Siemens 3AK, 3AK1 Operating Instructions Manual
© 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
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For your safety
Signal terms and defini-
tions
Hazards are classified in accordance with ISO 3864-2 using the following keywords:
• 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:
Qualified personnel are, for the purposes of this manual or the warning notices on the vacuum circuit-
breaker module, persons who are familiar with the transport, storage, placement,
assembly, commissioning, operation and maintenance of the product and have the
qualifications corresponding to their activity, such as:
• training and authorization to energise, de-energise, clear, 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 to indicate a potentially hazardous situation which,
if not avoided, could result in death or serious injury.
CAUTION
signal word used to indicate a potentially hazardous situation which,
if not avoided, could result in minor or moderate injury.
Note
indicates a potentially damaging situation.
If the damaging situation is not avoided, the product or something in its vicinity
may sustain damage.
Note
Product liability claims are upheld only if the replacement of the purchased spare
parts is performed by personnel that have been trained and certified by Siemens.
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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 ........................................................................................... ... ... ... .... 12
Scope of delivery ................................................................................................................................. ... ... ... .... 12
Description ....................................................................................................................................................... 13
Design ....................................... ................................................. .......................................................... ... ... ....... 13
Locking devices ...................................................................................................................................... ... ... .... 25
Rating plate .................................. .... ... ... ... .... ....................................................................................... ... ... ... .... 27
Technical data ................................................................................................................................................... 27
Ambient conditions ............................................................................................................................................ 28
Installation 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
Maintenance and servicing ........................................................................................................................ ... .... 47
Vacuum interrupter service life ........................................ ... ... .... ... ... ... ............................................. .... ... ... ... .... 50
Accessories and spare parts ............................................................................................................................. 50
Manufacturer's product liability ...................................................................................................................... .... 51
Disposal ............................................................................................................................................................ 51
Service ................................... ............................................................................. .............................................. 51
Index of keywords ......................................................................................................................................... 53
Legend for all pages ..................................................................................................................................... 55
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Transport, storage and packing
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Transport, storage and packing
Transport
Transport weight Refer to the delivery slip for the weight of the transport unit.
Place the transport unit on a level, non-slip and pressure-resistant surface for intermediate storage.
Transport vacuum circuit-breaker in the original transport unit up to the installation
site or storage location.
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.
Observe the loads specified on the transport unit.
Note
Secure load
For transport, secure the load in such a way that the transport unit is not at risk.
Fig. 1 Transporting the pallet with carton
Transport, storage and packing
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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.
After receipt of delivery:
Checking the transport
unit
• Check transport unit for damage.
• Major damage must be documented photographically.
• Ensure that any damage to the transport unit is confirmed by the transport company.
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 t o be reused and
because of the belt straps located underneath.
Belt straps could be severed on the pallet floor when cutting open the carton.
The vacuum circuit-breaker module is attached to the pallet with belt straps. It is
not possible to transport the vacuum circuit-breaker module on the pallet without
using belt straps (see Fig. 4).
Fig. 2 Removing the carton
Transport, storage and packing
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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.
• Remove film from the vacuum circuit-breaker module.
• Check the delivery is complete.
• Check vacuum circuit-breaker module for damage.
• If the vacuum circuit-breaker module is damaged, ship it back in the transport
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.
Send it back in its original transport unit (see “Reusing the transport unit”,
page 8).
Note
Carrying straps may scrape along the vacuum circuit-breaker module and damage it.
If necessary, cover carrying straps with edge protection.
Fig. 3 Removing the film Fig. 4 Transporting with pallet possible
Transport, storage and packing
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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.
• Carefully lift vacuum circuit-breaker module.
• Transport to installation site or leave suspended from crane for further work
steps.
Reusing the transport unit
Reusing the transport unit To transport the vacuum circuit-breaker modu le again, the pallet with carton and
most of the components can be reused.
Do not reuse severed tensioning belts or plastic wrap.
Pack the vacuum circuit-breaker module in reverse 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 ap propriate tools.
• Cover with film and seal with adhesive tape.
• Attach accessories pack.
• Attach carton securely to the pallet floor.
• Before returning to the factory, ask the responsible sales representative for a
returned goods number (see also “Service”, on page 51).
• When returning a vacuum circuit-breaker module, always indicate the type and
serial number (see “Rating plate” on page 27).
Fig. 5 Removing the tensioning belts Fig. 6 Lifting the vacuum circuit-breaker module
Note
If necessary, keep accessory pack on hand for the installation.
Transport, storage and packing
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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 cir cuit-breaker module
can be stored for up to a year in its transport unit.
If the storage conditions are no t met, the vacuum circuit-brea ker module cannot
be 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. Furt her storage may necessitate fr esh corrosion
protection, and it must be ensured that the vacuum circuit-breaker modu le cannot
be damaged.
