8DJ. Maintenance-free for lifetime

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Ashlyn Washington
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1 8DJ Maintenance-free for lifetime

2 Energy Distribution Welcome! Page 2 October 1 st DJ

3 Main Applications for Medium-Voltage Switchgear Power generation Power stations G Power transmission High and extra-high voltage > 72kV Primary distribution level Medium voltage up to 40.5kV up to 40kA (3s) 8DAB10 NXPLUS NXPLUS C x x x x x x x x x Secondary distribution level Medium voltage up to 24kV up to 25kA (1s) 8DJ10/20 8DH10 SIMOSEC x Distribution level Low voltage < 1kV Page 3 October 1 st DJ

4 Content Overview Technical Data Product Range 8DJ10 and 8DJ20 Switchgear Design Feeders Type RK, T, LST Operation Current Transformers (e.g. in feeder "LST") Low-Voltage Compartment for 8DJ20 Cable Connection Interlocks Classification According to IEC Customer Benefit Page 4 October 1 st DJ

5 Technical Features Up to 17.5 kv, 25 ka, 630 A feeders Up to 24 kv, 20 ka, 630 A feeders Factory-assembled, type-tested switchgear according to IEC , metal-enclosed Switchgear in block-type construction, non-extendable Gas-insulated Sealed Page 5 October 1 st DJ

6 Customer Benefit Environmental independence Compactness Maintenance-free design Personal safety Operational safety, reliability Economy, ecology Page 6 October 1 st DJ

7 General Information Market introduction: 8DJ10 since 1982 ( gas-insulated systems 8DJ20 since 1993 conquer the market!) Successful operation in more than 100 countries until today 8DJ gas-insulated switchgear for application in nearly all sectors like Airports & Ports Automotive Buildings Cement Industries Chemicals & Pharma Contractors Food & Beverage General Industries Healthcare Mining Offshore Industries Oil & Gas Paper Industries Semiconductor Steel & Aluminium Utilities Transportation & Railways Windfarms More than 128,000 8DJ switchgear assemblies (at the end of 2008) delivered Our experiences are based on more than 565,700 delivered gas-insulated feeders 8DJ and 8DH Page 7 October 1 st DJ

8 Typical Uses Switchgear Types 8DJ10 and 8DJ20 8DJ10 the smallest switchgear Common features Climate-independent and maintenance-free Standard switchgear design for vessels, switching devices and cable connection Standard operation For all applications Shortest delivery times 8DJ20 the most versatile switchgear Page 8 October 1 st DJ

9 Typical Uses 8DJ10 Switchgear 8DJ10 the narrowest switchgear For any kind of substations: Compact substations Masonry-enclosed rural substations, e.g. for wind generators Garage and vault substations Connection for transformer cables: top 3 versions/schemes with ring-main (RK) and transformer (T) feeders (schemes 10, 62, 71) 2 overall heights: 1360 and 1650 mm Page 9 October 1 st DJ

10 Typical Uses 8DJ20 Switchgear 8DJ20 the most versatile switchgear For any kind of substations: Compact substations Masonry-enclosed rural substations, e.g. for wind generators Garage and vault substations Connection for transformer cables: from the front (bottom) 13 versions/schemes with ring-main (RK) and transformer (T) feeders 4 schemes with circuit-breaker feeders 3 overall heights: 1200,1400 and 1760 mm Page 10 October 1 st DJ

11 Technical Data Rated voltage kv Rated frequency Hz 50/60 50/60 50/60 50/60 50/60 Rated short-duration power-frequency withstand voltage kv * Rated lightning impulse withstand voltage kv * Rated peak withstand current up to ka Rated short-circuit making current up to ka Rated short-time withstand current, 1 s up to ka s up to ka Rated short-circuit breaking current up to ka Rated normal current for busbar Rated normal current for feeders up to A up to A Rated normal current for transformer feeders A 200 Degree of protection Primary part (main circuit) IP65 * 42 kv / 95 kv according to some national requirements Page 11 October 1 st DJ

Product Range Switchgear Type 8DJ10 Scheme 10 (2RK+1T) 2 ring-main feeders, 1 transformer feeder Scheme 71 (3RK+1T) 3 ring-main feeders, 1 transformer feeder Scheme 62

