DEGI04EN - Schneider Electric

Medium Voltage DistributionCBGS-2Gas Insulated metal enclosed Switchgear52 kVCatalogue

A new path for achieving your electrical installationsA comprehensive offerThe CBGS-2 range is part of a comprehensive offer of products that are perfectlycoordinated to meet all medium and low voltage electrical distribution requirements.All of these products have been designed to work together: electrical, mechanicaland communication compatibility.The electrical installation is thus both optimised and has improved performance:@ better service continuity,@ increased personnel and equipment safety,@ guaranteed upgradeability,@ effi cient monitoring and control.You therefore have all the advantages at hand in terms of know-how and creativityfor achieving optimised, safe, upgradeable and compliant installations.Tools for facilitating the design and installationWith Schneider Electric, you have a complete range of tools to help you get to know andinstall the products whilst complying with current standards and good working practices.These tools, technical sheets and guides, design software, training courses, etc areregularly updated.Schneider Electric is associating itself withyour know-how and your creativity to produceoptimised, safe, upgradeable and compliantinstallationsFor a real partnership with youA universal solution doesn’t exist because each electrical installation is specific.The variety of combinations on offer allows you to truly customise the technical solutions.You are able to express your creativity and put your know-how to best advantagewhen designing, manufacturing and exploiting an electrical installation.

CBGS-2ContentsGeneral overviewField of application 4Main characteristics 5Functional unitsBasic description 8Configurations for single busbar 10Configurations for double busbar 12Apparatus52 kV circuit breaker 14Circuit breaker operating mechanism 153 position disconnector 17Current transformers 18Voltage transformers 19General busbar system 20InstallationPower cables 21Implementation examples 22Civil engineering 23DEGI04EN.indd3

General overviewField of applicationPE57601Power supply utilitiesPE57602WindfarmsPE57603PE57604AirportsPE57605Industrial sectorPE57606CogenerationsPE57607Traction substations mono-phase, two-phase and three-phase versionsb High speed trains (TGV)b Railwaysb Undergroundb Tramways.The technical requirements for traction substations are different from those of othertypes of installations.For this reason, CBGS-2 range is extended for this market with other versions,keeping the basic architecture of the switchgear invariable.In any case, CBGS-2 range complies with the specifications of general internationalstandards and specific standards for railways, maintaining the usual characteristicsof our switchgears, that is, reliability, safety, robustness and repairability.4 DEGI04EN.indd

General overviewMain characteristicsPE57608CBGS-2 range of switchgears has been officially approved by the main power supplyutilities as well as by the main industrial and infrastructure users. Nowadays, more than7,000 switchgears of the CBGS range have already been installed.This range of switchgears offers certain distinctive characteristics, such as thefollowing ones:b Low working pressure (0.4 relative bars)b Homogeneous architectureb High degree of partitioningb Optional gas exhaustion channel for single busbar version.Besides, the design of he CBGS-2 switchgears fully meets the basic requirementsof end users:b Investment optimizationb Service continuityb Operation safety.Investment optimizationThe switchgears of the CBGS-2 range are the best choice of investment due tothe following features:Optimization of the required space compared to other outdoor solutionsb The compact design, as well as the SF6 insulation of the switchgears, provideextremely reduced dimensions compared to traditional outdoor solutions.b An appropriate solution is thus provided for urban environments or reducedspaces.Simplified engineeringAs a result of the experience gathered in collaboration with Power Supply Utilities,Consultants and Contractors, there is a complete range of already developedsolutions which considerably simplify the engineering work.Integral management of networksFor those clients who wish to install a complete supervision system for theirswitchgears in order to improve their electrical supply, there is a full range ofprotection, control and monitoring elements suitable for CBGS-2 switchgears.Service continuityChoosing CBGS-2 switchgears provides users with the highest degree of availabilityof their MV units, thus ensuring the greatest reliability and quality when supplyingenergy to the clients of the Power Supply Utilities.Highly confirmed qualityb Proven experience in the design and manufacturing of SF6 insulated primarydistribution switchgears.b Use of 3D design techniques and other advanced tools.b Fully factory-tested equipments.Solid and safe designb CBGS-2 cubicles can neither be affected by moisture or dirt, nor by corrosive orpolluted operating environments, since all high voltage parts are contained insidethe SF6 tanks, which are made of stainless steel.b The hermetic nature of the stainless steel tanks ensures the protectionof the cubicles against external agents such as dirt, dust, insects, rodents, etc.High degree of maintenance and repairabilityb The operating mechanism of the circuit breaker is accessible from the outside ofthe stainless steel sealed tank.b The screened voltage transformers, can be plug-in type and independent fromthe stainless steel tank.b Possibility of elements replacement, such as three-phase bushings, gaskets,disconnectors, etc. without moving the affected cubicles or the adjacent ones.b Possibility of intermediate cubicles replacement without moving the adjoining ones.Extensions under voltageThe design of CBGS-2 switchgears, double busbar version, allows the extension ofa switchboard without cutting off service.Low maintenanceThere is practically no maintenance required for the operation of a CBGS-2switchboard and this is mainly focused on the operating mechanisms.DEGI04EN.indd5

