Insulation resistance, high-voltage withstand and conductor resistance.
QUALITY CONTROL
Testing that supports consistent cable production
Selcoplast’s laboratory procedures cover electrical, thermal, dimensional and marking checks used to verify key cable characteristics during production.
FACTORY LABORATORY
Six documented verification stages
Insulation resistance, heat resistance, high-voltage withstand, insulation thickness, conductor resistance and printed-marking continuity.
LABORATORY SCOPE
Verification across electrical, thermal and physical properties.
The documented Selcoplast laboratory procedures focus on measurements that directly affect cable performance and manufacturing consistency. Each procedure below keeps the original technical meaning while presenting the method and acceptance point more clearly.
Heat-resistance checks after controlled oven exposure.
Outer-diameter and insulation-thickness measurements.
Verification of spacing between repeated printed signs.
DOCUMENTED PROCEDURES
Six key laboratory checks.
Open any photograph for a larger view. The procedures below are based on Selcoplast’s existing laboratory documentation.
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01
ELECTRICAL
Insulation Resistance
- Use a 5 m sample immersed in water at 70 °C for two hours.
- Measure insulation resistance between one end of the sample and the water after one minute at 500 V.
- The measured value should not be below the stated IEC 60227 requirement.
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02
THERMAL
Heat Resistance
- Wind the sample around a cylinder in small steps and place it in an oven at 150 °C for one hour.
- Allow the sample to return to room temperature before inspection.
- The sample passes when no cracking is observed.
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03
ELECTRICAL
High Voltage Test
- Immerse a 10 m sample in water for one hour, keeping both ends outside the water.
- Apply 2500 V between one end of the sample and the water for five minutes.
- The sample passes when no insulation breakdown occurs.
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04
DIMENSIONAL
Insulation Thickness
- Take three samples with at least one metre between sampling points.
- Measure outer diameter, then measure insulation thickness at six points on each sample.
- Use the average of the eighteen thickness readings and compare it with the applicable requirement.
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05
ELECTRICAL
Conductor Resistance
- Prepare and measure one metre of conductor using an ohmmeter.
- Correct the measured resistance to 20 °C using the temperature correction factor.
- The value should not exceed the values referenced in IEC 60228 tables 2 and 3.
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06
MARKING
Continuity of Printed Signs
- Measure from the end of one printed sign to the beginning of the next.
- The documented maximum spacing is 55 cm for sheathed cables.
- The documented maximum spacing is 27.5 cm for non-sheathed cables.
QUALITY WORKFLOW
A simple verification sequence.
01Prepare
Select and prepare the defined sample length.
02Condition
Apply the specified water, temperature or preparation condition.
03Measure
Carry out the electrical, dimensional or marking measurement.
04Verify
Compare the result with the stated acceptance requirement.
QUALITY & TECHNICAL SUPPORT
Need product documentation for a project or approval?
Open the relevant product range for technical data sheets, or contact Selcoplast with the cable construction, voltage and project requirements.