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PVC OUTER SHEATH
STANDARD : IEC 60502-1, BS 7655
 

 
PARTICULARS & GUARANTEES RELATING TO PVC OUTER SHEATH TYPE ST2 (IEC 60502), TYPE 9 (BS 6755)
Sl. No. Description Unit Guaranteed Particulars
 1 Tensile Strength and Elongation at break:    
  Min Tensile strength  N/mm²  12.5
  Min elongation at break  %  150
 2 Low temperature bend test:    
  Temperature at which specimen shall not crack  °C  -15 ± 2
 3 Low temperature elongation test:    
  Test temperature  °C  -15 ± 2
  Min. Elongation  %  20
 4 Low temperature Impact test:    
  Temperature at which specimen shall not crack  °C  -15 ± 2
 5 Loss of mass after ageing for 7 days at 100 ± 2 °C    
  Max. loss of mass  mg/cm²  1.5
 6 Accelerated ageing for specified period at specified temperature followed by tensile strength & elongation at break    
  Number of Days ageing    7
  Ageing Temperature  °C  100 ± 2
  Tensile Strength after ageing:    
  Min. value  N/mm²  12.5
  Max. variation  %  25
  Elongation at break after ageing:    
  Min. value  %  150
  Max. variation from unaged value  %  25
 7 Pressure test at high temperature:    
  Test temperature  °C  90 ± 2
  Max. indentation  %  50
 8 Heat Shock Test:    
  Temperature at which specimen shall not crack  °C  150 ± 3
 9 Insulation resistance constant:    
  Min. K. value at 20°C  M.Ohm.km  0.0035
 10 Flame Retardancy test (if required)    As per IEC 60332-1-2 (upon request)

 






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