Bosch Rexroth IndraDyn S - MKE Project Planning Manual

76/131 Bosch Rexroth AG | Electric Drivesand ControlsRexroth MKE Synchronous Motors | Project Planning ManualOperating Conditions and Application NotesZonesZone 0Zone 1Zone 2Potentially explosive areas are classified into the following zones according tothe probability with which an explosive atmosphere develops in them.The following information is based on EN 60079-14:1997and theBGBI. 1996 Part 1. If you would like to receive detailed information,please consult these documents.Zone 0 includes areas in which an explosive atmosphere, which contains amixture of air and gas, dust and mist, exists continuously, for a long-term orfrequently.Electrical equipments must only be used in zone 0, if they comply with thespecifications according to EN 50020: 1994 (intrinsic safety "1").Zone 1 contains areas in which an explosive atmosphere of gas, dust or mistcan exist occasionally.Electrical equipments must only be used in zone 1, if they are constructed forzone 0 or for one of the degrees of protection .Zone 2 contains areas in which an explosive atmosphere of gas, dust or mistis unlikely to occur. But if it occurs then in all likelihood rarely and for a shortperiod of time.Electrical equipment is permissible for use in zone 2 if it:● is designed according to the requirements for zone 0 or 1;● is specifically designed for zone 2.●Degree of ignition protection, groups and temperature classesIgnition protection classescorresponds to the requirements of a recognized standard for industrialelectrical equipment and has no ignitable hot surfaces when in undisturbedoperation.The electrical equipments for potentially explosive areas are subdivided into:The electrical equipment is designed according to the type of protection. Therequirements are stipulated in special standards.Ignition protection class Description StandardOil immersion o EN50015: 1998Pressurizing o EN50016.1995Powder filling q EN50017: 1998Pressure-resistant casing ‐{}‐‐{}‐d EN50018: 1994Increased safety e EN50019: 1994Intrinsic safety category a ia EN50020: 1994Intrinsic safety category b ib EN50020: 1994Encapsulation m EN 50028: 1987Fig.9-2:Degree of protectionElectrical equipment of these degrees of protection are certified by way of aprototype test by a neutral body.Groups ● Group I: Electrical equipment for mines susceptible to fire damp.●Group II: Electrical equipment for all potentially explosive areas, other thanmines susceptible to fire damp.