Varnished Cambric Tapes 2510 and 2520 Data Sheet Notice: New straight weave cambric Please review the Scotch Varnished Cambric Tapes 2510 and 2520 Data Sheet carefully to ensure this product meets your application requirements. Product Description Typical Data/Physical and Electrical Properties Scotch Varnished Cambric Tapes are made from straight-cut 2510 2520 woven cotton cambric fabric. The fabric is oil primed and Color Yellow Yellow coated with a high-grade yellow electrical insulating varnish. Varnished cambric tapes are flexible, electrically insulating Surface Finish Dry Dry with adhesive and moisture resistant with a smooth finish. 2510 tape is yellow, non-adhesive coated and 7 mils thick. 2520 tape is Thickness (ASTM-D-374) 7 mils 8 mils yellow with a pressure-sensitive adhesive and 8 mils thick. Tensile Strength They are designed to perform continuously in temperatures (ASTM-D-295) 50 lbs./in. 50 lbs./in. up to 105C (220F) with excellent resistance to abrasion, puncture and cut-through. The adhesive on 2520 tape holds Adhesion to Steel the tape in position after application. (ASTM-D1000) - 13 oz./in. Excellent dielectric strength. Adhesion to Backing (ASTM-D1000) - 8 oz./in. Electrical properties are stable up to 105C. Dielectric Strength (ASTM-D-295) 800 V/mil 800 V/mil High puncture and cut-through resistance. Thermal Stability Class A Class A Varnish cambric tapes are rated for Class A (105C). Solvent Resistance Excellent Excellent Non-corrosive adhesive on 2520 tape. Adhesive holds film in position until the jacket is applied. Oil Resistance Excellent Excellent Note: TTT hhheeese ase arrreee tttyyyppiiccaall vvaalluueess aanndd sshhoouulldd nnoott bbee uusseedd ffoorr specification purposes. Applications For insulating joints requiring rapid and clean re-entry such Product Specification as motor lead and service drop connections, heavy split- bolts in raceways and bus bar insulating. Use in areas where Scotch Varnished Cambric Tapes shall be based on straight- mechanical protection and puncture resistance is critical. cut woven cotton cambric fabric. It shall be coated to a specified thickness, with high grade yellow electrical Note: Scotch Varnished Cambric Tapes 2510 and 2520 insulating varnish producing a visibly smooth surface. should not be used as primary insulation for splicing The surface shall be free from peeling, blisters, and terminating PILC Cable. contamination and other imperfections. Finished product thickness shall be controlled to plus or minus 1 mil. Tapes Contact your 3M Electrical Markets Division must unwind freely (except adhesive backed) with no Representative for product recommendation for binding between tape layers. splicing and terminating PILC Cable. Yellow, dry-finish varnished cambric tape shall be wax- dipped to preserve electrical properties.Installation Techniques Availability Apply Scotch Varnished Cambric Tape 2510 and 2520 in Scotch Varnished Cambric Tapes 2510 and 2520 are available half-lapped layers with sufficient tension to conform to the from your local 3M authorized distributor in the following connection surface. Apply a minimum of two half-lapped standard roll sizes: layers for mechanical protection. 2510 2520 Jacket all varnished cambric applications with Scotch rubber 3/4 x 60 feet 3/4 x 60 feet and vinyl splicing tapes to provide a contamination and moisture seal. 3/4 x 36 yards 3/4 x 36 yards 1 x 36 yards 1 x 36 yards Shelf Life 1 1/2 x 36 yards 1 1/2 x 36 yards 2 x 36 yards 2 x 36 yards Scotch Varnished Cambric Tapes 2510 and 2520 have a 5-year shelf life (from date of manufacture) when stored 36 x 25 yards under the following recommended storage conditions. Store behind present stock in a clean dry place at a temperature of 70F and 40% to 50% relative humidity. Proper stock rotation is recommended. 3M and Scotch are trademarks of 3M Company. Important Notice All statements, technical information, and recommendations related to 3Ms products are based on information believed to be reliable, but the accuracy or completeness is not guaranteed. Before using this product, you must evaluate it and determine if it is suitable for your intended appli- cation. You assume all risks and liability associated with such use. Any statements related to the product which are not contained in 3Ms current publications, or any contrary statements contained on your purchase order shall have no force or effect unless expressly agreed upon, in writing, by an authorized of cer of 3M. Warranty Limited Remedy Limited Liability. This product will be free from defects in material and manufacture for a period of one (1) year from the date of purchase. 3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3Ms option, to replace or repair the 3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any loss or damage arising from this 3M product, whether direct, indirect, special, incidental or consequential regardless of the legal theory asserted. Electrical Markets Division 6801 River Place Blvd. Austin, TX 78726-9000 Printed on 50% recycled paper Litho in USA www.3M.com/electrical with 10% post-consumer 3M 2004 78-8124-4831-0-C