12 Product Range Switchgear Type 8DJ10 Scheme 10 (2RK+1T) 2 ring-main feeders, 1 transformer feeder Scheme 71 (3RK+1T) 3 ring-main feeders, 1 transformer feeder Scheme 62 (4RK+2T) 4 ring-main feeders, 2 transformer feeders Switchgear width: 710 mm Switchgear width: 1060 mm Switchgear width: 1410 mm Height shown: 1650 mm Page 12 October 1 st DJ

13 Product Range Switchgear Type 8DJ20: Standard Schemes Scheme 10 (2RK+T) 2 ring-main feeders, 1 transformer feeder Scheme 20 (1RK+T) 1 ring-main feeder, 1 transformer feeder Scheme 71 (3RK+T) 3 ring-main feeders, 1 transformer feeder Switchgear width: 1060 mm Switchgear width: 710 mm Switchgear width: 1410 mm Height shown: 1400 mm Page 13 October 1 st DJ

14 Product Range Switchgear Type 8DJ20: Standard Schemes Scheme 02 (1RK) 1 ring-main feeder with radial cable connection Scheme 11 (2RK) 2 ring-main feeders Scheme 32 (3RK) 3 ring-main feeders Switchgear width: 710 mm Switchgear width: 710 mm Switchgear width: 1060 mm Height shown: 1400 mm Page 14 October 1 st DJ

15 Product Range Switchgear Type 8DJ20: Standard Schemes Scheme 70 (4RK) 4 ring-main feeders Scheme 84 (5RK) 5 ring-main feeders Switchgear width: 1410 mm Switchgear width: 1760 mm Height shown: 1400 mm Page 15 October 1 st DJ

16 Product Range Switchgear Type 8DJ20: Radial Transformer Feeders Scheme 01 (1T) 1 transformer feeder, 1 radial cable connection Switchgear width: 510 mm Scheme 21 (1K(E)+1T) 1 radial cable connection (option:with make-proof earthing switch), 1 transformer cable connection Switchgear width: 710 mm Height shown: 1400 mm Page 16 October 1 st DJ

17 Product Range Switchgear Type 8DJ20: With Disconnecting Circuit-Breaker Scheme 20 (1RK+1LST) 1 ring-main feeder, 1 circuit-breaker feeder Switchgear width: 710 mm Scheme 21 (1K(E)+1LST) 1 radial cable connection (option:with make-proof earthing switch), 1 circuit-breaker feeder Switchgear width: 710 mm Height shown: 1400 mm Page 17 October 1 st DJ

18 Product Range Switchgear Type 8DJ20: With Disconnecting Circuit-Breaker Scheme 10 (2RK+1LST) 2 ring-main feeders, 1 circuit-breaker feeder Scheme 71 (3RK+1LST) 3 ring-main feeders, 1 circuit-breaker feeder Switchgear width: 1060 mm Switchgear width: 1410 mm Height shown: 1400 mm Page 18 October 1 st DJ

mechanism - Spring-operated mechanism Three-position switch-disconnector Hermetically welded stainless-steel

19 Panel Design 8DJ10 Switchgear HV HRC fuse assembly Bushing as interface type A for cable plug with plug-in contact T feeder RK feeder Operating mechanisms for three-position switch: - Spring-operated/ stored-energy mechanism - Spring-operated mechanism Three-position switch-disconnector Hermetically welded stainless-steel vessel Bushing as interface type C for cable plug with bolted contact (M16) Pressure relief Page 19 October 1 st DJ

Panel Design 8DJ20 Switchgear Low-voltage compartment (if appl.

feeder (LST) (with disconnecting circuitbreaker) Switchgear

Three-position switchdisconnector Operating mechanism Bushings

20 Panel Design 8DJ20 Switchgear Low-voltage compartment (if appl.) Ring-main Feeder (RK) Transformer-feeder (TR) Circuit-breaker feeder (LST) (with disconnecting circuitbreaker) Switchgear vessel, hermetically welded, with switching device Three-position switchdisconnector Operating mechanism Bushings Pressure relief Cable connection HV HRC fuse assembly Page 20 October 1 st DJ