General overviewMain characteristicsPE57610General electrical dataRated voltage kV 52Rated insulation levelPower frequency withstand voltage, 50 Hz KV rms 95Lightning impulse withstand voltage kV peak 250Rated normal currentBusbar system A Max. 2000Incoming/outgoing A Max. 1600 (1)Short circuit breaking current (C.B.) kA 25Short circuit making current (C.B.) kA peak 63Short time withstand current kA/s 25Internal arc withstand 1 s kA 25SF6 gas pressure at 20ºC Bar 0.40Standard degrees of protectionHV compartment IP 65LV compartmentIP 3XSpecific electrical data, monophase and two-phase versionsMonophase Two-phaseRated voltage kV 1 x 27.5 2 x 27.5BIL kV 250 250Busbar rated normal current A Max. 2500 Max. 2000Incoming/outgoing rated normal current A Max. 2000 Max. 2000 (1)The above mentioned values are given for normal operating conditions (2) according toIEC 62271-200 and IEC 62271-001 standards:b Ambient air temperaturev Less than or equal to + 40ºCv Less than or equal to + 35ºC on average over a 24 hour periodv Greater than or equal to – 5ºC.b Vibrations: lack of vibrations external to the switchgearb Altitude: less than 1000 m over the sea level (3) .Standardsb IEC 62271-1b IEC 62271-200b IEC 62271-100b IEC 62271-102.(1) For other technical requirements, please contact Schneider Electric.(2) For other operating conditions or specially aggressive environments,please contact Schneider Electric.(3) For higher altitude, please contact Schneider Electric.DEGI04EN.indd7

Functional unitsBasic description1 Low Voltage compartment2 Protection and control relays. Sepam or similar type (optional)3 General busbar system, inside a 3 mm thick stainlesssteel tank, with the appropriate three phase bushings4 SF6 gas pressure relief devices5 Two or three position disconnector (disconnector andearthing switch)6 Operating mechanism of the disconnector7 Actuating shaft for the operating handle of the operatingmechanism of the disconnector8 Pushbuttons for the electrical operating mechanism ofthe disconnector (optional)9 Disconnector indicator: open/closed10 Earth indicator: open / closed11 Metal tank (3 mm, stainless steel), sealed for life12 SF6 gas pressure relief device13 Circuit breaker14 Operating mechanism of the circuit breaker15 Actuating shaft for the operating handle of the manualspring charging16 Opening and closing pushbutton17 Mechanical pushbutton for emergency opening18 Position indicator (open/closed)19 Operation counter20 Power cables compartment21 Power cables connectors (optional) (more informationin page 21).22 Earthed power cables key lock (optional)23 Current transformers (optional)24 Socket bushing for voltage transformers, surge arrestor,etc. (optional)25 MV connection cable for voltage transformers(optional)26 Capacitive voltage indicators per phase27 Pressure gauge for SF6 pressure indication insidethe circuit breaker compartment28 Pressure gauge for SF6 pressure indication insidethe busbar cubicles (1 per each busbar system)29 Characteristics nameplate30 Pressure switchPE57614PE576154351211202325Frontal view of mechanisms panel and synoptic94356301314242111071819288162715172226292DEGI04EN.indd9

