Structured Manufacturing Data (2026)

Core Clamping System

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Core Clamping System used in the Electrical Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Core Clamping System is characterized by the integration of Clamping Plate and Insulating Spacer. In industrial production environments, manufacturers listed on CNFX commonly emphasize Cold-rolled steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical assembly that securely clamps and holds the magnetic core in place within a medium voltage current transformer.

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Product Specifications

Technical details and manufacturing context for Core Clamping System

Definition
The Core Clamping System is a critical component of the Medium Voltage Current Transformer Core Assembly, designed to apply precise and uniform pressure to the laminated magnetic core stack. It ensures the core remains stable, prevents vibration-induced noise, maintains proper magnetic circuit integrity, and protects against mechanical stress during operation and transportation.
Working Principle
The system typically uses a combination of clamping plates, bolts, springs, and insulating components to apply controlled compressive force to the core laminations. This force minimizes air gaps between laminations, reduces magnetic losses (eddy currents and hysteresis), and ensures the core maintains its structural and electrical integrity under varying thermal and electromagnetic conditions.
Common Materials
Cold-rolled steel, Stainless steel, Insulating epoxy laminate
Technical Parameters
  • Recommended torque for clamping bolts to achieve proper core pressure without damaging laminations. (N·m) Per Request
Components / BOM
  • Clamping Plate Part
    Distributes clamping force evenly across core surface
    Material: Cold-rolled steel
  • Insulating Spacer Part
    Provides electrical isolation between core and clamping structure
    Material: Epoxy laminate
  • Tensioning Bolt Part
    Applies and maintains precise clamping pressure
    Material: Stainless steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Core Clamping System.

medium voltage current transformer core clamp magnetic core clamping system electrical cold rolled steel transformer clamping plate insulating spacer for current transformer tensioning bolt core assembly CT

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max clamping force: 5000 N, Max compressive stress: 50 MPa
other spec: Core diameter range: 50-300 mm, Vibration resistance: 5g @ 10-2000 Hz, Insulation class: F (155°C)
temperature: -40°C to +150°C (operating), -55°C to +180°C (storage)
Media Compatibility
✓ Silicon steel laminated cores ✓ Nanocrystalline magnetic cores ✓ Ferrite magnetic cores
Unsuitable: Corrosive chemical environments (acids, alkalis, salt spray)
Sizing Data Required
  • Core outer diameter and length
  • Required clamping force for magnetic performance
  • Transformer housing dimensions and mounting constraints

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Hydraulic Seal Degradation
Cause: Contamination of hydraulic fluid with particulate matter leading to abrasive wear, or chemical incompatibility causing seal swelling/brittleness.
Mechanical Fatigue/Cracking of Clamping Components
Cause: Cyclic overloading beyond design limits due to improper pressure settings or shock loads from the process, leading to stress concentration and eventual fracture.
Maintenance Indicators
  • Visible hydraulic fluid leaks around cylinder seals or fittings, indicating seal failure.
  • Abnormal audible noises during clamping (e.g., knocking, grinding, or hissing), suggesting mechanical wear or hydraulic issues.
Engineering Tips
  • Implement a strict hydraulic fluid cleanliness program with regular filtration and analysis to prevent contamination-induced failures.
  • Conduct periodic torque or pressure calibration checks to ensure clamping forces remain within specified design limits, preventing overstress.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ANSI B11.19 - Performance Requirements for Safeguarding DIN 5480 - Involute Splines Based on Reference Diameters
Manufacturing Precision
  • Bore Diameter: +/-0.01mm
  • Parallelism of Clamping Faces: 0.05mm
Quality Inspection
  • Dimensional Verification with CMM
  • Hardness Testing (Rockwell C Scale)

Factories Producing Core Clamping System

Manufacturer profiles with relevant production capability in China

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

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 materials are used in the Core Clamping System?

The system is constructed from cold-rolled steel and stainless steel for durability, with insulating epoxy laminate components to prevent electrical interference.

How does the Core Clamping System improve transformer performance?

It securely holds the magnetic core in place within medium voltage current transformers, reducing vibration and ensuring stable magnetic properties for accurate current measurement.

What components are included in the BOM?

The Bill of Materials includes a Clamping Plate, Insulating Spacer, and Tensioning Bolt, designed to work together for precise core fixation.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Electrical Equipment Manufacturing.

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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