INSULATION CREPE PAPER / TUBES

  • Made entirely from high grade electrical Kraft base papers conforming to IEC-60554-3-5 (1984)

  • Totally free from conductive particles

  • Used as insulation in Distribution/ Power/ Current/ Potential transformers

  • Available in natural color and in reel form

  • Available in all roll widths as per customer requirement

  • Thickness ( Base paper ) : 1.50 Mil (0.04 mm) to 5 Mil (0.125 mm)

  • Also available - Crepe paper tubes





Typical properties of Insulation Crepe Paper
Properties Units SPECIFIED VALUES
Under IEC-60554-3-3
TYPICAL OBTAINED TEST VALUES, RBL(GSM)
60/120 60/150 100/200 100/250
Thickness Tolerance Mm Not required to conform to the tolerances on thickness and, in most cases, the thickness is governed by other specified properties, and is of less importance than are those properties. Where thickness is a property of importance (as, for example, on crepe papers that have been calendered), the nominal values and tolerances shall be as agreed between the purchaser and manufacturer. In all cases, care shall be taken when handling the paper during the sampling and testing procedures not to stretch the paper. 0.33 0.39 0.48 0.55
Hill Count Counts/
10 mm
The limits for hill count shall be as agreed between the purchaser and the manufacturer. Appropriate values for a given paper will depend upon the density and substance of the base paper, the amount of stretch and various details of the creping operation, and can vary from less than 8 to more than 20 per 10 mm. In general, the hill count will increase with decreasing paper density or substance, or with increasing elongation at break. 11 16 11 16
Extended Tensile Index(MD) Nm/g Min 39 64   66 65 68
Elongation/Stretch At Break (MD) % The elongation/Stretch at break shall be within 15% of that specified by purchaser 102 157  98  153
Moisture Content Max % 8 4.3  4.1 4.4 4.5
Ash Max 5 1 0.78 0.71 0.50 0.54
Conductivity of Aqueous Extract mS/m 10 Max 2.6 2.1 2.9 3.5
pH of Aqueous Extract   6-8 7.2 7.1 7.0  7.4
Break Down Voltage In Air In Oil KV/mm KV/mm 80% Stretched ( 10 layers) 10
22
10
23 
11
24
10
26
Oil Absorption %   51  52 24 26
Density gm/cc   0.38 0.42 0.43 0.45





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