In today’s rapidly evolving power sector, reliability is more than a goal — it is a necessity. High-voltage (HV) cable systems are the backbone of transmission and distribution networks, and their accessories are critical to ensuring long-term stability. Among these, 66 kV outdoor terminations are especially significant, as they must endure harsh environments while maintaining consistent performance.

At COMPAQ International, we know that designing world-class products is only the start. True reliability is proven in the laboratory, where every termination, joint, and cable accessory undergoes rigorous testing under the most demanding conditions.

What Is Partial Discharge (PD) Testing and Why It Matters?

Partial Discharge (PD) testing is one of the most important diagnostic tools for assessing the quality and reliability of HV accessories. PDs are localized dielectric breakdowns that occur in voids, gaps, or imperfections within insulation systems. Although they may appear minor, they are early indicators of insulation weakness or failure.

A termination that successfully passes PD testing gives you:

• A longer service life, by eliminating hidden weak points

• Enhanced operational safety for utilities, contractors, and end users

• Greater network reliability even under continuous electrical and environmental stresses

By investing in in-house PD testing facilities, COMPAQ offers utilities the confidence that each product is validated for long-term performance before it reaches the field. This transparency reinforces our credibility and trustworthiness.

Inside COMPAQ’s High-Voltage Laboratory

Our state-of-the-art HV laboratory is built to replicate real-world operating conditions for voltages up to 66 kV and beyond. The image above shows one of our 66 kV outdoor terminations undergoing PD testing- a vital part of our quality assurance.

Key capabilities of the COMPAQ HV Lab include:

• High-sensitivity Partial Discharge measurement

• AC/DC withstand testing for medium- and high-voltage cable systems

• Environmental stress simulations (humidity, contamination, temperature cycles)

• Impulse voltage testing for transient resilience

This facility is not just a lab — it is the foundation of our commitment to reliability, safety, and trust.

 Why COMPAQ’s Approach Stands Out

Many manufacturers rely on external testing to validate performance. At COMPAQ, we believe in going further:

This holistic approach ensures that our products are not only fit for today’s networks but also for the evolving challenges of tomorrow.

 Reliability in Every Connection

As global power networks adopt underground cabling, renewable integration, and grid modernization, the importance of tested and proven accessories cannot be overstated. Even a single termination failure can lead to outages, reputational risk, and costly operational delays.

That is why at COMPAQ International, we adhere firmly to one principle:

“Reliability isn’t designed on paper. It is tested, proven, and delivered.”

The 66 kV outdoor termination PD testing at COMPAQ’s HV Laboratory is more than a technical milestone — it underscores our unwavering commitment to quality, safety, and trust. By combining advanced testing capabilities with decades of domain expertise, COMPAQ ensures that every product meets the highest reliability standards.

As the world accelerates toward sustainable and resilient power networks, COMPAQ remains dedicated to delivering tested assurance in every connection.

For further details about our solutions, you may contact us at info@compaqinternational.com.

Frequently Asked Questions

1. What is Partial Discharge (PD) in cable terminations?
   Partial Discharge (PD) is a localized dielectric breakdown within the insulation system (in voids, gaps, or flaws) that does not fully bridge conductors. Over time, sustained PD can degrade insulation and lead to failure.
2. Why is PD testing essential for 66 kV outdoor terminations?
   PD testing reveals hidden defects or weak zones before they cause failures. For 66 kV outdoor terminations, it ensures insulation integrity under high stress, enhancing lifetime and operational safety.
3. What types of tests are performed in COMPAQ’s HV laboratory besides PD testing?
   In COMPAQ’s laboratory, we perform AC/DC withstand testing, impulse voltage testing, environmental stress tests (humidity, contamination, temperature cycling), and accelerated aging simulations.
4. How does in-house testing improve product reliability credibly?
   In-house testing increases transparency, reduces reliance on third-party labs, allows iterative improvement from test feedback, and demonstrates direct accountability — all enhancing trust and authority.
5. Which standards and benchmarks guide COMPAQ’s testing procedures?
   COMPAQ products are designed and tested to comply with international standards such as IEC and IEEE. Testing methods align with global benchmarks in insulation, PD tolerance, and environmental resilience.
6. How can utilities or contractors verify a termination’s PD results?
   We provide test reports, measurement logs, and traceable calibration data. Clients may also conduct independent PD verification tests in the field or engage third-party auditors.
7. What maintenance practices help preserve termination reliability?
   Scheduled inspections, PD re-measurements, environmental monitoring (e.g. humidity, contamination), and prompt sealing or maintenance actions contribute to long-term reliability.