RVVP 4x4.0mm² Shielded Control Cable for High Power Motor and Equipment Control

RVVP 4x4.0mm² Shielded Control Cable for High Power Motor and Equipment Control

Cable Designation & Meaning

Construction: Four 4.0 mm² fine-stranded copper conductors, PVC insulation on each core, laid up together, tinned copper braid shield (≥80% coverage) over the laid-up cores, PVC outer sheath.

Applicable Standards

• GB/T 5023.5-2008 / IEC 60227-5 — Polyvinyl chloride insulated cables — Flexible cables (cords)
• GB/T 3956-2008 / IEC 60228 — Conductors of insulated cables (Class 5 flexible)
• GB/T 18380.3 / IEC 60332-3 — Flame retardant (Category A/B/C as specified)
• GB/T 5023.2-2008 / IEC 60227-2 — Test methods

RVVP 4×4.0 mm² — Flexible Shielded Heavy Power+Control Cable — Specification 

1. Overview & Ratings

RVVP 4×4.0 is a 4-core shielded heavy power+control cable rated 300/500 V. It uses pure annealed bare copper (not tinned) for both the conductor and braid, maximizing conductivity. The four 4.0 mm² cores are laid up in a quad formation and handle motor power 3–5 kW, panel power supply, and power distribution with control. The braid suppresses EMI/RFI from nearby VFDs and motors. OD ≈ 15.5 mm, ≈ 245 kg/km (est.), ≈ 25–32 A. Max conductor temperature 70 °C, -15 to +70 °C. Intended for dry indoor heavy power and control circuits; for damp or outdoor duty, specify tinned copper variant.

2. Construction Stack (Inner → Outer, expanded)

3. Electrical Characteristics

DC resistance ≤ 4.61 Ω/km at 20 °C per GB/T 3956 Class 5 pure copper — roughly 38% lower than 2.5 mm², making it suitable for motor power 3–5 kW and panel power supply. Rated voltage 300/500 V. Estimated ampacity ≈ 25–32 A in free air at 30 °C. Insulation resistance ≥ 20 MΩ·km. Routine AC withstand test at 2000 V for 5 minutes. Typical capacitance ≈ 200 pF/m at 1 kHz. The pure copper braid provides ≈ 60–70 dB shielding at 30–1000 MHz. Voltage drop ≈ 1.15 V per 100 m at 25 A — suitable for motor power runs up to 50 m.

Insulation & Sheath Data

Electrical Parameters

Reference values: RVVP 4×4.0 at 25 A per core, 24 V DC → max load ≈ 600 W​ per core (low-power device supply). At 230 V AC → max load ≈ 5,750 VA​ per core (not recommended for power).

4. Thermal & Flame Behaviour

Operating range -15 to +70 °C continuous. Short-circuit withstand up to 160 °C for ≤ 5 seconds. PVC insulation and jacket are flame-retardant per IEC 60332-1. The cable is halogen-containing (PVC), emitting HCl gas on burning — avoid in enclosed switchrooms. For public or enclosed spaces, specify LSZH alternatives. The 1.2 mm Type ST jacket is oil- and abrasion-resistant for machine and panel wiring. Note: bare pure copper oxidizes in humid environments — install in dry indoor or conduit-protected locations. UV resistance is limited.

Temperature Characteristics

Fire Performance (RVVP — PVC, Non-Low-Smoke)

5. Installation Practice & Handling

Minimum bending radius ≥ 6×OD ≈ 93 mm for fixed installation; 12×OD ≈ 186 mm for drag-chain applications. The 15.5 mm OD and 245 kg/km make the cable robust yet flexible for routing in control panels, through conduits and along machine frames. When terminating, connect the braid shield to earth at one end (or both ends per system design) using a shield gland or drain wire. Use ferrules on the 56-strand conductors. Route the cable away from high-power motor cables by at least 350 mm. After installation, verify insulation resistance, shield continuity and 4-wire polarity before energizing.

6. Typical Service Applications

Motor power 3–5 kW for small industrial machines, panel power supply from transformer to distribution board, power distribution with control (L/N/PE/control), 4-wire heavy power + control + signal for production lines, and interconnection between control panels and field devices. The 4.0 mm² cross-section carries enough current for motor power 3–5 kW while the braid shield suppresses EMI from nearby VFDs and servo drives. Particularly suitable for packaging machines, textile machinery, and production lines where motor power and control circuits share the same cable. Not for: mains AC power distribution above 500 V, high-speed fieldbus, direct burial, or outdoor UV-exposed runs.

