Tan delta testing: A Practical Guide for Dielectric Condition Monitoring
Reading the tan delta, the power factor and the dissipation factor test result, tan delta testing verifies insulation loss and the dielectric state.
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Category Blog
Blog
Transformer winding resistance test: A Practical Guide for Load Testing
Reading the direct resistance, no-load current and the rated value, transformer winding resistance test verifies winding and magnetic circuit.
Switchgear monitoring: A Practical Guide for Substation and Plant Engineers
Switchgear monitoring tracks temperature, partial discharge and sf6 density channels of a bay, catching a developing failure before it opens.
Circuit breaker with test button: Procedure, Standards and Result Interpretation
A circuit breaker with test button protects against ground faults; press the button monthly to confirm the trip and verify it against IEC 61009-1 and UL 943.
Power Tester: Selection Guide and Key Specs
A power tester proves a circuit is safe before energizing it; pick the model by the fault it must reveal, not by display size or spec-sheet length.
Ground fault locator: Selection Guide, Key Specifications and Test Setup
Locate the distance to a buried cable fault fast: a ground fault locator combines TDR, thumper and receiver to pinpoint the site before excavation.
Transformer calculator: A Practical Guide for Substation and Plant Engineers
How a transformer calculator turns connected load into a kVA rating, full-load current, conductor size and protection setting — and how to check the answer.
Underground Cable Fault Locator Types and Features: Selection Guide, Key Specifications and Test Setup
A field guide to underground cable fault locator types and features: LV pulse, pulse current and multiple pulse modes, accuracy, blind zone and field setup.
Digital multimeter for electricians: Selection Guide, Key Specifications and Test Setup
How to specify a digital multimeter for electricians: the four jobs, CAT III and CAT IV ratings, 7-function labels, accuracy formulas and test setup.
Multimeter with true rms: Selection Guide, Key Specifications and Test Setup
How to specify a multimeter with true rms: what the claim promises, AC bandwidth and crest-factor limits, clamp sensors and how to prove the reading on site.