—INTERNALELDS, 3408 INDOOR PRODUCTSNAL- MV indoor air insulated switch-disconnector Products features and applications—AgendaIntroduction to MV indoor air insulated switches Design and operation principlesDrivesAccessoriesApplicationsSummary—Introduction to MV switch-disconnectorsWhat is switch-disconnector•Switch-disconnectors are designed to open and close circuitsunder normal current conditions•Cannot interrupt under fault conditions •Able to close into a fault up to its fault-close current ratingOverviewNAL/NALF (IEC)VersaRupter (USA)NAL CSA (Canada)Portfolio –indoor air insulated switch-disconnectorsIEC standards –12-36 kV •Rated current:…1250A •STC: …31.5 kA (1s)•Making: …67 kA peakANSI standard–4.76-38 kV•Rated current: …1200A•STC: …40 kA (3s)•Fault making: (61)kA RMS CSA 22.2 compliance –4.16-34.5 kV •Rated current:…1200A •STC:…25 kA (3s)•Fault close:…40 kA RMSPortfolio – indoor air insulated switch-disconnectors NAL/NALF (IEC)-highlightsIEC standards–12-36 kV•Rated current:…1250A •STC: …31.5 kA (1s)•Making: …67 kA peak •well known around the globe, with more than 800,000 switches delivered•unique design that extinguishes electric arcs and enables high switching capacity•an attractive solution as a key breaking element for applications in enclosed switchgear and transformer compact substations.•In combination with ABB type CEF current limiting fuses, NALF switch-fuse combination ensures control over the full range of overload and short-circuit current •NAL/NALF switch-disconnector can be used in all medium voltage primary and secondary distribution systems like industrial workshops, factories, prefabricated substations, CSS, solar and wind grid connection stations.Applications–Line switch disconnector in MV networks:•Interrupt load, sectionalize, isolate downstream equipment –Industrial and commercial–Switching and protection for distribution transformers when combined with fuses (IEC 62271-105)–NAL switch capable of:•1000 mechanical no load operations•Up to 100 electrical operations at full rated current–Service conditions – indoor, with ambient air temp. within -40 and up to 55 °C•Standard NAL/F is addressed for normal service conditions (Design Class 0)•NAL –H/NALF-H is suitable for severe operating conditions (Design Class 2) acc. to IEC 62271-304:2008-05What are the applications?NAL design configurations–Pole distance•12 kV – 150 mm, 170 mm and 210 mm,•17.5 kV – 170 mm and 210 mm,•24 kV – 235 mm and 275 mm,•36 kV – 360mm,–Rated currents•400, 630 and 1250 A at 12 kV,•400, 630 A at 17.5/24 kV,•630/800/1000 A at 36 kV,–STC: up to 31.5 kA (1s)–Making capacity: up to 67 kA (peak)–E3 electrical class performance: NAL/NAL-H 12 630A and NAL/NAL-H 17/24 630ASmart choice of available product basic variants withstandard and severe application variantsNAL switches comply with recent IEC 62271-1 and IEC 62271-103 standard NALF switch-fuse combination comply with recent IEC 62271-1 and IEC62271-105 standardsTypes designation1) Only for versions with A mechanism and fuse release.2) The “EB” type of free standing earthing switch, contains the following free standingearthing switches for 36 kV only: EB (free standing earthing switch for separateinstallation), EBS ( EB 36 on pivot side NAL), EBSU ( EB 36 on opening side NAL),EBF (EB 36 on pivot side NAL), EBFU (EB 36 on opening side NALF). EBS, EBSU, EBF,EBFU names are used in product configurator and as configuration description only.3) For 36 kV only4) For 12 kV only5) For left hand side operation shaft extension must be used6) The earthing switch is normally delivered without mechanical interlocking, whichmust be specified separately.7) The “E” type of earthing switch, contains the following earthing switches:EF (earthing switch attached to fuse-base) and EI (earthing switch attachedto fuse-base and located under fuse-links). EF and EI names are used in productconfigurator and as configuration description only.8) For 12, 17.5 and 24 kV9) K for 12&36 kV; K17 for 17.5 kV; K24 for 17.5&24 kV10) A for 12&36 kV; A17 for 17.5 kV; A24 for 17.5&24 kV—Design and operation principles NALModular design for easy adaptationNAL/F design principlesThe NAL can be easily configured in line with specific application requirements–Main configurable components•Single or double spring mechanism•Auxiliary contacts for switch and earthing switch•Motor drives – shaft and front mounted•Blocking and tripping coils•Fuse base with or w/o fuse tripping system – upper/lower•Earthing switch – upper/lower•Mechanical interlocks•Blown fuse indicatorModular design for easy adaptationNAL/F