Functional unitsConfigurations for single busbarDE58942ADE58943ADE58944ADE58945ADE58946ALine switchgearwith cable disconnectorMeasuring switchgear Bus coupling Riser Lateral incomingwith disconnector52 52 52 52 521250 / 1600 / 2000 1250 / 1600 / 2000 1250 / 1600 / 2000 1250 / 1600 / 2000 1250 / 1600 / 2000630 / 1250 / 1600 — — — 630 / 1250 / 160025 / 63 25 / 63 25 / 63 25 / 63 25 / 63b b b b bb (in lateral panel) b (in lateral panel) b (in lateral panel) b (in lateral panel) b (in lateral panel)— b — v —— v — v —— v — v —b b b b v3 positions 3 positions 2 positions (3) 2 positions (3) 3 positionsb b b b vv v v v v630 / 1250 / 1600 630 / 1250 / 1600 630 / 1250 / 1600 630 / 1250 / 1600 630 / 1250 / 1600v v v v vv v v v vv v v v vv v v v vv v v v vv v v v vv v v v vb — b — —2000 — 2000 — —110 / 125 (3) — 110 / 125 (3) — —Double — Double — —v — v — —v — v — —b — — — b— — — — —3 (1) / 500 mm 2 (2) — — — 3 (1) / 500 mm 2 (2)v — — — v— — b b —— — — v —— b — v —v — — — —b b b b bv v v v vv v v v vConventional / Digital Conventional / Digital Conventional / Digital Conventional / Digital Conventional / Digitalv v v v vv v v v vv v v v vv v v v vv v v v vDEGI04EN.indd11

Functional unitsConfigurations for double busbarDE58947ABFunctionb Available functionv Optional function— Not available function.(1) In case of additional VT or surge arrester,we have 3 power cables and an auxiliary socket.(2) This section will be limited by the connector,which is size 3, 52 kV.(3) For other characteristics, please contact Schneider Electric.Rated voltage (kV) 52Busbar rated normal current (A) 1250 / 1600 / 2000Incoming/outgoing rated normal current (A) 630 / 1250 / 1600 / 2000Rated short time withstand current 3 s/1 s (kA peak) 25 / 63SF6 control pressure gauge of central cubiclebSF6 control pressure gauge of busbarsb (in lateral panel)Measuring in general busbars —Voltage transformers —Current transformers —Disconnectorb2 or 3 positions 3 positionsManual operating mechanismbMotor-operated mechanismvRated normal current 630 / 1250 / 1600Disconnector key lock in open positionvDisconnector key lock in closed positionvEarthing switch key lock in open positionvEarthing switch key lock in closed positionvEarthed cable termination key lockvElectromagnetic lock for the disconnectorvElectromagnetic lock for the earthing switchvCircuit breaker (electrically operated)bRated normal current (A) 2000Supply voltage (Vdc) 110 / 125 (3)Tripping coilDoubleCircuit breaker locking in open positionvMechanical locking for opening pushbuttonvVoltage indicatorsbPower cables and transformers bottom compartment —Maximum number of incoming/outgoing cables per phase 3 (1) / 500 mm 2 (2)Toroidal-core current transformersvBus section busbar system —Current transformers in bus section —Voltage transformers in bus section —Cable disconnectorvLow voltage compartmentbLight (lamp + micro)vProtection relay Sepam or similar typevControl type (Conventional or digital)Conventional / DigitalAuxiliary relays and devices:vSwitchvConvertervCircuit breakersvLV terminalsv12 DEGI04EN.indd

Functional unitsConfigurations for double busbarDE58948ADE58949ADE58950ADE58951ADE58952ABBBBBMeasuring switchgear Bus coupling Riser Cross coupling Lateral incomingwith disconnector52 52 52 52 521250 / 1600 / 2000 1250 / 1600 / 2000 1250 / 1600 / 2000 1250 / 1600 / 2000 1250 / 1600 / 20001250 / 1600 / 2000 1250 / 1600 / 2000 1250 / 1600 / 2000 1250 / 1600 / 2000 630 / 1250 / 160025 / 63 25 / 63 25 / 63 25 / 63 25 / 63b b b b —b (in lateral panel) b (in lateral panel) b (in lateral panel) b (in lateral panel) b (in lateral panel)b — v v —v — v — —v — v v —b b b b v3 positions 2 positions (3) 2 positions (3) 2 positions (3) 3 positionsb b b b vv v v v v630 / 1250 / 1600 630 / 1250 / 1600 630 / 1250 / 1600 630 / 1250 / 1600 630 / 1250 / 1600v v v v vv v v v vv v v v vv v v v vv v v v vv v v v vv v v v v— b — b —— 2000 — 2000 —— 110 / 125 (3) — 110 / 125 (3) —— Double — Double —— v — v —— v — v —— — — — b— — — — —— — — — 3 (1) / 500 mm 2 (2)— — — — v— b b — —— v v v —b — v — —— — — — —b b b b bv v v v vv v v v vConventional / Digital Conventional / Digital Conventional / Digital Conventional / Digital Conventional / Digitalv v v v vv v v v vv v v v vv v v v vv v v v vDEGI04EN.indd13

