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Description

26

9229 9947 176 0C

2013-03-28

Undervoltage release (Y7) 3AX1103

The undervoltage release Y7 has an electromagnet system that has voltage
permanently applied to it when the vacuum circuit-breaker is in the closed state. If
the voltage drops below a certain value, the undervoltage release Y7 is unlatched,
thus initiating opening of the vacuum circuit-breaker via the stored energy
mechanism.

Random tripping of the undervoltage release Y7 is generally performed by an NC
contact in the tripping circuit, but can also be done with the aid of an NO contact by
short-circuiting the solenoid coil. In the case of this latter method, 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 VA

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
possible.

Fig. 34

Undervoltage release (54.4)

Fig. 35

Typical circuit for connection of the
undervoltage release Y7

R1 resistor
S1 auxiliary switch
Y7 undervoltage release

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Содержание 3AH47 series

Страница 1: ... Siemens AG 1996 All rights reserved 3AH47 Vacuum circuit breaker 17 5 kV 16 7 Hz and 27 5 kV 50 60 Hz OPERATING INSTRUCTIONS Order no 9229 9947 176 0C Ordering location IC LMV LP PO P C41 AG 03 2013 en ...

Страница 2: ...nd 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 in...

Страница 3: ... in the switching cubicle 39 Earthing 41 Electrical connection of the prime conductor 43 Operation 45 Commissioning 45 First closing operation 46 Closing 47 Opening 47 Maintenance 49 Maintenance and servicing 49 Maintenance plan 50 Vacuum interrupter service life 54 Accessories and spare parts 54 Manufacturer s product liability 55 Disposal 55 Service 55 Index of keywords 57 Legend for all pages 5...

Страница 4: ...4 9229 9947 176 0C 2013 03 28 Blank page ...

Страница 5: ...t with crane or fork lift WARNING Heavy transport weight Transport unit may fall and fail and sling gear may break Use means of lifting transporting and sling gear suited to the requirements and load carrying capacity Observe transport symbols Note Observe stacking height For transport not more than three constructionally identical transport units must be piled on top of each other Observe loads s...

Страница 6: ...the transport company Unpacking I Working equipment Required tools Knife scissors Lifting equipment with lifting gear Pliers or lever CAUTION Danger 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 carton since it is designed to be reused and because of the belt straps located underneath Belt straps ...

Страница 7: ...llet without carton The vacuum circuit breaker can be transported with the pallet without the carton Thread carrying belts 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 flakings bent metal parts damaged plug in contacts tears or bare cables Send it back in its original transport unit see Reusing the transport unit...

Страница 8: ...ts Carefully 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 eye bolts and lifting the vacuum circuit breaker Note Place pieces of square timber onto the pallet in such a way that the i...

Страница 9: ...re timbers Hang further sling gear into the transport boreholes Transport to installation site or 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 Note Keep accessory pack on hand for the installation ...

Страница 10: ...Remove all tensioning belts and bits of fastening wood Remove timber between pole plate and beam Hook crane hooks into the openings on the mechanism box Carefully lift vacuum circuit breaker Note Do not use the vacuum circuit breaker if parts are broken i e if you find cracks flakings bent metal parts damaged plug in contacts tears or bare cables Send it back in its original transport unit see Reu...

Страница 11: ...ransport to installation site or leave suspended from crane for further work steps CAUTION Crushing hazard The vacuum circuit breaker can tip during lifting and crush hands Do not reach between pole head and beam Reposition the vacuum circuit breaker Wear helmet and gloves Note The vacuum circuit breaker has a tilted transport position because the centre of gravity is situated outside of the mecha...

Страница 12: ...orage without carton Note Store the vacuum circuit breaker in the following condition OPEN position Closing spring relaxed 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 ...

Страница 13: ...ration and unlimited on time 3AH47 vacuum circuit breakers operate in continuous periodic and short time 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 ...

Страница 14: ...ay Ordinance The vacuum interrupters 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 3AH47 vacuum circuit breaker Hand c...

Страница 15: ...vacuum circuit breaker consists of the mechanism box 60 the pole assembly 19 with vacuum interrupter 30 the cast resin post insulators 16 1 and 16 2 with reinforcing struts 28 the insulating operating rods 48 with contact pressure springs 49 required for contact actuation Each pole assembly 19 is carried by the cast resin post insulators 16 1 and 16 2 that are screwed to the pole plate 15 Fig 16 S...

Страница 16: ...th flexible connector 29 1 as well as the angle lever 48 6 The centering 28 1 and the struts 28 relieve the vacuum interrupters of external forces Fig 17 Pole assembly 3AH47 84 Fig 18 Pole assembly 3AH47 57 19 Pole assembly 30 Vacuum interrupter 20 Upper interrupter support 38 Grading capacitor 27 Upper terminal 39 Pole gearing 28 Strut 39 1 Bearing block 28 1 Centering 40 Lower interrupter suppor...

