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IP 295: Determination of electric strength of insulating oils
- Method adopted/last revised: 1983
- Method reapproved: 2005
- REF/ISBN: IP295-2935231
- Status: Current
- First printed in STM books: January 1983
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Scope
This method gives a measure of the electrical insulating properties of oils and enables this property to be expressed numerically as the mean breakdown voltage under the specified test conditions. It is designed essentially for new oils and its application is restricted to oils having a viscosity of not more than 50 centistokes at 20 °C.
NOTE 1: IP 295 can be used for new and used oils. It is included in numerous national specifications. IP 295 is a `breakdown' test. Users requiring a `hold' type test should refer to the Electric Strength Test in BS 5730 Code of Practice for Maintenance of Insulating Oil.
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