ZA-DJVP3VP3 Cable | Low-Smoke, Zero-Halogen Shielded Instrumentation

Data integrity failures don’t announce themselves. They surface as intermittent signal drift, a rogue alarm at 3 AM, or a batch of rejected product traced back to a corrupted sensor reading. By the time the root cause is identified, the cost isn’t just the cable replacement—it’s the unplanned downtime, the calibration man-hours, and the compliance paperwork. The ZA-DJVP3VP3 is designed to remove this variable entirely. Engineered for clean signal transmission in electrically noisy industrial environments, this cable combines individual and overall shielding with a low-smoke, zero-halogen (LSZH) jacket. The result is a single solution that protects both your data stream and your personnel during a fire event—without adding complexity to your bill of materials.

Shielding Architecture: How Dual-Layer Protection Prevents Crosstalk and Ground Loops

This is not a single-shield design. The ZA-DJVP3VP3 uses an aluminium/polyester foil wrap around each twisted pair (100% coverage) plus an overall tinned copper wire braid. The individual pair shields stop capacitive coupling between adjacent pairs. The overall braid rejects high-frequency electromagnetic interference (EMI) from VFDs, motor starters, and switchgear operating in the same cable tray.

What this means for your project: You can route instrumentation and power cables in closer proximity without risking signal contamination. For a water treatment plant where 60 analogue signal pairs run through a single trench, that spacing tolerance alone can shrink civil works costs.

• Feature: Aluminium/polyester foil on each pair (100% optical coverage) + tinned copper drain wire per pair.
  Advantage: Every twisted pair is an isolated transmission line. Capacitive imbalance between pairs drops below 50 pF/m.
  Benefit to Your Project: 4-20 mA loop signals remain stable across 400+ metre runs. No parasitic coupling from adjacent pairs carrying 24V DC switching transients.

• Feature: Overall tinned copper wire braid with minimum 80% optical coverage.
  Advantage: Creates a Faraday cage around the entire core, absorbing radiated EMI from external sources before it reaches the pair shields.
  Benefit to Your Facility: You can run this cable within 300 mm of a 690V VFD feeder without degrading the signal-to-noise ratio on Modbus RTU (RS-485) circuits.

• Feature: LSZH (Low-Smoke Zero-Halogen) sheath material, compliant with IEC 60332-1 for flame propagation and IEC 60754 for halogen gas emission.
  Advantage: In a fire, the jacket emits no corrosive hydrogen chloride gas and produces translucent smoke rather than dense black smoke.
  Benefit to Occupied Spaces: Evacuation routes remain visible. Switchgear and server racks in the same room avoid secondary corrosion damage from acidic gas—a claim that PVC-jacketed cables cannot make.

• Feature: Solid plain copper conductors, stranded in Class 2 or Class 5 configurations depending on cross-section.
  Advantage: Reliable termination into screw-clamp, spring-clamp, and IDC terminal blocks without cold flow or loosening over thermal cycles.
  Benefit to Maintenance Teams: One less variable during annual loop checks. No intermittent faults traced to a conductor that receded inside the terminal.

Technical Specifications

Standard delivery formats: 500 m and 1000 m wooden or plywood drums. Other lengths available on request.

Where This Cable Is Deployed

• Heavy industrial process automation (chemical, petrochemical, steel). The LSZH jacket eliminates the risk of secondary HCl corrosion in control rooms adjacent to process areas. Pair-level shielding preserves 0-10V and 4-20mA signal accuracy despite arc furnace or electrolysis-plant EMI levels.

• Rail and metro infrastructure (tunnels, stations, signalling). Regulatory frameworks like EN 45545-2 mandate low-smoke, zero-halogen materials in enclosed underground public spaces. The ZA-DJVP3VP3 meets the fire-performance prerequisites for fixed installation in transit tunnels.

• Power generation and desalination plants. High ambient temperatures and dense cable ladder packing make PVC jackets a liability. The braided shield drains induced currents from nearby generator busbars, preventing PLC I/O card channel burnout.

