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Maintenance

9229 9860 176 0E

57

2013-08-22

Manufacturer's product liability

The manufacturer's product liability shall be excluded if at least one of the following
criteria applies:

•

Original Siemens spare parts are not used.

•

Fitters carrying out replacements have not been trained and certified by Sie-
mens.

•

Parts have been incorrectly fitted or adjusted.

•

Adjustments are not made in accordance with Siemens specifications.

•

After installation and adjustment, no final test is performed with a tester
approved by Siemens including documentation of the test results.

To keep documentation complete, it is important that measurement results are sub-
mitted to the responsible sales representative.

Disposal

The materials of the vacuum circuit-breaker should be recycled. Disposal of the vac-
uum circuit-breaker with minimum environmental impact is possible on the basis of
existing legal regulations.

Metal

The circuit breaker's metal components can be recycled as mixed scrap, although it
is more environmentally sustainable to dismantle the unit as thoroughly as possible
into sorted scrap and residual mixed scrap.

Electronics

Electronic scrap must be disposed of in accordance with applicable regulations.

Materials

The vacuum circuit-breaker consists of the following materials:

•

Steel (partly phosphatised, galvanised and yellow chromated)

•

Copper (partly silver-plated)

•

Plastics (epoxy resin, polyamide, polyester, polycarbonate, ABS-PC mixture;
partly glass fibre reinforced)

•

Rubber materials

•

Ceramics

•

Lubricant

Packaging

If the packaging is no longer needed, it can be fully recycled.

Hazardous substances

When delivered by Siemens, the product does not contain any hazardous sub-
stances within the scope of the Hazardous Substances Ordnance applicable to the
territory of the Federal Republic of Germany. For operation outside the Federal
Republic of Germany, the applicable local laws and regulations must be complied
with.

Further information

Contact your Siemens Service Center if you require further information.

Service

For details of contacts for service work, consult Siemens IC LMV SE Service at
•

Telephone: +49 180/5247000

•

Fax: +49 180/5242471 or

•

on the Internet at the Web address: www.siemens.com/energy-support

•

by e-mail: [email protected]

•

or any local sales representative.

Siemens Parts

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Содержание 3AH3

Страница 1: ... Siemens AG 1996 All rights reserved 3AH3 Vacuum circuit breaker 3AH30 3AH33 OPERATING INSTRUCTIONS Order no 9229 9860 176 0E Ordering location IC LMV LP PO P C41 AG 08 2013 en Siemens Parts ...

Страница 2: ... and tag circuits and equipment in accordance with established safety practices training in the proper care and use of protective equipment in accordance with established safety practices training in providing first aid Product liability DANGER signal word used to indicate an imminently hazardous situation which if not avoided will result in death or serious injury WARNING signal word used to indi...

Страница 3: ...uctor 47 Operation 49 Commissioning 49 First closing operation 50 Closing 51 Opening 51 Maintenance 53 Maintenance and servicing 53 Interrupter service life 56 Accessories and spare parts 56 Manufacturer s product liability 57 Disposal 57 Service 57 Index of keywords 59 Legend for all pages 61 Note Sections with Addendum I II or III Sections with Addendum I refer to vacuum circuit breakers with a ...

Страница 4: ...4 9229 9860 176 0E 2013 08 22 Blank page ...

Страница 5: ...ane or fork lift WARNING Heavy transport weight Transport unit may fall and fail and sling gear may break Use lifting gear transporting and sling gear suited to the requirements and load carrying capacity Observe transport symbols Note Observe stacking height For transport no more than three constructionally identical transport units must be piled on top of each other Observe the loads specified o...

Страница 6: ...ting gear Pliers or lever Opening the transport unit Place the transport unit on a level non slip and pressure resistant surface Remove lifting gear or transport means Remove plastic wrap Lever out fasteners from the carton and lift off carton CAUTION Risk of injury from sharp edges Fasteners may break leaving sharp edges Always use a suitable tool to lever out fasteners Note Do not cut open or da...

