The significance of wire and cable smoke density test
The smoke density of cable or fibre optic cable when burning is an important index to evaluate the burning performance of cable or fibre optic cable.In the event of fire, the low smoke characteristics of cables or fibre optic cables play an important role in ensuring the safe evacuation of all kinds of people and the normal operation of fire rescue work, in terms of public safety and reducing fire damage. Therefore, IEC61034 formulates the basic test method of cable or optical fibre cable in the event of fire smoke. IEC61034 aims to establish the test method standard for the smoke density of different wires and cables or optical fibre cables under specific conditions of combustion, and it is proposed to be composed of the following two parts.
---Part 1: Test apparatus. The purpose is to establish the requirements for the test apparatus applicable to the determination of the smoke density of cables or optical fibre cables burning under specified conditions and the procedure for qualification and approval of the test apparatus.
---Part 2: Test procedures and requirements. The purpose of this part is to establish test procedures and recommended conformity requirements for the determination of smoke density of cables or optical fibre cables burning under specified conditions.
IEC 6134 is published in two parts, which together define a method for the determination of the smoke density of cables or fibre optic cables burning under specified conditions. Users of this test method should be aware that the number of specimens and bundles of cables or fibre optic cables tested may not be representative of the actual installation.
The quality of the product can only be guaranteed if the manufacturer passes the test according to the relevant standards when the product leaves the factory.
The wire and cable smoke density tester SH5707B produced by Guangzhou Sunho is designed and manufactured according to the requirements of IEC61034 standard. Scope of application: Determine the cable or optical fibre cable in the specified fire source under the smoke produced by the testing equipment.
Control and display mode: control system composed of brand computer, LCD monitor and colour inkjet printer. Using high-resolution silicon photocells composed of optical receiver; 16-bit high-performance A/D card as the analogue-to-digital converter card; stainless steel made of alcohol combustion discs, windbreaks and combustion bracket.
