200m (185-300mm²), 150m (400-630mm²)
Standard: KS C IEC 60502, IEC 60332-3 Cat. A (TFR-GV)
Product Overview
0.6/1kV Flame Retardant PVC Insulated Wire for Grounding — GV & TFR-GV is a single-core copper conductor grounding cable manufactured to the Korean national standard KS C IEC 60502 (the Korean adoption of IEC 60502). Available in two flame-retardant PVC insulation grades: GV (standard flame retardant PVC grounding wire) and TFR-GV (Tray Frame-Retardant PVC — enhanced flame retardancy for cable tray and grouped installations). The green insulation colour is the Korean standard identification for grounding/earth conductors — green alone, not the green/yellow stripe common in IEC markets. Conductors range from 1.5mm² to 630mm² with 7-strand construction for smaller sizes (≤10mm²) transitioning to compact circular (C.C) compressed stranded construction for larger sizes (16-630mm²), providing reduced overall diameter for equivalent copper cross-section. The 0.6/1kV voltage rating is a full class above the more common 450/750V building wire earth conductors — GV/TFR-GV is qualified for direct use in LV power distribution grounding circuits up to the transformer neutral earthing point.
Unlike European harmonised earth wires (H07V-U/K green/yellow, 450/750V) which are restricted to protected installations, GV/TFR-GV with its 0.6/1kV rating and enhanced flame retardancy is designed for installation in cable trays, conduits, and direct clipping in industrial and commercial electrical rooms where grouped cable fire propagation is a regulatory concern. The TFR-GV variant's "Frame-Retardant" designation indicates testing per IEC 60332-3 (Category A, bunched cable vertical flame spread test) — a more severe fire test than the single-cable IEC 60332-1 applied to standard building wires. The 3500V/5min test voltage is 75% higher than the 2000V test used for 450/750V house wire — appropriate for the higher system voltage where insulation integrity is safety-critical for earth fault current paths. Standard reel lengths are 300m per roll (<15mm²), 200m (185-300mm²), and 150m (400-630mm²) — packaged in export wooden cases on pallets.
Conductor — 7-strand orange copper, Class 2 stranded concentric lay
Insulation — Green flame retardant PVC, uniform wall thickness per size (2.2-5.0mm)
Colour Code — Solid green = Korean standard grounding conductor identification (KS C IEC 60445)
Copper Class 2 + Compact Circular
7-strand for 1.5-10mm². Compact circular (C.C) compressed for 16-630mm² — reduced OD at same copper CSA vs standard stranded.
Flame Retardant PVC — GV & TFR-GV
GV = standard FR-PVC grounding. TFR-GV = enhanced Tray Frame-Retardant for bunched cable tray installations per IEC 60332-3 Cat. A.
0.6/1kV Rating
Full LV power class — usable up to transformer neutral earthing. One voltage class above 450/750V building wire earth conductors. 3500V/5min test.
Solid Green Insulation
Korean standard grounding identification — green alone (not green/yellow stripe per IEC). KS C IEC 60445 compliant for Korean electrical code.
20 Sizes to 630mm²
1.5-630mm² full range. 300m rolls (≤150mm²), 200m (185-300mm²), 150m (400-630mm²). Export wooden case & pallet.
KS C IEC 60502 Certified
Korean national adoption of IEC 60502. Required for all electrical installations in South Korea. Better flame resistance than standard PVC.
Technical Characteristics
| Rated Voltage | 600/1000V (0.6/1kV) |
| Test Voltage | 3,500V / 5 minutes |
| Conductor Material | Annealed copper — solid, circular, or compact circular (C.C) |
| Insulation | Flame retardant PVC — GV (standard) or TFR-GV (enhanced tray rated) |
| Insulation Colour | Green — KS C IEC 60445 grounding conductor identification |
| Flame Performance | Improved over standard PVC — TFR-GV rated for IEC 60332-3 Category A (bunched cable) |
| Standard Lengths | 300m (≤150mm²), 200m (185-300mm²), 150m (400-630mm²) |
| Standard | KS C IEC 60502 (Korean adoption of IEC 60502) |
Applicable Standards
| Standard | Scope |
|---|---|
| KS C IEC 60502 | Korean national standard — adoption of IEC 60502 for power cables with extruded insulation rated 1-30kV. Primary standard for GV and TFR-GV grounding cables. |
| KS C IEC 60445 | Korean standard for identification of conductors by colours — specifies solid green for protective earth (PE) conductor. Different from IEC green/yellow stripe. |
| IEC 60332-3 Cat. A | Bunched cable vertical flame spread test — TFR-GV rated for grouped installation in cable trays. More severe than single-cable IEC 60332-1 used for building wire. |
Global Grounding Wire Comparison
| Designation | Standard | Voltage | Insulation Colour | Region |
|---|---|---|---|---|
| GV / TFR-GV | KS C IEC 60502 | 0.6/1kV | Green (solid) | South Korea |
| H07V-U / H07V-K G/Y | EN 50525-2-31 | 450/750V | Green/Yellow (stripe) | EU / CENELEC |
| BV / BVR G/Y | GB/T 5023 | 450/750V | Green/Yellow (stripe) | China |
| THHN/THWN Green | UL 83 | 600V | Green (solid) | USA / Canada |
Technical Specifications
Annealed copper conductor per KS C IEC 60502. 7-strand concentric lay for ≤10mm², compact circular (C.C) compressed for ≥16mm² — C.C compression reduces overall diameter vs standard stranded at the same copper cross-section. Flame retardant PVC insulation, green. DC resistance at 20°C per KS C IEC 60228 copper maximums. All sizes single core, 20 variants.