Страница 7: ...n The vacuum circuit breaker can be transported with the pallet without the carton Thread carrying straps under the pallet or transport with fork lift Note Do not use the vacuum circuit breaker if parts are broken i e if you find cracks flaking bent metal parts damaged plug in contacts tears or bare cables Send it back in its original transport unit see Reusing the transport unit page 15 Note Carr...

Страница 8: ... lift vacuum circuit breaker off the pallet just enough that pieces of square timber can be placed underneath Note When fastening the eyebolts to the pole heads ensure that the contact surfaces are not damaged Fig 6 Removing the tensioning belts Fig 7 Screwing in eyebolts and lifting the vacuum circuit breaker Note Place pieces of square timber onto the pallet in such a way that the insulating ope...

Страница 9: ...own onto the square timbers Hang further sling gear into the transport boreholes Transport to installation site or leave suspended from crane for further work steps Fig 8 Positioning the square timbers and setting down the vacuum circuit breaker Fig 9 Transporting without pallet Siemens Parts ...

Страница 10: ...s Knife scissors Screwdriver Open end wrench Lifting equipment with lifting gear Transporting with brackets Remove partitions and accessory pack and store safely in the packaging for later attachment Attach suitable bolt in the middle pole head Attach sling gear to bolt and to transport boreholes Fig 10 Removing partitions and film Fig 11 Lifting the vacuum circuit breaker ...

Страница 11: ...late and bracket screws from the pallet Lift the vacuum circuit breaker from the pallet Remove all screw connections from the brackets on the pole plate and the ter minals Remove angle plate below mechanism box Transport to installation site or leave suspended from crane for further work steps Fig 12 Removing screws from the pallet Fig 13 Removing the angle plate and brackets Siemens Parts ...

Страница 12: ...rface Remove lifting gear or transport means Unscrew all the screws from the cover and lift it off Remove partitions and store safely in the packaging for later attachment Note Do not use the vacuum circuit breaker if parts are broken i e if you find cracks flaking bent metal parts damaged plug in contacts tears or bare cables Send it back in its original transport unit see Reusing the transport u...

Страница 13: ...ve the side walls Remove accessory pack and store safely in the packaging for later attachment Remove film from the vacuum circuit breaker Check the vacuum circuit breaker for damage Undo tensioning belts if applicable Fig 16 Removing the supports Fig 17 Removing the side walls Fig 18 Taking out the accessory pack Fig 19 Removing the film Siemens Parts ...

Страница 14: ...bols Vertically lift out vacuum circuit breaker Transport to installation site or leave suspended from crane for further work steps CAUTION Crushing hazard Hands may get crushed when lifting out the vacuum circuit breaker Do not reach between the transport box and the vacuum circuit breaker Fig 20 Preparing for lifting out Fig 21 Lifting out Note Keep partitions and accessory pack ready for the in...

Страница 15: ... Note Store the vacuum circuit breaker in the following condition OPEN switching position Closing spring discharged Note Risk of corrosion damage if stored improperly If the storage conditions listed below are met the vacuum circuit breaker can be stored for up to a year in its transport unit If the storage conditions are not met the vacuum circuit breaker cannot be stored in the transport unit an...

Страница 16: ...Transport storage and packing 16 9229 9860 176 0E 2013 08 22 Blank page ...

Страница 17: ...eration and unlimited on time 3AH3 vacuum circuit breakers operate in continuous periodic and short term oper ation WARNING Dangerous voltage and mechanical movements When operating electrical devices certain parts will always be live and mechanical parts may move very quickly even when remotely controlled If the warnings are not observed serious injury or damage to material may be the result Only...

Страница 18: ...ers installed in the vacuum circuit breakers are of a design approved under the X Ray Ordinance RöV of the Federal Republic of Germany They meet the requirements of RöV of 8 January 1987 BGbl I page 114 8 and Annex II No 5 up to the level of the rated voltage stipulated according to DIN VDE IEC Scope of delivery Delivery includes Vacuum circuit breaker 3AH3 Hand crank for circuit breaker 3AX 1530 ...

