Document ID:	MIL-STD-202       Scroll down to access document images
Spec/Std Sheet:	301

Overview

Title:  Method 301, Dielectric Withstanding Voltage Scope:  The dielectric withstanding voltage test (also called high-potential, over potential, voltage-breakdown, or dielectric-strength test) consists of the application of a voltage higher than rated voltage for a specific time between mutually insulated portions of a component part or between insulated portions and ground. This is used to prove that the component part can operate safely at its rated voltage and withstand momentary overpotentials due to switching, surges, and other similar phenomena. Although this test is often called a voltage breakdown or dielectric-strength test, it is not intended that this test cause insulation breakdown or that it be used for detecting corona, rather, it serves to determine whether insulating materials and spacing in the component part are adequate. When a component part is faulty in these respects, application of the test voltage will result in either disruptive discharge or deterioration. Disruptive discharge is evidenced by flashover (surface discharge), sparkover (air discharge), or breakdown (puncture discharge). Deterioration due to excessive leakage currents may change electrical parameters or physical characteristics. Status:  Active Document Date:  22-OCT-2024         Next Review Due:  21-OCT-2029 FSC/Area:  59GP Doc Category:   Military Standard -Test Method Standard

Responsibilities

Lead Standardization Activity:  CC  DLA Weapons Support (Columbus)     Preparing Activity: CC  DLA Weapons Support (Columbus) Coordination:  Full   Army Custodian:  CR   US Army Combat Capabilities Development Command, C5ISR Center   Navy Custodian:  EC   Naval Information Warfare Systems Command   Air Force Custodian:  85   Air Force Life Cycle Management Center - Electronic Components, Wire and Ca   DLA Custodian:  CC   DLA Weapons Support (Columbus)

Changes to military standards or handbooks issued after August 1, 2003 are incorporated in the modified document.

Revision History

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