What are the standards for tan delta testing?
Nov 23, 2025
| Standard Number | Standard Name / Focus | Key Application Scope / Frequency Range |
|---|---|---|
| DL/T 474.3-2006 | Field Insulation Test Guide - Dielectric Dissipation Factor (tan δ) Test | Field testing of insulation for high-voltage power equipment (e.g., in power plants, substations). |
| EN IEC 62631-2-1 | Dielectric and Resistive Properties of Solid Insulating Materials - Part 2-1: AC Methods | Determining tan δ (0.1 Hz to 10 MHz) for solid insulating materials; notes dependence on temperature, humidity, and frequency. |
| GB/T 11297.9-2015 | Test Method for Dielectric Tangent of Loss Angle of Pyroelectric Materials | Measuring tan δ (100 Hz to 100 kHz) for pyroelectric materials like specific ceramics (e.g., lead zirconate titanate) and crystals (e.g., lithium tantalate). |
| IEC 60996:1989 | Method for Verifying Accuracy of tan delta Measurements Applicable to Capacitors | Verifying the accuracy of tan delta measurements for shunt and series capacitors (rated 15 Hz to 60 Hz). |
| BS PD 6528:1990 | Method for Verifying Accuracy of tan delta Measurements Applicable to Capacitors | A British standard for verifying tan delta measurement accuracy for capacitors-9. |
| ASTM D5026-06(2014)e1 | Standard Test Method for Plastics: Dynamic Mechanical Properties: In Tension | Measures viscoelastic properties (including tan delta) of plastics and composites as a function of frequency (0.01 to 100 Hz) or temperature. |
