Latest Electrical Testing & Maintenance Articles

What is Preventive Maintenance?

What Is Preventive Maintenance? A proactive approach for electrical systems using inspections, testing, lubrication, and calibration to reduce downtime, improve reliability, extend asset life, and meet NFPA 70B/IEC standards with CMMS-driven schedules and condition monitoring.   What Is Preventive Maintenance? Preventive maintenance is a crucial aspect of equipment management that offers numerous benefits, including improved reliability, reduced downtime, and better asset management. By implementing a well-structured maintenance plan and leveraging available tools and software, organizations can optimize their operations and ensure the long-term success of their equipment maintenance programs. To build organizational capability, teams can leverage targeted preventive maintenance training…
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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…
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Quickly Locate Partial Discharge (Pd) With Acoustic Imaging

Flir PD Accoustic Imaging enables ultrasonic detection of partial discharge, corona, and arcing in HV switchgear, transformers, and busbars, supporting non-contact diagnostics, condition monitoring, and predictive maintenance for electrical engineers and asset managers.   The Science Behind FLIR PD Acoustic Imaging The Customer's ChallengeFor many years utility companies have been performing partial discharge (PD) measurements on high-voltage electric equipment. PD is an indicator of insulation deterioration that can lead to equipment failures or even worse a catastrophic incident. With traditional ultrasonic solutions, the systems can be large and cumbersome and the inspection reports usually need to be analyzed by an…
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Preventive Maintenance Training: Improving Reliability

Preventive maintenance training equips electrical engineers with CMMS workflows, NFPA 70B procedures, condition monitoring, infrared thermography, power quality analysis, and arc-flash mitigation to improve reliability, reduce downtime, and extend asset life for switchgear and transformers.   Preventive Maintenance Training and Its Impact on Workplace Safety Preventive maintenance training is essential for ensuring the longevity and efficiency of equipment in various industries. This specialized training equips technicians with the knowledge and skills needed to implement effective maintenance strategies, preventing equipment failures and enhancing operational efficiency. In this article, we will explore the importance, topics covered, qualifications, career benefits, and key steps…
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How to Test a Contactor Explained

To test a contactor, check coil voltage, inspect for continuity across contacts, and verify proper operation with a multimeter. Ensure power is off before testing. These steps help identify failure in HVAC or motor circuits.   How to Test a Contactor? Visit Our Electrical Troubleshooting Training Course How to Test a Contactor is a critical procedure in diagnosing and ensuring the reliability of electrical systems, especially in air conditioning and heating applications. When they fail, they can cause system breakdowns, continuous running, or intermittent performance, which can be costly and unsafe. Testing allows electrical workers to verify its operational integrity,…
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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…
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NFPA 70B 2023: Electrical Maintenance Standard

NFPA 70B 2023 sets the standard for electrical equipment maintenance, reliability, and predictive testing. It helps facilities improve safety, reduce downtime, and extend asset life through condition-based maintenance programs.   Understanding NFPA 70B 2023 for Compliance with NFPA 70E NFPA 70B 2023 is the essential standard for electrical equipment maintenance, providing comprehensive guidelines to ensure the safety, reliability, and efficiency of electrical systems. Electrical workers must follow the guidance in NFPA 70B to prevent equipment failures, reduce downtime, and minimize the risk of electrical hazards. By adhering to this standard, workers can implement effective maintenance practices that extend the life…
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