Braided Shield: Temperature Range -40°C to +105°C, Coverage 85%

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

Parameter	Typical range	Notes & selection driver
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

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

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

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

Typical Suppliers & Equivalents

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

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Braided Shield

Manufacturer profiles associated with Braided Shield.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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