Transcription of Standard Test Methods for DC Resistance or Conductance of ...
{{id}} {{{paragraph}}}
Example: confidence
Standard Test Methods for DC Resistance or Conductance of ...
Designation: D257 07An American National StandardStandard Test Methods forDC Resistance or Conductance of Insulating Materials1 This Standard is issued under the fixed designation D257; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon ( ) indicates an editorial change since the last revision or Standard has been approved for use by agencies of the Department of Scope* These test Methods cover direct-current procedures forthe measurement of dc insulation Resistance , volume Resistance ,and surface Resistance . From such measurements and thegeometric dimensions of specimen and electrodes, both vol-ume and surface resistivity of electrical insulating materialscan be calculated, as well as the corresponding conductancesand These test Methods are not suitable for use in measuringthe electrical Resistance / Conductance of moderately conductivematerials.
3.1.7.1 Discussion—Insulation resistance is the reciprocal of insulation conductance. 3.1.8 resistance, surface, (R s), n—the ratio of the dc voltage applied to two electrodes (on the surface of a specimen) to the current between them. 3.1.8.1 Discussion—(Some volume resistance is unavoid-ably included in the actual measurement.) Surface ...
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: