The UltraTEV® Plus² is a portable partial discharge tester designed to help engineers detect, classify, and assess partial discharge activity across a wide range of high-voltage assets. Combining multiple PD detection technologies within a single handheld device, the UltraTEV Plus² enables accurate identification of internal, surface, and corona partial discharge in switchgear, transformers, cables, and substations.

As one of the industry's most advanced handheld partial discharge testers, it delivers rapid condition assessment, helping asset owners improve reliability, reduce outage risk, and support condition-based maintenance strategies.

Learn more about the UltraTEV Plus² or explore our range of products for different needs.

What Is a Portable Partial Discharge Tester? 

A portable partial discharge tester is a handheld diagnostic device used to identify insulation defects and developing faults in high-voltage electrical assets. Portable PD testing equipment allows engineers to detect partial discharge activity during routine inspections, helping identify problems before they lead to equipment failure.

Portable partial discharge testing is commonly used for:

• switchgear inspections
• transformer condition assessment
• cable diagnostics
• substation surveys
• predictive maintenance programs

PD Expertise at the Touch of a Button

It has never been simpler to interpret what you are seeing and choose a course of action. Analytical features enable the user to distinguish between true PD and noise or interference allowing you to make better decisions while saving time and money.

Applications for the UltraTEV Plus² Portable Partial Discharge Tester

The UltraTEV Plus² is suitable for a wide range of partial discharge detection and condition assessment applications, including:

Switchgear Partial Discharge Testing

Identify insulation defects and developing failures in medium- and high-voltage switchgear before they impact reliability.

Transformer Partial Discharge Testing

Detect discharge activity associated with insulation degradation, contamination, and developing transformer faults.

Cable Partial Discharge Surveys

Assess cable systems and accessories for early signs of insulation deterioration.

Substation Condition Assessment

Perform comprehensive condition surveys across multiple asset classes using a single handheld instrument.

Electrical Asset Diagnostics

Support broader condition monitoring and asset management programmes through accurate PD detection and trending.

Benefits of the UltraTEV Plus² Portable Partial Discharge Tester 

• Use the in-built PD classification and interpretation tools to detect problems early to avoid dangerous and damaging failures and minimise network downtime/outages
• Optimise maintenance cycles and asset life through a better understanding of asset condition, comparing PD results over time to identify trends
• Increase on-site productivity by rapidly collecting key condition information in an accurate and consistent manner using Survey mode
• Detect PD in a wider range of assets with the inclusion of cable PD technology
• Highly user friendly suitable for both the PD expert and new user offering time and efficiency savings
• Detect internal, surface, and corona partial discharge with a single handheld device
• Perform fast switchgear, transformer, and cable PD surveys
• Reduce outage risk through early fault detection
• Improve condition assessment and asset management decisions
• Capture trend data for predictive maintenance programs
• Support consistent and repeatable PD testing across multiple sites
• Improve productivity with portable, lightweight testing equipment

Why Choose the UltraTEV Plus²?

The UltraTEV Plus² combines advanced diagnostic capability, multi-sensor technology, and user-friendly operation within a single portable partial discharge tester.

By helping organisations detect insulation defects earlier, improve condition assessment accuracy, and optimise maintenance planning, the UltraTEV Plus² supports safer, more reliable, and more resilient electrical networks.

Whether you're conducting routine inspections or investigating developing asset issues, the UltraTEV Plus² provides the information needed to make confident asset management decisions.

Frequently Asked Questions

What is a portable partial discharge tester?

A portable partial discharge tester is a handheld device used to detect and assess partial discharge activity in high-voltage electrical assets such as switchgear, transformers, and cables.

What assets can the UltraTEV Plus² test?

The UltraTEV Plus² can be used on switchgear, transformers, cables, substations, and other high-voltage electrical assets.

Can the UltraTEV Plus² detect different types of partial discharge?

Yes. The UltraTEV Plus² can detect and classify internal, surface, and corona partial discharge activity.

Is the UltraTEV Plus² suitable for switchgear inspections?

Yes. It is widely used for switchgear condition assessment and routine partial discharge surveys.

What is the difference between a portable PD tester and permanent PD monitoring?

A portable PD tester is used for periodic inspections and condition assessments, while permanent monitoring systems continuously monitor asset condition and provide ongoing fault detection.