Siemens 3AK Operating Instructions Manual

Siemens 3AK Operating Instructions Manual

Vacuum circuit-breaker module


Vacuum circuit-breaker module
3AK1 and 3AK3
© Siemens AG 2006. All rights reserved.
Order no.: 9229 9923 176 0B
Ordering location: IC LMV LP PO P C41
AG 09.2013 en


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  • Page 1 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 © Siemens AG 2006. All rights reserved.
  • Page 2: For Your Safety

    For your safety Signal terms and defini- Hazards are classified in accordance with ISO 3864-2 using the following keywords: tions • DANGER, WARNING or CAUTION, where there is a risk of personal injury • NOTE, where there is a risk of material damage. Hazards are classified and indicated in the operating instructions and on the vacuum circuit-breaker module as follows: DANGER...
  • Page 3: Table Of Contents

    Table of contents For your safety ..............................2 Transport, storage and packing ......................... 5 Transport ................................5 Unpacking ................................6 Reusing the transport unit ........................... 8 Storage ................................9 General information ............................11 Range of application ............................11 Standards ................................12 Design approval as per X-Ray Ordinance ......................
  • Page 4 Blank page 9229 9923 176 0B 2013-09-09...
  • Page 5: Transport, Storage And Packing

    Transport, storage and packing Transport, storage and packing Transport 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. Transport weight Refer to the delivery slip for the weight of the transport unit.
  • Page 6: Unpacking

    Transport, storage and packing Transporting with packing Transport the transport unit to the installation site or storage location • with a fork lift or • with sling gear suspended from a crane at an angle of twist of approx. 60° or with a spreader bar.
  • Page 7 Transport, storage and packing 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. Note Do not use the vacuum circuit-breaker if parts are broken, i.e.
  • Page 8: Reusing The Transport Unit

    Transport, storage and packing Fig. 5 Removing the tensioning belts Fig. 6 Lifting the vacuum circuit-breaker module Transporting without pallet • Removing tensioning belts. • Remove accessory pack, if applicable, and store safely in the packaging for later attachment. • Hang sling gear into the crane eyes.
  • Page 9: Storage

    Transport, storage and packing Storage Note Store the vacuum circuit-breaker module 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 module can be stored for up to a year in its transport unit.
  • Page 10 Transport, storage and packing Blank page 9229 9923 176 0B 2013-09-09...
  • Page 11: General Information

    Under normal operating conditions, the vacuum circuit-breaker modules are main- tenance-free up to 10 000 operating cycles. Intended use 3AK vacuum circuit-breaker modules are suitable for switching any type of alternat- ing current circuits under normal operating conditions, such as: •...
  • Page 12: Standards

    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-...
  • Page 13: Description

    Description Description Design The 3AK vacuum circuit-breaker module consists of • the mechanism box (60.), • the 3 pole assemblies (19.) with vacuum interrupters (30.), • the cartridge insert (90.) with withdrawable part (80.). Fig. 7 Operating mechanism side Pole plate...
  • Page 14 Description Pole assembly The pole assembly of the 3AK vacuum circuit-breaker module consists of • the upper interrupter support (20.), • with the upper terminal (27.) and the break contact (21.), • the vacuum interrupter (30.), • the lower interrupter support (40.) with the lower terminal (29.) and the break contact (21.).
  • Page 15 Description Mechanism box The mechanism box (60.) contains all the electrical and mechanical components required to switch the vacuum circuit-breaker module on or off. Insulating operating rods (48.) transfer the switching movement to the pole assemblies. The mechanism box is closed with a removable cover (60.1). Fig.
  • Page 16 Description Fig. 10 Opened mechanism box 50.2 Gear unit Mechanism box 50.4 Motor M1 Dashpot 50.4.1 Position switch Closing spring 50.5 Hand crank coupling Circuit-breaker shaft 53.1 Closing solenoid Y9 Opening spring 54.1 Shunt release Y1 Closing damper 54.2 Shunt release Y2 Auxiliary switch S1 54.3 Transformer-operated release Y4...
  • Page 17 Operating cycle counter Mechanical anti-pumping device Mechanical manual closing and opening Mechanical locking device Additional equipment Every 3AK vacuum circuit-breaker module can also be fitted with the following equipment: (Y2, Y3) Shunt release 3AX1101 (Y4, Y5) Transformer-operated release 3AX1102 (Y6) Transformer-operated release 3AX1104 (0.1 AC)
  • Page 18 Description Motor M1 After the supply voltage is applied and if the closing spring is discharged, the motor starts immediately and is automatically deactivated internally after charging has taken place. Power consumption, maximum: • in the event of direct voltage approx. 750 W •...
  • Page 19 Description Closing solenoid (Y9) 3AY1510 The closing solenoid Y9 unlatches the charged closing spring and switches the vacuum circuit-breaker module on electrically. It is available for DC or AC voltage. The closing solenoid Y9 is not designed for continuous operation and is automatically deactivated within the cir- cuit-breaker.
  • Page 20 Description Auxiliary switch S1 Two versions of the auxiliary switch S1 are available 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.
  • Page 21 Description Position switch S21, S22 Position switches (switch off the motor after charging) Position switch (opens when closing spring is charged) S41, S42 Position switches (report charging state) Fig. 18 Position switch (50.4.1) Circuit-breaker tripping signal, cut-out switch (S6, S7) The position switch S6 makes contact briefly when the vacuum circuit-breaker module is opened by means of an electrical release.
  • Page 22 Description Low-voltage interface X0, 64-pole Fig. 20 Low-voltage interface X0 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). 9229 9923 176 0B 2013-09-09...
  • Page 23 Description A further shunt release, transformer-operated release, undervoltage release or instantaneous release can be installed as a 2nd release. 2nd shunt release (Y2) 3AX1101 The second shunt release Y2 is installed whenever more than one shunt release is needed. In this version, the electrical “open” command is passed by means of a magnet armature to the “OPEN”...
  • Page 24 Description Undervoltage release (Y7) 3AX1103 Note The undervoltage release Y7 must only be operated with the supplied series resistor R1. Note For switching operations (mechanical or electrical), the undervoltage release 3AX1103… must be connected to control voltage, as otherwise closing is not pos- sible.
  • Page 25: Locking Devices

