Areva T&D WI Operating Instructions Manual Download Page 18

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Bus Bar Earthing Bus Zone 1 (BZ1)

BZ1

BZ2

BZ1

BZ2

BZ1

BZ2

BZ1

BZ2

BZ1

BZ2

BZ1

BZ2

BZ1

BZ2

BZ1

BZ2

^
^

BS = bus section panel
BR = bus riser panel

^
^

BS = bus section panel
BR = bus riser panel

Bus Bar Earthing Bus Zone 2 (BZ2)

Switching devices BS

position/

operation

Circuit-breaker

OFF

Spring charging

charged

discharged

charged

3position switch:
Disconnector

OFF

Interlocking lever

free

blocked

Earthing switch

OFF

Interlocking lever

free

blocked

Switching devices BR

position/

operation

3position switch:
Disconnector

OFF

Interlocking lever

free

blocked

Earthing switch

OFF

Interlocking lever

free

blocked

free

All incomer and feeder disconnectors of BZ1 must be in open position before ear thing operations can be carried out.

Switching devices BS

position/

operation

Circuit-breaker

OFF

Spring charging

charged

discharged

charged

3position switch:
Disconnector

OFF

Interlocking lever

free

blocked

Earthing switch

OFF

Interlocking lever

free

blocked

free

Switching devices BR

position/operation position/

position/

operation

3position switch:
Disconnector

OFF

Interlocking lever

free

blocked

Earthing switch

OFF

Interlocking lever

free

blocked

All incomer and feeder disconnectors of BZ2 must be in open position before ear thing operations can be carried out.

Summary of Contents for WI

Page 1: ...AREVA T D Technical Instructions WI Gas Insulated switchgear single two phase version 55 kV Operating Instructions No AGS 531 491 01 Edition 09 2009 GAS INSULATED SWITCHGEAR ...

Page 2: ... 41 46 20 777 49 0 9 41 46 20 778 AREVA Energietechnik GmbH Sachsenwerk Medium Voltage 2009 All rights reserved to this technical instruction Reproduction and making available of this technical instruction or extracts to third parties are prohibited Only the complete reproduc tion of this technical instruction is permitted by written permission from AREVA Energietechnik GmbH Sachsenwerk Medium Vol...

Page 3: ...5 2 2 Electromechanical interlocks 15 5 2 3 Key locking of mechanical operation 5 2 4 Interlocking of various panel types 16 5 2 4 1 Incomer and feeder panels 16 5 2 4 2 Bus section coupler 16 5 2 4 3 Bus sectionalizer 19 5 2 4 4 Busbar earthing switch 20 5 3 Switching operation circuit breakers disconnectors earthing switches 21 5 4 Standard switching operations 24 5 5 Earthing the busbar 25 5 6 ...

Page 4: ...l and damage to equip ment Warning This symbol warns of dangerous electrical voltage Contact with live parts may result in fatal injury Warning This symbol indicates important instructions Non compliance may result in serious injury death or damage to the equipment Important This symbol is used for information which is impor tant to avoid damage 1 3 Use in accordance with the intended purpose WI g...

Page 5: ...d regulations WI switchgear may only be operated under normal operating conditions according to the IEC Publication IEC 62271 1 Operation under conditions deviating from these is only admissible upon consultation with and approved by the manufacturer 1 Other values possible on request Ambient conditions acc to IEC 62271 1 Temperature class Minus 5 indoors Min max ambient temperature C 5 40 1 Avera...

Page 6: ...witch off the auxiliary voltage and prevent it from reclosing Warning There is a risk of injury when working on the drive mechanism Release the circuit breaker s energy storing device by per forming the cor responding OFF ON OFF operating sequence in case of a make proof earthing switch by the appropriate ON operation Action in the event of incidents or accidents The WI switchgear panels feature p...

Page 7: ...e 55 kV S single phase version T two phase version Dimensions Panel width 600 mm Panel height 2664 mm 3020 by enlarged bottom and front cover plate In case of queries and orders for spare parts the following data on the name plate must be specified Type designation Serial number Year of manufacture 1 2 3 4 Fig 2 1 Name plate 1 Type designation 2 Serial number 3 Year of manufacture 4 Rating see als...