Apparatus52 kV circuit breakerPE55037 PE57616The circuit breakerThe circuit breaker of CBGS-2 switchgears has separate poles, is “puffer” typeand uses SF6 gas as breaking and insulating medium.The cast resin enclosure of the circuit breaker fulfils the requirements of IEC 62271-100standard regarding sealed pressure systems.The relative pressure of SF6 filling is 0.48 Mpa (4.8 bar).In the very improbable event of a pressure falling underneath the established workingthreshold, 2 alarms, (at different levels) will be automatically released.Puffer type breaking system: operating principle(1) The fixed and mobile main contacts are initially closed.(2) PrecompressionWhen the fixed and mobile contacts begin to open, the piston slightly compressesthe SF6 gas inside the pressure chamber.(3) Arcing periodThe arc strikes between the arcing contacts while the piston continues its movement.A small quantity of SF6 gas is injected onto the arc through the insulating nozzle.For the breaking of low currents, the arc is cooled by forced convection.For high currents, however, thermal expansion causes the hot gases to move towardsthe colder parts of the pole unit.The distance between the two arcing contacts becomes sufficient for the current to bebroken when it reaches the zero point, due to the dielectric properties of SF6 gas.(4) Final sweepingThe moving parts finish their movement and the injection of cold gas continues untilthe contacts are completely open.Characteristics of the circuit breaker(1) (2)(3) (4)Rated voltage 50/60 Hz kV 52Power frequency withstand kV (rms) 95voltage insulation level(50 Hz–1 min)Lightning impulse withstand kV (peak) 250voltage insulation level(1.2/50 μs)Rated normal current A 2000Short circuit breaking current kA (rms) 25Short circuit making current kA (peak) 63Short time withstand current kA (rms) 25(3 s)Capacitor breaking current A 220for rated currentRated operating sequenceO-0.3 s-CO-3 min-COApproximate operating time ms OpeningBreakingClosing35-4335-5855-6514 DEGI04EN.indd

ApparatusCircuit breaker operatingmechanismPE57618Operating mechanismThe opening and closing speed of the circuit breaker contacts used for CBGS-2switchgears is independent of the operator’s action.This electrically operated mechanism, which is always motorized, can performremote control functions and implement fast re-closing cycles.In CBGS-2 type switchgears, all the operating mechanisms are arranged outsidethe SF6 tank.Furthermore, maintenance in this type of operating mechanisms is quite reduced,as they use self-lubricating components.The operating mechanism consists of:b A spring system that stores the necessary energy for the opening and closingoperations.b A manual spring charging system.b An electrical motorized spring charging device that automatically rechargesthe springs in less than 5 seconds after the main contacts of the circuit breakerhave closed.b Mechanical opening pushbutton with optional padlock on the front panel.b Electrical system including:v Closing coilv Anti-pumping relayv Double tripping coilv Undervoltage coil (optional).b Operation counter.b A spring charging indication contact.b An end of spring charging indication contact.b Mechanical indicator for open/closed position.b Mechanical indicator for spring charging position.b An optional key lock to interlock the circuit breaker in open position.Auxiliary contactsThe operating mechanism is equipped with a block of a maximum of 15 auxiliarycontacts. The number of available contacts depends on the composition of theoperating mechanism and the options chosen. In any case, at least 3 O/C contactsare available on the switchgear outgoing LV terminal block for the external signals.Auxiliary contacts characteristicsRated current10 ABreaking capacity Alternating current voltage 10 A with 220 Vac(power factor ≥ 0.3)Direct current voltage1.5 A with 110 or 220 Vdc(L/R ≤ 0.01 s)Electrical characteristics of the operating mechanismOptionsSpring charging Closing release Double voltage Undervoltage coilmotortripping coil52 kV 52 kV 52 kV 52 kVSupply voltage Direct current V 48-110-125 VdcConsumption Direct current W 500 70 140 (2 x 70) 100/10Possible combinations of auxiliariesand quantities=orororbbbbbbbbbbbbDEGI04EN.indd15

