Common Problems + Causes + Solutions of TRVV Drag Chain Cable

1. Core break or wire break in a short time

• Ordinary RVV cable used instead of TRVV drag chain cable

• Bending radius too small, exceeding cable limit

• High moving speed or long running stroke

• Poor conductor toughness with fewer copper strands

• Use special TRVV drag chain cable instead of ordinary RVV

• Ensure bending radius ≥ 8–10 times the outer diameter of the cable

• Choose high-flexibility type with super-fine oxygen-free copper conductor

• Use high bending-resistant TRVV for high-speed and long-stroke equipment

2. Jacket cracking, hardening or damage

• Too high or too low ambient temperature

• Poor oil resistance and wear resistance

• Sharp corners or burrs inside the drag chain

• Select TRVV with oil-resistant & cold-resistant flexible PVC jacket

• Clean burrs and sharp edges inside the drag chain before installation

• Use oil-resistant TRVV in oily environments

• Use cold-resistant type in low-temperature environments

3. Signal interference, equipment error, unstable communication

• Power cables and signal cables installed in the same drag chain

• Non-shielded cable used

• Poor grounding

• Use shielded TRVVP drag chain cable for signal control

• Separate power cables and signal cables

• Ensure reliable single-end grounding of the shielding layer

4. Cable twisting, knotting or deviation in the drag chain

• Improper reserved length of the cable

• No cable clamps or fixings used

• Multiple cables with different diameters and tensions

• Fix the cable at both ends of the drag chain

• Keep proper reserved length, not too tight or too loose

• Use cables with similar diameters in the same drag chain

• Use separators if necessary

5. Cable heating, fast insulation aging

• Actual current exceeds the current-carrying capacity

• Extrusion and poor heat dissipation

• High ambient temperature

• Select larger cross-section according to equipment power

• Avoid excessive squeezing and sharp bending

• Use heat-resistant type in high-temperature environments

6. Insufficient length, too many joints, high failure rate

• Length not calculated accurately according to actual stroke

• Too many splicing joints

• Calculate total length: stroke × 2 + proper margin

• Use one-piece cable and reduce intermediate joints