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Subject: hi- potential bel.usg. Installation and removal of fuses on de-energized switch/fuse with exposed energized bus above 1000 V4.Repair work to de- energized electrical equipment within the ESHD of exposed and energized electrical equipment between 300 V to 1000 V. SWP and Energized Electrical Work Permit SWP and a written procedure (see requirement #4) An operating procedure used by authorized operating procedure user Hard hat and eye protection as required by permit or procedure Electrical insulated rubber gloves1,3 (See EWP-22) Other rubber insulated equipment (See EWP-22) as required by SWP or procedure B Repair work to exposed and energized electrical equipment between 50 to 300 V. Repair work to de- energized electrical equipment within the ESHD of exposed and energized electrical equipment between 50 to 300 V. Diagnostic work on or within the ESHD of exposed and energized electrical equipment between 300 to 1000 V. Initial installation and removal of Temporary Grounds (TGs) Voltage-rated tools or approved voltmeter/leads2,3 C Diagnostic work on or within the ESHD of exposed and energized electrical equipment between 50 to 300 V. Test for isolation and verification of de- energization between 50 to 1000 V. Hard hat and eye protection as required by procedure or permit D Testing de-energized electrical equipment, such as: Field testing, such as megohmmeter and **hi- potential** Bench testing Application of Temporary Grounds (TGs) used for the purpose of testing. Manufacturers' requirements for test equipment and equipment being tested. A Pre Task Analysis checklist (see EWP-31 Attachment 1) This work may be exempt from the SWP standard Electrical insulated rubber gloves for voltages above 2500V, other than megger testing (See EWP-22) Electrical rubber insulating gloves must be rated for the highest system voltage within the ESHD and must be used with the appropriate leather protectors. It is permissible to use the Class 0 and the Class 00 rubber insulating glove without the leather protector only if high finger dexterity is needed for the handling of small parts and there is no potential for the small parts to puncture, cut, tear, or otherwise damage the rubber glove permitting the part to contact the employee's bare hand. |
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link 30.11.2015 6:16 |
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