Страница 17: ... 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 The OPEN pushbutton 54 is used to open the vacuum circuit breaker Indicators The charged state of the springs is indicated via the spring state indicator 5...

Страница 18: ... 1 Closing solenoid Y9 64 Opening spring 54 1 Shunt release Y1 66 Closing damper 54 2 Shunt release Y2 or 68 Auxiliary switch S1 Instantaneous release H83 Opt Y2 68 1 Operating rod for auxiliary switch S1 54 3 Transformer operated releases Y4 Y5 68 7 Low voltage interface X0 54 4 Undervoltage release Y7 69 Contactor relay K1 54 5 Transformer operated release 0 1 Ws Y6 70 Earth terminal 55 Spring s...

Страница 19: ...1 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 optional X0 Plug connector with sleeve housing 64 pin Plug connector with sleeve housing 24 pin Terminal strip Operating cycle counter Mechanical anti pumping device Mechanical manu...

Страница 20: ...rt charging time the motor sometimes operates in the overload range See Fig 22 for the rated voltage 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 21 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 rate...

Страница 21: ... against overvoltage Power consumption is approximately 140 W VA Fig 24 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 switching off the vacuum circuit breaker The 1st shunt release Y1 is not designed for continuous operation and is automatically deactivated within the ...

Страница 22: ...ble 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 26 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 23: ...en closing spring is charged S41 S42 Position switches report charging state Fig 28 Position switch 50 4 1 The position switch S6 makes contact briefly when the vacuum circuit breaker 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 29 Circuit breaker tripping sign...

Страница 24: ...64 pin 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 pin plug 68 7 1 a terminal strip 68 7 2 can be ordered as interface to the terminal at the customer s site Assignment of the terminals is done according to the circuit diagram supplied Fig 30 Low voltage interface X0 Fig 3...

Страница 25: ... continuous operation Any necessary varistors and rectifiers are integrated in the release Power consumption is approximately 60 W VA Fig 32 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 stor...

Страница 26: ...is latter method 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...

Страница 27: ...l applications especially designed for this purpose reach even 17 ms Fig 36 Instantaneous release H83 Opt Actuation The low internal resistance of the tripping coil normally does not allow direct operation at the supply voltage because the large current levels in particular from auxiliary switches cannot be controlled The release is thus fed from a capacitor bank with an electrolytic capacitor con...

Страница 28: ...nterlocking and allows you to prevent unintentional closing by the control room for example This allows for interlocking the vacuum circuit breaker for example via the auxiliary contact of a disconnector Vacuum circuit breakers with electrical manual closing cannot be switched mechanically Note When an instantaneous release H83 Opt is used no 3rd release can be ordered and used The capacitor tripp...

Страница 29: ...e switchgear and the vacuum circuit breaker contacts overlap completely with the switchgear counter contacts Mechanical interlock optional with spring drive mechanism An interrogation and actuation component b on the system side scans the operating position CLOSED OPEN of the vacuum circuit breaker CLOSED position If the vacuum circuit breaker is closed actuation of the system s interrogation and ...

Страница 30: ...dump position In the second position spring dump position c the vacuum circuit breaker remains in open state and is reliably secured against reclosing In addition when actuating the interlocking device in the second position the closing spring is relaxed by a no load switching operation The closing and the opening spring are now relaxed and hence all energy storages of the vacuum circuit breaker d...

Страница 31: ...d 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 17 5 27 5 27 5 Rated operating current Ir A 2000 2500 1250 2000 2500 1250 2000 2500 Rated lightning impulse withstand vol...

Страница 32: ...cally active substances 3S24 1 peak value of the 24 hour mean 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 42 Ambient conditions U U0 Ka U Rated withstand voltage U under standard reference atmosphere U0 R...

Страница 33: ...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 current flow in the first pole Closing time closing time 75 ms Opening time 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 releas...

Страница 34: ...the following circuit diagrams Y1 Y2 Y4 Y4 Y5 Y6 Y7 Y7 Release OPEN 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 breaker tripping signal M1 Motor X0 Low voltage interface P E...

Страница 35: ...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 47 Sample circuit diagram 64 pole part 1 of the vacuum circuit breaker a b c d ...

Страница 36: ...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 48 Sample circuit diagram part 2 of the vacuum circuit breaker a b c d ...

Страница 37: ... 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 Signal spring state with 24 pole plug connector f Breaker tripping signal for 64 pole plug connector Fig 49 Sample circuit diagram part 3 of the vacuum circuit breaker a b c d e f ...

