RVVP 2x2.5mm² Braided Copper Shielded Control Cable Protection for Variable Frequency Drive 300/500V

RVVP 2x2.5mm² Braided Copper Shielded Control Cable Protection for Variable Frequency Drive 300/500V

Cable Designation & Meaning

Construction: Two 2.5 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 2×2.5 mm² — Flexible Shielded Power-Control Cable — Specification

1. Overview & Ratings

RVVP 2×2.5 is a shielded power-control cable rated 450/750 V — the largest 2-core RVVP size, bridging signal-grade shielded cable and small power cable. R = flexible tinned copper, V = PVC insulation, V = PVC jacket, P = braided shield. OD ≈ 9.2 mm, ≈ 95 kg/km (est.), ≈ 20–25 A. Two 2.5 mm² tinned copper cores carry real motor and actuator current while the 85% braid suppresses EMI/RFI. Designed for motor control wiring, solenoid and actuator power, and auxiliary power runs near sensitive electronics. Max conductor temperature 70 °C, -15 to +70 °C. Not for outdoor UV exposure or mains distribution.

2. Construction Stack (Inner → Outer, expanded)

3. Electrical Characteristics

DC resistance ≤ 7.41 Ω/km at 20 °C per GB/T 3956 — roughly 44% lower than the 1.5 mm² variant, cutting voltage drop to ≈ 0.74 V per 100 m at 10 A. Rated voltage 450/750 V. Estimated ampacity ≈ 20–25 A in free air at 30 °C. Insulation resistance ≥ 25 MΩ·km. Routine AC withstand test at 2500 V for 5 minutes. Typical capacitance ≈ 170 pF/m at 1 kHz. The braid provides ≈ 60–70 dB shielding at 30–1000 MHz. Suitable for 24 V DC and 110/220 V AC auxiliary power runs up to 20–50 m.

Insulation & Sheath Data

Electrical Parameters

Reference values: RVVP 2×2.5 at 16 A per core, 24 V DC → max load ≈ 384 W​ per core (low-power device supply). At 230 V AC → max load ≈ 3,680 VA​ per core (light power use).

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 where corrosive fume is a concern. For public or enclosed spaces, specify LSZH alternatives. The thicker 0.8 mm Type ST jacket offers improved oil resistance for machine tool and press applications. UV resistance is limited; install indoors or in UV-protected conduits only.

Temperature Characteristics

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

5. Installation Practice & Handling

Minimum bending radius ≥ 6×OD ≈ 55 mm for fixed installation; 12×OD ≈ 110 mm for drag-chain applications. The 2.5 mm² core is noticeably stiffer than 1.5 mm², so use proper cable trays and management. Terminate the braid shield to earth via a shield gland or drain wire — because the cable carries more power, shield grounding must be robust. Use heavy-duty ferrules on the 50-strand conductor. Route at least 250 mm away from motor and VFD power cables. After installation, verify insulation resistance, shield continuity and polarity before energizing.

Mechanical & Installation Parameters

6. Typical Service Applications

Motor control wiring between contactor and motor terminal, solenoid valve and actuator power circuits, auxiliary 24 V DC and 110 V AC power runs on machines, PLC I/O power drops, and interconnection between control panels and field devices. The 2.5 mm² cross-section is the sweet spot for runs up to 20–50 m where current demand is 10–20 A and EMI protection matters — for example, wiring near servo drives, robot arms and welding equipment. Not for: mains AC power distribution, high-speed fieldbus, direct burial, or outdoor UV-exposed runs.

7. Testing & Quality Assurance Regime

Routine tests (100% production): DC resistance, AC voltage withstand (2500 V/5 min), insulation resistance, conductor construction, wall thickness, dimensional check, print legibility, mass per length, visual appearance, and packing. Type tests (per batch): shield coverage plus fault-current withstand, 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 fault-current test is added for power-control duty.

Cable Parameters

Cable Test Parameters

Cable Cross Section Structure

Construction Description

8. Factory Advantages

Pure copper conductor at 50×0.25 mm stranding balances flexibility and power capacity. Thicker 0.8 mm insulation and 1.0 mm jacket match the 450/750 V power-control rating. Tinned copper braid at ≈ 85% coverage handles both EMI shielding and higher earth-fault energy. Low DC resistance (7.41 Ω/km) minimizes voltage drop on longer power runs. Heavy-duty oil-resistant Type ST jacket for press and machine tool duty. 100% routine electrical QA on every reel. Cut-to-length coils or drums. Full traceability with MTC and certification support for machinery and industrial tenders.

9. Packaging, Storage & Logistics

Cut to customer-specified length on export-grade coils or wooden drums, with both ends heat-sealed. Due to the ≈ 95 kg/km weight, drums are recommended for lengths over 200 m to avoid coil distortion. Coils/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 100/200/500/1000 m. Store dry indoor, -10 to +40 °C, below 75% RH. 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 2×1.5", required length per coil/drum, and core colour preference. Request the routine AC withstand test record (2500 V) and shield coverage certificate for the specific batch. Note that the voltage rating is 450/750 V — higher than the 300/500 V of smaller cross-sections. 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. For drag-chain duty, specify RVVSP variant with enhanced flexible braid.

11. Cable Industry FAQ

Q1: Why choose 2.5 mm² over 1.5 mm²? Lower DC resistance (7.41 vs 13.3 Ω/km), higher ampacity (20–25 A vs 12–15 A), and heavier construction for motor control and actuator power circuits.

Q2: Can it power small motors? Yes — it is designed for motor control and solenoid/actuator power up to 20–25 A at 450/750 V.

Q3: What is the voltage rating? 450/750 V, suitable for 110 V AC and 220 V AC auxiliary control circuits.

Q4: How does the braid handle fault current? The 85% tinned copper braid is sized to handle higher earth-fault energy, verified per batch by a fault-current test.

Q5: Is it suitable for drag chains? Not as standard — specify RVVSP (flexible braid) variant for continuous-flex applications.

Q6: Can it be used outdoors? No — limited UV resistance; install indoors or in UV-protected conduits.

Q7: Is it halogen-free? No — PVC is halogen-containing. Use LSZH for enclosed or public spaces.

Q8: What is the bending radius? ≥ 6×OD ≈ 55 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 (2500 V) + shield coverage + fault-current test + MTC.

Q11: What is the voltage drop at 10 A? ≈ 0.74 V per 100 m — roughly half the drop of 1.5 mm², making it ideal for longer power-control runs.