Prisma Plus LV Switchboards - POWERLAB

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StandardsSystem GStandardsTools for quality assuranceCharacteristicsThe different types of standardsThere are different types of standards, including:b management standardsb installation standardsb product standards.DD381775DD381776Management standardsISO 9004: Quality management system - guidelines for performance improvement.Used in setting up quality management systems.ISO 9001: Quality management system - requirements. Used for certification audits.DD381777Design and manufacture.Switchgear devices.DD381778Switchgear assemblies.Installation.ISO 14004: Environmental management system - major guidelines on the principles.Systems and techniques implemented.ISO 14001: Environmental management system - specification with guidance foruse.A majority of Schneider Electric development centres and factories are certified ISO9001 and ISO 14001.Installation standardsThe set of IEC 60364-X standards defines the main principles and rules on:b assessment of general characteristics of installationsb protectionb selection and erection of equipmentb verification and maintenance of installations.Product standardsThey apply to <strong>LV</strong> switchgear devices or <strong>LV</strong> switchgear assemblies, where thepurpose is to ensure the correct operation and safety of the concerned products.b standards on switchgear devices:v IEC 60947-1: general rulesv IEC 60947-2: circuit breakersv IEC 60947-3: switches and disconnectorsv IEC 60947-4: contactorsv IEC 62208 / EN 50298: empty enclosures.b standards on switchgear assemblies:v IEC 60439-1: general rulesv IEC 60439-2: busbar trunking systemsv IEC 60439-3: distribution boardsv IEC 60439-4: assemblies for construction sitesv IEC 60439-5: power distribution in networks.RegulationsThe regulations in a given country may make certain standards legally binding andmay also create additional safety requirements.Quality assuranceIn addition to providing proof of the conformity of its quality management system, aproduct manufacturer can demonstrate the quality of products by providing proof thattheir design and manufacture comply with the requirements in the applicablestandard.Proof of conformity may be a declaration by the manufacturer or a certificate suppliedby an independent organisation.147
Standards Standard IEC 60439-1System GCharacteristicsAll elements making up the electrical switchboard are concerned.The object of standard IEC 60439-1 is to lay down the definitions and to state theservice conditions, construction requirements, technical characteristics and tests forlow-voltage switchgear and controlgear assemblies (U < 1000 V).The standard defines a low-voltage switchgear and controlgear assembly (theelectrical switchboard) as "a combination of one or more low-voltage switchingdevices together with associated control, measuring, signalling, protective,regulating equipment, etc., completely assembled under the responsibility of themanufacturer with all the internal electrical and mechanical inter-connections andstructural parts".Standard IEC 60439-1 defines tenmandatory testsThe seven type testsThree routine testsThese tests ensure the conformity of the electrical switchboard and are intended tocheck switchboard characteristics.b seven type tests are carried out on typical configurationsb three routine tests are carried out on the completely finished switchboard. Theirpurpose is the check that the characteristics validated by the type tests were notaltered during the manufacturing operations.1 - Temperature-rise limitsThe incoming circuit is loaded to its rated current and each outgoing circuit is loadedwith its rated current multiplied by the rated diversity factor. Once the temperaturehas stabilised, the temperature rise must not exceed the permissible temperaturesfor materials or risk causing burns.2 - Dielectric propertiesThe test voltage is applied between all live parts and the interconnected exposedconductive parts, as well as between each pole and all the other poles connected forthis test to the interconnected exposed conductive parts.b up to 3500 V, 50 Hzb 4 to 12 kV impulse voltage depending on the rated characteristics.3 - Short-circuit withstand strengthIn the event of a short-circuit, whether inside or outside the switchboard, the lattermust handle the resulting stresses (temperature rise, attraction or repulsion forcesexerted on conductors, etc.).The capacity to handle the stresses is above all the means to avoid danger (breakingand projection of components, electric arcs and their propagation outside theswitchboard).However, it is also the means to ensure a rapid return to operation after the incident.4 - Effectiveness of the protective circuitThe effectiveness of the protective circuit is checked by two tests:b short-circuit strength between the protective conductor and the nearest phaseb verification, employing a resistance measuring instrument, of the effectiveconnection between the exposed conductive parts of the assembly and the protectivecircuit.5 - Clearances and creepage distancesThe minimum clearance in air is a function of the impulse withstand voltage and thedegree of pollution in the switchboard.The minimum creepage distance is a function of the rated insulation level, the degreeof pollution and the material group of the insulating material separating the live parts.6 - Mechanical operationSatisfactory mechanical operation is verified after installation in the assembly.The number of operating cycles for the test is 50.This test is required for the locking mechanisms, for example.7 - Degree of protectionThe tests carried out determine the capacity of the switchboard to:b protect people against access to dangerous partsb protect devices against the penetration of foreign objects and liquids.1 - Inspection of the assembly2 - Dielectric test3 - Checking of protective measures and of the electricalcontinuity of the protective circuits.148
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CatalogueG SystemPack, wall mount a
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IndexCat. no Designation Pages Cat.
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General presentationSystem GPrisma
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EnclosuresSystem GPack wall-mount e
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DD381806EnclosuresSystem GCatalogue
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EnclosuresSystem GPack wall-mount e
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General presentationSystem GElectri
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General presentationSystem GExample
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DD380586DD380585Functional unitsSys
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DD380594Functional unitsSystem GCat
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Functional unitsSystem GInterpact I
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esetOOFFONIFunctional unitsSystem G
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Functional unitsSystem GFupact INFH
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Functional unitsSystem GIndustrial
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Functional unitsSystem GOther devic
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Functional unitsSystem GSwitchboard
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Page 128 and 129: DistributionSystem GCable runningTr
Page 130 and 131: Functional unitsSystem GFront plate
Page 132 and 133: EnclosuresSystem GAir-conditioning
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Prisma Plus LV Switchboards - POWERLAB

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