Operation of Three-Position Switch in Ring-Main Feeder (RK) Ready-for-service indicator Switch position indicator for switch-disconnector Switch position indicator for earthing switch Option: Locking

21 Operation of Three-Position Switch in Ring-Main Feeder (RK) Ready-for-service indicator Switch position indicator for switch-disconnector Switch position indicator for earthing switch Option: Locking device Type plate Option: Short-circuit indicator Capacitive voltage detecting system (plug-in) Actuating opening for switch-disconnector Actuating opening for earthing switch Interlock of cable compartment cover Page 21 October 1 st DJ

Operation of Three-Position Switch in Transformer Feeder (T) in 8DJ20 Ready-for-service indicator Switch position indicator for switch-disconnector Interlock for HV HRC fuse assembly Switch position

22 Operation of Three-Position Switch in Transformer Feeder (T) in 8DJ20 Ready-for-service indicator Switch position indicator for switch-disconnector Interlock for HV HRC fuse assembly Switch position indicator for earthing switch Option: Locking device Type plate Actuating opening for switch-disconnector Capacitive voltage detecting system (plug-in) Actuating opening for earthing switch Interlock of cable compartment cover Page 22 October 1 st DJ

Operation of Three-Position Switch in Transformer Feeder (T) in 8DJ10 Capacitive voltage detecting system (plug-in) Interlock for HV HRC fuse assembly Ready-for-service indicator Switch position

23 Operation of Three-Position Switch in Transformer Feeder (T) in 8DJ10 Capacitive voltage detecting system (plug-in) Interlock for HV HRC fuse assembly Ready-for-service indicator Switch position indicator for earthing switch Switch position indicator for switch-disconnector Type plate Option: Locking device Actuating opening for switch-disconnector Actuating opening for earthing switch Page 23 October 1 st DJ

Operation of Disconnecting Circuit-Breaker in Circuit-Breaker Feeder (LST) in 8DJ20 Switch position indicator for circuit-breaker Indications: CLOSED OPEN Circuit-breaker tripped Switch position

24 Operation of Disconnecting Circuit-Breaker in Circuit-Breaker Feeder (LST) in 8DJ20 Switch position indicator for circuit-breaker Indications: CLOSED OPEN Circuit-breaker tripped Switch position indicator for earthing switch Option: Locking device Capacitive voltage detecting system (plug-in) Actuating opening for circuit-breaker Actuating opening for earthing switch Interlock of cable compartment cover Page 24 October 1 st DJ

dielectrically stressed castresin parts (due to design) Climate-independent

25 Current Transformers in Circuit-Breaker Feeder (LST) in 8DJ20 Ring-core current transformers As cable-type current transformers Free of dielectrically stressed castresin parts (due to design) Climate-independent Secondary part accessible outside the enclosure without danger Page 25 October 1 st DJ

26 Current Transformer Designs for Circuit-Breaker Feeder (LST) in 8DJ20 Features Protection transformers for digital protection systems (option: measuring core) Climate-independent Ring-core current transformers free of dielectric stress Cable-type current transformers type 4MC overall heights available (depending on core data) Page 26 October 1 st DJ

27 Low-Voltage Compartment 8DJ20 Switchgear Height : 400 mm (standard) 600 mm (option) 900 mm (option) For circuit-breaker feeders type LST or RK feeders (depending on customerspecific requirements, e.g. telecontrol systems) Bus wires and control cables plugged in (via 6 or 10-pole coded module plug connectors) Customer-specific secondary equipment Wiring in H07VK (standard), options possible Page 27 October 1 st DJ

28 Low-Voltage Niche 8DJ20 Switchgear Customer connections to terminal strip/devices in operating mechanism box Niche inside the panel With metallic partitions towards the transformer connection compartment Suitable for terminals and/or secondary fuses Page 28 October 1 st DJ

Cable Connection Feeder Types RK, K, LST Bushings with outside cone (EN 50 181) Cable feeders (RK, K, LST): With bolted contact M16

