8DJ presentation 200809 en - Siemens · 8DAB10 NX PLUS NX PLUS C Power generation Power stations G...

8DJMaintenance-free for lifetime

October 1st 2008 Energy Sector / E D MV 28DJ

© Siemens AG 2008

Energy Distribution

Welcome!


© Siemens AG 2008

Main Applications for Medium-Voltage Switchgear

Power transmissionHigh and extra-high voltage > 72kV

Primary distribution levelMedium voltage up to 40.5kVup to 40kA (3s)

Secondary distribution levelMedium voltage up to 24kVup to 25kA (1s)

Distribution levelLow voltage < 1kV

8DJ10/20 8DH10 SIMOSEC

8DAB10 NXPLUS NXPLUS C

Power generationPower stations

G

x xx xxx xx x

x


© Siemens AG 2008

� 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 62 271-200

� Customer Benefit

Content


© Siemens AG 2008

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 62 271-200, metal-enclosed

� Switchgear in block-type construction, non-extendable

� Gas-insulated

� Sealed


© Siemens AG 2008

Customer Benefit

� Environmental independence

� Compactness

� Maintenance-free design

� Personal safety

� Operational safety, reliability

� Economy, ecology


© Siemens AG 2008

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 ContractorsFood & Beverage General Industries HealthcareMining Offshore Industries Oil & GasPaper 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


© Siemens AG 2008

Typical UsesSwitchgear Types 8DJ10 and 8DJ20

� 8DJ10…the smallest switchgear

� 8DJ20…the most versatile 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


© Siemens AG 2008

Typical Uses8DJ10 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


© Siemens AG 2008

Typical Uses8DJ20 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


© Siemens AG 2008

Technical Data

630up to ARated normal current for busbar

20

20

25

20

25

20

25

20

25

20

up to kA

up to kA

Rated short-time withstand current, 1 s

3 s

630up to ARated normal current for feeders

20

50

50

125

50

50/60

24

25

63

63

95

38

50/60

17.5

25

63

63

95

36

50/60

15

25

63

63

75 *

28 *

50/60

12

IP65Degree of protection Primary part (main circuit)

200ARated normal current for transformer feeders

25up to kARated short-circuit breaking current

63up to kARated short-circuit making current

63up to kARated peak withstand current

60kVRated lightning impulse withstand voltage

20kVRated short-duration power-frequency withstand voltage

50/60HzRated frequency

7.2kVRated voltage

* 42 kV / 95 kV according to some national requirements


© Siemens AG 2008

Product RangeSwitchgear Type 8DJ10

710 mmSwitchgear width:

2 ring-main feeders,1 transformer feeder

Scheme 10 (2RK+1T)


4 ring-main feeders,2 transformer feeders

Scheme 62 (4RK+2T)



Scheme 71 (3RK+1T)

Height shown: 1650 mm


© Siemens AG 2008

Product RangeSwitchgear Type 8DJ20: Standard Schemes


2 ring-main feeders, 1 transformer feeder

Scheme 10 (2RK+T)



Scheme 71 (3RK+T)


1 ring-main feeder,1 transformer feeder

Scheme 20 (1RK+T)



© Siemens AG 2008



1 ring-main feeder with radial cable connection

Scheme 02 (1RK)


3 ring-main feedersScheme 32 (3RK)





© Siemens AG 2008

Product RangeSwitchgear Type 8DJ20: Radial Transformer Feeders


1 transformer feeder,1 radial cable connection

Scheme 01 (1T)


1 radial cable connection(option:with make-proof earthing switch),1 transformer cable connection

Scheme 21 (1K(E)+1T)



© Siemens AG 2008

Product RangeSwitchgear Type 8DJ20: With Disconnecting Circuit-B reaker



1 ring-main feeder,1 circuit-breaker feeder

Scheme 20 (1RK+1LST)


1 radial cable connection(option:with make-proof earthing switch),1 circuit-breaker feeder

Scheme 21 (1K(E)+1LST)


© Siemens AG 2008

Product RangeSwitchgear Type 8DJ20: With Disconnecting Circuit-B reaker



2 ring-main feeders,1 circuit-breaker feeder



3 ring-main feeders,1 circuit-breaker feeder



© Siemens AG 2008

Panel Design 8DJ10 Switchgear

HV HRC fuse assembly

Operating mechanisms forthree-position switch:

- Spring-operated/ stored-energy mechanism

- Spring-operated mechanism

Hermetically weldedstainless-steel vessel

Three-position switch-disconnector

Bushing as interface type “A” for cable plug with plug-in contact

Bushing as interface type “C” for cable plug with bolted contact (M16)

Pressure relief

T feeder RK feeder


© Siemens AG 2008

Transformer-feeder (TR)

Ring-main Feeder (RK)

Low-voltage compart-ment (if appl.)

