ASTM F496 PDF

Gloves and sleeves covered under this specification are designated as type I or type II; class 00, class 0, class 1, class 2, class 3, or class 4. Type I - nonresistant to ozone, made from a high-grade cis-1,4-polyisoprene rubber compound of natural or synthetic origin, properly vulcanized, and type II - ozone resistant, made of any elastomer or combination of elastomeric compounds. The recommended sequence of inspection and testing of gloves and sleeves at an electrical testing facility are: check-in, washing, and preliminary inspection; repair; electrical test; drying; final inspection; record-keeping and marking; and powdering, pairing, and packing for storage or shipment. Electrical testing shall be performed to meet the requirements prescribed. This abstract is a brief summary of the referenced standard.

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See Guide F They may be turned inside out for 6. Inspection and Testing at an Electrical Testing Facility inside inspection, but only for the duration of the inspection.

This detailed inspection may be 6. Gloves and sleeves should be sorted by pairs and 6. Electrical Tests eliminate any folds, creases, and improper storage. After washing, the gloves and practices and test experience. It shall not exceed 6 months for sleeves shall be thoroughly rinsed with water to remove all gloves and twelve months for sleeves. Gloves or sleeves that soap or detergent and dried. Mild household type chloride have been electrically tested but not issued for service shall not bleach may be used for disinfectant purposes.

Soaps, be placed into service unless they have been electrically tested detergents, and bleaches shall not be used at strengths that within the previous twelve months. The test voltage shall be of the gloves and sleeves. NOTE 2—A commercial tumble-type washing machine may be used, but applied continuously for not less than 1 min and not more than caution must be observed to eliminate any interior surfaces or edges that 3 min.

In an automatic dryer, caution must be observed to eliminate any ozone or 7. Reliable means of de-energizing and grounding the 6. It is particularly given a preliminary inspection for punctures, tears, cuts, important to incorporate positive means of grounding the bruises, ozone cutting or checking, or any other obvious high-voltage section of dc test apparatus due to the likely conditions that would adversely affect performance. See presence of high-voltage capacitance charges at the conclusion Guide F If any of these conditions are found, the glove of the test.

Minor surface corona cutting or ozone checking in ensure that the general condition of the equipment is acceptable the gauntlet area, See Fig. Consistent ozone cutting and checking during the test 6.

No further reproductions authorized. Immerse the sleeve in water and 7. Particular care should be taken to avoid any sharp folds in the sleeves as they may cause 7. Fill the gloves, right side out, with NOTE 5—Use of this method may result in excessive breakdown failures when tested above 10 V ac or 50 V dc if the test conductive, clean water and immerse to a depth in compliance apparatus does not conform with 7.

The water level during the test shall be the same inside and outside the gloves. The pipe or rod should be of sufficient weight to hold the high-voltage source. The water should be free of air bubbles sleeve down to prevent creasing and its length should be no and air pockets inside or outside the glove and the exposed less than the width of the sleeve.

Immerse the sleeve in water portion of the glove above the water line shall be dry. If the proof test current is in and underarm edges are equidistant above the water line as excess of these limits, the glove shall be rejected. Particular care should be taken to avoid any sharp folds in the sleeves as they NOTE 4—For further details on recommended equipment and may cause premature dielectric breakdown at these points.

Seven area, the top of the underarm, and the cuff edge are all in a methods of mounting sleeves are described in the following horizontal plane, parallel to the surface of the water in the test sections, with test limitations on some of the methods. Both ac and dc proof-test procedures are included in this section. In each of the six test methods, the inner and outer electrodes shall be connected to the opposite terminals of the high-voltage source.

Electrode to electrode clearances shall be as specified in Table 3. In those cases where atmospheric conditions make the specified clearances impractical, the distance may be increased by the maximum of 51 mm 2 in.

Place a layer of high dielectric strength liquid, having a specific gravity greater than 1. Then fill the tank with water to the desired level. Immerse the sleeve, with the cuff end first, into the water until the cuff end is below the interface between the two liquids, to a depth required to provide the flashover clearance shown in Table 3.

The dielectric liquid separates and electrically insulates the inside water electrode from the outside water electrode. This mounting may be used for all voltages, both ac and dc. NOTE 6—Some dielectric liquids are toxic in nature and therefore proper precautionary measures shall be followed. One satisfactory dielec- tric liquid is trichlorotrifluoroethane Dielectric Grade. The rubber sleeve FIG. Repeated testing may result in loss of dielectric tank see Fig.

The test equipment holding or supporting the strength due to water dielectric mixing, so separation time or other means sleeve under test should be of such design that there is minimal may be needed. Care should be taken to prevent the sleeves from folding stress created in the sleeve material. Place a rod or pipe across back out of the dielectric liquid. Hanger systems may be obtained from the top surface of the sleeve at approximately the midpoint most test equipment manufacturers to facilitate the hammock mounting between the cuff and underarm edge.

