1. Purpose
This test method evaluates the physical and mechanical properties of Anyang cables to confirm the retention of critical impact resistance qualifications at low temperatures when subjected to a free-fall impact force. The testing validates compliance with Anyang's Mechanical Resistance Cable Attributes, relevant Industry Test standards, and Safety Agency requirements.
2. Methodology
Finished cable samples are cut to a specified length and straightened. The prepared specimens are then conditioned in a cold storage chamber at a defined sub-ambient temperature for a prescribed duration. Concurrently, the support anvil of the impact tester is conditioned to the same low-temperature environment for an identical period.
Following the conditioning phase, specimens are individually and sequentially removed from the chamber and immediately positioned on the pre-cooled support anvil. Each specimen is then impacted by a free-falling weight (tup) dropped from a specified height.
After all conditioned samples have been impacted, they are allowed to stabilize at ambient temperature for a defined recovery period. Each specimen subsequently undergoes a visual inspection to identify any cracking, splitting, or other damage to the outer jacket and underlying insulation.
3. Data Analysis
Test outcomes are electronically compared against established standard acceptance criteria to eliminate potential subjective error and ensure analytical accuracy.
4. Compliance Standards
1. Purpose
This test evaluates the physical and mechanical properties of Anyang wires and cables to ensure critical low-temperature flexibility qualifications are maintained when subjected to bending under controlled conditions. Testing is conducted to validate compliance with Anyang Mechanical Resistance Cable Attributes, applicable Industry Test standards, and Safety Agency requirements.
2. Methodology
Wire or cable samples are cut to a specified length and straightened to eliminate pre-existing curvature. Prepared specimens are placed in a mechanical cold chamber and conditioned at a defined sub-ambient temperature for a predetermined duration. A mandrel of appropriate size is simultaneously conditioned under identical temperature and time parameters.
Upon completion of low-temperature conditioning, specimens are individually removed and wound around the circumference of the mandrel for a specified number of turns. After all conditioned samples have been bent, they are allowed to stabilize at ambient temperature for a defined recovery period.
Each specimen is subsequently visually examined for signs of cracking, splitting, or other damage to the outer jacket and insulation layers.
3. Data Analysis
Test results are electronically evaluated against established standard acceptance criteria to eliminate potential subjective error and ensure analytical accuracy.
4. Compliance Standards
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