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Siemens 3AK, Operating Instructions Manual

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Siemens 3AK Operating Instructions Manual Download Page 12

General information

12

9229 9923 176 0B

2013-09-09

Standards

The 3AK vacuum circuit-breaker modules comply with the regulations:

•

IEC 62271-100, 

•

IEC 62271-1, 

•

IEC 60265-1

•

IEEE C37.013 (only 3AK3).

All 3AK vacuum circuit-breaker modules comply with the specifications for C2-, E2-
and M2-class circuit-breakers in accordance with IEC 62271-100.

Design approval as per X-Ray Ordinance

The vacuum interrupters installed in the vacuum circuit-breaker modules are of a
design approved under the X-Ray Ordinance (RöV) of the Federal Republic of Ger-
many. 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:
•

3AK Vacuum circuit-breaker module

•

Hand crank for circuit-breaker 3AX 1530-2B (optional)

•

Traversing crank with hand screen for disconnecting component 3AX 1531-4B
(optional)

•

Operating tool for the earthing switch (manual operation) 3AX1531-3C
(optional)

•

Operating tool for the earthing switch (motor operation) 3AX1531-3D (optional)

•

Operating instructions

•

Circuit-breaker-specific circuit diagrams

Summary of Contents for 3AK

Page 1: ... Siemens AG 2006 All rights reserved 3AK Vacuum circuit breaker module 3AK1 and 3AK3 OPERATING INSTRUCTIONS Order no 9229 9923 176 0B Ordering location IC LMV LP PO P C41 AG 09 2013 en ...

Page 2: ...r earth 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 ...

Page 3: ...tallation altitudes 28 Switching times 29 Circuit diagrams 30 Mounting 35 Attachment in the switching cubicle 35 Coding 36 Earthing 37 Fitting the vacuum circuit breaker module 38 Moving the vacuum circuit breaker module into operating position 40 Electrical connection of the prime conductor 41 Operation 43 Commissioning 43 First closing operation 44 Closing 45 Opening 45 Maintenance 47 Maintenanc...

Page 4: ...4 9229 9923 176 0B 2013 09 09 Blank page ...

Page 5: ...cation Transporting with crane 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 Ob...

Page 6: ...ansport com pany Unpacking Working equipment Required tools Knife scissors Lifting equipment with lifting gear Pliers or lever 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 damage the carton since it is designed to be reused and because of the belt straps located underneath Belt straps could...

Page 7: ...unit see Reusing the transport unit on page 8 Transporting with pallet without carton The vacuum circuit breaker module 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 S...

Page 8: ...rse order If the transport bracket was already removed re mount in reverse order see Delivery state with transport bracket on page 36 The transport bracket serves to lock the withdrawable part in place in the cartridge insert during transport Attach the vacuum circuit breaker module safely to the pallet using the appropri ate tools Cover with film and seal with adhesive tape Attach accessories pac...

Page 9: ...e stored in the transport unit any longer than 6 months If storage of longer than one year is planned unpack the vacuum circuit breaker module from the transport unit Further storage may necessitate fresh corrosion protection and it must be ensured that the vacuum circuit breaker module cannot be damaged Storage room Transport unit Storage time Temperature range Comments Number of units per stack ...

Page 10: ...Transport storage and packing 10 9229 9923 176 0B 2013 09 09 Blank page ...

Page 11: ...requency of operation and unlimited on time 3AK vacuum circuit breaker modules operate in continuous periodic and short term operation 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...

Page 12: ...n approved under the X Ray Ordinance RöV of the Federal Republic of Ger many 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 3AK Vacuum circuit breaker module Hand crank for circuit breaker 3AX 1530 2B optional Traversing crank with hand screen for di...

Page 13: ...rt 19 Pole assembly complete 93 Locking pin 51 Rating plate 95 Unlocking lever of the cartridge insert 60 Mechanism box 96 Actuating opening for manually operating the earthing switch optional 60 3 Transportation eye 97 Position indicator of the earthing switch optional 80 Withdrawable part of the cartridge insert 98 Actuating opening for manually operating the withdrawable part 81 Locking bracket...

Page 14: ...5 Contact system in the vacuum interrupters A slight change in the contact stroke that occurs over the entire useful life of the vac uum interrupter has no effect on its function There is no need for a status indicator for the contact system Fig 8 Pole side 15 Pole plate 48 Insulating operating rod 20 Upper interrupter support 68 7 Automatically coupling low voltage plug 21 Break contact 80 Withdr...

Page 15: ...or the motor fails the closing spring can 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 coupling 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 o...