29 Cable Connection Feeder Types RK, K, LST Bushings with outside cone (EN ) Cable feeders (RK, K, LST): With bolted contact M16 (630 A), interface type C Maintenance-free due to welded bushing Option: Cable clamps As-delivered Examples Page 29 October 1 st DJ

(cross-section up to 120 mm 2 ) Option for 8DJ20: With bolted contact M16 (630

30 Cable Connection Transformer Feeder (T) in 8DJ20 Switchgear Bushings with outside cone (EN ) With plug-in contact (200 A), interface type A (cross-section up to 120 mm 2 ) Option for 8DJ20: With bolted contact M16 (630 A), interface type C Option: Cable clamps As-delivered Examples Page 30 October 1 st DJ

Cable Connection Feeder Types RK, K, LST Standard Option for feeders (z.

contact) Access only with feeder earthed With cable compartment cover

Deep cable compartment cover: for other cable plugs (depending on

31 Cable Connection Feeder Types RK, K, LST Standard Option for feeders (z. B. LS1, LS2, RK, RK1, K) K+K K+Ü Bushing with outside cone (bolted contact) Access only with feeder earthed With cable compartment cover flush with operating front depending on make and type of cable plugs Deep cable compartment cover: for other cable plugs (depending on manufacturer/type) for plug-in surge arresters at the feeder Page 31 October 1 st DJ

Feeder Earthing Make-proof earthing with the threeposition switch by switching to EARTHED position No interlocks required Only in EARTHED position Opening of cable

32 Feeder Earthing Make-proof earthing with the threeposition switch by switching to EARTHED position No interlocks required Only in EARTHED position Opening of cable compartment Standardized operating concept for all panels Option: Locking device EARTHED function also in circuit-breaker feeder LST EARTHED OPEN CLOSED Page 32 October 1 st DJ

33 Cable Testing without Removing the Cables Cable test with - DC voltage - AC voltage Maximum values of test voltage *: - for U r 12 kv: = 48 kv VLF 0.1 Hz ~ 19 kv - for U r 24 kv: = 70 kv VLF 0.1 Hz ~ 38 kv Three-position switch in OPEN position Full operating voltage at the busbar (or at the 2 nd RK feeder) possible Measuring bolt Insulating cap * Observe recommendation and maximum values of cable or cable plug manufacturers Page 33 October 1 st DJ

34 Interlocks (Selection) Interlocks are designed according to IEC Standard interlocks Three-position switch-disconnector against earthing switch mechanical Cable compartment: Only accessible with feeder earthed HV HRC fuse replacement: Only accessible with feeder earthed (T feeder) Additional interlocks (option) Locking devices for three-position switch Closing lock-out: Prevents switching the three-position switch-disconnector from OPEN to CLOSED when the cable compartment cover is removed De-earthing lock-out in T feeder: Prevents de-earthing the three-position switchdisconnector (switching from EARTHED to OPEN ) when the cable compartment cover is removed Page 34 October 1 st DJ

35 Classification According to IEC Partition class: PM Loss of service continuity category: Panels with HV HRC fuses: LSC 2A Panels without HV HRC fuses: LSC 2B Accessibility of compartments: Busbar compartment: non-accessible Switching-device compartment: non-accessible Low-voltage compartment (option for 8DJ20): tool-based Cable compartment for switchgear: without HV HRC fuses: interlock-controlled with HV HRC fuses : interlock-controlled Internal arc classification: (Option acc. to IEC ) 7.2 kv to 24 kv Wall-standing arrangement: IAC A FL 21 ka 1 s (maximum) Page 35 October 1 st DJ

36 Customer Benefit Environmental independence Compactness Maintenance-free design Personal safety Operational safety, reliability Economy, ecology Page 36 October 1 st DJ

37 Environmental Independence Our solution Welded without seals, no diffusing humidity Stainless-steel vessel, long-time corrosion-resistant Laser-cut, laser-welded materials, exactly fitting quality Welded stainless-steel metal bellows, for transmission of operating power System-conforming, shock-proof connection systems Integral, highly sensitive leakage detection system in the factory, sealed for life Non-contact and non-sealed transmission of capacitive voltage detecting system Your benefit Insensitive to aggressive environments (salt water, tropical areas, dust, humidity, chemical pollutants), no oxidation of contacts and bolted joints, no condensation, no pollution layers on insulators, no resinifying grease Continuous insulation quality No ingress of foreign bodies, small animals Independent of site altitude with the corresponding product range (schemes) Page 37 October 1 st DJ

