Insulation Resistance
- A Five meters sample should be amerced in water of 70º C temperature for Two Hours
- Measure insulation Resistance between One end of the sample and water using Meager after One Minute of applying 500 Volts
- The measured value should not be less than the standards for IEC 60227
Heat Resistance
- Pick a sample wind around a cylinder in small steps , Put it in the Oven at 150ºc for One Hour
- After that get it out of the Oven and leave it until it reaches the room temperature
- Disassemble for testing
- The sample passes the test if there is no cracks
High Voltage Test
- A Ten meters sample should be amerced in water with it's Two ends out of water for One Hour
- Apply 2500 Volt between One end of the sample and water for Five Minutes
- The sample passes the test if there is no insulation break down
Insulation Thickness
- Pick Three samples with a distance not less than one meter in between of the cable
- Using the venire measure the outer diameter
- Get the average value of the Three samples
- Measure the insulation thickness at Six points of the Three samples
- Get the average value insulation thickness for the Eighteen reading
- Average value of insulation thickness should not be less than the standards
Conductor Resistance
- Measure One meter of the conductor after preparing it, using the Ohmmeter – the conductor resistance
- Calculate the conductor resistance at 20º C using temperature correction factor
- The value should not exceed the standard values in tables (2) and (3) for IEC 60228
Continuity of Printed Signs
The measurement of the distance between the end of one sign to the start of the next following sign should not be greater:
- 55 cm for sheathed cables
- 27.5 cm for non sheathe cables