Cold Properties Testing for Cables (NEK TS 606 & IEC 60092-350:2020)

Below is a detailed comparison of the cold behavior tests for cables designed for cold and Arctic climates, including relevant IEC standard references.

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📌 Test Categories: Cold Climate vs. Arctic Climate

Test Parameter	Cold Climate (-25°C)	Arctic Climate (-40°C)	Relevant IEC Standard
Cold Bend Test	-25 ± 2°C	-40 ± 2°C	IEC 60092-350:2020, Annex E
Cold Impact Test	-25 ± 2°C	-35 ± 2°C	IEC 60092-350:2020, Clause 8.10 & Annex E
Typical Environments	North Sea, cold regions	Arctic, extreme sub-zero environments	-

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📌 Detailed Explanation of IEC 60092-350:2020 Standard

The IEC 60092-350:2020 standard provides test methods for cables used in marine and offshore applications, specifically in harsh and cold environments.

1. Cold Bend Test (Annex E)

Objective:
- Evaluates the flexibility and mechanical integrity of the cable when subjected to low temperatures.
- Ensures that the cable insulation and sheath materials do not crack or break under bending stress.

Test Procedure:
1. The cable sample is conditioned at the specified temperature (-25°C or -40°C) for a minimum of 16 hours.
2. The sample is wrapped around a mandrel (the diameter is specified by the standard, depending on the cable size).
3. After bending, the sample is visually inspected for cracks, fractures, or any visible damage.

Acceptance Criteria:
- No visible cracks or mechanical failure in the insulation or sheath.

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2. Cold Impact Test (Clause 8.10 & Annex E)

Objective:
- Determines the impact resistance of the cable when exposed to mechanical shock at low temperatures.
- Ensures that the sheath and insulation do not fracture upon impact.

Test Procedure:
1. The cable is conditioned at the specified temperature (-25°C or -35°C) for minimum 16 hours.
2. A weight is dropped onto the cable from a defined height to simulate impact forces.
3. The sample is visually inspected and subjected to an electrical continuity test to check for damage.

Acceptance Criteria:
- No visible cracks in the outer sheath or insulation.
- No electrical failure in continuity tests.

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📌 Summary of Cold Properties Testing

Test	Temperature for Cold Climate (-25°C)	Temperature for Arctic Climate (-40°C)	Standard Reference
Cold Bend	-25 ± 2°C	-40 ± 2°C	IEC 60092-350:2020, Annex E
Cold Impact	-25 ± 2°C	-35 ± 2°C	IEC 60092-350:2020, Clause 8.10 & Annex E