38 Compactness Our solution SF 6 -insulation, compact construction Switchgear with up to 6 feeders Combined disconnector and earthing switch, compact switch design User-friendly cable connection height Different switchgear heights for any kind of compact substations Your benefit Minimum space requirements, building volume saved: Up to 38 % at 12 kv, 43 % at 24 kv, efficient use of existing rooms, reduced volume for new constructions, compact design reduces transport and installation costs to a minimum Application for smallest compact substations Economic use of space in urban areas, installation in conurbation, load centres to minimize transmission losses Page 38 October 1 st DJ

39 Maintenance-Free Design Our solution Hermetically welded stainless-steel enclosure, stable, defined environmental conditions within the vessel Maintenance-free switching devices and operating mechanisms, no adjustment and lubrication Integrated busbar, constant insulation and service conditions, no oxidation and pollution layers Enclosed cable plugs, screened, independent of the environment Suitable transformer designs, ring-core current transformers Your benefit No gas work during installation or extensions, no repeated SF 6 -training required for personnel Maximum reliability of supply and availability, no shutdowns for maintenance Sealed for lifetime (according IEC and IEC / 5.15) No maintenance costs, minimized operational costs Highly economic investment Page 39 October 1 st DJ

40 Personal Safety Our solution Hermetically welded enclosure Internal arc classified according to IEC for 1 s (option) Logical mechanical interlocks Capacitive voltage detection system Make-proof earthing through three-position switch disconnector or three-position disconnecting circuitbreaker Your benefit Touching of live parts excluded, extremely high degree of protection of the primary part Accidental opening of vessel excluded Access to switching devices not required due to maintenance-free design Maloperation excluded Verification of safe isolation from supply without opening the enclosure Simple, standardized operating concept Page 40 October 1 st DJ

41 Operational Safety, Reliability Our solution Hermetically welded enclosure, welded stainless-steel metal bellows Current transformers outside the vessel Modular design Minimum use of insulating material Type and routine tests, quality management NC production processes Partition class PM Your benefit Independent of the environment, maintenance-free, no condensation, no oxidation No dielectric and dynamic stress for current transformers Fast transformer replacement possible Easy installation and extension without gas work, short shutdown time for extensions or panel replacement Easy and fast panel replacement Reduced fire load MTBF (4,977 years at the moment) Page 41 October 1 st DJ

42 Economy, Ecology Our solution Maintenance-free switchgear Compact construction switchgear for all customer requirements Economic production SF 6 only used in hermetically sealed pressure system 100 % SF 6 -recycling by means of special tools Identified, recyclable insulating material Listing of all materials used Your benefit Minimized operator expenses, high availability Reduced transport costs Minimum requirements regarding the building Minimized transmission losses by installation in load centres Reliable, calculable disposal Page 42 October 1 st DJ

43 8DJ Switchgear Typical Application Examples Page 43 October 1 st DJ

44 MTBF The term major failures and minor failures are taken from the CIGRE publication of the work group Reliability of High Voltage Switchgears. Definition: MTBF Meantime between failure Major failure (MF) Complete failure of a panel which causes the lack of one or more of its fundamental functions. NOTE: A major failure will result in an immediate change in the system operating e.g. the backup protective equipment being required to remove the fault, or will result in mandatory removal from service for non scheduled maintenance (Intervention required within 30 minutes). Minor failure (mf) Failure of a panel other than a major failure or any failure, even complete, of a constructional element or a subassembly which does not cause a major failure of the panel. MTTF Meantime to failure Page 44 October 1 st DJ

45 Thanks for your attention. 8DJ, the gas-insulated switchgear up to 17.5 kv, 25 ka, up to 630 A feeders 24 kv, 20 ka, up to 630 A feeders Page 45 October 1 st DJ

NXPLUS C Single busbar. Maintenance-free for lifetime

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