Storage room Transport unit Storage
time
Temperature
range
Comments Number of
units per
stack
Enclosed, dry, well
ventilated and as
free from dust as
possible, with a relative humidity of less
than 60 %.
unopened
max.
6months
-40°C to +55°C — max. 4
unopened
max.
1 year
-5 °C to +40 °C — max. 4
open over 1 year -5 °C to +40 °C
if necessary,
with new corrosion protection
—
Transport, storage and packing
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General information
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General information
Smooth and safe operation of this device requires proper transport and storage, a nd
professional installation and assembly, as well as careful operation and maintenance.
The basic version and all listed configurations of the vacuum circuit-breaker modules are type-tested devices as per IEC (3AK3 as per IEEE).
Range of application
3AK vacuum circuit-breaker modules are 3-pole interior circuit-breakers for a rated
voltage range of 7.2 kV - 17.5 kV.
Under normal operating conditions, th e vacuum circuit-brea ker modules are maintenance-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:
• Three-phase motors for reversing, turning and direct operation
• Transformers
• Capacitors
• Generators
• Resistor consumers
Suitable for high frequency 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 be the
result.
Only personnel with the relevant qualifications may work on or in the vicinity of
this device. These personnel must be familiar with all the warnings and servicing
measures specified in these operating instructions.
Note
In the event of subsequent attachments or integrations, e. g. locking parts in connection with switchgears, ensure that
• fast-moving parts are not additionally loaded with mass or force, and
• additional parts have sufficient clearance, especially from moving and live
parts.
If vacuum circuit-breaker modules are to be equipped with additional functions by
the customer, we recommend consulting the factory, since tried and tested solutions are frequently available (see also “Additional equipment”, on page17).
General information
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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
Description
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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
15. Pole plate 90. Cartridge insert
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 99. Indication of the operating and disconnected position of the withdrawable part
84. Mounting rail
Description
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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.).
Each of the 3 pole assemblies is supported by the pole columns (23.), which are
screwed to the pole plate (15.).
Contact system in the vacuum interrupters
A slight change in the contact stroke that occurs over the entire useful life of the vacuum 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. Withdrawable part
23. Pole column 84. Mounting rail
26. Earth terminal 87. Coding
27. Upper terminal 90. Cartridge insert
29. Lower terminal 93. Locking pin
30. Interrupter 109. Coupling of the earthing switch drive
40. Lower interrupter support
Description
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Mechanism box The mechanism box (60.) contains all the electrical and mechanical components
required to switch the vacuum circuit-breaker module on or off. In su lating op era ting
rods (48.) transfer the switching movement to the pole assemblies.
The mechanism box is closed with a removable cover (60.1).
There are openings in the cover (60.1) for the operating and indicator elements.
Functions The CLOSE pushbutton (53.) is used to close the vacuum cir cuit-breaker module.
The motor (50.4) immediately charges the closing spring (62.). If the supply voltage
for 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 th e CLOSED or OPEN state. The operating cycle
counter (58.) indicates the number of operating cycles. An operating cycle consists
of one closing and one opening. The rating plate (51.) is attached to the pole plate
(15.).
Fig. 9 Operating and indicator elements
50.1 Opening for hand crank 58. Operating cycle counter
51. Rating plate 59. Position indicator CLOSED-OPEN
53. CLOSE pushbutton 60.1 Cover
54. OPEN pushbutton a) Tightening torque Md = 10 Nm
55. Spring state indicator
Description
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Fig. 10 Opened mechanism box
50.2 Gear unit 60. Mechanism box
50.4 Motor M1 61. Dashpot
50.4.1 Position switch 62. Closing spring
50.5 Hand crank coupling 63. Circuit-breaker shaft
53.1 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. Position indicator CLOSED-OPEN
Description
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Equipment
Basic equipment The basic equipment of the 3AK vacuum circuit-breaker module contains:
Additional equipment Every 3AK vacuum circuit-breaker module can also be fitted with the following
equipment:
In addition to the serial shunt release (Y1), the vacuum circuit-breaker module can
be equipped with a maximum of 2 releases of the type 3AX11.
For the permitted possible combinations of the additional equipment as well as special designs, refer to catalogue HG11, or contact the responsible sales representative.
Motor (M1)
Contactor relay (electrical anti-pumpin g de vic e) (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 closing and opening
Mechanical locking device
Shunt release
1)
3AX1101
1) Subsequent installation possible
(Y2, Y3)
Transformer-operated release 3AX1102
1)
(Y4, Y5)
Transformer-operated release 3AX1104 (0.1 AC)
1)
(Y6)
Undervoltage release 3AX1103
1)
(Y7)
Heater (condensation water protection)
1)
(R01)
Electrical manual closing
2)
Priority opening
2)
2) No subsequent installation possible
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