design principlesThe NAL can be easily configured in line with specific application requirements–Main configurable components•Single or double spring mechanism•Auxiliary contacts for switch and earthing switch•Motor drives – shaft and front mounted•Blocking and tripping coils•Fuse base with or w/o fuse tripping system – upper/lower•Earthing switch – upper/lower•Mechanical interlocks•Blown fuse indicatorModular design for easy adaptationThe NAL can be easily configured in line with specific application requirements–Main configurable components•Single or double spring mechanism•Auxiliary contacts for switch and earthing switch•Motor drives – shaft and front mounted•Blocking and tripping coils•Fuse base with or w/o fuse tripping system – upper/lower •Earthing switch – upper/lower•Mechanical interlocks•Blown fuse indicatorNAL/F design principlesModular design for easy adaptationNAL/F design principlesThe NAL can be easily configured in line with specific application requirements–Main configurable components•Single or double spring mechanism•Auxiliary contacts for switch and earthing switch•Motor drives – shaft and front mounted•Blocking and tripping coils•Fuse base with or w/o fuse tripping system – upper/lower•Earthing switch – upper/lower•Mechanical interlocks•Blown fuse indicatorModular design for easy adaptationNAL/F design principlesThe NAL can be easily configured in line with specific application requirements–Main configurable components•Single or double spring mechanism•Auxiliary contacts for switch and earthing switch•Motor drives – shaft and front mounted•Blocking and tripping coils•Fuse base with or w/o fuse tripping system – upper/lower•Earthing switch – upper/lower•Mechanical interlocks•Blown fuse indicatorModular design for easy adaptationNAL/F design principlesThe NAL can be easily configured in line with specific application requirements–Main configurable components•Single or double spring mechanism•Auxiliary contacts for switch and earthing switch•Motor drives – shaft and front mounted•Blocking and tripping coils•Fuse base with or w/o fuse tripping system – upper/lower•Earthing switch – upper/lower•Mechanical interlocks•Blown fuse indicatorModular design for easy adaptationNAL/F design principlesThe NAL can be easily configured in line with specific application requirements–Main configurable components•Single or double spring mechanism•Auxiliary contacts for switch and earthing switch•Motor drives – shaft and front mounted•Blocking and tripping coils•Fuse base with or w/o fuse tripping system – upper/lower•Earthing switch – upper/lower•Mechanical interlocks•Blown fuse indicatorModular design for easy adaptationNAL/F design principlesThe NAL can be easily configured in line with specific application requirements–Main configurable components•Single or double spring mechanism•Auxiliary contacts for switch and earthing switch•Motor drives – shaft and front mounted•Blocking and tripping coils•Fuse base with or w/o fuse tripping system – upper/lower•Earthing switch – upper/lower•Mechanical interlocks•Blown fuse indicatorModular design for easy adaptationNAL/F design principlesThe NAL can be easily configured in line with specific application requirements–Main configurable components•Single or double spring mechanism•Auxiliary contacts for switch and earthing switch•Motor drives – shaft and front mounted•Blocking and tripping coils•Fuse base with or w/o fuse tripping system – upper/lower•Earthing switch – upper/lower•Mechanical interlocks•Blown fuse indicatorModular design for easy adaptationNAL/F design principlesThe NAL can be easily configured in line with specific application requirements–Main configurable components•Single or double spring mechanism•Auxiliary contacts for switch and earthing switch•Motor drives – shaft and front mounted•Blocking and tripping coils•Fuse base with or w/o fuse tripping system – upper/lower•Earthing switch – upper/lower•Mechanical interlocks•Blown fuse indicatorNAL with ES design schemePiston w. rodPost insulatorES main contactES kniveHollow insulatorArch chuteMain contactCurrent kniveArching kniveMain shaftFrameES shaft ES frameOctober 20, 2023Slide21NAL/VR design principles (1)Two active breaking systems during interruption process–Gas blast (current dependent)•Whenever high overload current must be interrupted the high temperature appears inside arcing chamber, that activates intensive gas molecules release process –Air blast (current independent)•Whenever NAL opens, air has been compressed inside cylinder of hollow insulator by moving up the piston, that is