Страница 19: ...ng struts 28 and the insulating operating rods 48 with contact pressure springs 49 required for contact actuation Each of the 3 pole assemblies 19 is carried by the cast resin post insulators 16 1 and 16 2 that are screwed to the pole plate 15 Fig 22 Side view 15 Pole plate 16 1 Upper post insulator 16 2 Lower post insulator 19 Pole assembly complete 28 Strut 30 Interrupter 48 Insulating operating...

Страница 20: ...the struts 28 relieve the vacuum interrupters of external forces Contact system in the interrupters A slight change in the contact stroke that occurs over the entire useful life of the interrupter has no effect on the function of the vacuum circuit breaker There is no need for a status indicator for the contact system Fig 23 Pole assembly I Fig 24 Pole assembly II and III 19 Pole assembly 29 1 Fle...

Страница 21: ...n be charged with a hand crank 50 There is an opening 50 1 for this in the cover behind which you will find the hand crank cou pling 50 5 of the gear unit 50 2 Indicators The charged state of the springs is indicated via the spring state indicator 55 The position indicator 59 shows the CLOSED or OPEN state The operating cycle counter 58 indicates the number of operating cycles An operating cycle c...

Страница 22: ...d release Y4 54 4 Undervoltage release Y7 54 5 Transformer operated release 0 1 Ws Y6 55 Spring state indicator 58 Operating cycle counter 59 Position indicator CLOSED OPEN 60 Mechanism box 61 Dashpot 62 Closing spring 63 Circuit breaker shaft 64 Opening spring 66 Closing damper 68 Auxiliary switch S1 68 1 Operating rod for auxiliary switch S1 68 7 Low voltage interface X0 69 Contactor relay K1 70...

Страница 23: ...sing solenoid Y9 shunt release Y1 Auxiliary switch optional S1 6NO 6NC 12NO 12NC Position switch for signal Closing spring charged S41 S42 Circuit breaker tripping signal cut out switch S6 S7 Low voltage interface optional X0 Plug connector with sleeve housing 64 pole Plug connector with sleeve housing 24 pole Terminal strip X1 Operating cycle counter Mechanical anti pumping device Mechanical manu...

Страница 24: ...arging time the motor temporarily oper ates in the overload range See Fig 28 for the rated cur rent for the required motor short circuit protection Note The motor protection devices are not included in the delivery of the vacuum circuit breaker and must be ordered separately Fig 27 Motor 50 4 Rated supply voltage U V DC 24 DC 48 DC 60 DC 110 AC 50 60 Hz 110 DC 220 AC 50 60 Hz 230 Recommended rated...

Страница 25: ...t overvoltage Power consumption is approximately 140 W VA Fig 30 Closing solenoid 53 1 In the case of the 1st shunt release Y1 the electrically fed tripping pulse is passed to the OPEN latch by means of a directly acting magnet armature thus switch ing off the vacuum circuit breaker The 1st shunt release Y1 is not designed for continuous operation and is automatically deactivated within the circui...

Страница 26: ...le for delivery with 6 or 12 NO NC contacts each Rated insulation voltage 250 V AC DC Insulation group C as per VDE 0110 Continuous current 10 A Closing capacity 50 A Fig 32 Auxiliary switch 68 AC 40 to 60 Hz DC Operating voltage Operating current Operating voltage Operating current U V I A U V I A Ohmic load Inductive load T 20 ms Up to 230 10 24 10 10 48 10 9 60 9 7 110 5 4 220 2 5 2 ...

Страница 27: ...ing spring is charged S41 S42 Position switches report charging state Fig 34 Position switch 50 4 1 The position switch S6 makes contact briefly when the vacuum circuit breaker is opened by means of an elec trical release This contacting can be used for a signal In the event of intentional mechanical opening the cut out switch S7 interrupts the contacting Fig 35 Circuit breaker tripping signal Sie...

Страница 28: ...4 pole plug 68 7 1 for the external terminal is suitable for crimp termination of control lines with a nominal cross section of 1 5 mm2 Terminal strip optional Instead of the 64 pole plug 68 7 1 a terminal strip 68 7 2 can be ordered as inter face to the terminal at the customer s site Assignment of the terminals is done according to the circuit diagram supplied Fig 36 Low voltage interface X0 Fig...

