INDUSTRY COMPONENT

Insulation Body

High-voltage insulation body for cable terminations providing electrical isolation and environmental protection.

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Component Specifications

Definition
The insulation body is a critical component in high-voltage insulated cable terminations, designed to provide reliable electrical insulation between the cable conductor and the surrounding environment. It prevents electrical discharge, corona formation, and flashover by maintaining dielectric strength under high voltage stress, while also offering mechanical support and environmental sealing against moisture, contaminants, and UV radiation.
Working Principle
Works by utilizing high-dielectric-strength materials to create a barrier that withstands electrical potential differences, distributing electric field stress evenly to prevent localized breakdown, and providing a controlled interface between the cable and termination hardware.
Materials
High-performance polymer composites such as silicone rubber (HTV/RTV), ethylene propylene diene monomer (EPDM), or epoxy resin with inorganic fillers (e.g., alumina trihydrate) for tracking resistance. Material must have high dielectric strength (>20 kV/mm), excellent hydrophobicity, UV stability, and thermal resistance (typically -50°C to +150°C).
Technical Parameters
  • IP Rating IP68 for submersible applications
  • Voltage Rating Up to 36 kV (common), higher for specialized applications
  • Leakage Current <1 μA at rated voltage
  • Creepage Distance Designed per IEC 60815 for pollution severity
  • Temperature Range -50°C to +150°C
  • Dielectric Strength >20 kV/mm
  • Tracking Resistance CTI ≥ 600 V
Standards
IEC 60502, IEC 60840, IEEE 48, DIN VDE 0278

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Insulation Body.

high-voltage insulation body cable termination insulation electrical insulator dielectric component HV cable accessory silicone rubber insulator EPDM insulation IEC 60502 Insulation Body Insulation Body in Electrical Equipment Manufacturing

Parent Products

This component is used in the following industrial products

High-Voltage Insulated Cable Termination

Electrical termination component for high-voltage cable systems providing insulation and connection.

View Product Details

High-Voltage Bushings

Insulating components that allow high-voltage conductors to pass safely through grounded barriers in test chambers

View Product Details

Terminal Block / Connection Box

Electrical connection interface for heating element wiring

View Product Details

Engineering Analysis

Risks & Mitigation
  • Electrical breakdown due to contamination
  • Partial discharge leading to insulation failure
  • Thermal runaway under overload conditions
  • Mechanical damage during installation
  • Material degradation from UV/ozone exposure
FMEA Triads
Trigger: Surface contamination (dust, salt, moisture)
Failure: Surface tracking and flashover
Mitigation: Regular cleaning, use of hydrophobic materials, adequate creepage distance design
Trigger: Internal voids or impurities in material
Failure: Partial discharge and electrical treeing
Mitigation: Strict quality control during manufacturing, vacuum casting processes, material testing per IEC 60243
Trigger: Over-tightening during installation
Failure: Mechanical stress cracking
Mitigation: Use of torque wrenches, proper installation training, stress-relief designs

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Dimensional tolerance ±0.5 mm on critical interfaces, dielectric strength tolerance +0/-10% of rated value
Test Method
Partial discharge test (<5 pC at 1.5× rated voltage), power frequency withstand test, impulse withstand test, tracking resistance test per IEC 60587

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

What is the primary function of an insulation body in cable terminations?

To provide electrical isolation between the energized conductor and ground, prevent surface tracking and flashover, and protect against environmental factors like moisture and contamination.

How do you select the right insulation body material?

Based on voltage rating, environmental conditions (pollution level, UV exposure, temperature extremes), mechanical requirements, and compatibility with cable insulation material (XLPE, EPR, etc.).

What are common failure modes of insulation bodies?

Surface tracking due to contamination, electrical treeing from voids or impurities, thermal degradation from overload, mechanical damage during installation, and loss of hydrophobicity.

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.

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