Knowledge

Preventive testing items for high-voltage electrical equipment

Core Preventive Test Items for High-Voltage Electrical Equipment

Apr 14, 2026

How to calibrate karl fischer titrator?

The calibration of a Karl Fischer moisture analyzer is essential for ensuring the accuracy and stability of measurement results. The following detailed steps and precautions are co

Apr 13, 2026

Pour Point VS Cloud Point

Pour Point and Cloud Point – Definitions and Differences Pour Point Definition: The pour point is the temperature at which a liquid becomes viscous during cooling, to the poi

Apr 10, 2026

What are the factors that affect surface tension?

Factors Affecting Surface Tension Material Nature The stronger the intermolecular forces, the greater the surface tension. Conversely, the weaker the intermolecular forces, the sma

Apr 09, 2026

What is a tan delta tester?

Tan Delta Tester (Dissipation Factor Tester) A tan delta tester (also known as a dissipation factor tester, DF tester, or dielectric loss tester) is a high-precision electrical ins

Mar 25, 2026

What is the flash point of hazardous chemicals?

Flammable Liquid Classification Criteria for Hazardous Chemicals According to the official response from the Ministry of Emergency Management, liquids with a flash point ≤ 60 &d

Mar 24, 2026

The influencing factors and improvement measures of zinc oxide lightning arre...

Factors Affecting Test Accuracy Several factors can influence the accuracy of testing results: Environmental Factors: Humidity, dust, and temperature fluctuations may interfere wit

Mar 19, 2026

What does partial discharge amount pC mean

Partial Discharge Capacity (pC) Partial discharge capacity (pC) refers to the amount of charge released during partial discharge phenomena in the insulation system of electrical eq

Mar 18, 2026

The difference between Procedure A and Procedure B in ASTM D93 standard

ASTM D93 Procedure A and Procedure B are two distinct test methods for determining flash point using the Pensky-Martens closed-cup tester. They differ primarily in applicable sampl

Mar 16, 2026

Purpose of Measuring Contact Resistance

Purpose of Measuring Contact Resistance 1. Equipment Safety Assessment Measuring circuit resistance helps evaluate the health status of electrical equipment. An abnormally high res

Mar 12, 2026

Inductance and Capacitance Tester Usage Precautions

In practical work, electricians often need to perform capacitance and inductance tests on high-voltage electrical equipment, which requires the use of an inductance and capacitance

Mar 10, 2026

Key Considerations for Selecting a Transformer Capacity Characteristic Tester

When selecting a transformer capacity characteristic tester, it is recommended to conduct a comprehensive evaluation based on functional configuration, technical specifications, an

Mar 09, 2026