RVV-4*0.75mm² Premium RVV 4 Core Control Cable Stranded Copper Conductor PVC Insulated,Outer Sheathed

RVV 4×0.75 mm² Copper Conductor PVC Insulated & Sheathed Flexible Cord

Type:​ 60227 IEC 53 (RVV) · Voltage:​ 300/500 V · Standard:​ GB/T 5023.5-2008 / IEC 60227-5:2003 · Certification:​ CCC · Origin:​ Anhui, China

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1. Electrical & Structural Parameters

2. Current-Carrying Capacity Reference

* Reference values for PVC-insulated copper conductor at 70 °C temp. class; actual ampacity must be corrected for ambient temperature, grouping/bundling, conduit fill, and local wiring regulations. Do not​ use the uncorrected free-air value for enclosed/conduit installations.

Derived electrical reference (4×0.75 mm², 25 m four-wire run — 3-phase 400 V or 2-phase+PE 220 V)

3. Product Performance Introduction

The RVV 4×0.75 mm²​ is a compact 4-core flexible cord engineered for three-phase distribution, dual-circuit control, and multi-signal transmission​ within a single sheathed assembly. It houses four Class 5 fine-strand annealed copper conductors​ (24/0.20 mm each), each individually insulated in PVC/D compound (0.6 mm)​ and collectively enclosed in a PVC/ST5 outer sheath (0.9 mm). The 4-core bundled layup produces a round cross-section of approximately 7.6–9.4 mm​ overall diameter, balancing flexibility with the mechanical robustness needed for multi-conductor routing .

4-core architecture advantage.​ Unlike 2- or 3-core versions, the 4-core configuration supports 3-phase + PE​ distribution (Brown/Black/Grey + Green-Yellow per IEC 60446) or 2-phase + Neutral + PE​ (Brown/Black + Blue + Green-Yellow) in a single cable. This eliminates the need to run multiple 2-core cables in parallel, reducing conduit fill, installation time, and the risk of mismatched phase/earth pairings. The unified sheath also provides a cleaner aesthetic and better strain relief at entry points .

Electrical performance under 4-core loading.​ With a 2000 V AC / 5 min withstand​ proof test and ≥ 0.011 MΩ·km insulation resistance at 70 °C, the cable maintains dielectric isolation even when all four cores are simultaneously energized . The ≤ 26.0 Ω/km DC resistance​ per core ensures balanced voltage drop across all conductors: at the reference 7.5 A rating over a 25 m three-phase run, the line-to-line voltage drop is ~9.8 V (2.4% of 400 V) — well within the 3% statutory limit for distribution circuits . For single-phase use (L+N loop), the drop is ~9.8 V (4.4% of 220 V), also compliant with typical building wiring tolerances.

Thermal management in 4-core bundles.​ The addition of a fourth core increases mutual heating when all conductors carry current simultaneously. Reference free-air ampacity therefore steps down from ~9 A (3-core) to ~7.5 A (4-core)​ . The PVC/D + PVC/ST5 system remains stable at 70 °C continuous​ with a 150 °C short-circuit withstand (5 s max), making it suitable for indoor distribution where ambient rarely exceeds 40 °C. The outer sheath thickness increases to 0.9 mm​ (vs. 0.8 mm for 2/3-core) to maintain crush resistance despite the larger core bundle .

Mechanical & safety profile.​ The fine-strand construction allows the 4-core cable to be pulled through conduit and dressed into panels while maintaining a minimum bend radius of 4× overall diameter (~30–38 mm)​ . The 0.9 mm sheath provides enhanced abrasion resistance during installation pulls and protects against minor crushing in trunking. Flame retardancy per GB/T 18380.12 (IEC 60332-1)​ ensures self-extinguishing behavior, limiting fire propagation along the cable route . Pre- and post-aging PVC properties (tensile ≥10.0 N/mm², elongation ≥150%, change within ±20% after 168 h at 80 °C) confirm the sheath will not embrittle over decades of service .

Installation efficiency.​ Running a single 4-core cable instead of two 2-core cables reduces the number of terminations, eliminates conductor-cross-talk from parallel runs, and simplifies circuit identification through consistent color coding. For projects requiring custom core identification, the manufacturer supports non-standard color combinations without affecting electrical certification.

4. Specification Range

5. Applications & Scope of Use

Primary applications

• Small 3-phase distribution:​ 3-phase motors ≤ 1.5 kW (fans, pumps, compressors), 3-phase LED drivers, 3-phase inverter feeds.

• Dual-circuit power:​ Two independent single-phase loads powered from one sheath (e.g., left/right lighting banks, paired socket groups).

• Building automation multi-drop:​ HVAC damper actuators, VAV boxes, fan coil units with 3-speed + earth control.

• Security & access (multi-device):​ Electric strike + magnetic lock + request-to-exit sensor + common earth on one 4-core run.

• CCTV + power combo:​ Camera video/power + heater + earth in a single cable (where separate data cable is not required).

• Control panels:​ 3-phase contactor coils, thermal overloads, pilot lights, and auxiliary contacts — all wired from one 4-core entry.

• Stage & event lighting:​ 3-phase dimmer pack feeds, truss-mounted fixture groups (low-power).

• OEM equipment:​ 3-phase internal distribution within machinery, robotic cells, conveyor systems.

• Smart building:​ KNX/DALI power + data combos, multi-button switch panels with common return.

Typical projects:​ small commercial 3-phase fit-outs · residential with 3-phase service · light industrial automation · HVAC installations · security system multi-device wiring · stage/event production · OEM machinery manufacturing.

Use limitations:​ not for direct burial · not for prolonged outdoor UV exposure · not for fire-rated emergency circuits (use NH-RVV or WDZ-RVV for fire-resistant / LSZH) · not for high-power 3-phase loads >5 kW on a single run (upsize to 1.0 / 1.5 / 2.5 mm²).

6. Installation & Handling

7. Selection Guide (RVV 4-core family & alternatives)

8. Quality Assurance

Every production batch is inspected per GB/T 5023.5-2008 / IEC 60227-5, covering: conductor resistance (4-wire Kelvin, all 4 cores), strand count & lay length, insulation & sheath thickness / concentricity, high-voltage spark or immersion test (2000 V AC, 100% length), flame-retardancy sampling (GB/T 18380.12), PVC tensile/elongation and aging verification (80±2 °C × 168 h), plus dimensional and visual inspection including core color verification. Certificate of Compliance (CoC)​ and test reports are available on request, referenced to batch number and manufacturing date.