Author: Weschler Instruments

Crompton Current Transformers

How to Select a Current Transformer for Metering Applications

Current transformers (CTs) are used in many applications that require current, power or energy monitoring. Examples include power generation, submetering, protective relaying, motor control, and machine fault detection. Selecting a current transformer involves picking the style, ratio, burden, accuracy and insulation to (more...)

Outlet Fire

The Critical Role of Electrical Fault Detection

Electrical fault detection is the process of identifying failures in an electrical system. These failures can range from minor disruptions to catastrophic events that damage equipment and injure people. Early and accurate detection is essential to minimize consequences and speed recovery. (more...)

An Essential Guide to Analog Meters

Why Analog Meters Remain Relevant in Industry Today.
An analog meter is an electromechanical instrument that displays electrical quantities—such as voltage, current, or power—using a physical pointer that moves across a calibrated scale. Unlike digital meters that show numerical values, analog meters provide continuous visual feedback through needle movement. (more...)

Insulation Testing: Megohmmeter or Hipot Tester

Insulation Testing: Megohmmeter or Hipot Tester

Use a megohmmeter to measure insulation resistance in the field (non-destructive, trend monitoring). Use a hipot (dielectric withstand) tester to verify insulation breakdown thresholds in manufacturing or safety tests. Choose based on your use case, voltage needs, and test objectives. (more...)

DMM

Common Mistakes When Using a DMM

The digital multimeter is one of the most widely used test instruments. A handheld DMM typically has 3½ or 4½ digit resolution and at least 3, but sometimes more than 10 functions (DCV, ACV, Ω, DCA, ACA, Hz, duty cycle, capacitance, continuity, diode test, etc). Newer meters include many features to increase safety, (more...)