Standards

Report on Wave Form in Dielectric Power-Factor Measurements As a result of a request of the ASA committee on insulated wires and cables, the AIEE committee on instruments and measurements appointed a subcommittee∗ to study the effect of wave form in power-factor measurements and to suggest which of the following terms should be used: form factor, deviation factor, or distortion factor. The report which follows applies to power-factor tests made on commercial electrical insulating materials and insulation of electrical equipment where such tests are required by specifications. The recommendations apply to tests made at audio and radio frequencies as well as to tests made at power frequencies. Where very accurate measurements are required, as in certain research investigations, greater restrictions on wave form and measuring equipment are necessary as indicated.