Igus bus cables receive 300-volt UL certificate

Energy chains

10.07.2020, 14:07

Igus bus cables receive 300-volt UL certificate

By increasing the voltage to 300 volts, users can now lay Chainflex bus cables directly next to cables with a higher voltage level. Previously, the UL testing organization required all cables with different voltage classes to be laid separately.

The 300-volt UL voltage class of the Chainflex bus cables provides design freedom in the assignment of the energy chain and thus saves costs. © Igus

Underwriters Laboratories (UL for short) is an independent organization in the USA that tests various products for their safety. The regulations with regard to fire protection are very strict. Only tested products receive the UL certificate, thus guaranteeing easy distribution of machines and systems worldwide. With regard to cables, UL stipulates that all cables with different voltage classes in a cable carrier must always be mechanically separated from each other. As a result, the design team previously had to spend a lot of time and money designing the energy chain.

In order to reduce this effort and improve the technology, Igus has now increased the 30V UL voltage to 300 volts for its Chainflex bus cables CF888, CFBUS.PVC, CF898 and CFBUS.PUR and obtained UL certification. This means that cables with the same voltage level can be laid directly next to each other. It is no longer necessary to separate the cables. "And this can reduce the chain size and the installation effort for separators," explains Rainer Rössel, Head of Chainflex Cables at Igus.

17 million double strokes in the test
The bus cables are available in four cable qualities with PVC or PUR outer sheaths. The durability of the 300-volt UL bus cables was also demonstrated in the Igus test laboratory. Here, the expert tests all its products until they fail completely. In a test with the CFBUS.PUR.049 bus cable, with a bending radius of 10.3 x d, it withstood 17 million double strokes. Thanks to the numerous test series, Igus is able to offer a 36-month guarantee on all Chainflex cables. as

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