INDUSTRY COMPONENT

Insulating Spacer

Insulating spacer for electrical isolation in core clamping systems

Component Specifications

Definition
A precision-engineered insulating component designed to maintain electrical isolation between conductive elements in transformer core clamping systems, preventing short circuits and ensuring operational safety by withstanding high voltage differentials and mechanical stresses.
Working Principle
Works by creating a physical barrier with high dielectric strength between metal clamping components, interrupting electrical conductivity paths while maintaining structural integrity under clamping pressure and thermal expansion.
Materials
High-grade electrical insulating materials: Fiberglass reinforced epoxy (FR-4), Polyimide (Kapton), Ceramic-filled composites, or Silicone rubber with temperature ratings from -40°C to 200°C, dielectric strength 15-30 kV/mm.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Dielectric Strength≥20 kV/mm
Surface Resistivity≥10^12 Ω·cm
Thickness Tolerance±0.1 mm
Compressive Strength≥150 MPa
Thermal Conductivity0.2-0.5 W/m·K
Operating Temperature-40°C to 180°C

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 1463, IEC 60672, ASTM D149

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Electrical short circuit
  • Dielectric breakdown
  • Mechanical failure under pressure
  • Thermal degradation
  • Moisture absorption reducing insulation
FMEA Triads
Trigger: Contamination or moisture ingress
Failure: Reduced dielectric strength leading to electrical breakdown
Mitigation: Use sealed designs, apply hydrophobic coatings, implement regular inspection and cleaning protocols
Trigger: Excessive clamping pressure
Failure: Mechanical cracking or deformation
Mitigation: Design with proper pressure distribution, use reinforced materials, implement torque-controlled installation
Trigger: Thermal cycling beyond material limits
Failure: Material degradation and loss of insulating properties
Mitigation: Select materials with appropriate temperature ratings, design for thermal expansion, implement temperature monitoring

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Dimensional tolerance ±0.1mm, dielectric strength tolerance +0/-10% of rated value
Test Method
Dielectric strength test per IEC 60243, dimensional verification per ISO 2768, thermal cycling test per IEC 60068-2-14

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
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Insulating Spacer

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

HLC Metal Parts Ltd
Dongguan, Guangdong, CN
IATF16949 ISO13485
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the primary function of an insulating spacer in core clamping systems?

To provide reliable electrical isolation between metal clamping components while maintaining structural integrity under mechanical pressure and thermal cycling.

How do I select the right insulating spacer material?

Consider operating voltage, temperature range, mechanical load, environmental conditions, and compliance requirements. FR-4 is common for general applications, while polyimide offers higher temperature resistance.

What are common failure modes of insulating spacers?

Dielectric breakdown from contamination or moisture, mechanical cracking under excessive pressure, thermal degradation, and tracking/erosion from partial discharges.

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.

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