Insulation Resistance Test Standard Pdf

Insulation resistance testing of low voltage cables in the field.

Insulation resistance test standard pdf.

Standards ieee std 43 2000 recommended practice for testing insulation resistance of rotating machines and other. Insulation resistance decreases in temperature or moisture. It is commonly used in the industry for acceptance testing prior to energizing the cable and for maintenance testing programs. Historically many field electricians use the somewhat arbitrary standard of 1 megohm per kv.

And its reasonable price makes it an excellent value. Insulation resistance testing purpose. Time resistance testing method this method is fairly independent of temperature and often. Dielectric testing and insulation resistance measurement.

Portable measurement equipment in a wide variety of fields. The international electrical testing association neta specification maintenance testing specifications for electrical power distribution equipment and. On february 19 2009 the american national standards institute approved the neta acceptance testing. Dielectric strength testing also called breakdown testing measures an insulation s ability to withstand a medium duration voltage surge without sparkover occurring.

Insulation resistance testing is a non destructive test procedure. The test measures the insu lation resistance between the phases and or between phase and ground. See the site fixed equipment for measurement and testing of electrical networks energy management and optimization systems. Testing and inspection environmental measurements laboratory instrumentation power and energy.

Also acceptable values of insulation resistance depend upon the equipment you re testing. The document uses the standard numbering system of ansi and ieee. Power cables with extruded insulation and their accessories for rated voltages from 1 kv um 1 2 kv up to 30 kv um 36 kv part 1. Quickly perform advanced insulation resistance testing.

With a little record keeping and common sense however you can get a good picture of the insulation condition from values that are only relative. In reality this voltage surge may be due to lightning or the induction caused by a fault on a. Since 1989 revised editions of the acceptance testing specifications have been published in 1991 1995 1999 2003 and 2007.