Страница 29: ...ration Any necessary varis tors and rectifiers are integrated in the release Power consumption is approximately 60 W VA Fig 38 2 Shunt release 54 2 The transformer operated releases Y4 Y5 or Y6 consist of an energy storage mechanism an unlatching fixture and an electromagnetic system If the tripping current is exceeded 90 of the transformer operated release s rated current the energy storage mecha...

Страница 30: ...thod is used the solenoid coil s short circuit current is limited by the built in resistor The undervoltage release Y7 can also be connected to voltage transformers The undervoltage release Y7 automatically trips the vacuum circuit breaker if the rated supply voltage drops to an inadmissible value Any necessary varistors and rectifiers are integrated in the release Power consumption 6 5 W or 7 5 V...

Страница 31: ...ommand element from the control room With on site closing this permits taking into account system related interlocking and allows you to prevent unintentional closing by the control room for example This allows for interlocking the vacuum circuit breaker module for example via the aux iliary contact of a disconnector Vacuum circuit breakers with electrical manual closing cannot be switched mechani...

Страница 32: ...e switchgear and the vacuum circuit breaker contacts overlap completely with the switchgear counter contacts Mechanical locking device optional with spring drive mechanism A sensing and actuation component b on the system side detects the operating position CLOSED OPEN of the vacuum circuit breaker CLOSED switching posi tion If the vacuum circuit breaker is closed actuation of the system s sensing...

Страница 33: ...elease is brought into operating position b opening is reliably done via the mechanics of the vacuum circuit breakers and the closing latch is cancelled A no load switching operation is done in the course of this Only now is it possible to undo the plug of the low voltage interface a b a Idle position CLOSED switching position b Operating position OPEN switching position 68 7 Low voltage interface...

Страница 34: ...bly pre vented as well Spring dump position In the second position spring dump position c the vacuum circuit breaker remains in open condition In addition when actuating the locking device in the second position the closing spring is discharged by a no load switching operation The closing and the opening springs are now discharged and hence all of the energy storages of the vacuum circuit breaker ...

Страница 35: ...ity control seal k Year of manufacture m Rated operating current Ir n Rated short circuit duration tk o Mass m p Rated operating sequence r Classification to standard Rated voltage Ur kV 7 2 12 15 17 5 24 36 40 5 Rated operating current Ir A 1250 2500 3150 4000 2500 3150 4000 1250 2000 2500 3150 4000 2500 3150 4000 Rated lightning impulse withstand voltage peak value Up kV 60 75 95 95 110 125 170 ...

Страница 36: ...ically active substances 3S24 1 Peak value of the 24 hour means 35 C 2 Without ice formation and wind driven precipitation 3 Without occurrence of salt fog and simultaneous condensation 4 Restriction clean insulating parts 5 Average value measured over 24 hours 6 Average value measured over 1 month Fig 48 Ambient conditions U U0 Ka U Rated withstand voltage U under standard reference atmosphere U0...

Страница 37: ... pole during closing and the time when contact touch has been cancelled in all poles during subsequent opening Dead time period from the end of the current flow in all poles up to the start of cur rent flow in the first pole Closing time 75 ms Opening time 1 shunt release Y1 60 ms 2 and 3rd release Y2 Y4 Y6 Y7 55 ms Arcing time 15 ms Break time 1 shunt release Y1 75 ms 2 and 3rd release Y2 Y4 Y6 Y...

Страница 38: ...wing circuit diagrams Y1 Y2 Y4 Y4 Y5 Y6 Y7 Y7 OPEN release Y1 Y2 Y4 Y4 Y5 Y6 Y7 Y7 OPEN release extended auxiliary switch HA Manual opening HE Manual closing K1 Contactor relay anti pumping device M1 Motor P Energy storage mechanism R1 Resistor S1 Auxiliary switch S10 S11 Position switch mechanical anti pumping device S12 Position switch prevents electrical closing if there is a mechanical locking...