Страница 38: ...iliary switch terminals Fig 51 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 contact Tripping via NC contact System wiring Circuit breaker wiring ...

Страница 39: ...ollowing sections must only be performed when the switchgear has been deenergized 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 observe the warning notices WARNING Risk of damage from wrong transport means Using wron...

Страница 40: ...m circuit breaker There are a total of 14 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 drawings are authoritative The framework must be made to suit the operating conditions and have sufficient load bearing capacity and stability bores for M12 screws Fig 52 Mounting position...

Страница 41: ...ead screw 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 3AH47 vacuum circuit breaker is installed into a earthed metal frame and is connected permanently and electrically conductive no separate earthing needs to be done Pla...

Страница 42: ...60 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 torqu...

Страница 43: ...rease 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 45 Note Grease the busbars with contact grease prior to mounting Fig 59 Cleaning the contact areas F...

Страница 44: ...ing 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 Fig 61 Installing busbars flat Fig 62 Installing busbars flat Note For vacuum circuit breakers with connecting bars it is recommended to use the stainless steel screws or non magnetisable screws included in the accessor...

Страница 45: ...minal strip plug connection for tight seat 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 transport securing device from the undervoltage release on page 42 Test switching without supply voltage Charge the closing sprin...

Страница 46: ... 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 Siemens representative 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 im...

Страница 47: ...omes visible 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 corresponding command element until the vacuum circuit breaker is open and shows and signals the OPEN position Change of the position indicator 59 after electrical opening The spring state indicator 55 does not...

Страница 48: ...Operation 48 9229 9947 176 0C 2013 03 28 Blank page ...

Страница 49: ...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 and short circuit Cover or cordon off neighboring live parts On the vacuum circuit br...

Страница 50: ...operating cycles 1 Vacuum circuit breaker 1 1 Clean insulating parts and outer parts Warm water household cleaners x Note 1 1 2 Check tripping system for unencumbered movement and grease as needed Isoflex Topas L 32 Shell Tellus oil 32 x with instantaneous release Note 2 3 1 3 Grease all bearing parts and sliding surfaces Perform 3 to 5 mechanical test switching operations after greasing Isoflex T...

Страница 51: ...ht that the tappet is easily moved 6 Grease all bearing parts and sliding surfaces on the pole side see Fig 66 Fig 66 Bearings and sliding surfaces of the pole side Grease all bearing parts and sliding surfaces of the operating mechanism see Fig 67 Order no 180 g Isoflex Topas L 32 3AX11 33 3H 1 kg Shell Tellus Öl 32 special oil 3AX11 33 2D 1 kg Isoflex Topas L 32 3AX11 33 3E Isoflex Topas L 32 t ...

Страница 52: ...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 ...

Страница 53: ...e vacuum interrupters is adjusted To check the synchronism the lengths of the charged contact pressure springs are compared on the closed vacuum circuit breaker If the difference is more than 2 mm the synchronism must be adjusted as follows Open the vacuum circuit breaker and separate the operating rods from the circuit breaker shaft in the operating mechanism The contacts of the vacuum interrupte...

Страница 54: ... that the device operates reliably spare parts must be replaced only by trained and certified personnel Fig 69 Accessories to be ordered Always specify the vacuum circuit breaker s type and serial no see Rating plate on page 31 when ordering spare parts VS 10047 48 60 000 VS 30029 30 VS 30040 41 VS 36025 L 30 000 CAUTION Risk of injury The vacuum circuit breaker should be taken out of the switch c...

Страница 55: ... mixed scrap residues is more environmentally sustainable Electronics Electronic scrap must be disposed of in accordance with applicable regulations Materials The vacuum circuit breaker consists of the following materials Steel partly phosphatized galvanized and yellow chromated Copper partly silver plated Plastics epoxy resin polyamide polyester polycarbonate ABS PC mixture partly fiberglass rein...

Страница 56: ...Maintenance 56 9229 9947 176 0C 2013 03 28 Blank page ...

Страница 57: ... operating rods 15 Interlocking devices 29 Interrupter support 16 L Low voltage interface 18 19 M Mechanical anti pumping device 19 Mechanical interlock 19 29 Mechanical manual closing 19 28 Mechanical manual opening 19 Mechanism box 15 18 Mechanism box opened 18 Motor 18 20 Mounting position 40 O Opening spring 18 Operating cycle counter 18 19 Operating position 29 Operating rod 18 P Pole assembl...

Страница 58: ...Index of keywords 58 9229 9947 176 0C 2013 03 28 Blank page ...

Страница 59: ...n 54 1 Shunt release Y1 54 2 Shunt release or instantaneous 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 Contact position indicator CLOSED OPEN 59 1 Opening for position indicator CLOSED ...

Страница 60: ...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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