Page 8: ...unit Blocking coil Blocking coils prevent the circu it breaker from being closed and opened via the mechanical push buttons ON or OFF as well as actuation of the interlocking levers of the disconnectors and earthing switches Operating counter The operating counter indicates the number of switching opera tions 8 Power consumption solenoids and motor Power consumption DC AC 50 60 Hz approx W approx ...

Page 9: ...in contacts Please take current adjustment of auxiliary switches from the latest revision of switchboard s LV sche matics Auxiliary switches may not be disas sembled Rated supply voltage DC Switching capacity Time constant T L R Rated short time current V A 24 8 ms 20 100 A for a duration of 30 ms 48 4 60 3 110 2 220 1 Rated continuous current A 10 AC 120 10 230 10 Auxiliary switch ...

Page 10: ...nsity gauge circuit breaker tank 8 Voltage transformer disconnector optional 9 Metal enclosed voltage transformer optional 10 Socket size 3 for voltage transformer termination 11 Socket size 3 for HV cable termination per phase 11a Socket size 3 for double HV cable termination per phase 11b Socket size 3 for single HV cable termination per phase 12 Panel supporting frame 13 Low voltage cabinet 14 ...

Page 11: ... Low voltage cabinet 9 Front cover plate 10 Circuit breaker disconnector earthing switch drive cabinet 11 Over pressure release busbar tank 12 Panel supporting frame 17 Interconnecting tank 1 17 17 Fig 3 5 Bus riser panel 2 3 9 4 10 7 6 12 8 A B E C D Fig 3 6 Single busbar WIA up to 55 kV A Drive with front control panel operation unit B Tank with circuit breaker disconnector and earthing switch C...

Page 12: ...limits Important Observe the Operating Manual of the voltage indicators used Important All phases L1 and L3 must always be checked 12 4 Voltage Detecting Systems VDS Two capacitive voltage indication systems are in use ensuring phase is live energized and phase is dead deenergized indication Fig 4 1 Horstmann indicator HR ST Fig 4 2 Metering sockets for the continuous voltage indicator Fig 4 4 Pha...

Page 13: ...osition indicator earthing switch 7 opening to put in crank handle for earthing switch operation 8 interlocking lever earthing switch 9 position indicator disconnector 10 opening to put in crank handle for disconnector operation 11 interlocking lever disconnector 12 optional device to lock mechanical operation of circuit breaker disconnector and earthing switch 13 name plate 14 density gauge monit...

Page 14: ... 0 bar 0 5 1 0 0 1 0 1 5 0 5 SF6 bei20 C KL1 0 bar 0 5 1 0 0 1 0 1 5 0 5 SF6 bei20 C KL1 0 bar 0 5 1 0 0 1 0 1 5 Further panel types Feeder incomer Bus section riser Bus sectionalizer Bus section coupler with circuit breaker ...

Page 15: ...coils and their location depend on switchboard s interlocking configuration and can be taken from the associated low volta ge schematics 5 2 3 Key locking of mechanical operation Optionally two alternatives are availa ble to lock mechanical manual ope ration of circuit breaker ON close disconnector and earthing switch A label sticked close to key locking points to a incomplete interlocking scheme ...

Page 16: ...n if bus zones have to be separated reconnected or earthed They are mounted at drive mechanisme of Bus section panel earthing switch disconnector switch circuit breaker ON close and OFF trip Bus riser panel earthing switch disconnector switch Incomer and feeder panels disconnector switch Fig 5 4 Principle of electromechanical interlocking bus section coupler Switching device position position posi...

Page 17: ...ings also Further details of switchgear opera tion can be found in chapter 5 3 4 5 BS bus section panel BR bus riser panel Switching devices BS position position position operation operation operation Circuit breaker ON OFF OFF Spring charging 3position switch Disconnector ON ON OFF Interlocking lever blocked free free Earthing switch OFF OFF OFF Interlocking lever blocked blocked free Crank handl...

Page 18: ...ing lever free free free blocked Earthing switch OFF OFF OFF ON Interlocking lever free blocked free 1 free 1 All incomer and feeder disconnectors of BZ1 must be in open position before ear thing operations can be carried out Switching devices BS position position position position operation operation operation operation Circuit breaker OFF OFF OFF ON Spring charging charged discharged charged cha...