Page 16: ... Closing solenoid Y9 64 Opening spring 54 1 Shunt release Y1 66 Closing damper 54 2 Shunt release Y2 68 Auxiliary switch S1 54 3 Transformer operated release Y4 68 1 Operating rod for auxiliary switch S1 54 4 Undervoltage release Y7 69 Contactor relay K1 54 5 Transformer operated release 0 1 Ws Y6 71 Heater condensation water protection 55 Spring state indicator 58 Operating cycle counter 59 Posit...

Page 17: ...otor M1 Contactor relay electrical anti pumping device K1 Closing 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 automatically coupling low voltage plug 64 pole X0 Operating cycle counter Mechanical anti pumping device Mechanical manual c...

Page 18: ...arging time the motor temporarily oper ates in the overload range See Fig 12 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 module and must be ordered separately Fig 11 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 Recommende...

Page 19: ... against overvoltage Power consumption is approximately 140 W VA Fig 14 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 module The 1st shunt release Y1 is not designed for continuous operation and is automatically deactivated wit...

Page 20: ...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 16 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 ...

Page 21: ...closing spring is charged S41 S42 Position switches report charging state Fig 18 Position switch 50 4 1 The position switch S6 makes contact briefly when the vacuum circuit breaker module is opened by means of an electrical 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 19 Circuit breaker tripping ...

Page 22: ... 176 0B 2013 09 09 Low voltage interface X0 64 pole For connection of the control line the standard version of the vacuum circuit breaker modules is equipped with a 64 pole low voltage plug 68 7 Fig 20 Low voltage interface X0 ...

Page 23: ...ous operation Any nec essary varistors and rectifiers are integrated in the release Power consumption is approximately 60 W VA Fig 21 2nd 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 stor...

Page 24: ... method 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 module if the rated supply voltage drops to an inadmissible value Any necessary varistors and rectifiers are integrated in the release Power consumption 6 5 ...

Page 25: ... of the vacuum circuit breaker can be equipped with a locking device This is also the case for vacuum circuit breakers on switch gear trucks in withdrawable sections or with disconnectors Conditions The vacuum circuit breaker must only be switched on in operating or disconnected position The operating or disconnected position is the position of the vacuum circuit breaker on the switchgear truck or...

Page 26: ...he sensing and actuation component in the cartridge insert actuates the vacuum circuit breaker s mechanical locking device and reliably blocks closing of the vacuum circuit breaker Locking device of the cartridge insert When the unlocking lever 95 is fully folded down the cartridge insert is locked in the switchgear by the locking pins projecting from the side 93 With this the with drawable part i...

Page 27: ...reaking current Isc g Rated power frequency withstand voltage Ud h Rated lightning impulse withstand voltage Up i Quality 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 17 5 17 5 Rated operating current Ir A 1250 2000 2500 3150 4000 1250 2000 2500 Rated lig...

Page 28: ...hanically 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 30 Ambient conditions U U0 Ka U Rated withstand voltage U under standard reference atmosphere...

Page 29: ...le 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 1st shunt release Y1 60 ms 2nd and 3rd release Y2 Y4 Y6 Y7 55 ms Arcing time 15 ms Break time 1st shunt release Y1 75 ms 2nd and 3rd release Y2 Y4...

Page 30: ...following 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 S3 Position switch opens when closing spring is charged HE Manual closing S41 S42 Position switches signal charging status K1 Contactor relay anti pumping device S6 S7 Position switches for circuit breaker tripping signal M1 Motor X0 Low voltage interface...

Page 31: ...sw as per 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 35 Sample circuit diagram 64 pole part 1 of the vacuum circuit breaker a b c d ...

Page 32: ...9 09 1 Integrated varistor 2 Integrated rectifier for AC DC 100 V a 1st shunt release with 64 pole plug connector b 2nd shunt release with 64 pole plug connector Fig 36 Sample circuit diagram part 2 of the vacuum circuit breaker module a b ...

Page 33: ...tion connect L for direct 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 Circuit breaker tripping signal for 64 pole plug connector Fig 37 Sample circuit diagram part 3 of the vacuum circuit breaker module a b c d e ...

Page 34: ... auxiliary switch terminals Fig 39 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 ...

Page 35: ...ons 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 module is installed and commis sioned only by qualified personnel who are familiar with the operating instructions and observe the warning notices WARNING Risk of injury due to wrong transport means Using wrong t...

Page 36: ...ote The vacuum circuit breaker module can only be fitted into switchbays or switch cabinets whose coding allows for such fitting The coding must not be modified The mechanical coding of the circuit breaker and the cir cuit breaker room prevents that similar withdrawable sections with lower rated operating currents are fitted into switchbays with larger rated operating currents For example a circui...

