---
title: "Core Clamping System"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:CORE_CLAMPING_SYSTEM"
  data_integrity_hash: "d49fba8b7b4e0bff189a99972d0fae2d"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:CORE_CLAMPING_SYSTEM"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/core-clamping-system.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/core-clamping-system"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "15-25 kN clamping force, -40°C to +85°C ambient temperature, 0-100% relative humidity"
    unit: "N·m"
engineering_limits:
  max_safe_operating_point:
    value: 12
    unit: "kN"
    consequence: "Thermal expansion mismatch between Invar alloy clamping plates (CTE 1.2×10⁻⁶/K) and silicon steel core (CTE 11×10⁻⁶/K) creates cyclic stress exceeding 250 MPa fatigue limit; galvanic corrosion between stainless steel fasteners (316L) and aluminum housing creates 0.5V potential difference in humid environments"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Thermal cycling between -40°C and +85°C at &gt;10 cycles/day"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement Belleville spring washers with 20 kN preload and Invar alloy thermal compensation plates"
  - node_2:
      trigger: "Vibration exposure &gt; 2 g RMS at 50-500 Hz from adjacent equipment"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Apply thread-locking adhesive (Loctite 263) with 20 N·m torque specification and anti-vibration lock washers"
bom_nodes:
  clamping-plate:
    type: "component"
    urn: "URN:CNFX:ME:CLAMPING_PLATE"
    interface_type: "physical-logic-coupled"
  insulating-spacer:
    type: "component"
    urn: "URN:CNFX:ME:INSULATING_SPACER"
    interface_type: "physical-logic-coupled"
  tensioning-bolt:
    type: "component"
    urn: "URN:CNFX:ME:TENSIONING_BOLT"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/core-clamping-system.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "d82158f75c19ded9e4be2a1c2fbc4faf1bdecae9212677142889f8d45a462d5d"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Core Clamping System

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

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **15-25 kN clamping force, -40°C to +85°C ambient temperature, 0-100% relative humidity**. Failure boundary: **Clamping force &lt; 12 kN leads to core displacement &gt; 0.5 mm, temperature &gt; 95°C causes thermal expansion exceeding 0.2% yield strength, humidity &gt; 85% accelerates corrosion rate &gt; 0.1 mm/year**, Mechanism: **Thermal expansion mismatch between Invar alloy clamping plates (CTE 1.2×10⁻⁶/K) and silicon steel core (CTE 11×10⁻⁶/K) creates cyclic stress exceeding 250 MPa fatigue limit; galvanic corrosion between stainless steel fasteners (316L) and aluminum housing creates 0.5V potential difference in humid environments**.

### 2.1 Analytical Physics Model
Governed by the **Frame Structural Deflection Analysis**:

> **Primary Equation**: $\delta = \frac{5 q L^4}{384 E I}$  
> **Engineering Impact**: Ensures structural stability for multi-stage machines.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| q | Uniform Load | Engineering Constant |
| E | Elastic Modulus | Engineering Constant |
| I | Moment of Inertia | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Thermal cycling between -40°C and +85°C at &gt;10 cycles/day | 8 | Clamping force reduction to &lt;14 kN due to bolt relaxation from differential expansion | Implement Belleville spring washers with 20 kN preload and Invar alloy thermal compensation plates |
| Vibration exposure &gt; 2 g RMS at 50-500 Hz from adjacent equipment | 8 | Fastener loosening causing 0.3-0.8 mm core displacement and 5-15% measurement error | Apply thread-locking adhesive (Loctite 263) with 20 N·m torque specification and anti-vibration lock washers |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | N·m | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Torque Calibration System**, **Precision Assembly Workstation**, **Automated Testing Fixture**  
**Downstream Applications**: Medium Voltage Current Transformer, Protection Relay System, Energy Metering Device  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are used in the Core Clamping System?
**A**: The system is constructed from cold-rolled steel and stainless steel for durability, with insulating epoxy laminate components to prevent electrical interference.

### Q: How does the Core Clamping System improve transformer performance?
**A**: It securely holds the magnetic core in place within medium voltage current transformers, reducing vibration and ensuring stable magnetic properties for accurate current measurement.

### Q: What components are included in the BOM?
**A**: The Bill of Materials includes a Clamping Plate, Insulating Spacer, and Tensioning Bolt, designed to work together for precise core fixation.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Core Clamping System](https://cnfx.com/industry/electrical-equipment-manufacturing/product/core-clamping-system)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: CORE_CLAMPING_SYSTEM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 0574b972
