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JB/T 7785-2007 English PDF

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JB/T 7785-2007: Low voltage motor insulation life assessment of rapid test methods (step stress method)
Status: Valid

JB/T 7785: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JB/T 7785-2007English609 Add to Cart 4 days [Need to translate] Low voltage motor insulation life assessment of rapid test methods (step stress method) Valid JB/T 7785-2007
JB/T 7785-1995English679 Add to Cart 5 days [Need to translate] (Low-voltage electrical insulation life quick test evaluation method (step stress method)) Obsolete JB/T 7785-1995

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Basic data

Standard ID JB/T 7785-2007 (JB/T7785-2007)
Description (Translated English) Low voltage motor insulation life assessment of rapid test methods (step stress method)
Sector / Industry Mechanical & Machinery Industry Standard (Recommended)
Classification of Chinese Standard K20
Classification of International Standard 29.160
Word Count Estimation 19,189
Date of Issue 2007-05-29
Date of Implementation 2007-11-01
Older Standard (superseded by this standard) JB/T 7785-1995
Quoted Standard GB 755-2000; GB/T 20133-2006
Regulation (derived from) NDRC Notice No. 32 of 2007
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the low voltage motor stator winding insulation life assessment of rapid test methods. The method uses the machine for sample temperature stepwise manner to achieve rapid test purposes, the average life expectancy of the insulation structure to obtain maximum likelihood estimates. This standard applies to run under normal conditions, a variety of heat-resistant grade of three-phase, single-phase low voltage motors, its life lognormal distribution, pending flat insulation insulation structure and benchmarks compared in the same experiment to assess the relative.

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