INDUSTRY COMPONENT

High-Voltage Terminal

High-voltage terminal for voltage measurement dividers, ensuring safe and accurate electrical connections in high-voltage systems.

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Component Specifications

Definition
A high-voltage terminal is a critical electrical component designed to connect high-voltage conductors to voltage measurement dividers or other equipment. It provides a secure, insulated interface that prevents electrical arcing, corona discharge, and leakage currents, while maintaining precise voltage division ratios for measurement accuracy. Typically used in power transmission, substations, and industrial high-voltage testing setups.
Working Principle
The terminal operates by providing a low-resistance, high-integrity connection point for high-voltage conductors. It incorporates insulation materials and geometric designs (e.g., smooth surfaces, rounded edges) to control electric field distribution, minimizing stress concentrations. In voltage dividers, it ensures the input high voltage is accurately divided down to a measurable low voltage without introducing significant impedance or distortion.
Materials
Conductor: Oxygen-free high-conductivity copper or aluminum alloy, often silver-plated for enhanced conductivity and corrosion resistance. Insulation: High-dielectric-strength materials such as porcelain, epoxy resin, silicone rubber, or PTFE, rated for continuous operation at specified voltages (e.g., 10 kV to 500 kV). Housing: UV-resistant polymer or composite materials for outdoor durability.
Technical Parameters
  • IP Rating IP65 or higher for outdoor use
  • Current Rating 1-10 A (depending on design)
  • Voltage Rating Up to 300 kV AC/DC
  • Connection Type Threaded stud, clamp, or bolted
  • Temperature Range -40°C to +85°C
  • Dielectric Strength Withstands 2x rated voltage for 1 minute
  • Insulation Resistance >1000 MΩ at 500 V DC
Standards
ISO 9001, IEC 60243, IEEE 48

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for High-Voltage Terminal.

high-voltage terminal voltage divider terminal electrical connector HV terminal insulation IEC 60243 power measurement industrial electrical components High-Voltage Terminal in Electrical Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Voltage Measurement Divider

A precision electrical component used to safely measure high voltages by dividing them into lower, measurable levels.

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Engineering Analysis

Risks & Mitigation
  • Electrical arcing due to improper installation
  • Insulation degradation over time
  • Corona discharge at high voltages
  • Mechanical failure from vibration or thermal cycling
FMEA Triads
Trigger: Contamination or moisture on insulation surface
Failure: Reduced dielectric strength leading to flashover
Mitigation: Use hydrophobic coatings, regular cleaning, and design with creepage distance per IEC 60243
Trigger: Loose connection due to thermal expansion or vibration
Failure: Increased contact resistance, overheating, and potential arcing
Mitigation: Apply proper torque during installation, use lock washers, and design with spring-loaded contacts
Trigger: Material aging under UV exposure or thermal stress
Failure: Cracking or brittleness of insulation, compromising safety
Mitigation: Select UV-stable materials (e.g., HTV silicone), conduct periodic inspections, and replace per maintenance schedule

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Voltage division ratio accuracy within ±0.5% under rated conditions; insulation resistance deviation <10% from spec
Test Method
Dielectric withstand test per IEC 60243-1; partial discharge measurement per IEC 60270; thermal cycling and humidity tests per IEEE 48

Buyer Feedback

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Frequently Asked Questions

What is the primary function of a high-voltage terminal in a voltage divider?

It safely connects high-voltage input to the divider, ensuring accurate voltage division while preventing electrical hazards like arcing or insulation breakdown.

How do I select the right high-voltage terminal for my application?

Consider voltage rating, current capacity, environmental conditions (e.g., humidity, temperature), insulation material, and compliance with standards like IEC 60243.

Can high-voltage terminals be used in outdoor installations?

Yes, if designed with weather-resistant materials (e.g., silicone rubber, porcelain) and appropriate IP ratings (e.g., IP65) to withstand moisture, UV exposure, and pollution.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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