power distribution - Siemens

13SWITCHGEARMedium Voltage Equipment38 kV GIS Metal-Clad Switchgear General/SpecificationsGISTypes 8DA10 and 8DB10 MediumVoltage Gas-Insulated Switchgear aregas insulated, vacuum circuit breakerdesigns with a voltage range of 4.16kVto 38kV. Lightning impulse withstandvoltage ratings up to 200kV BIL andinterrupting ratings up to 40kA areavailable.The 8DA10 and 8DB10 Medium VoltageGas-Insulated Switchgear designsfeature fixed-mounted vacuum circuitbreakers, connectable to the main busthrough three-position (closed-openreadyto ground) switches. The positionof the switches is externally observablefrom the front of the unit using aconvenient camera system. MediumVoltage Gas-Insulated Switchgear issuitable for systems where small size,arc resistance, environmental immunity,or reduced maintenance needs areimportant. Depending upon the voltagerating, Medium Voltage Gas-InsulatedSwitchgear is approximately 1/5 thesize of conventional air insulatedswitchgear.MV Vacuum Interrupter GISThe 8DA and 8DB – up to 38kV, 2500A,40kA, 200kV BIL.▪ Inherently arc-resistant▪ Significantly reduced P.P.E. needs▪ Compact – 80% smaller than airinsulated switchgear▪ 20 year internal maintenance cycle▪ Meets IEEE and IEC standards▪ UL or C-UL Listing available▪ Single phase design eliminates phaseto-phasefaults▪ Meets NEC visible disconnectrequirement▪ Well suited for contaminatedenvironments▪ Pair with Siemens Protective Relaysto match any applicationGIS Specification SheetRated Values8DA10 3-pole / 8DB10 3-poleVoltage Max. kV 15 27 38Frequency kV 60 Hz 60 Hz 60 HzShort-dur. power-frequency withstand voltage kV 36 60 80Lightning impulse withstand voltage kV 95 125 170; 200*Short-circuit breaking current up to 40kA up to 40kA up to 40kAShort-time withstand current, 3s up to 40kA up to 40kA up to 40kAShort-circuit making current (peak) up to 104kA up to 104kA up to 104kAPeak withstand current up to 104kA up to 104kA up to 104kANormal current of busbar up to 4000A up to 4000A up to 4000ANormal current of feeders up to 2500A up to 2500A up to 2500A* On request. Consult factory8DA Dimensions8DB DimensionsBus2Bus134"34"73"93"83"93"15" 15" 11" 13"24" 24"64"29" 29" 11" 13"105"Front view Side view Front view Side view13-16Siemens Power Distribution & Control, SPEEDFAX 2007-2008 Product Catalog