Page 37: ...hing is required Place serrated washers under the screw heads when fastening the vacuum cir cuit breaker module in this case Connect the vacuum circuit breaker module under the cartridge insert 90 on the earth terminal 70 the high voltage protective earth as specified DIN EN 50341 For this connection to earth on the system must be present in the form of a clamp If the vacuum circuit breaker module...

Page 38: ...ting locking pins 93 Fit the vacuum circuit breaker module into the system s guide rails and push in as far as it will go Fully fold the withdrawable section unlocking lever 95 back down The locking pins 93 now secure the vacuum circuit breaker module in the switchgear Fig 45 Fitting the vacuum circuit breaker module Fig 46 Locking the vacuum circuit breaker module ...

Page 39: ...0 2 from the cover 60 1 Undo the two bottom screws 60 2 on the cover 60 1 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 module Replace the cover 60 1 in the reverse order and fasten the screws 60 2 with a tightening ...

Page 40: ...98 for manual operation of the withdrawable part 80 is enabled Moving the withdrawable section with traversing crank with hand screen 3AX1531 4B Through the actuating opening 98 Fit traversing crank with hand screen 108 onto the hexagon head Turn clockwise until the position indicator 99 for the withdrawable part 80 switches the symbol to While turning a progress indicator between these two symbol...

Page 41: ...e switchbay that do not deviate by more than 2 mm from the nominal dimensions The mating contacts can be purchased from the Siemens Service Center DANGER High voltage danger to life Test the vacuum circuit breaker module in the switchbay with high voltage applied only after faultless functioning has been ascertained see Commission ing on page 43 Note Grease the mating contacts with contact grease ...

Page 42: ...Mounting 42 9229 9923 176 0B 2013 09 09 Blank page ...

Page 43: ...ecurely 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 39 Test switching without supply voltage Charge the closing spring 62 with the hand crank 50 see Fi...

Page 44: ...cator 55 changes over WARNING Do not commission the vacuum circuit breaker module 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 module WARNING Risk of injury if hand cranks other than the original hand crank are used When the supply voltage is present the motor ...

Page 45: ...e 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 module 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 change Discharging ...

Page 46: ...nd crank optional for charging the closing spring by hand 106 Operating tool for the earthing switch manual operation 3AX1531 3C optional 107 Operating tool for the earthing switch motor operation 3AX1531 3D optional 108 Traversing crank with hand screen for withdrawable part 3AX 1531 4B optional ...

Page 47: ...gs that 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...

Page 48: ... at shorter inter vals For this only the following agents may be used on the individual functional parts of the circuit breaker module Lubricant Lubricants are available from the responsible Siemens representative 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 ...

Page 49: ...ing device 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 ...

Page 50: ...ified personnel Fig 55 Accessories available for order Always specify the vacuum circuit breaker module s type and serial no see Rating plate on page 27 when ordering spare parts CAUTION Risk of injury The vacuum circuit breaker module should be taken out of the switch cabinet or switchgear for servicing Separate vacuum circuit breaker module from the control feed voltage or switch it off and disc...

Page 51: ...e 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 module consists of the following materials Steel partly phosphatised galvanised and yellow chromated Copper partly silver plated Plastics epoxy resin polyamide polyester polycarbonate ABS PC mixtu...

Page 52: ...Maintenance 52 9229 9923 176 0B 2013 09 09 Blank page ...

Page 53: ...tective earth 37 I Indication of the operating and disconnected position of the withdrawable part 13 Installation altitudes 28 Insulating capacity 28 Interrupter 14 Interrupter support 14 Interrupter service life 50 Interrupter vacuum check 50 L Locking bracket 13 Locking device for the actuating openings optional 26 Locking devices 25 Locking pin 13 14 38 Locking the withdrawable section 26 Low v...

Page 54: ...Transformer operated release 0 1 Ws 16 Transport weight 5 Transportation eye 13 Traversing crank for withdrawable part 46 Traversing crank with hand screen 3AX1430 2C 40 Tulip contacts 41 Type designation 27 U Undervoltage release 16 17 24 Unlocking lever of the cartridge insert 13 V Vacuum interrupter contact system 14 W Withdrawable part 14 Withdrawable part of the cartridge insert 13 Withdrawab...

Page 55: ...LOSED OPEN 60 Mechanism box 60 1 Cover 60 3 Transportation eye 61 Dashpot 62 Closing spring 63 Circuit breaker shaft 64 Opening spring 66 Closing damper 68 Auxiliary switch S1 6NO 6NC 68 0 1 Extended auxiliary switch S1 12NO 12NC 68 1 Operating rod for auxiliary switch S1 68 7 Automatically coupling low voltage plug 69 Contactor relay K1 70 Earth terminal 71 Heater R01 condensation water protectio...

Page 56: ...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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