    Description Heater (condensation water protection) The heater limits condensation and corrosion of the vac- uum circuit-breaker module. To this end, the heater has to be connected to the sup- ply voltage (see circuit diagram included with the deliv- ery). The heater's surface temperature is at the most 180 °C. Power consumption 50 W Fig.
  • Page 26 Description Locking the vacuum circuit-breaker A sensing and actuation component in the cartridge insert detects the operating position (CLOSED/OPEN) of the vacuum circuit-breaker. CLOSED switching posi- If the vacuum circuit-breaker is closed, actuation of the system's sensing and actu- tion ation component in the cartridge insert is prevented.
  • Page 27: Rating Plate

    Quality control seal Year of manufacture m Rated operating current I r Rated short-circuit duration t k Fig. 28 Example – vacuum circuit-breaker module rating plate 3AK Mass m Rated operating sequence Classification to standard Technical data Rated voltage* U 17.5...
  • Page 28: Ambient Conditions

    Description Ambient conditions 3AK vacuum circuit-breaker modules are suitable for use in the following climate classes in accordance with IEC 60721, Part 3-3: Class • Climatic ambient conditions: 3Z2, • Biological ambient conditions: • Mechanical ambient conditions: • Chemically active substances: •...
  • Page 29: Switching Times

    Description Switching times 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, Y6, Y7) <...
  • Page 30: Circuit Diagrams

    Description Circuit diagrams The circuit diagrams show all the available components with their wiring options. Fig. 33 to Fig. 39 show some non-binding examples of vacuum circuit-breaker mod- ules. The circuit diagrams for the vacuum circuit-breaker module are compiled depending on your order.
  • Page 31 Description 1) Integrated varistor 2) Integrated rectifier for AC/DC ≥ 100 V 3) Line H07V-K1x2.5sw (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...
  • Page 32 Description 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 9229 9923 176 0B 2013-09-09...
  • Page 33 Description 1) Integrated varistor 2) Integrated rectifier for AC/DC ≥ 100 V 3) Attention: 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.
  • Page 34 Description The unassigned auxiliary switch terminals are wired up (as shown) with the 64-pole plug bottom. Normal auxiliary switch Extended auxiliary switch No wiring required if a) 2nd shunt release Y2 available b) Undervoltage release Y7 available Fig. 38 Example – auxiliary switch terminals System wiring Tripping via Tripping via NO con-...
  • Page 35: Mounting

    Before installing the vacuum circuit-breaker module, remove the transport aids (see “Unpacking” on page 6). Mounting position The 3AK vacuum circuit-breaker module can only be installed vertically (to the vac- uum interrupter), as an indoor withdrawable section and as an indoor fixed installa- tion.
  • Page 36: Coding

    Mounting Coding Note 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.
  • Page 37: Earthing

    Removal of the transport bracket Earthing Note If the 3AK vacuum circuit-breaker module is installed into an earthed metal frame and is connected permanently and electrically conductive, no separate earthing is required. Place serrated washers under the screw heads when fastening the vacuum cir- cuit-breaker module in this case.
  • Page 38: Fitting The Vacuum Circuit-Breaker Module

