---
title: "Power Regulator / SCR Controller"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:POWER_REGULATOR_SCR_CONTROLLER"
  data_integrity_hash: "e163c6a8d880b7051c4dd4353d4dafd1"
  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:POWER_REGULATOR_SCR_CONTROLLER"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/power-regulator-scr-controller.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/power-regulator-scr-controller"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-600 VAC, 0-1000 A, 40-70 Hz"
    unit: "A, V"
engineering_limits:
  max_safe_operating_point:
    value: 125
    unit: "°C"
    consequence: "Thermal runaway due to excessive I²R losses in SCR junctions, exceeding silicon's 175°C maximum operating temperature, causing latch-up failure"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Line voltage transients exceeding 1.2 kV for &gt;100 μs"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Metal oxide varistor (MOV) with 1.0 kV clamping voltage and RC snubber network (10 Ω, 0.1 μF)"
  - node_2:
      trigger: "Cooling fan failure reducing airflow below 0.5 m³/min"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dual redundant fans with thermistor monitoring (NTC 10kΩ) and forced-air convection design"
bom_nodes:
  scr-module:
    type: "part"
    urn: "URN:CNFX:ME:SCR_MODULE"
    interface_type: "physical-logic-coupled"
  heat-sink:
    type: "component"
    urn: "URN:CNFX:ME:HEAT_SINK"
    interface_type: "physical-logic-coupled"
  gate-drive-circuit:
    type: "part"
    urn: "URN:CNFX:ME:GATE_DRIVE_CIRCUIT"
    interface_type: "physical-logic-coupled"
  current-sensor:
    type: "part"
    urn: "URN:CNFX:ME:CURRENT_SENSOR"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/power-regulator-scr-controller.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "afeaae8ec5c590741530922e609c161cb0cd497ebf6373817b72502942340e0d"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Power Regulator / SCR Controller

## 1. Technical Definition
Electronic device that regulates electrical power to heating elements by controlling the firing angle of silicon-controlled rectifiers (SCRs).

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-600 VAC, 0-1000 A, 40-70 Hz**. Failure boundary: **Junction temperature exceeding 125°C, dv/dt &gt; 1000 V/μs, di/dt &gt; 100 A/μs**, Mechanism: **Thermal runaway due to excessive I²R losses in SCR junctions, exceeding silicon's 175°C maximum operating temperature, causing latch-up failure**.

### 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 |
| :--- | :--- | :--- | :--- |
| Line voltage transients exceeding 1.2 kV for &gt;100 μs | 8 | Gate oxide breakdown in SCRs, causing uncontrolled conduction | Metal oxide varistor (MOV) with 1.0 kV clamping voltage and RC snubber network (10 Ω, 0.1 μF) |
| Cooling fan failure reducing airflow below 0.5 m³/min | 8 | Heat sink temperature rise above 85°C, triggering thermal shutdown | Dual redundant fans with thermistor monitoring (NTC 10kΩ) and forced-air convection design |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [SCR Module](https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/scr-module.md) `(Standalone System)`
- [Gate Drive Circuit](https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/gate-drive-circuit.md) `(Standalone System)`
- [Current Sensor](https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/current-sensor.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Industrial Power Supply**, **Cooling System**, **Control Panel Interface**  
**Downstream Applications**: Industrial Ovens, Heat Treatment Furnaces, Temperature-Controlled Chambers  

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

### Q: How does an SCR controller regulate power to heating elements?
**A**: The SCR controller regulates power by adjusting the firing angle of silicon-controlled rectifiers, which controls the portion of each AC cycle delivered to the heating element, enabling precise temperature management.

### Q: What are the key components in an SCR power regulator BOM?
**A**: Essential components include the SCR module for power switching, current sensor for load monitoring, gate drive circuit for SCR triggering, and aluminum heat sink for thermal management.

### Q: Why use SCR controllers in electrical equipment manufacturing?
**A**: SCR controllers provide accurate power regulation, improve energy efficiency, extend heating element lifespan, and offer reliable performance in industrial environments with varying load conditions.

## 6. Manufacturing Compliance

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Power Regulator / SCR Controller](https://cnfx.com/industry/electrical-equipment-manufacturing/product/power-regulator-scr-controller)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: POWER_REGULATOR_SCR_CONTROLLER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 29494b69
