Category Technical FAQs

Learn the main medium-voltage (MV) cable testing methods including DC testing, VLF sine wave, cosine-rectangular voltage, and DAC testing. Understand when to use each method for insulation diagnosis, PD detection, and cable reliability improvement.

Discover how predictive maintenance and Industrial IoT (IIoT) help smart factories reduce downtime and save energy. Learn how predictive data analysis, sensors, and machine learning improve efficiency, reduce costs, and optimize industrial operations.

Learn what IP ratings mean for electrical test equipment and how they protect against dust, water, and harsh environments. Understand pollution degrees (PD1–PD4), IEC 61010 safety standards, and how to choose the right device for industrial and outdoor use.

Learn why power cable diagnostics are important and how PD testing, VLF testing, and tan delta analysis work together. Understand cable fault detection methods and how modern systems locate insulation failures early to improve reliability.

Learn why transformer monitoring is important for power grids and how partial discharge (PD) systems improve reliability. Discover the difference between online and offline testing, the role of sensors, and how multi-channel PD systems enhance transformer diagnostics.

Explore the main types of modern battery technologies including lead-acid, lithium-ion, flow, sodium-ion, and nickel-based batteries. Learn their advantages, disadvantages, and best applications in solar storage, EVs, and grid energy systems.

Learn what VLF (Very Low Frequency) cable testing is, how it works, and why it is widely used for power cable diagnostics. Understand its advantages over AC testing, plus how PD and Tan Delta tests improve cable health assessment and grid reliability.

Learn what partial discharge testing is in transformers and high-voltage systems, how it improves power reliability, and where it is used in GIS, cables, and rotating machines. Discover PD measurement methods and commonly used diagnostic instruments.

Learn what low resistance testing is and how Kelvin four-wire measurement works. Discover how high test current, probe setup, temperature correction, and noise reduction improve micro-ohm accuracy in electrical systems, including cables, switchgear, and circuit breakers.

Learn how an insulation tester (Megger) works, including capacitive charging current, polarization current, surface leakage, and conduction current. Understand insulation resistance measurement, Ohm’s Law, and why timing and discharge are critical for accurate electrical testing.

Explore key stationary battery technologies including lead-acid, lithium-ion, flow batteries, sodium-ion, and nickel-based systems. Learn working principles, applications, advantages, disadvantages, and why battery testing is critical for reliable grid storage and renewable energy systems.

Explore the key challenges in testing converter and rectifier transformers on-site. Learn about vector group complexity, multi-tap phase shift variation, and modern TTR-based testing solutions used to improve accuracy and reduce manual errors in field diagnostics.