    Mounting Fitting the vacuum circuit-breaker module • Lift the withdrawable section unlocking lever (95.). This draws in the laterally projecting locking pins (93.). • Fit the vacuum circuit-breaker module into the system's guide rails and push in as far as it will go. •...
  • Page 39 Mounting Removing the transport securing device from the undervoltage release Undervoltage release (Y7) The vacuum circuit-breaker modules with an undervoltage release (Y7) 3AX1103 present? are supplied with a transport securing device. • Remove the two top screws (60.2) from the cover (60.1). •...
  • Page 40: Moving The Vacuum Circuit-Breaker Module Into Operating Position

    Mounting Moving the vacuum circuit-breaker module into operating posi- tion Note When moving, ensure that the vacuum circuit-breaker module is in following con- dition: • OPEN switching position • Closing spring discharged If the switchgear door is locked, the actuating opening (98.) for manual operation of the withdrawable part (80.) is enabled.
  • Page 41: Electrical Connection Of The Prime Conductor

    For this there must be mating contacts in the 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. Fig. 50 Tulip contacts...
  • Page 42 Mounting Blank page 9229 9923 176 0B 2013-09-09...
  • Page 43: Operation

    • Check through all of the items on the checklist and ensure correct functioning before commissioning. Commissioning Before commissioning, check the following points to ensure that the 3AK vacuum circuit-breaker module is functioning faultlessly:  Checklist Notes Does the information on the rating plate (see page 27) match the order data? Ensure correct operating voltage.
  • Page 44: First Closing Operation

    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. First closing operation If all functions have been checked and are ok, switch on high-voltage while observ- ing all of the safety regulations and operative requirements.
  • Page 45: Closing

    Operation The adapter (50.6) of the hand crank (50.) is designed in such a way that the hand crank becomes uncoupled when the motor supply voltage returns. Closing Provided there is no lock-out due to a mechanical locking device, send the closing command via the CLOSE pushbutton (53.) or the corresponding command element until the vacuum circuit-breaker module is closed and shows and signals the CLOSED position.
  • Page 46 Operation Operating tools 3AX1530-2B hand 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) Fig.
  • Page 47: Maintenance

    Maintenance Maintenance Maintenance and servicing 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*) •...
  • Page 48 Isoflex Topas L 32 Bearings and bearings of the auxiliary switch S1 Shell Tellus Oil 32 that are inaccessible in terms of greasing: Lubricants are available from the responsible Siemens representative: Order no. 180 g Isoflex Topas L 32 3AX11 33-3H...
  • Page 49 Maintenance   Isoflex Topas L 32 Shell Tellus Oil 32 Crankpin for sensing device actuation Bearing for deflection lever Curve contour Auxiliary switch Close-latch Circuit-breaker shaft bearing Deflection of auxiliary switch Opening spring bearing Opening spring guide Spring eyelet on closing spring Deflection of auxiliary switch OPEN-latch Curve for OPEN-latch...
  • Page 50: Vacuum Interrupter Service Life

    Maintenance Vacuum interrupter service life If switching operations occur frequently under overload or short circuit, the service life of the vacuum interrupters may be reached prematurely. Replace the interrupters after reaching the maximum permitted operating cycle number of 10 000 mechanical or electrical load setting changes (up to the rated cur- rent).
  • Page 51: Manufacturer's Product Liability

    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 Services at • Telephone: +49 180/5247000 • Fax: +49 180/5242471 or •...
  • Page 52 Maintenance Blank page 9229 9923 176 0B 2013-09-09...
  • Page 53: Index Of Keywords

    Index of keywords Index of keywords Accessories ............50 Indication of the operating and disconnected Accessories available for order ......50 position of the withdrawable part ......13 Accessory pack ............8 Installation altitudes ..........28 Actuating opening ..........40 Insulating capacity ..........
  • Page 54 Index of keywords Rated operating sequence ........27 Rated power frequency withstand voltage .... 27 Rated short-circuit breaking current ...... 27 Rated short-circuit duration ........27 Rated voltage ............27 Rating plate ........... 13 Scope of delivery ........... 12 – Shunt release .......
  • Page 55: Legend For All Pages

    Legend for all pages Legend for all pages Pole plate Opening spring Closing damper 16.1 Upper post insulator 16.2 Lower post insulator Auxiliary switch S1 (6NO+6NC) Pole assembly, complete 68.0.1 Extended auxiliary switch S1 (12NO + 12NC) Upper interrupter support 68.1 Operating rod (for auxiliary switch S1) Break contact...
  • 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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