| Cross Section (mm²) | Conductor (No. × mm) | Conductor OD (mm) | Insulation (mm) | Overall OD (mm) | 20°C Res. (Ω/km) | Weight (kg/km) | Length (m) |
|---|---|---|---|---|---|---|---|
| 1.5 | 7 × 0.53 | 1.59 | 2.2 | 6.5 | 12.1 | 65 | 300 |
| 2.5 | 7 × 0.67 | 2.01 | 2.2 | 7.0 | 7.41 | 80 | 300 |
| 4 | 7 × 0.85 | 2.55 | 2.4 | 8.0 | 4.61 | 105 | 300 |
| 6 | 7 × 1.04 | 3.12 | 2.4 | 8.5 | 3.08 | 135 | 300 |
| 10 | 7 × 1.35 | 4.5 | 2.4 | 9.5 | 1.83 | 185 | 300 |
| 16 | C.C | 4.7 | 2.4 | 10.0 | 1.15 | 240 | 300 |
| 25 | C.C | 5.9 | 2.6 | 12.0 | 0.727 | 350 | 300 |
| 35 | C.C | 6.9 | 2.6 | 13.0 | 0.524 | 440 | 300 |
| 50 | C.C | 8.1 | 2.8 | 14.5 | 0.387 | 615 | 300 |
| 70 | C.C | 9.8 | 2.8 | 16.0 | 0.268 | 800 | 300 |
| 95 | C.C | 11.4 | 3.1 | 18.5 | 0.193 | 1,080 | 300 |
| 120 | C.C | 12.9 | 3.1 | 20.0 | 0.153 | 1,330 | 300 |
| 150 | C.C | 14.4 | 3.4 | 22.0 | 0.124 | 1,640 | 300 |
| 185 | C.C | 15.9 | 3.7 | 25.0 | 0.0991 | 2,040 | 200 |
| 240 | C.C | 18.3 | 4.0 | 28.0 | 0.0754 | 2,595 | 200 |
| 300 | C.C | 20.5 | 4.3 | 30.0 | 0.0601 | 3,235 | 200 |
| 400 | C.C | 23.2 | 4.6 | 34.0 | 0.0470 | 4,200 | 150 |
| 500 | C.C | 26.4 | 4.9 | 38.0 | 0.0366 | 5,060 | 150 |
| 630 | C.C | 30.2 | 5.0 | 42.0 | 0.0283 | 6,740 | 150 |
Packaging & Delivery
| Parameter | Standard |
|---|---|
| Package | 300m/roll (≤150mm²), 200m/roll (185-300mm²), 150m/roll (400-630mm²), export wooden case & pallet |
| Roll Marking | Manufacturer, GV/TFR-GV, 0.6/1kV, cross-section, length, weight, batch, KS mark |
| Colour | Green (solid) — KS C IEC 60445 grounding conductor identification |
| Outer Protection | Wooden case — standardised for Korean export cables; heavy-gauge (≥400mm²) on reinforced wooden drums |
| Delivery Condition | Factory-new, tested per KS C IEC 60502, KS mark certified, test certificate on request |
Typical Applications
GV and TFR-GV grounding wires are the standard protective earth conductors in Korean industrial and commercial electrical installations — from appliance earthing up to transformer neutral grounding in 0.6/1kV systems:
Equipment & Appliance Grounding
Standard green grounding wire for electrical appliances and equipment in Korean commercial and industrial installations per KS C IEC 60364.
Cable Tray Grounding (TFR-GV)
Tray Frame-Retardant type specifically for grouped installations in cable trays — IEC 60332-3 Cat. A certified for bunched cable fire safety.
Distribution Board Earthing
Main earth busbar to earth electrode connections. 0.6/1kV rating enables use up to transformer neutral — one class above 450/750V building wire.
Industrial Plant Grounding Grid
Heavy gauge (185-630mm²) for ground grid connections in substations, factories, and power plants — compact circular reduces OD for easier installation.
Korean Market
KS C IEC 60502 certified — mandatory for all electrical installations in South Korea. Solid green insulation = Korean standard grounding colour.
Enhanced Fire Safety
TFR-GV variant with improved flame resistance over standard PVC — critical for grouped cable installations where fire propagation between cables is a regulatory concern.
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Frequently Asked Questions
As a factory, we offer flexible MOQ depending on the cable type. For standard stock items, MOQ is low; for customized specifications, please contact our sales team for a detailed quote.
Yes, Qiangli cables are manufactured in compliance with international standards such as UL, CE, TUV, and VDE. We provide full test reports and certificates upon request.
Absolutely. We have a dedicated R&D team that can customize cable structure, material, color, and printing to meet your specific project needs.
For standard products, lead time is usually 7-15 days. For large-scale project orders or customized products, it typically ranges from 20 to 30 days.
Yes, we provide free samples for most standard cables. You only need to cover the international courier costs. Contact us to arrange your sample shipment.