Страница 39: ...er EN 50525 2 31 when motors are used with DC 24 V 48 V and 60 V 4 Only if a mechanical closing lock is ordered at the same time a Motor winding for DC b Motor winding with rectifier for AC c Closing d Closing with anti pumping device Fig 53 Sample circuit diagram 64 pole part 1 of the vacuum circuit breaker a b c d Siemens Parts ...

Страница 40: ...ier for AC DC 100 V a 1st shunt release with 64 pole plug connector b 1st shunt release with 24 pole plug connector c 2nd shunt release with 64 pole plug connector d 2nd shunt release with 24 pole plug connector Fig 54 Sample circuit diagram part 2 of the vacuum circuit breaker a b c d ...

Страница 41: ... current DC a Undervoltage release b Low energy trip coil c 1st transformer operated release d Signal spring state with 64 pole plug connector e Signal spring state with 24 pole plug connector f Breaker tripping signal for 64 pole plug connector Fig 55 Sample circuit diagram part 3 of the vacuum circuit breaker a b c d e f Siemens Parts ...

Страница 42: ... auxiliary switch terminals Fig 57 Sample switching operation for connection of the undervoltage release Y7 Normal auxiliary switch Extended auxiliary switch No wiring required if a 2nd shunt release Y2 available b Undervoltage release Y7 available a b System wiring Tripping via NO con tact Tripping via NC contact System wiring Circuit breaker wiring ...

Страница 43: ...rming work on the switchgear de energise it and earth it The work described in the following sections must only be performed when the switchgear has been de energised Take safety measures to prevent reclosing Observe industrial safety regulations Ensure that the vacuum circuit breaker is installed and commissioned only by qualified personnel who are familiar with the operating instructions and obs...

Страница 44: ... fixing holes on the pole plate 15 and on the mechanism box 60 for the various types of installation Use M12 screws strength class 8 8 for fastening The binding dimension draw ings are relevant The framework must be made to suit the operating conditions and have sufficient load bearing capacity and stability bores for M12 screws Fig 59 Example of mounted partitions Fig 60 Fastening options Fig 61 ...

Страница 45: ...her on the earth terminal 70 with 40 Nm Connect low voltage Connect the low voltage connecting cables in the customer s switch cabinet in such a way that safe operation as per supplied circuit diagram is guaranteed Note If the 3AH3 vacuum circuit breaker is installed into an earthed metal frame and is connected permanently and electrically conductive no separate earthing is required Place serrated...

Страница 46: ... 2 of the mechanism box Remove the two bottom screws 60 2 of the mechanism box until the cover 60 1 can be taken off Slightly tilt the cover 60 1 of the mechanism box and lift off Shift the locking screw of the striker from position A to B see reference note in mechanism box 60 of the vacuum circuit breaker Replace the cover 60 1 in the reverse order and fasten the screws with a tightening torque ...

Страница 47: ...lightly grease the bright contact areas with acid free Vaseline e g Shell Vaseline 8420 and screw together immediately DANGER High voltage danger to life Test the vacuum circuit breaker in the switchbay with high voltage applied only after faultless functioning has been ascertained see Commissioning on page 49 Note Grease the busbars with contact grease prior to mounting Fig 66 Cleaning the contac...

Страница 48: ... tightening the screws hold the nuts against tightening torque of 70 Nm with a suitable screwdriver or socket wrench Screw in depths in the upper and lower terminals See dimension drawings Note For vacuum circuit breakers with connecting bars it is recommended to use the stainless steel screws or non magnetisable screws included in the accessory pack Fig 68 Installing busbars flat Fig 69 Installin...

Страница 49: ...ction for tightness Check functioning of the auxiliary switches If necessary check and adjust customer s devices If there is an undervoltage release Y7 3AX1103 has the locking screw of the striker been shifted from position A to B see Removing the trans port securing device from the undervoltage release on page 46 Test switching without supply voltage Charge the closing spring 62 with the hand cra...

Страница 50: ...state indicator 55 changes over WARNING Do not commission the vacuum circuit breaker if there are malfunctions If the malfunctions or the damage cannot be remedied contact a sales represent ative or Siemens Service and if necessary send back the vacuum circuit breaker WARNING Risk of injury if hand cranks other than the original hand crank are used When the supply voltage is present the motor imme...

