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Quality Assurance

Understanding mechanical testing for cable longevity

What is the purpose of mechanical testing? Power cables, typically installed underground, in ducts, or on overhead structures, are often subject to mechanical stresses such as tension, compression, bending, and twisting. Hence it is important that cables are put through stringent tests to ensure they can withstand the mechanical stresses that they will be subjected […]

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SS 299:2021 Updates – Fire Resistant Test Standard

In our previous Keystone Academy blog, ‘Fire resistant test standards-explained!‘. we introduced the differences among the 3 common LSZH FR test standards. In Singapore, Fire-resistant (FR) cables undergo tests given by the Singapore standard, SS 299. SS 299:2021 standards specifies the requirements of FR cables relating to characteristics required to maintain circuit integrity and the

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Flame Retardant Test Standards – Explained!

In our previous Keystone Academy blog, ‘What is the Difference Between FRT and FR Cable?’, we shared that Fire Resistant (FR) cables are fire safety products which maintain circuit integrity in the presence of fire, while Flame Retardant (FRT) cables reduce the spread of fire. This is critical so that life-saving electrical installations, such as fire

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Why Insulation Resistance (IR) Test Is Important For Your Cables

What is the purpose of cable insulation? Cable insulation is an important protective material for cable conductors. It is non-conductive, used to resist electrical leakage, prevents cable conductors from contact with other conductors, and protects the conductor from environmental threats such as heat, water, and chemicals. Poor or damaged insulation may result in short circuit,

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