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3M Glass Cloth Electrical Tape 79

  • Product code: 79
  • Manufacturer: 3M
  • Package size:
  • Shelf Life: 5 years

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3M Glass Cloth Electrical Tape 79 is a 7-mil woven insulating glass cloth tape with an acrylic pressure-sensitive adhesive. This tape is used to electrically insulate and provide mechanical protection at temperatures to 311°F/155°C. This tape provides insulation and solvent-resistant protection for use as coil cover, anchor, banding and core, layer and crossover insulation. It is edge-tear resistant, conformable and printable. It also features an excellent absorption of resin and varnishes.

APPLICATIONS:

  • Used in a variety of coil/transformer and motor applications, including an outer wrap for bobbin wound coils, banding arbor wound coils, lead pad hold down, end turn and lead anchor and connection
  • Used for banding and strapping applications up to 155°C.

Physical:

Property (Test Method)
(ASTM D1000 unless noted)		 Typical Value
US units (metric)
Color White
Adhesive Acrylic
Backing Thickness 5.0 mils (0,127 mm)
Total Thickness 7.0 mils (0,177 mm)
Elongation (% at break) 5%
Operating Temperature 155°C
Adhesion to Steel 30 oz/in (3,3 N/10 mm)
UL 510 Flame Retardant No

Electrical:

Property (Test Method)
(ASTM D1000 unless noted)		 Typical Value
US units (metric)
Dielectric Breakdown 3000 V
Breaking Strength 150 lbs/in (262 N/10 mm)
Insulation Resistance 2.7 x 102 megohms
CTI Material Group 1
Electrolytic Corrosion Factor 0.9

 

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