Catalog Nex 17.5kV metalclad-cubicle - Schneider Electric

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InstallationConnectionsPE56239Switchgear resistance to ageing in a substation depends on3 key factorsb The need for correctly made connectionsNew cold connecting technologies offer easy installation and favour durabilityin time. Their design means they can be used in polluted environments with harshatmospheres.b The impact of relative humidityThe installing of a heating element is essential in climates with high relativehumidities and significant temperature differentials.b Ventilation controlThe dimensions of air vents must be appropriate for the dissipated energyin the substation. They must only sweep across the transformer environment.Cold connected terminalsSchneider Electric’s experience has led it to favour this technology whereverpossible for optimum durability.The maximum acceptable cable cross-section for standard assemblies are:b 630 mm 2 for incomer or feeder cubicles with single-pole cables;b 400 mm 2 for incomer or feeder cubicles with three-pole cables;b 95 mm 2 for transformer protection cubicles with fuses.Access to the compartment is only possible when the earthing switch is closed.Tightening torques for cables will be attained using a dynamo wrench set to 50 mN.DE56624Dry, single core cableShort end piece, cold connectablePerformance3 to 17.5 kV - 400 A - 2500 ACross section mm 2 50 to 630 mm 2SupplierNumber of cablesCommentsall suppliers of cold connectable terminals:Silec, 3M, Pirelli, Raychem...1 to 6 per phasefor greater cross section and number of cables,please consult usDry, three core cableShort end piece, cold connectablePerformance3 to 17.5 kV - 400 A - 2500 ACross section mm 2 50 to 240 mm 2SupplierNumber of cablesCommentsall suppliers of cold connectable terminals:Silec, 3M, Pirelli, Raychem...1 to 2 per phasefor greater cross section and number of cables,please consult us19
InstallationImplementation exampleLine up switchboardDE566006006006502 feeders cubicleIF650 900 900 900Incomer cubicleIFBus couplerBCBus riserRF900 650 650 650 600Incomer cubicleIF3 feeders cubicleIF1200Civil engineering with utility space(*) Minimum dimensionsAccess to the premisesDE56601600 *2500 *3600 *1650 *20 times cable diameter *Space for MV cablesSpace for LV cables (if required)Note: for further information, refer to the civil engineering guide,user and instruction manual.20
Page 1 and 2: Medium voltage switchgearNEX 17.5 k
Page 3 and 4: PresentationNEX: versatilePE56220Fo
Page 5 and 6: PresentationNEX: Schneider Electric
Page 11 and 12: NEX 17.5 rangeDescription (cont.)Ma
Page 13 and 14: NEX 17.5 rangeDescription (cont.)PE
Page 15 and 16: NEX 17.5 rangeGeneral characteristi
Page 17 and 18: Cubicle descriptionBCBus CouplerDE5
Page 19: Cubicle descriptionVTBusbar Voltage

Catalog Nex 17.5kV metalclad-cubicle - Schneider Electric

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