7. Testing & Quality Assurance Regime

Routine tests (100% production): DC resistance, AC voltage withstand (2000 V/5 min), insulation resistance, conductor construction, wall thickness, dimensional check, print legibility, mass per length, visual appearance, and packing. Type tests (per batch / material change): shield coverage, heat aging (100 °C/7 days), cold bend (-15 °C), jacket tensile, flame retardancy, and shielding effectiveness. Every coil ships with mill test certificate, ROHS and REACH declarations. The 300/500 V rating uses a 2000 V withstand test.

Cable Parameters

Cable Test Parameters

Cable Cross Section Structure

Construction Description

8. Factory Advantages

Pure annealed copper conductor at 56×0.30 mm stranding delivers maximum conductivity with Class 5 flexibility. Lower DC resistance (4.61 vs 7.41 Ω/km) supports motor power 3–5 kW and panel power supply. 0.8 mm insulation and 1.2 mm jacket provide robust dielectric and mechanical protection. Pure copper braid at ≈ 85% coverage provides low transfer impedance. 4-core quad formation combines heavy power, control, signal and ground in one cable. Colour-coded cores prevent wiring errors. 100% routine electrical QA on every reel. Cut-to-length on drums with sealed ends. Full traceability with MTC and certification support for industrial machinery tenders.

9. Packaging, Storage & Logistics

Cut to customer-specified length on export-grade drums, with both ends heat-sealed to prevent moisture ingress. Drums wrapped in waterproof film and corrugated cardboard, labelled with product type, core count, cross-section, length, weight, production date and reel number. Standard lengths 100/200/500 m. Store dry indoor, -10 to +40 °C, below 75% RH, away from direct sunlight and chemical solvents. FOB Shanghai/Nanjing/Qingdao; CIF and DAP available. Sample lead time 5–7 days; bulk production 15–25 days.

10. Procurement Specification

State cable designation "RVVP 4×4.0 pure copper", required length per drum, and core colour preference (e.g. red/black/blue/green-yellow for heavy power/control). Request the routine AC withstand test record (2000 V) and shield coverage certificate for the specific batch. Note that this is a pure copper (bare) heavy power+control variant for dry indoor use — for damp or outdoor applications, specify the tinned copper variant. Specify any regional certification requirements (UL 2464, CE, etc.) at order time. Payment: 30% T/T deposit, balance against B/L copy. Documents: MTC, ROHS/REACH, COO, commercial invoice, packing list.

11. Cable Industry FAQ

Q1: Why choose 4.0 mm² over 2.5 mm²? Lower DC resistance (4.61 vs 7.41 Ω/km), higher ampacity (25–32 A vs 16–22 A), and enough current for motor power 3–5 kW and panel power supply.

Q2: Can it power 3–5 kW motors? Yes — the 4.0 mm² core can carry 25–32 A, enough for 3–5 kW motors, while the other three cores handle control, signal and ground.

Q3: How long can the motor power run be? At 230 V and 25 A load, voltage drop is ≈ 1.15 V per 100 m — suitable for runs up to 50 m with acceptable voltage loss.

Q4: What is the voltage rating? 300/500 V, suitable for low-voltage heavy power and control circuits.

Q5: Why pure copper instead of tinned? Bare pure copper has higher conductivity than tinned copper, ideal for heavy power and control circuits where every ohm matters.

Q6: Is it suitable for outdoor use? No — limited UV resistance and bare copper oxidize in humidity. Use indoors or in UV-protected conduits.

Q7: How do you ground the shield? Connect braid to earth at one end (or both ends per system design) using a shield gland or drain wire.

Q8: What is the bending radius? ≥ 6×OD ≈ 93 mm for fixed; 12× for moving applications.

Q9: What is the temperature range? -15 to +70 °C continuous.

Q10: What proof ships? Routine AC test record (2000 V) + shield coverage certificate + MTC.

Q11: When should I step up to 4×6.0? For larger motors (5–7.5 kW), longer runs (50+ m), or higher current loads (35+ A), step up to RVVP 4×6.0 mm².