---
title: "Magnetic Field Coil"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MAGNETIC_FIELD_COIL"
  data_integrity_hash: "8fcc9e95e8c71c8c832dd89316cbd226"
  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:MAGNETIC_FIELD_COIL"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/magnetic-field-coil.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/magnetic-field-coil"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.5 Tesla magnetic flux density at 20-100 A coil current"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 180
    unit: "°C"
    consequence: "Joule heating (I²R losses) exceeding thermal dissipation capacity, causing insulation breakdown via pyrolysis at 180°C; magnetic saturation at 3.0 Tesla reduces permeability to μ≈μ₀"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Coil current exceeding 120 A due to control system fault"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Embedded NTC thermistor with 150°C trip point in coil winding"
  - node_2:
      trigger: "Mechanical vibration at 120 Hz resonance frequency from adjacent equipment"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Epoxy vacuum impregnation with 95% fill ratio and vibration damping mounts"
bom_nodes:
  coil-windings:
    type: "component"
    urn: "URN:CNFX:ME:COIL_WINDINGS"
    interface_type: "physical-logic-coupled"
  insulation-layer:
    type: "component"
    urn: "URN:CNFX:ME:INSULATION_LAYER"
    interface_type: "physical-logic-coupled"
  terminal-connectors:
    type: "component"
    urn: "URN:CNFX:ME:TERMINAL_CONNECTORS"
    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/magnetic-field-coil.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "5e1e0bf808deeb075fb26e05fe8f613492b852ec7808a105cb784c536bf4b6ed"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Magnetic Field Coil

## 1. Technical Definition
An electromagnetic coil designed to generate a controlled magnetic field within a vacuum circuit breaker's arc chute assembly.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.5 Tesla magnetic flux density at 20-100 A coil current**. Failure boundary: **Coil temperature exceeding 180°C (Class H insulation limit) or magnetic flux density exceeding 3.0 Tesla (saturation threshold)**, Mechanism: **Joule heating (I²R losses) exceeding thermal dissipation capacity, causing insulation breakdown via pyrolysis at 180°C; magnetic saturation at 3.0 Tesla reduces permeability to μ≈μ₀**.

### 2.1 Analytical Physics Model
Governed by the **Joule Heating & Thermal Resistance**:

> **Primary Equation**: $P = I^2 R = \frac{V^2}{R}$  
> **Engineering Impact**: Governs heating element sizing for shrink tunnels/sealers.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| I | Current | Engineering Constant |
| R | Resistance | Engineering Constant |
| V | Voltage | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Coil current exceeding 120 A due to control system fault | 8 | Insulation carbonization and inter-turn short circuit | Embedded NTC thermistor with 150°C trip point in coil winding |
| Mechanical vibration at 120 Hz resonance frequency from adjacent equipment | 8 | Wire fatigue fracture at bending stress &gt; 200 MPa | Epoxy vacuum impregnation with 95% fill ratio and vibration damping mounts |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Vacuum Pump System**, **Coil Winding Machine**, **Insulation Impregnation System**  
**Downstream Applications**: Vacuum Circuit Breakers, Medium Voltage Switchgear, Electrical Substation Equipment  

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

### Q: What are the key benefits of using copper windings in magnetic field coils?
**A**: Copper windings provide excellent electrical conductivity, thermal efficiency, and durability, ensuring consistent magnetic field generation and long-term reliability in demanding electrical applications.

### Q: How does this coil enhance vacuum circuit breaker performance?
**A**: The coil generates a controlled magnetic field that efficiently directs and extinguishes arcs within the arc chute assembly, improving breaker reliability, reducing maintenance, and extending equipment lifespan.

### Q: What insulation materials are recommended for high-temperature applications?
**A**: Polyimide film insulation is ideal for high-temperature environments, offering superior thermal stability, electrical insulation, and resistance to degradation in vacuum circuit breaker operations.

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

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Magnetic Field Coil](https://cnfx.com/industry/electrical-equipment-manufacturing/product/magnetic-field-coil)**

### 🌐 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**: MAGNETIC_FIELD_COIL | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: b71e0b71