ApparatusCircuit breaker operatingmechanismAuxiliary diagramCircuit breaker operating mechanism.The second tripping coil and the opening and blocking of the breaker by very low SF6pressure are included as a standard option.Open circuit breaker with discharged springsand gas at normal pressureM Spring charging motor52BC Closing release52Y Anti-pumping relay52BA1 Tripping coil52BA2 Second tripping coil63BL Pressure switch contact for opening63ALL Low pressure alarmY63BL Pressure switch auxiliary relay for tripping and blocking33 Switch contact for mechanical closing availability33L Switch contact for blocking of spring charging motor during manual charging operation52MC End of charging contactsPE57619DE58953Y63BLY63BL33L52Y52YQ352MC3352MC63BL 63ALL Y63BL 52MC 52MCM52BC52Y52BA1Y63BL52BA216 DEGI04EN.indd

Apparatus3 position disconnectorPE57620PE576211234561 General busbar system2 Fixed contact “disconnector closed”3 Mobile contact fingers (disconnector open)4 3 phase bushing towards circuit breaker compartment5 Joint6 Fixed contact “disconnector earthed”.Busbar1213Characteristics of the 3 position disconnectorIt complies with the requirements of IEC 62271-102 standard for disconnectorsand earthing switches.Short circuit current making capacity (disconnector and earthing switch) throughthe circuit breaker is 25 kA.Rated currents: 630 A /1250 A /1600 A.An optional cable disconnector can be installed in the rear part of the switchgear.Compact design and reduced dimensions. Highly reliable position indicator(without transmission rods).Single rotation-driving axis for the disconnector and the earthing switch.To operate the earthing switch after operating the disconnector, the operating handlemust be removed and inserted again. These are completely independent operations.Motorization of disconnectors can be included as an option (not advisable for singlebusbar version).Operation and interlocksManually operated by means of an operating handle or motor operated.The operating handle can not be removed from the actuating shaft until the switchingoperation has been completed.The circuit breaker can not be closed until the operating handle has been withdrawn(extreme positions of the disconnector).Other special key lock interlocks may be included as an option.445PE57622OutgoingDouble busbar system1 Position indicator, open / closed2 Earthing position indicator3 Actuating shafts for manual operation of disconnectors4 Pushbuttons for motorized operating mechanism ofthe disconnector (optional)5 Pushbuttons for motorized operating mechanism ofthe earthing switch (optional).DE58954EAYSYTAEMOptionsKey locks per function key released:1 Disconnector in open position2 Disconnector in closed position3 Earthing switch in open position4 Earthing switch in closed position5 Earthed cables.Electromagnetic locksYS DisconnectorYTA Earthing switch.DEGI04EN.indd17

ApparatusCurrent transformersPE57623PE57624General characteristicsb Architecture:v Type A: toroidalv Type B: flanged to SF6 tank.b Type A: free from dielectrically stressed cast resin componentsb According to IEC 60044-1 standards.Mounting possibilities and typesLocationIn cable compartmentIn SF6 tankTypeABType AType BCharacteristics tablePE57625PE57626Maximum operating voltage0.72 kVMinimum admissible AC voltage3 kV / 1 minNormal operating frequency50/60 HzThermal currentsPermanent (max. value)Normal short time (3 s)1.2 x In25 kANormal currentsDynamicPrimarySecondary25 x I. Th40 A to 1600 A1 A and 5 ASwitch possibilities in the secondary windingFrom 100 - 200 A to 800 - 1600 ACore data depending on normal primary current3 cores maximumMeasuring corePowerClassOvercurrent factor2.5 VA to 15 VA0.5 to 1FS5Protection corePowerClassOvercurrent factor2.5 VA to 30 VA5 or 10From P10 to P30Dimensions Type A Minimum MaximumInternal diameterMaximum heightDimensions Type BHeightWidthDepth60 mm130 mm548 mm420 mm243 mmOperating ambient air temperature – 5°C / + 40°CInsulation classE205 mm225 mm18 DEGI04EN.indd

