Why Is Partial Discharge the Silent Killer of High-Voltage Equipment?
Partial discharge (PD) is the “silent killer” of high-voltage equipment because it causes localized electrical...
May 2026
What Is Tan Delta Test and How Does It Detect Insulation Aging?
The tan delta test (also called dissipation factor test) measures dielectric loss in insulation by...
How to Perform a Megger Test on Electrical Insulation: Procedures & Compliance Standards
A megger test measures insulation resistance using a high-voltage ohmmeter to detect degradation in electrical...
Insulation Testers Guide: How to Choose the Right Insulation Tester
Insulation testers are essential tools for electricians, power engineers, and maintenance technicians who need to...
How to Perform Safe Dielectric Withstand Testing with Hipot Precautions?
Dielectric withstand test (also called hipot testing) applies high voltage (e.g., up to 100kV with...
How to Test Oxygen Sensor with Multimeter: Step-by-Step Guide
Testing an oxygen sensor with a multimeter helps diagnose issues like poor fuel economy, rough...
How to Measure Current in a Circuit: Complete Step-by-Step Guide
Measuring current in a circuit is essential for troubleshooting electronics, verifying power usage, and ensuring...
How to Test Protection Relays Using Simulated Fault Current Injection?
Protection relays are verified via secondary injection testing: Connect a 6-phase relay tester like HV...
How Does Portable CT Analyzer Field Testing Ensure Billing and Protection Accuracy?
Portable CT analyzers ensure billing and protection accuracy by verifying CT ratio, polarity, and excitation...
What Is the Best OLTC Testing Equipment for Mechanical Action and Transition Resistance?
The best OLTC testing equipment for mechanical action analysis and transition resistance measurement combines 200A...