mechanically interlocked with main shaft •The compressed air is blown througharcing chamber to support interruption of small load currentsUnique combination of two arc extiguinishing systemsFunction – switch in closed position(1) Closed position•Main and arcing knives are closed•Current floats through main knivesFunction – switch opening(2)Opening process•Main knives open first•Current load stays on arcing knives only•Arcing knives open and break load currentFunction – switch in open position(3) Completely opened•All knives are disconnected•Visible insulation breakFunction – switch closing(4)Closing process•Main knives close first•Arcing knives close•Load current is connected toterminalsFunction – switch in closed position(5/1) Closed position•Main and arcing knives are closed•Current floats through main knives–Single spring snap action device–Operates when shaft is rotated past dead center –Clockwise to open, counterclockwise to close–Can be operated remotely by motor–Dual spring stored energy device–Clockwise to charge spring, counterclockwise to close –Minimal rotation clockwise to open switch–Can be operated remotely by motor –Required for shunt and fuse tripping –Can be opened remotely by shunt tripK-mechanismNAL/F design principlesA-mechanism—Drives NAL—Indoor switch-disconnector NALHE rotating operating system▪HE is intended to preform maneuvers of NAL/F and earthing switches types E/EB from the front of application panel.▪HE enable both manual and motor operations for motor drives is placed at HE bevel gear.NAL –manual operationFront mounted - Up to 40°Front mounted 90°Side mounted HE drive installation - examples1. HE drive2. Manual operating Handle3. LHS Shaft extension1. Front bearing HE with cardanic joint2. Manual operating handle3. Connecting rod L=2 m*4. Bevel gear * Other lengths available on request 1. Front bearing HE with cardanic joint 2. Manual operating handle 3. Connecting rod L=2 m*4. Bevel gear5. Transmission 90° complete6. Connecting rod * Other lengths available on requestNEMD vertical operating system▪NEMD is intended to preform maneuvers of NAL/F and earthing switches types E/EB from the front of application panel.▪Manual operations can be performed by vertical up and down movements of hand levelSpecification:•Optional blocking by pad lock•Moving angle of operating handle MAX 90o•Mechanical withstand 2000 c/o NAL –manual operationOperating sides1 – RHS – NAL operated from right side2 – LHS – NAL operated from left side NAL/VR application arrangements12Mounted directly on the NAL shaft or on the front of application panel •Remote operations (time and resources savings),•Motor drive dedicated for operating springs type K and A,•Does not need maintenance in normal service conditions ,•Can be integrated and delivered with RTU, protection relay and gateways,•Wide range of supplying voltages and blocking coils types:•24, 48, 110/125, 230 AC/DC ,•Operating temperatures ( -40o C +55o C),•Dedicated front bearing HE for motors,•Proven design and reliable operation,•Silent operations,•Easy for use – compact design.Motor drive type NMFor frontal assembly on the panel or directly on the switch shaft •Suitable for switch-disconnectors, disconnectors and earthing switches due to adjustable rotating angle.•Control and commands send locally or remotely (radio, internet).•Operating time from 4 up to do 10 s depends on applicable switch and operating load.•Compliance with the following IEC standards:•EN 60335-1, EN 62271-1,•EN 62271-102, EN 62271-103Motor drive type UEMC41Retrofit and new installationsFor frontal assembly on the panel or directly on the switch shaft •Remote control (saving time and manpower), •No maintenance needed (for 5000 operations and 10 years),•Flexibility in application (same device for different switches),•Easy adjustable rotation angle (from 0° to 300°)•Could be supplied together with RTU/relay and communication module, •Wide range of applications and supplying voltages:•24, 48, 110/125, 220/230 AC/DC,•Working temperature (from -40o C to +70o C),•Reliability:High number of operation – up to 5000 cycles, Max. torque 300 Nm,•Safety:•Continuous power supply, •Mechanical and electrical locking,•Low noise level,•Easy to use - compact design.Motor drive type UEMC41UEMC 41 with integrated control unit - ICU UEMC 41 with outer control box - OCB UEMC 41 with loose control componentsfor OEM - CCFront mounting motor with connection up to 40°Front mounting motor with 90° connection Motor drive type UEMC411 – UEMC 41 drive2 – Connectingrod L=1,3 m*3 – Bevel gear4 – Manual operating