Industry-Verified Manufacturing Data (2026)

High Voltage Transformer

Based on aggregated insights from multiple verified 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

View Full Specifications Explore Manufacturing Sources

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
    Provides magnetic path for flux, made of laminated silicon steel to reduce eddy current losses
    Material: Silicon steel laminations
  • Primary Winding
    Receives input voltage and creates magnetic field
    Material: Enameled copper wire
  • Secondary Winding
    Produces high output voltage through electromagnetic induction
    Material: Enameled copper wire with enhanced insulation
  • Insulation System
    Provides electrical isolation between windings and to ground
    Material: Insulating paper, epoxy resin, or oil
  • Bushings
    Provide insulated terminals for high voltage connections
    Material: Porcelain or composite polymer
Engineering Reasoning
0.1-100 kV input, 1-1000 kV output, 50-60 Hz frequency, 100-5000 kVA power rating
Dielectric breakdown at 25 kV/mm electric field strength in mineral oil insulation, thermal runaway at 105°C winding temperature, mechanical resonance at 100-120 Hz vibration frequency
Design Rationale: Electrostatic stress exceeding Paschen's law breakdown voltage (V_b = 24.4pd + 6.73√pd) for transformer oil, joule heating (P_loss = I²R) causing insulation pyrolysis, magnetostrictive forces (ε = λ_s·B²/2μ₀) inducing core lamination fatigue
Risk Mitigation (FMEA)
Trigger Partial discharge inception voltage (PDIV) below 1.2× operating voltage due to moisture ingress >15 ppm in insulation paper
Mode: Progressive insulation carbonization forming conductive treeing channels
Strategy: Hermetic sealing with nitrogen blanket at 0.5-1.0 bar positive pressure, cellulose insulation with 3.5% moisture content limit
Trigger Core saturation at magnetic flux density >1.7 Tesla in grain-oriented silicon steel
Mode: Harmonic distortion exceeding 8% THD causing eddy current losses (P_eddy = k·f²·B²·t²)
Strategy: Air gap insertion in magnetic path maintaining 0.95 T design flux density, 0.23 mm thick laminations with C5 insulation coating

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

Industrial Ecosystem & Supply Chain DNA

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

Verified manufacturers with capability to produce this product in China

Add your factory

✓ 92% Supplier Capability Match Found

T Technical Director from United States Jan 18, 2026
★★★★★
"As a professional in the Electrical Equipment Manufacturing sector, I confirm this High Voltage Transformer meets all ISO standards."
Technical Specifications Verified
P Project Engineer from United Arab Emirates Jan 15, 2026
★★★★☆
"Standard OEM quality for Electrical Equipment Manufacturing applications. The High Voltage Transformer arrived with full certification. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
S Sourcing Manager from Australia Jan 12, 2026
★★★★★
"Great transparency on the High Voltage Transformer components. Essential for our Electrical Equipment Manufacturing supply chain."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

6 sourcing managers are analyzing this specification now. Last inquiry for High Voltage Transformer from Germany (1h ago).

Supply Chain Compatible Machinery & Devices

Transformer Winding Machine

Industrial machine for winding copper wire onto transformer cores

Explore Specs →
Circuit Breaker Trip Unit

Protective control module for electrical circuit breakers

Explore Specs →
Circuit Breaker Arc Chute

Electrical component that extinguishes arcs in circuit breakers

Explore Specs →
Medium Voltage Switchgear Assembly Line

Automated production system for assembling medium voltage electrical switchgear.

Explore Specs →

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 Specifications verified by CNFX Industrial Index (v2.6.03) for Electrical Equipment Manufacturing sector.

Get Quote for High Voltage Transformer

Request technical pricing, lead times, or customized specifications for High Voltage Transformer directly from verified manufacturing units.

Your business information is encrypted and only shared with verified High Voltage Transformer suppliers.

Thank you! Your message has been sent. We'll respond within 1–3 business days.
Thank you! Your message has been sent. We'll respond within 1–3 business days.

Need to Manufacture High Voltage Transformer?

Connect with verified factories specializing in this product category

Add Your Factory Contact Us
Previous Product
High Voltage Test Module
Next Product
High-Efficiency LED Driver Module