Structured Manufacturing Data (2026)

High Voltage Transformer

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard High Voltage Transformer 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 High Voltage Transformer is characterized by the integration of Core and Primary Winding. In industrial production environments, manufacturers listed on CNFX commonly emphasize Silicon steel laminations construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Electrical component that steps up input voltage to high voltage levels required for dielectric strength testing

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Product Specifications

Technical details and manufacturing context for High Voltage Transformer

Definition
A specialized transformer within an Industrial Dielectric Strength Tester that converts standard input voltage (typically 110V or 220V AC) to high voltage outputs (typically 1kV to 100kV range) necessary for testing the insulation properties and dielectric strength of electrical components, cables, and insulating materials.
Working Principle
Operates on electromagnetic induction principles, using primary and secondary windings with different turn ratios to step up voltage. When AC voltage is applied to the primary winding, it creates a changing magnetic field that induces a higher voltage in the secondary winding proportional to the turns ratio, enabling the generation of high test voltages while maintaining electrical isolation between input and output circuits.
Common Materials
Silicon steel laminations, Enameled copper wire, Insulating oil or epoxy resin, Porcelain or composite bushings
Technical Parameters
  • Maximum output voltage rating (kV) Customizable
Components / BOM
  • Core Part
    Provides magnetic path for flux, made of laminated silicon steel to reduce eddy current losses
    Material: Silicon steel laminations
  • Primary Winding Part
    Receives input voltage and creates magnetic field
    Material: Enameled copper wire
  • Secondary Winding Part
    Produces high output voltage through electromagnetic induction
    Material: Enameled copper wire with enhanced insulation
  • Insulation System Part
    Provides electrical isolation between windings and to ground
    Material: Insulating paper, epoxy resin, or oil
  • Bushings Part
    Provide insulated terminals for high voltage connections
    Material: Porcelain or composite polymer

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for High Voltage Transformer.

high voltage transformer for dielectric testing electrical equipment manufacturing transformer step-up transformer for insulation testing silicon steel core high voltage transformer porcelain bushing high voltage transformer

Applied To / Applications

This component is essential for the following industrial systems and equipment:

High Voltage Power Supply
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric (0.8-1.1 bar) for air-cooled units, 1-3 bar for oil-filled cooling systems
other spec: Relative humidity: 0-95% non-condensing, Altitude: ≤1000m above sea level, Dielectric withstand: 50-60 Hz frequency range
temperature: -20°C to +40°C (operating ambient), -40°C to +70°C (storage)
Media Compatibility
✓ Mineral oil dielectric fluid ✓ SF6 gas insulation ✓ Dry air/nitrogen environments
Unsuitable: Saltwater/marine environments with high chloride content
Sizing Data Required
  • Input voltage (kV)
  • Required output voltage (kV)
  • Test current capacity (mA)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Insulation breakdown
Cause: Thermal aging, moisture ingress, or electrical overstress degrading dielectric materials, leading to partial discharge or complete failure.
Winding deformation or short circuit
Cause: Mechanical stress from through-fault currents, thermal cycling, or manufacturing defects causing displacement, insulation damage, and inter-turn faults.
Maintenance Indicators
  • Audible humming, buzzing, or crackling sounds indicating partial discharge or loose components
  • Visible oil leaks, discoloration, or bulging in the transformer tank, suggesting overheating or internal pressure issues
Engineering Tips
  • Implement regular dissolved gas analysis (DGA) and thermographic inspections to detect early signs of insulation degradation and hotspots
  • Maintain proper cooling system operation and control loading to avoid thermal overstress, ensuring oil quality and breather condition to prevent moisture ingress

Compliance & Manufacturing Standards

Reference Standards
IEC 60076 (Power transformers) ANSI/IEEE C57.12.00 (General requirements for liquid-immersed distribution, power, and regulating transformers) EN 50588-1 (Medium power transformers 50 Hz, with highest voltage for equipment not exceeding 36 kV)
Manufacturing Precision
  • Winding resistance: +/- 2% of design value
  • Insulation resistance: Minimum 1000 MΩ at 20°C
Quality Inspection
  • Impulse withstand voltage test (Lightning impulse test)
  • Temperature rise test (to verify thermal performance under load)

Factories Producing High Voltage Transformer

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 is the primary application of this high voltage transformer?

This transformer is specifically designed for dielectric strength testing in electrical equipment manufacturing, stepping up input voltage to high levels required for insulation testing and quality control procedures.

What materials are used in the construction of this transformer?

The transformer features silicon steel laminations for the core, enameled copper wire for windings, insulating oil or epoxy resin for insulation, and porcelain or composite bushings for high voltage connections.

What are the main components in the BOM for this high voltage transformer?

The bill of materials includes bushings for high voltage connections, the silicon steel core, the insulation system (oil or epoxy), primary winding for input voltage, and secondary winding for stepped-up output voltage.

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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