handle* Other lengths available on request 1 – UEMC 41 drive2 – Manual operating handle3 – Vertical connecting rod L=2 m*4 – Bevel gear5 – Transmission 90° complete6 – Connecting rod* Other lengths available on requestMotor drive installed directly on the shaft (left side)Motor drive installed on the wall Motor drive type UEMC411 – UEMC 41 drive2 – Shaft connector3 – Manual operating handle 1 – UEMC 41 drive2 – Support with bevel gear3 – Connectingrod L=2 m*4 – Bevel gear* Other lengthsavailable on request—Accessories NAL—Auxiliary switch can be mounted on all switch disconnectors, max.8NO and 8NC and on all earthing switches except LCES, max. 4NO + 4NC.Auxiliary switch for blown fuse (1NO + 1NC) – for use only in NALF with A-mechShunt trip coil mounted on all A-mechanisms. This coil is available for the following voltages: 24, 48, 110, 220 V DC and 110, 220 V AC. Itshall always be connected in series with an auxiliary switch.Blocking coil on lower part of HE driveAccessories for NALIndoor switch-disconnector NALManual drive HE, coils and auxiliary contacts—Indoor switch-disconnector NALEarthing switches available for NAL:-Quick type E – earthing switch attached to the switch and/or to the fuse base insulators and equipped with quick spring mechanism with making capacity,-Quick type EB – free standing earthing switch for assembling at both sides of the switch configuration or for independent application,Earthing switches—Applications NALNAL-H RemarksThe regular NAL/F with BMC insulators is designclass 0 (C0P L ) that corresponds to normal servicecondition application and standard NAL works fine everywhere where this operating conditions are provided.Wherever we observe harsh operating conditions, special type of the switch-disconnector NAL/F-H is recommended that has been type tested according to IEC 62271-304 design class 2 for severe operating conditions.Regardless type of the switch all installation work, station design, location selection, ground preparation, maintenance must be done in professional way to keep installation in good conditions within assumed lifetime.NALPrefabricated substation/CSS application highlightsNAL Application inside substationsCompact design with side mounted switches, NALF in upper level and up to three NAL in lower level Back or side mounted switches, stations with transformers or coupling unitsSwitch-fuse combinationWhy do we use indoor switch-fuse combination?Switch-fuse combination - according to IEC 62271-105 - combination of a three-pole switch with three fuses provided with strikers, the operation of any striker causing all three poles of the switch to open automaticallyBenefits–Switch-fuse combinations are commonly used as line and transformer switches being an economic alternative to circuit breakers–Capable to interrupt full range overload and short circuits current due to high breaking performance of fuses and automatic fuse tripping system IEC 62271-105–Capable of significantly reduce of prospective current value due to extremely fast operating time of current limiting fusesApplication example – NALF + CEF switch-fuse combination acc. to IEC 62271-10512 kV Switch 12 kV Switch-fuse combination▪Rated current630A 125A determined by fuse▪Max. breaking capacity1600A 63kA extended by fuseReference list of ABB fusesNALF GSec V-Contact VSCNAL/VR application inside air insulated switchgearsHighlights for typical panel applications–ZS1 primary•Switch on the side in common compartment with IT (12-24 kV)•Doors interlocked•Manual and motor drives–Panel builder primary and secondary•Switch on the side or on the back•IEC compact secondary panels (615 mm for 24 kV)•With or w/o fuse holdersABB ZS1 IEC (on the picture)/panelbuildersNAL application inside open switchgearsHighlights for retrofit of old distribution stations–Open cells stations•Switch on the back operated from front of installation (12-24 kV)•Simplified access prevention (fenceprotection only)•Installed in concrete housing connected to overhead lines•Manual or motorizedOld distribution stations IECIndoor switch-disconnectors NAL and CEF fuses – application highlightsCommercial Switchgear Canada – NAL CSA Group Certified Product Listed installed in the outdoor panels. Toromocho copper minelocated in Junin Peru at 4300MASL. ABB NALF and CEFwere delivered for Chinalcomining in 2010.Åre is the major center foralpine skiing in Swedenhosted twice the AlpineWorld Championships andFreestyle FIS World Cup. ABBNAL/NALF 12 kV switchesand CEF fuses are installed intransformer station thereNALF 17NALF and CEF 24NALF and CEF 12。
