ZC-VV22 Flame Retardant Power Cable Armoured Electrical Cable PVC STA

Product Overview

The ZC-VV22 is a low-voltage power cable typically featuring copper conductors and PVC insulation, reinforced with steel tape armor (usually associated with a "22" construction), and finally protected by a PVC outer sheath. The "ZC" designation is typically used to indicate the flame-retardant rating in its classification system. This model is ideal when buyers require an armored PVC cable that limits the spread of flame along the cable path while withstanding external pressure and installation stresses in protected underground or mechanically sensitive areas.

Rated Voltage

Typical Rated Voltage: 0.6/1 kV

Applications: Low-voltage power distribution and fixed wiring circuits

Application Scenarios for ZC-VV22

Typical Projects and Lines

• Underground conduits and protective trenches for low-voltage power distribution
• Building risers and shafts with specified flame retardant ratings
• Industrial facilities with dense cable routing and basic flame retardant requirements
• Cable corridors and passageways requiring line protection and fire resistance ratings
• Equipment rooms and utility areas requiring durable armored fixed wiring

When to Consider Other Models

• If Low Smoke Halogen-Free (LSZH) cable is required: Select LSZH model
• If fire resistance (circuit integrity) is required: Select fire-resistant/NH model
• If higher thermal performance is required: Select cross-linked polyethylene (XLPE) insulated armored cable

General Specifications Overview

Common Core Configurations (Depending on the Project)

• 1C For single-core feeder wiring (phase-separated installation)
• 2C For single-phase fixed wiring
• 3C For three-phase circuits without a neutral conductor (specific design depends on the situation)
• 4C For three-phase power distribution with neutral line
• 5C for three-phase power distribution with neutral line and protective earth (PE) (specific design depends on the situation)

Based on project experience, 3+1 and 3+2 feeder layouts are provided.

Common cross-sectional dimensions (mm²)

Common contractor combinations

• 4C x 10 4C x 16 4C x 25 4C x 35
• 5C x 10 5C x 16 5C x 25
• 3C x 6 3C x 10 3C x 16
• 1C x 35 1C x 50 1C x 70 1C x 95

Key Procurement Advantages

• Flame Retardant Rating, Ensuring Safe Cable Wiring

  Selecting a flame retardant rating helps limit the spread of flame along the cable path, resulting in safer wiring in shafts, corridors, and dense installation environments requiring basic flame retardancy.

• Steel Tape Armor, Protecting the Cable Path

  The armor layer improves resistance to compression and external pressure, reducing the risk of damage to conduits, trenches, and protected underground sections.

• PVC Insulation and Sheath, Effectively Controlling Costs

  PVC/PVC construction provides a common and cost-effective solution widely used in fixed cabling and distribution lines.

• Easy to Handle in the Field and Durable

  The PVC sheath offers excellent abrasion resistance during traction and installation.

• Easy Bill of Materials Matching for Large Projects

  Universal construction and dimensions simplify specification matching and duplicate supply.

Structural Overview

• Conductor: Copper stranded wire
• Insulation: PVC
• Grounding Layer: Protective grounding layer beneath the armor layer
• Armor Layer: Steel tape armor (STA)
• Outer Sheath: PVC (flame retardant rating depends on classification)
• Installation Type: Fixed installation, protecting the circuit

Manufacturing and Process Description

1. Copper Conductor Preparation

   Copper wire is drawn and stranded to meet resistance targets and accommodate bending requirements in actual installations.

2. PVC Insulation Extrusion

   The PVC insulation layer is extruded with controlled thickness to meet dielectric performance and dimensional requirements.

3. Core Identification and Assembly

   The core wires are identified and stacked in a stable geometry to ensure roundness and consistency of sheath structure.

4. Grounding Layer Formation

   Grounding layers are laid to protect the core wire assembly and provide a stable base for the steel tape armor.

5. Steel Tape Armor

   The steel tape is wound in a controlled overlap pattern to improve compressive strength and resistance to external pressure.

6. Flame-retardant PVC sheath extrusion

   A flame-retardant PVC sheath system is used to protect the armor layer and meet specified flame-retardant rating requirements.

7. Routine Inspections

   Typical inspections include conductor resistance, insulation thickness verification, spark testing, voltage testing, dimensional inspection, and sheath integrity checks.

Specifications

Selection Guide

• When your project requires flame-retardant PVC armored cable for fixed installations and protected wiring paths, choose ZC-VV22. Select the number of core wires based on the neutral and protection circuit design.
• Select the cross-sectional area based on current, line length, grouping, ambient temperature, and voltage drop limitations.
• If your project requires Low Smoke Halogen-Free (LSZH) or fire-resistant properties, please specify this requirement to match different construction methods.

Quick Inquiry Template

Frequently Asked Questions

• Q1 What is the purpose of ZC-VV22?

  A It is used for low-voltage fixed wiring and distribution, suitable for applications requiring a specified flame retardancy rating and path protection using steel tape armor in conduits, trenches, and dense cable routes.

• Q2 What does ZC stand for?

  A In naming systems, ZC is often used to identify the flame retardant rating. Please match the required rating to your project standards.

• Q3 What does 22 stand for?

  A In many naming systems, 22 represents a steel-tape armored construction, designed to improve compressive strength and line protection.

• Q4 Can ZC-VV22 be used for direct burial?

  A It is typically installed in conduits and protective trenches. The suitability for direct burial depends on soil conditions, mechanical risks, and local regulations. Please provide line details for proper matching.

• Q5 What is the difference between ZC-VV22 and VV22?

  A ZC-VV22 has flame retardant rating requirements, while standard VV22 may not be flame retardant unless otherwise specified.

• Q6 What information helps expedite pricing and delivery planning?

  A Required standards and flame retardant rating, core configuration, size list, total meters, line type, destination, reel length preference, and required documentation.