Rexnord-Stephan S4 Catalogue

04-2007 3P0200-XX2. Product DescriptionCategory Type of defect Prerequisite/use1(no drives from Rexnord-Stephan) Safety in normal operation and Devices of this category:also for rare faults (two errorsl 1 G in zone 0, 1 and 2 for gasoccurring simultaneously must be l 1 D in zone 20, 21 and 22 for dusthandled)2 Safety in normal operation and Devices of this category:in case of an expected faultl 2 G in zone 1 and 2 for gasl 2 D in zone 21 and 22 for dust23 Safety in normal operation Devices of this category:3G in zone 2 for Gas3D in zone 22 for dustRexnord-Stephan gear units to Directive 94/9/EG for use in air-gas and air-dust mixture.Rexnord-Stephan has several decades of experience in the design, manufacture and use of drives in hazardousareas. With the introduction of Directive 94/9/EG, the standard series EN 13463 was issued as the basis for explosionprotection for mechanical devices.Rexnord-Stephan S4 gear units in the designs SI, SP and SK meet all requirements of category 2. Requirementsfor dust protection and gas protection were taken into account for the approval. For this reason, no distinctions aremade with respect to categories 2 and 3. Our gear units of category 2 also meet all requirements of category 3.2.5.3 Type of protection for gear unitsProtection through structural safetyEN 13463-5 (identifier "c")For this type of explosion protection, the protection is ensured through design and construction measures at thedevices as well as the experience of the manufacturer.Protection through liquid enclosureEN 13463-8 (identifier "k")Potential ignition sources inside the gear unit are rendered ineffective through complete or partial immersion in aprotective liquid (gear unit oil) or through constant wetting with a liquid film, the protective liquid can be exclusivelyintended for preventing a potential ignition source to become effective. In devices such as gear units, it also servesthe purpose of lubricating and cooling moving parts.Rexnord-Stephan gear units for category 2G and 2DGear units of category 2G can be used in zone 1 and 2 for gases and gear units of category 2D can be used inzone 21 and 22 for dust. For category 2, Rexnord-Stephan issues a certificate of conformity and certifies the following:lllThe compliance of the products with standard EN 13463 with the relevant sections.The internal manufacturing control according to Directive 94/9/EG Appendix VIIIFiling the product documentation with the notified body, TÜV NORD CERTRexnord-Stephan gear units for category 3G and 3DGear units of category 3 can be used in zone 2 for gases and zone 22 for dust. A separate certification for category3 is not issued since all devices for category 2 also meet the requirements of category 3.S15