Section 2 Environmental aspects2.1 Sustainable developmentSustainability has been taken into account from the beginning of the product designincluding the pro-environmental manufacturing process, long life time, operationreliability and disposing of the protection relay.The choice of materials and the suppliers have been made according to the EU RoHSdirective (2002/95/EC). This directive limits the use of hazardous substances which arethe following:Table 1:Maximum concentration values by weight per homogeneous materialSubstance Proposed maximum concentrationLead - Pb 0.1%Mercury - Hg 0.1%Cadmium - Cd 0.01%Hexavalent Chromium Cr (VI) 0.1%Polybrominated biphenyls - PBB 0.1%Polybrominated diphenyl ethers - PBDE 0.1%Operational reliability and long life time have been assured with extensive testing duringthe design and manufacturing processes. Moreover, long life time is supported bymaintenance and repair services as well as by the availability of spare parts.Design and manufacturing have been done under a certified environmental system. Theeffectiveness of the environmental system is constantly evaluated by an external auditingbody. We follow environmental rules and regulations systematically to evaluate theireffect on our products and processes.2.2 Disposal of a protection relayDefinitions and regulations of hazardous materials are country-specific and change whenthe knowledge of materials increases. The materials used in this product are typical forelectric and electronic devices.1MAC457436-IB B Section 2Environmental aspects620 series ANSI 7Installation Manual