Switchgear vessel, hermetically welded,with switching device

Operating mechanism

Cable connection

Bushings

Panel Design 8DJ20 Switchgear

Pressure relief

Three-position switch-disconnector

HV HRC fuse assembly

Circuit-breaker feeder (LST) (with disconnecting circuit-breaker)


© Siemens AG 2008

Operation of Three-Position Switch in Ring-Main Feeder (RK)

Ready-for-service indicator

Actuating opening forearthing switch

Option:Short-circuit indicator

Switch position indicatorfor earthing switch

Switch position indicatorfor switch-disconnector

Option:Locking device

Type plate

Interlock of cable compartment cover

Actuating opening forswitch-disconnector

Capacitive voltage detecting system (plug-in)


© Siemens AG 2008

Operation of Three-Position Switch in Transformer Feeder (T) in 8DJ20

Interlock for HV HRC fuse assembly





Type plate






© Siemens AG 2008

Operation of Three-Position Switch in Transformer Feeder (T) in 8DJ10

Interlock for HV HRC fuse assembly





Type plate





© Siemens AG 2008

Operation of Disconnecting Circuit-Breaker in Circuit-Breaker Feeder (LST) in 8DJ20



Actuating opening forcircuit-breaker



Switch position indicatorfor circuit-breaker


Indications:“CLOSED”“OPEN”“Circuit-breaker tripped”


© Siemens AG 2008

Current Transformers in Circuit-Breaker Feeder (LST) in 8DJ20

Ring-core current transformers

� As cable-type current transformers

� Free of dielectrically stressed cast-resin parts (due to design)

� Climate-independent

� Secondary part accessible outside the enclosure without danger


© Siemens AG 2008

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 4MC70..

� 4 overall heights available(depending on core data)


© Siemens AG 2008

Low-Voltage Compartment8DJ20 Switchgear

� Height : 400 mm (standard)600 mm (option)900 mm (option)

� For circuit-breaker feeders type LST or RK feeders (depending on customer-specific 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


© Siemens AG 2008

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


© Siemens AG 2008

Cable ConnectionFeeder Types RK, K, LST

� Bushings with outside cone (EN 50 181)

� 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


© Siemens AG 2008

Cable ConnectionTransformer Feeder (T) in 8DJ20 Switchgear

� Bushings with outside cone (EN 50 181)

� With plug-in contact (200 A), interface type “A” (cross-section up to 120 mm2)

� Option for 8DJ20: With bolted contact M16 (630 A), interface type “C”

� Option: Cable clamps

As-delivered Examples


© Siemens AG 2008

Cable ConnectionFeeder Types RK, K, LST

Standard Option for feeders (z. B. LS1, LS2, RK, RK1, K)

� 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

K+Ü

� Bushing with outside cone (bolted contact)

� Access only with feeder earthed

K+K


© Siemens AG 2008

Feeder Earthing

� Make-proof earthing with the three-position 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


© Siemens AG 2008

Cable Testing without Removing the Cables

Measuring bolt

Insulating cap

� Cable test with - DC voltage- AC voltage

� Maximum values of test voltage *:- for Ur 12 kV: = 48 kV VLF 0.1 Hz ~ 19 kV- for Ur 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 2nd RK feeder) possible

* Observe recommendation and maximum values of cable or cable plug manufacturers


© Siemens AG 2008

Interlocks (Selection)

Interlocks are designed according to IEC 62 271-200

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 switch-disconnector (switching from “EARTHED” to “OPEN”) when the cable compartment cover is removed


© Siemens AG 2008

Classification According to IEC 62 271-200

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 62 271-200) 7.2 kV to 24 kV� Wall-standing arrangement: IAC A FL 21 kA 1 s (maximum)


© Siemens AG 2008

Customer Benefit

� Environmental independence

� Compactness

� Maintenance-free design

� Personal safety

� Operational safety, reliability

� Economy, ecology


© Siemens AG 2008

Environmental Independence

Our solutionWelded 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 benefitInsensitive 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 altitudewith the corresponding product range (schemes)


© Siemens AG 2008

Compactness

Our solutionSF6-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 benefitMinimum 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


© Siemens AG 2008

Maintenance-Free Design

Our solutionHermetically 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 benefitNo gas work during installation or extensions,no repeated SF6-training required for personnel

Maximum reliability of supply and availability,no shutdowns for maintenance

Sealed for lifetime(according IEC 62 271-200 and IEC 60694 / 5.15)

No maintenance costs,minimized operational costs

Highly economic investment


© Siemens AG 2008

Personal Safety

Our solutionHermetically welded enclosure

Internal arc classified according to IEC 62 271-200 for 1 s (option)

Logical mechanical interlocks

Capacitive voltage detection system

Make-proof earthing throughthree-position switch disconnector or three-position disconnecting circuit-breaker

Your benefitTouching 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


© Siemens AG 2008

Operational Safety, Reliability

Our solutionHermetically 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 benefitIndependent 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)


© Siemens AG 2008

Economy, Ecology

Our solutionMaintenance-free switchgear

Compact constructionswitchgear for all customer requirements

Economic production

SF6 only used in hermetically sealed pressure system

100 % SF6-recycling by means of special tools

Identified, recyclable insulating material

Listing of all materials used

Your benefitMinimized operator expenses, high availability

Reduced transport costs

Minimum requirements regarding the building

Minimized transmission losses by installation in load centres

Reliable, calculable disposal


© Siemens AG 2008

MTBF

The term major failures and minor failures are taken from the CIGRE publication of the work group 13.06 “Reliability of High Voltage Switchgears”.

Definition:

� MTBFMeantime between failure

� Major failure (MF)Complete failure of a panel which causes the lack of one or more of its fundamentalfunctions.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 sub-assembly which does not cause a major failure of the panel.

� MTTFMeantime to failure


© Siemens AG 2008

8DJ, the gas-insulated switchgear up to

17.5 kV, 25 kA, up to 630 A feeders24 kV, 20 kA, up to 630 A feeders

Thanks for your attention.

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