Страница 51: ...Change of the spring state indicator 55 Opening The opening spring 64 is charged during the closing operation To open send the opening command via the OPEN pushbutton 54 or the corre sponding command element until the vacuum circuit breaker is open and shows and signals the OPEN switching position Change of the position indicator 59 after electrical opening The spring state indicator 55 does not c...

Страница 52: ...Operation 52 9229 9860 176 0E 2013 08 22 Blank page ...

Страница 53: ...cannot be disassembled must not be washed out with a detergent prior to work DANGER High voltage danger to life Touching live parts is fatal or causes serious physical injury Before beginning maintenance work note the five safety rules for high voltage equipment specified in EN 50110 1 namely Isolate from the power supply Secure against reclosing Verify safe isolation from the power supply Earth a...

Страница 54: ... Lubricant Lubricants are available from the responsible Siemens representative Fig 72 Bearings and sliding surfaces of the pole side Bearings sliding surfaces Isoflex Topas L 32 Bearings and bearings of the auxiliary switch S1 that are inaccessible in terms of greasing Shell Tellus Oil 32 Order no 180 g Isoflex Topas L 32 3AX11 33 3H 1 kg Shell Tellus Oil 32 special oil 3AX11 33 2D 1 kg Isoflex T...

Страница 55: ...ice actuation b Bearing for deflection lever c Curve contour f Auxiliary switch d Close latch j Circuit breaker shaft bearing e Deflection of auxiliary switch p Opening spring bearing g Opening spring guide r Spring eyelet on closing spring h Deflection of auxiliary switch k OPEN latch l Curve for OPEN latch m End stop s Contact area of instantaneous release Siemens Parts ...

Страница 56: ...device operates reliably spare parts must be replaced only by trained and certified personnel Fig 74 Accessories available for order Always specify the vacuum circuit breaker s type and serial no see Rating plate on page 35 when ordering spare parts CAUTION Risk of injury The vacuum circuit breaker should be taken out of the switch cabinet or switch gear for servicing Separate vacuum circuit break...

Страница 57: ... thoroughly as possible into sorted scrap and residual mixed scrap Electronics Electronic scrap must be disposed of in accordance with applicable regulations Materials The vacuum circuit breaker consists of the following materials Steel partly phosphatised galvanised and yellow chromated Copper partly silver plated Plastics epoxy resin polyamide polyester polycarbonate ABS PC mixture partly glass ...

Страница 58: ...Maintenance 58 9229 9860 176 0E 2013 08 22 Blank page ...

Страница 59: ...vice life 56 Interrupter vacuum check 56 L Locking devices 32 Low voltage interface 22 23 M Mechanical anti pumping device 23 Mechanical locking device 23 32 Mechanical manual closing 23 31 Mechanical manual opening 23 Mechanism box 19 22 Motor 22 24 Mounting position 43 O Opening spring 22 Operating cycle counter 22 23 Operating position 32 Operating rod 22 P Plug connector with sleeve housing 23...

Страница 60: ...Index of keywords 60 9229 9860 176 0E 2013 08 22 Blank page ...

Страница 61: ...4 1 Shunt release Y1 54 2 Shunt release Y2 54 3 Transformer operated release Y4 54 4 Undervoltage release Y7 54 5 Transformer operated release 0 1 Ws Y6 55 Spring state indicator 55 1 Opening for spring state indicator 58 Operating cycle counter 58 1 Opening for operating cycle counter 59 Position indicator CLOSED OPEN 59 1 Opening for position indicator CLOSED OPEN 60 Mechanism box 60 1 Cover 61 ...

Страница 62: ...62 9229 9860 176 0E 2013 08 22 Blank page ...

Страница 63: ...9229 9860 176 0E 63 2013 08 22 Blank page Siemens Parts ...

Страница 64: ...Published by Siemens AG Infrastructure Cities Sector Low and Medium Voltage Division Medium Voltage Systems Schaltwerk Berlin Nonnendammallee 104 13629 Berlin ...

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