ApparatusVoltage transformersPE57627PE57624General characteristicsb Inductive principleb Architecture:v Type A: plug-in type by means of MV cablev Type B: flanged to SF6 tank.b Safe to touch by means of a shielded metal enclosureb Cast resin insulatedb According to IEC 60044-2 standards.Mounting possibilities and typesType AType BLocationIn cable trench (outside of the switchgear)In SF6 tankTypeABPE57628Characteristics tableANormal Voltage (Un)> 3.6 to 52 kVNormal alternal voltage in the primary winding1.2 x UnVoltage normal factor (Un/8 h) 1.9 / 2.5 (*)Voltage in the secondary (**)100/3 V110/3 V100/3 V110/3 VThermal current limit (measuring winding)8 ANormal long duration current (8 h)5 AData according to the accuracy classClass 0.2Class 0.5Class 120, 25 and 30 VA30, 50 and 60 VA50, 60 and 100 VAB25 VA50 VA100 VA(*) 2.5 x Un Optional.(**) For other voltages, please consult Schneider Electric.PE57629DEGI04EN.indd19

ApparatusGeneral busbar systemPE57630Characteristics of the busbar systemThe busbar system is completely segregated and its continuity is achieved by meansof three phase busbar bushings.The busbar compartment is gas-tight and uses SF6 gas as insulating medium.The three position disconnector (open / closed / earthed) is located inside the busbarcompartment.In case of busbar coupling and busbar rising switchgears, the standard optionis the two position disconnector.The set consists of three independent copper conductive bars.Desiccation bags are included in the busbar tanks.Detail of the general busbar systemSwitchgears extensionA CBGS-2 switchboard can be extended in a quick and simple way on both ends ofthe busbar system. Extension under voltage is possible in case of double busbarversion. Such extensions under voltage will be carried out only in those cases whenit is absolutely necessary and there is no other choice.It is possible to remove intermediate switchgears from a switchboard without havingto move the adjacent ones.PE5763120 DEGI04EN.indd

InstallationPower cablesPE57632Straight connectors, Pfisterer or similar type, size 3, 52 kVfor incoming / outgoing cablesThe connectors used for incoming cables of the whole range of switchgearsare metal-enclosed type.They are Pfisterer type, size 3, 52 kV up to 500 mm 2 section, for a maximuminsulation diameter of 47.1 mm. For bigger sections or bigger cable insulationdiameters, please consult available documentations about connectors.The maximum number of power cables per phase is 3, plus a fourth socketfor voltage transformers or other elements (arresters).The power cable compartment can house a maximum of four cables per phase.1805PE57634PE57633Power cables situation in case of cable-disconnectorDEGI04EN.indd21

InstallationImplementation examplesDE58955≥ 700 200 820 820 820 820 820 820 200 ≥ 700DE58956≥700 1620 ≥ 2160 1620 ≥700≥ 3500CBGS-2≥ 3000 x 2000CBGS-2≥ 10002500Weight per cubicle approx.: 1,000 kg.All distances are minimum values.For further details, please refer to the Instructions Manual.2600≥ 6800Switchgears placed one in front of the otherDE58957≥700 1620 ≥2180≥ 35002500CBGS-2≥ 3000 x 2000≥ 1000≥ 4500Switchgears inside the building22 DEGI04EN.indd

InstallationCivil engineering2530 380 380 30300300> 70070DE58958EN14 1≥ 7002Level 1075Fixing 11001 4 13003150270 2701005108208208208208205101 Level2 Power cables trench3 Hole for control cables4 Fixing5 Levelling screw M20-DIN 9126 Security nut7 Metal plate8 Nut welded to the frame9 Fixing screws (2 fixing points per switchgear)10 U section (40 x 20 x 5)DE58959EN1620Weight per cubicle approx.: 1,000 kg.For further details, please refer to the Instructions Manual.25005Level adjustmentFixing687910DEGI04EN.indd23