Page 19: ... Bus sectionalizer Usually an interlocking scheme applying a mechanical as per 5 2 3 1 and electromechanical inter locks using blocking coils as per 5 2 2 is installed These blocking coils ensure safe switchboard bus sectionalizer ope ration if bus zones have to be sepa rated reconnected or earthed They are mounted at drive mechanism of Bus sectionalizer panel busbar disconnector earthing switch b...

Page 20: ...er panels ON all OFF all OFF Interlocking lever blocked blocked blocked b Busbar Earthing Bus Zone 1 2 BZ1 BZ2 BZ1 BZ2 BZ1 BZ2 BZ1 BZ2 Switching device position position position position position operation operation operation operation operation Bus sectionalizer Disconnector ON OFF OFF OFF ON Interlocking lever free free blocked blocked free BZ1 earthing switch OFF OFF ON OFF ON Interlocking lev...

Page 21: ...it breaker in OFF Energy storing device released Manual charging 1 Turn slide in the insertion opening to the left and insert crank 2 Perform approx 40 turns clock wise until position indicator charged appears starting of motor during this procedure does not involve danger 3 Remove crank and keep it in a safe place Charging by means of a motor The energy storing device is charged automatically as ...

Page 22: ...rating Energy storing device ON OFF sequence closing spring Switch position 1 released OFF released none released 2 charged OFF is charged by C C O 3 released ON charged O charged 4 charged ON is re charged O C O by C C Closing O Opening Opening Push the OFF button manually Actuate opening release secon dary release or undervoltage release electrical Position indicator indicates the OFF position ...

Page 23: ...urn interrogating lever to release the appropriate insertion opening 2 Insert crank and turn it clockwise 10 times The position indicator shows ON 3 Remove crank Switching OFF manually 1 Turn interrogating lever to release the appropriate insertion opening 2 Insert crank and turn it counter clockwise 10 times The position indicator shows OFF 3 Remove crank Important Motor drive optional The motor ...

Page 24: ... disconnector 3 Switch on earthing switch The circuit breaker is switched ON automatically Feeder EARTHED Switching on a bus section coupler in 2 panel widths Initial position bus section coupler OFF 1 Switch on both disconnectors 2 Switch on circuit breaker For switching off reverse the above sequence of operations Fig 5 17 Feeder EARTHED Fig 5 18 Feeder ON Important For all switching operations ...

Page 25: ...ton and swing detachable lever approx 20 out of its locked position see symbol indicating the actuating direction 3 Then continue to actuate the lever speedily with both hands until the earthing switch is chan ged over Total operating angle approx 90 4 Remove detachable lever Fig 5 23 Set earthing switch on busbar end to OFF 1 Unlocking button 2 Actuating direction 3 Position indicator 4 Detachabl...

Page 26: ...earthing the right hand busbar section proceed analogously Fig 5 27 Bus section coupler OFF Fig 5 28 Bus section coupler left hand busbar section EARTHED left hand panel right hand panel left hand panel right hand panel Earthing the busbar by means of an outgoing feeder via its circuit breaker Initial position Feeder EARTHED 1 Remove cable and connect eart hing device 2 Switch off earthing switch ...

Page 27: ...s former earthed 3 Lock locating pin into bore hole it must not be left in an interme diate position Fig 5 29 Isolating device for voltage transformer on the outgoing feeder double phase design 1 Locating pin 2 Lever 3 Position indication Abtrennvorrichtung für Spannungs wandler Disconnector for voltage transformer geerdet earthing Abtrennvorrichtung für Spannungs wandler Disconnector for voltage ...

Page 28: ...Make sure that the distance between the metallic com ponents of the test adapter and the earthed subconstruction of the switchgear is sufficiently dimen sioned 7 Switchgear panel in test position The circuit breaker is switched off by actuation of the earthing switch towards OFF Turn interrogating lever earthing switch and insert the crank Turn crank counter clockwise by approx 1 turn until the ci...

Page 29: ...onitoring the insulating gas Density gauge The density of the insulating gas is monitored by a pressure indication which is referred to an insulating gas temperature of 20 C The pressure indication on the den sity gauge is temperature compen sated via a temperature probe in the appropriate compartment If the insu lating gas temperature changes the indication remains constant Tolerance of indicatio...