The pipe or rod shall be method. This device shall provide a tight, leakproof seal at the the sleeve. Fill the sleeve with water and immerse the sleeve to cuff and a high dielectric medium to separate and electrically the test position, allowing for proper flashover clearance for the isolate the inside water electrode from the outside water test voltage used. In so far as practical, the water levels should electrode.

The sleeve to be tested is then filled with water to be the same both on the inside and outside of the sleeve, and meet the clearance requirements of Table 3.

The test arrange- the top of the shoulder area, the top of the underarm, and the ment shall provide that the sleeve stay essentially straight. This cuff edge are equidistant above the water line see Fig. Particular care shall be taken to avoid any sharp folds or areas of stress in the sleeve, as they may cause premature dielectric breakdown or ozone cutting, or both, at these points see Note 5.

For versatility in testing electrodes and masking may be used to retest sleeves as in Fig. Use a grounded plate as the table. Place a 3. This method should not be used for ac testing of thick wet sponge or wet felt in the hole as the ground contact.

Type I sleeves because of potential ozone generation. Place a second 3. Place a mm 2. This inside sponge 7. Then place the a sinusoidal wave over the upper half of the range of the test sleeve encasing the sponge in position on the wet felt or sponge voltage. Place an ozone-resistant 7. Cutouts and electrodes can be made in multiples to test voltmeter used in conjunction with a calibrated instrument more than one sleeve at a time See 7.

To ensure the continued the electrodes consist of two electrically conductive plates or accuracy of the test voltage, as indicated by the test equipment shapes, constructed to conform closely to the inside and voltmeter, calibrate the test equipment at least annually, in outside of the sleeve. Round any edges on these shapes so as to accordance with Practice D Draw the sleeve 7. It is recommended that the voltage be measured by the use of a dc meter connected in series with appropriate high-voltage-type resistors across the high-voltage circuit.

The accuracy of the voltage-measuring circuit shall be within 61 kV of the test voltage. Calibrate the test equipment at least annually, in accordance with Practice D Start the be used but returned to an electrical testing facility for test period at the instant that the prescribed testing voltage is inspection and retest. Gloves or sleeves shall not be bundled reached. Unless an electrical puncture has already by the wearer for defects.

They shall be inspected over the entire surface and defects that affect their ability to give mechanical protection to shall be rolled gently between the hands to expose defects and the insulating gloves. Care should be exercised to keep the imbedded materials. Protector gloves that become contaminated with inju- entrapped inside the glove, or by using a mechanical inflator.

The glove shall be examined for punctures and other they have been thoroughly cleansed of the contaminating defects. Puncture detection may be enhanced by listening for substance. Under twice the normal size. Type II—No part of the glove or sleeve shall be stretched more than the same conditions, Class 00 gloves may be used without 1. Other classes of gloves may be used without grease, or other damaging substances as soon as practicable. Excess water should be removed by being shaken out and the voltage exposure.

Rubber insulating gloves that have been used article then air dried. The frequency of this inspection shall be at intervals warmth in cold weather and to absorb perspiration in hot of not more than six months. The location shall be as free as adhesive tapes or labels applied to them by other than practicable from ozone, chemicals, oils, solvents, damaging authorized personnel. Gloves shall be stored in their natural shape.

Gloves shall not be used and shall be returned to an electrical testing may be kept inside of protectors or in a bag, box, or container facility for inspection and electrical retest: that is designed for and used exclusively for them.

Gloves and 8. Sleeves may be loosely rolled lengthwise inside 8. Rejection damage, except as provided in 8.

Protector dance with Section Minor surface corona cutting or ozone gloves shall not be used if they have holes, tears, or other checking in the gauntlet area, above the water line, need not be cause for rejection.

COURS FORCE ELECTROMOTRICE PDF

ASTM F496 PDF

The lab removes old stamps and dirt. Goods then dry completely before going on to a visual test that is performed by a trained inspector ASTM Properly cleaning rubber goods removes conductive and compromising dirt and oil, while allowing for the best visual inspection. Visual Inspection While rubber goods may look safe, inflation or rolling of rubber goods can reveal hidden damage. During visual inspection of gloves and sleeves, the rubber is inflated, inspected, turned inside-out, inflated and inspected once again. Blankets are carefully rolled and scanned on both sides. Line hoses are opened up and then rolled.

MANUAL DE VLSM EN ESPAOL PDF

ASTM F496-14

JoJojind This specification astm f the in-service care, inspection, testing, and use voltage of insulating gloves and sleeves for protection from electrical shock. This standard does not purport to astm f all of the safety concerns, if any, associated with its use. The recommended sequence of inspection and testing of astm f and sleeves at an electrical testing facility are: Electrical testing shall be performed to meet the requirements prescribed. Type I — nonresistant to ozone, made from a high-grade cis-1,4-polyisoprene rubber compound of natural or synthetic origin, properly vulcanized, and type II — ozone resistant, made of f elastomer or combination of elastomeric compounds. Gloves and sleeves covered under this specification are designated as type I or type II; class 00, class 0, class 1, class 2, class 3, or class 4.

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