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Braided Shield Component – Electrical Equipment Manufacturing

Component Specifications

Definition

A Braided Shield is a conductive layer typically constructed from interwoven strands of tinned copper, aluminum, or stainless steel wires. In heating cable applications, it encases the inner conductive elements and insulation layers. Its primary functions are to provide a low-resistance path for fault currents, shield against external electromagnetic interference (EMI) and radio frequency interference (RFI), and offer mechanical protection against abrasion, crushing, and cut-through. The braided design maintains flexibility while ensuring consistent coverage and grounding capability.

Working Principle

The Braided Shield operates on the principle of a Faraday cage. When grounded, it creates an equipotential conductive enclosure around the heating cable's core. This enclosure intercepts and diverts external electromagnetic fields and electrostatic discharges to ground, preventing interference with the cable's electrical signals or heating performance. Simultaneously, it contains any electromagnetic emissions from the cable itself. The braided structure provides continuous electrical contact and mechanical flexibility, allowing the cable to bend without compromising shield integrity.

Materials

Tinned copper (most common for corrosion resistance and conductivity), bare copper, aluminum (lightweight, cost-effective), or stainless steel (high temperature and corrosion resistance). Wire gauge typically ranges from 34 AWG to 24 AWG. Coverage is usually 80-95% for optimal shielding effectiveness and flexibility.

Technical Parameters

Coverage 85%
Material Tinned Copper
Braid Angle 45 degrees
Flexibility Minimum Bend Radius: 6x cable diameter
DC Resistance < 5.0 Ω/km
Wire Diameter 0.20 mm
Temperature Range -40°C to +105°C
Shielding Effectiveness > 90 dB at 30 MHz

Standards

ISO 6722, DIN 72551-6, IEC 60092-350

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Braided Shield.

Parent Products

This component is used in the following industrial products

Heating Cable

An electrical cable designed to generate heat for temperature maintenance or frost protection in industrial piping systems.

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Engineering Analysis

Risks & Mitigation

Shield corrosion leading to poor grounding
Braid damage during installation causing EMI leaks
Inadequate coverage reducing shielding effectiveness
Incompatibility with cable insulation materials

FMEA Triads

Trigger: Corrosion due to moisture or chemical exposure
Failure: Increased resistance, poor grounding, shield discontinuity
Mitigation: Use tinned or corrosion-resistant materials; apply protective jacketing; ensure proper storage

Trigger: Mechanical stress during installation or operation
Failure: Braid breakage, reduced shielding, short circuits
Mitigation: Follow bend radius specifications; use strain relief; select appropriate braid density for application

Trigger: Improper grounding connection
Failure: Ineffective EMI shielding, electrical noise, safety hazards
Mitigation: Ensure secure grounding terminations; use compatible connectors; verify ground continuity testing

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Braid coverage: ±5%; DC resistance: ±10% of specified value; dimensional tolerance per ISO 286

Test Method

Shielding effectiveness per IEC 62153-4-3; continuity test per IEC 60332; mechanical pull test per UL 1581

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

Why is a Braided Shield used in heating cables?

It provides electromagnetic interference (EMI) protection, mechanical strength, and a reliable grounding path for safety and performance.

What materials are common for Braided Shields?

Tinned copper is most common due to its conductivity and corrosion resistance; aluminum and stainless steel are used for specific applications.

How does braid coverage affect performance?

Higher coverage (e.g., 90-95%) improves shielding but reduces flexibility; 80-90% balances effectiveness with cable bendability.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Braided Shield