Page 30: ... excessive filling pressure to rated filling pressure Dielectric state of insulating gas compartment The insulating level is not restricted up to the warning threshold main warning and cor responds to the data on the rating plate Reduced insulating level The insulating level corresponds to a rated lightning impulse withstand voltage of 95 kV The insulating properties may be impaired due to penetra...

Page 31: ...als must be adapted to the actual con ditions In case of soiling the switchgear panels must be cleaned by qualified staff In case of doubt or if deviations from the WI switchgear s proper working order are detected the manufacturer should be contacted Important Only specialist electricians who are familiar with WI switchgear are allowed to perform maintenance work Warning Comply with the safety pr...

Page 32: ...m the switchgear front end 1 To this effect remove the slotted screws of the interrogating levers one per lever and of the front cover 4 ea 2 Remove interrogating levers Remove the front cover by lifting it forward Access to the disconnecting and earthing switch drive is facilitated if the front cover of the right hand adjacent panel is also removed Once maintenance work has been completed reverse...

Page 33: ...ent use sparingly just moisten points of lubrication Apply a thin film of lubricant KL e g using a paint brush Liquid lubricant FL for bearings articulations and guide assemblies Pour drops of liquid lubricant oil can drip feed lubricator into the bearing gap Liquid lubricant gets between the bearing surfaces due to the capillary effect In case of inaccessible lubrication points use an extension t...

Page 34: ...34 Fig 8 4 Disconnector and earthing switch drive points of lubrication of bus sectionalizer analogously ...

Page 35: ...ft paint brush and detergent use sparingly just moisten points of lubrication Apply a thin film of lubricant KL e g using a paint brush Liquid lubricant FL for bearings articulations and guide assemblies Pour drops of liquid lubricant oil can drip feed lubricator into the bearing gap Liquid lubricant gets between the bearing surfaces due to the capillary effect In case of inaccessible lubrication ...

Page 36: ...tage transformer approx 60 kg and insert the transformer into the Plattform lifter with wooden insert see Fig 8 7 Clean contact surface and sealing area in the inner cone connection bushing and of contact surface insulating and control section of the voltage transformer thoroughly with a lint free cloth Grease the contact surface of the voltage transformer uniformly with lubricant KL ST 312 111 83...

Page 37: ...ufacturer of the voltage transformer see Fig 8 8 Move Plattformlifter ahead of the opening of inner cone connection bushing Pay attention to exact centring of inner cone connection bushing contact side of voltage transformer see Fig 8 12 For the finishing cen timetres mount assembly fixture 2 thread rods M12 inter mediate section washers and spring washers M12 Fix hex nuts alternately by this the ...

Page 38: ...circuit breaking current are indicated on the name plate Fig 8 14 Name plate Ir Rated normal current Isc Rated short circuit breaking current Breaking current Ia kA Number of breaking operations n Rated normal current 1250 A 30000 10000 5000 1000 500 100 50 10 0 1 1 1 25 3 5 10 20 25 31 5 63 10 50 100 500 1000 5000 10000 30000 1 0 1 1 25 3 5 10 20 25 31 5 63 Corriente normal de régimen 1250 A Corr...

Page 39: ...g 9 2 Auxiliary products The auxiliary products are available from the manufacturer Warning Risk of injury if the auxiliary products are handled improperly Comply with the safety data sheets of the auxiliary products Ref Cleaning agent 1 l can S 008 152 Lubricant KL 0 5 kg can ST 312 111 835 Liquid lubricant FL 0 5 l can S 008 153 The use of other auxiliary products is not admissible 9 3 Accessori...

Page 40: ...40 Notes ...

Page 41: ...41 Notes ...

Page 42: ...42 Notes ...

Page 43: ......

Page 44: ...go and any alternative version thereof are trademarks and service marks of AREVA The other names mentioned registered or not are the property of their respective companies 389191982 RCS PARIS AREVA T D Worldwide Contact Centre http www areva td com contactcentre Tel 44 0 1785 250 070 ...

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Areva T&D WI, Operating Instructions Manual, Page: 18 / 44

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