Latest Electrical Testing & Maintenance Articles

Electric Motor Testing Explained

Electric motor testing evaluates performance, insulation resistance, power quality, vibration, efficiency, and overall reliability. These tests detect faults early, prevent costly downtime, and support predictive maintenance for industrial power systems.   Electric Motor Testing Explained: What You Need to Know Why Motor Testing Matters Electric motor testing is often the first thing sacrificed when cutting back on operational expenses. However, smart companies recognize that skipping this step leads to billions of dollars in lost revenue due to increased repair costs, downtime, and wasted resources. Modern maintenance practices sometimes overlook the importance of thorough motor diagnostics; however, examination remains essential for…
View more

Sign Up for Electricity Forum’s Electrical Testing & Maintenance Newsletter

Stay informed with our FREE Electrical Testing & Maintenance Newsletter — get the latest news, breakthrough technologies, and expert insights, delivered straight to your inbox.

Insulation Resistance Tester For Electrical Maintenance

An insulation resistance tester measures the electrical resistance of insulating materials in cables, motors, and equipment. It helps detect insulation breakdown, leakage currents, and moisture intrusion, ensuring electrical safety, equipment longevity, and compliance with industry testing standards.   Understanding How an Insulation Resistance Tester Works It is a crucial tool in electrical maintenance, used to evaluate the quality of dielectric in various systems. It measures how well the insulation prevents the flow of electrical current, helping to identify potential weaknesses or faults that could lead to equipment failure. Let's explore how these testers work, what features to consider when choosing…
View more

Electrical Insulation Resistance Test Explained

An electrical insulation resistance test measures the effectiveness of electrical insulation in resisting current flow. It helps detect degradation, moisture, or contamination in wiring, motors, and cables to prevent faults, ensure safety, and maintain equipment performance in industrial and commercial systems.   Electrical Insulation Resistance Test Explained Visit Our Electrical Troubleshooting Training Course This test helps identify weaknesses in the insulation that can lead to equipment failure or dangerous faults. With around 80% of maintenance and testing involving evaluating the integrity of insulation, this analysis plays a critical role in maintaining system reliability. In this article, we will explore the…
View more

Data Logger Explained

Data logger for electrical engineering applications, enabling data acquisition from sensors, high-resolution measurement, time-series recording, telemetry, calibration, and IoT monitoring for power quality, energy metering, equipment diagnostics, and load profiling.   Data Logger Overview and Best Practices A data logger (or sometimes called a "datalogger") is a specialized electronic device that measures and records specific data over a certain period of time or in relation to its location either with a built-in instrument or sensor or via external instruments and sensors.Datalogging is a term used to describe using a device to collect data through a sensor. That way, the data can be analyzed and saved…
View more

Checking Insulation Resistance

Checking insulation resistance ensures safe operation of electrical systems by detecting moisture, degradation, or leakage currents. It’s essential for preventing equipment failure and maintaining high dielectric quality in cables, motors, and switchgear.   A Practical Guide to Checking Insulation Resistance Regular dielectric resistance testing is a crucial component of maintaining the integrity and safety of electrical insulation systems. This testing helps identify potential issues such as short circuits or degraded non-conductive material that could lead to failures. By performing these tests as part of a preventive maintenance routine, facilities can ensure that their systems operate efficiently and safely. To perform…
View more

Analog Multimeters

An analog multimeter is a manual electrical measuring tool that uses a needle display to test voltage, current, and resistance. It’s ideal for detecting gradual changes in readings and is commonly used for troubleshooting, continuity checks, and battery testing.   Principles of Analog Multimeters Analog multimeters use a needle to indicate a reading along a scale. Switched-range analog multimeters are very affordable but can be difficult for beginners to read accurately, especially on resistance scales. Each type of meter has its advantages. An analog multimeter is often used to measure voltage levels in circuits where rapid fluctuations are visible on…
View more

How to Use a Digital Multimeter

Digital multimeters are used to measure AC and DC voltage, current, and resistance, check continuity, select measurement ranges, and troubleshoot electrical circuits safely and accurately in real-world applications.   Understanding Digital Multimeters Digital multimeters are indispensable tools in electrical work, not because they are complex, but because they allow problems to be isolated quickly when used with judgment. With a wiring diagram and a basic understanding of what the meter is telling you, most faults can be narrowed down without guesswork. The key is not just knowing which function to select, but understanding how the meter interacts with the circuit…
View more

All Electrical Testing & Maintenance Articles


Download the 2026 Electrical Training Catalog

Explore 50+ live, expert-led electrical training courses –

  • Interactive
  • Flexible
  • CEU-cerified