SCAME Chooses Self-Extinguishing and UL Certified Compounds from LATI
SCAME PARRE, an Italian manufacturer of electrical components for low-voltage systems, has chosen LATI‘s LARAMID G/30-V0HF1, a compound based on aromatic polyamide (PPA) designed to allow continuous use at temperatures well above those reachable by PA66 for its contact holders.
In case of high temperatures, standard self-extinguishing compounds may not be the best solution and other types of materials should be preferred, such as LATI’s LARAMID G/30-V0HF1, based on aromatic polyamide.
Self-extinguishing materials: the standard solutions
Many traditional electrical power transfer applications are made with compounds based on robust and versatile polymers, most notably PA66. The flame, thermal, chemical and mechanical resistance of self-extinguishing polyamide-based materials are generally very good, even over long periods of use. In some situations, however, the intensity of circulating current and the time of continuous use can put standard PA66 or PBT solutions in serious difficulty due to the temperature reached by the metal contacts when overheated by the Joule effect.
SCAME and LATI’s LARAMID G/30-V0HF1
SCAME PARRE offers contact-holder inserts specifically designed for 125 Ampere heavy duty plugs and sockets used, for example, in industrial plants, construction sites and mines.
During continuous operation, temperatures of up to 180-190°C can be reached in these connections, which is more than enough to break down technical polymers such as polyamide and polyester.
To avoid having to turn to expensive and complicated high-temperature materials such as ceramics or thermosetting resins, SCAME has opted for LATI’s LARAMID G/30-V0HF1, a compound-based on aromatic polyamide (PPA) designed to allow continuous use at temperatures well above those reachable by PA66. The resin is reinforced with 30% glass fibre to ensure the rigidity, strength and resilience required to guarantee safe use in challenging conditions, which also include extreme circumstances such as falls and violent impacts.
Self-extinguishing and UL certified
Obviously, the contact-holder must be self-extinguishing and able to withstand contact with metal parts overheated by electric current. This is no problem, given that LARAMID has a certified UL94 V0 rating at 0.75mm and a glow wire flammability index (GWFI) of 960°C for thicknesses of between 1 and 2mm, both obtained thanks to a halogen and red phosphorus free flame-retardant system.
Excellent aesthetic result
Even though it has a complex formula, which incorporates self-extinguishing additives and glass fibre, LARAMID can be processed using traditional equipment. Moreover, aesthetically, the result is excellent, enhanced by the dark brown colour chosen by SCAME for its contact holders.
Railway certification
LARAMID G/30-V0HF1 is also fully certified for use in the railway sector according to the European standard EN45545, boasting a maximum rating in R22 and R23 application categories.
Would you like to know more about LATI’s LARAMID G/30-V0HF1? Do you need advice on which material is best suited to your application? Visit www.lati.com/en/ or get in touch using the contact details below.
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