• Water and wastewater treatment facilities. Long cable runs from field-mounted flowmeters and analysers back to the central MCC building need stable capacitance values per metre. This cable’s consistent impedance means no signal-conditioning recalibration when spares are pulled from inventory for a replacement run.

• Data centre building management systems (BMS). Modbus and BACnet MSTP networks monitoring chiller plants and backup generators can coexist with the building’s 400V distribution without segmenting cable pathways. The LSZH sheath also aligns with insurer requirements for critical infrastructure fire safety.

Compliance & Conformance

• ✅ IEC 60332-1-2 — Flame retardance, single cable
• ✅ IEC 60332-3-22 — Flame retardance, bunched cables (Category A)
• ✅ IEC 60754-1/2 — Determination of halogen acid gas content (LSZH verified)
• ✅ IEC 61034-2 — Smoke density measurement (light transmittance ≥ 60%)
• ✅ EN 50288-7 — Instrumentation cables with LSZH sheath (where applicable by construction)
• ✅ RoHS Directive 2011/65/EU — Restriction of hazardous substances in conductor, insulation, and sheath compounds
• ✅ ISO 9001:2015 — Manufacturing facility quality management system
• ✅ CE Marking — Applicable under the Low Voltage Directive 2014/35/EU

Factory acceptance test reports (FAT) are issued with every drum. These include spark test continuity, conductor resistance per IEC 60228, insulation resistance at 500V DC, and high-voltage test per the table above. Third-party inspection by SGS, Bureau Veritas, or TÜV can be arranged before shipment at buyer’s nomination.

Questions Procurement Engineers Ask Before Specifying

Q: Can you supply this cable with a blue outer sheath for intrinsically safe (IS) circuits to comply with IEC 60079-14 colour identification?
A: Yes. While the standard stock colour is black, a light blue (RAL 5015) LSZH outer sheath is available for factory-order runs. Minimum order quantities for custom colours start at 2000 metres per cross-section. The cable construction itself is not an IS barrier—it is still a shielded instrumentation cable—but the blue jacket provides clear visual segregation in IS junction boxes and marshalling panels to satisfy the installer and the ATEX/IECEx inspector.

Q: We need pulled-in lengths of 780 metres without a joint. What is your standard drum capacity, and can you guarantee a single continuous piece?
A: The maximum continuous manufactured length depends on the conductor cross-section. For 1.0 mm² and 1.5 mm² conductors (the most common for analogue signals), we ship 1000-metre singles on standard plywood reels. So your 780-metre requirement is within standard production tolerance. Each cable is spark-tested continuously inline during the sheathing process. If a fault is detected, that section is cut out—so we do not splice mid-drum. The cable you receive is one uninterrupted extrusion and stranding run.

Q: What is the delivery lead time for 5 kilometres of 12-pair ZA-DJVP3VP3, and do you hold buffer stock for common configurations?
A: For 1-pair and 2-pair constructions in 1.0 mm², we maintain buffer stock in Shanghai and Rotterdam warehouses—approximately 15,000 to 20,000 metres each. These can ship within 5 working days of confirmed PO and payment. A 12-pair cable is a make-to-order item for us and for every manufacturer we know. Current lead time for 5000 metres of 12-pair is 4 to 5 weeks from order confirmation. If your project can use three 4-pair cables instead of one 12-pair, you gain stock availability and an easier pull through conduit bends. I’m happy to walk your design engineer through the trade-off.

Request Your Project Quote and Cable Datasheet

This page gives you the construction and performance envelope. Your application will have specific length, pair-count, and scheduling constraints that no website can answer. Send us your cable schedule or a simple email with the required pair count, conductor size (0.75 / 1.0 / 1.5 / 2.5 mm²), total route length, and any regulatory jurisdiction (EU, UKCA, AS/NZS). We return a priced offer and the full factory datasheet within one working day—often within four hours if received during Asian business hours.

Email your specification to [insert email] or call [insert phone number] to speak directly with an application engineer. No generic call centre routing. Just a product specialist who can read a single-line diagram and confirm delivery terms.