Courtesy of NationalSwitchgear.com
Page 1: ...umCircuitBreakers Type FSV and MSV w w 1 V S16M6NS SI6HENS 1 r s I h i 4 SttSil V W Vi H TJ 3 S3 i XX m r IrWl v V Ws 5 r t m s V i i 1 ie 1 mt i i j f I J t a Tjt Ml i X mm sii f ssrs M f i v A si fXii y T T v iters m r v j i rX rffc m V Courtesy of NationalSwitchgear com ...
Page 2: ...nt in accordance with established safety practices b Is trained in the proper care and use of protective equip ment such as rubber gloves hard hat safety glasses or face shields flash clothing etc in accordance with es tablished safety practices To avoid injuries due to electrical shock burns and entanglement in moving parts this equipment must be installed operated and maintained only by qualifie...
Page 3: ...aintenance General Inspection Check List Hand Tools Recommended General Metric English Minimum Maintenance Schedule Lubrication Overhaul Lubrication of the Operating Mechanism Vacuum Interrupters Contact Erosion Interrupter Vacuum Check Mechanical High Potential Testing and Electrical Interrupter Vacuum Check Vacuum Tube Replacement Hydraulic Shock Absorber Vehicle Description Vehicle Function and...
Page 4: ...ciently for the purchaser s purposes the matter should be referred to the local Siemens Energy Automation Inc sales office THE CONTENTS OF THIS INSTRUCTIONAL MANUAL SHALL NOT BECOME PART OF OR MODIFY ANY PRIOR OR EXISTING AGREEMENT COMMITMENT OR RELATIONSHIP THE SALES CONTRACT CONTAINS THE ENTIRE OBLIGATION OF SIEMENS ENERGY AUTOMATION INC THE WARRANTY CONTAINED IN THE CONTRACT BETWEEN THE PARTIES...
Page 5: ...Closed Free Position Primary Contact Forced Open by Manual Pressure Vacuum Tube Replacement Illustration Illustration Showing Required Technique for Fastening Terminal Clamp Hardware Details of the Breaker Racking Interlock Type FSV Details of the Breaker Racking Interlock Type MSV Details of the Breaker Racking Interlock Internal to Mechanism Enclosure Details of the Automatic Closing Spring Disc...
Page 6: ...de IEEE Standard Rating Structure Preferred Ratings and Related Required Capabilities IEEE Standard Test Procedures IEEE Standard Application Guide The successful performance and application of these vacuum breakers depends as much on proper installation and main tenance as it does on good design and careful manufacture The instructions included in this book are necessary for safe installation mai...
Page 7: ...di I A J Air TBES iisp cl yf H vfm JP When moving breaker to location with a fork lift observe weight and lifting locations on the carton Carefully remove carton and plastic cover v 9 Slips Jw x k mi v wmm a i m Remove hold down bolt and angle located in the front and back of the breaker iJli 1 I iSK K3f 3 J i if H is 11 is w pi cS 90 m x3 if s SI 2S l V I 4w Wfc F s Hi V S 6M NS s t v 3N firr p f...
Page 8: ...mmended for all new circuit breakers especially if they are to be stored for extended periods as they may absorb moisture and contaminants This should also be done after storage and prior to placing breakers into service Changes in values between subsequent tests should be eval uated and corrective action taken where needed Since wide variations can occur in insulation values and con tact resistan...
Page 9: ...R FROM DISCONNECT TO TEST POSITION OR PULLING BREAKER FROM THE TEST TO DISCONNECT POSITION 10 4 IT IS NOT RECOMMENDED THAT THE BREAKER BE SCREW RACKED FROM DISCONNECT TO TEST POSITION ONLY POSSIBLE IF THE BREAKER S RACKING RELEASE HANDLE IS RAISED IF THIS IS DONE BREAKER WILL NOT AUTOMATICALLY STOP IN TEST POSITION 11a 5 CLOCKWISE CRANK ROTATION WILL MOVE BREAKER FROM TEST TO CONNECTED POSITION CO...
Page 10: ... During this racking exercise note the alignment of the stationary and movable secondary disconnects Check also the alignment between the auxiliary switch bayonet on cubicle wall and operating yoke on breaker See Fig 2a and 2b or reference to the breaker operating yoke 19 15 16 20 17 18 21 Circuit Breaker Elevations Typical front elevations and side elevations of the type MSV and FSV Vacuum Circui...
Page 11: ...eaker Side Elevation I Closing Spring Discharge Roller I h TIT rr n AII I r t I I I Operating Yoke I I I nl Barrier t I Shutter Guide r i i i i t i i y i i Secondary Disconnect i _J v NT X Grounding Contacts Guide Bar Breaker Front Elevation MSV Cubicle Side View Figure 2a MSV Breaker Front and Side Elevation Courtesy of NationalSwitchgear com ...
Page 12: ...k 5 1 i L Vi f I I I v Z v y Side Elevation Closing Spring Discharge Roller Closing Spring Charged Indicator Open Close Indicator Operation Counter Close Trip Operating Yoke I r Handle c th 1 1 1 Shutter Guide 111 1 i L Secondary Disconnect Grounding Contacts A O Guide Bar Front Elevation Figure 2b FSV Breaker Front and Side Elevation Courtesy of NationalSwitchgear com ...
Page 13: ...icity at which the circuit breaker is designed to operate An elementary diagram providing detailed information regarding electrical function and wiring within the circuit breaker Motor Spring Charging Range of control voltages required to serve the motor which stores energy in the closing springs Effective value of current required at nominal control voltage when applied to the serve the motor whi...
Page 14: ...L Weights Approx kA Pounds Kilograms Type kV kA Hz kA Number 1 2 3 4 6 5 7 8 9 10 11 12 5 MSV 250 5 MSV 250 5 FSV 350 5 FSV 350 5 FSV 350 7 FSV 500 7 FSV 500 7 FSV 500 15 FSV 500 15 FSV 500 15 FSV 750 15 FSV 750 15 FSV 750 15 FSV 1000 15 FSV 1000 15 FSV 1000 4 76 1200 4 76 2000 29 60 1 24 5 19 60 58 600 272 60 29 1 24 5 19 60 58 625 283 4 76 1200 60 41 1 19 5 19 60 78 1200 544 4 76 2000 60 41 1 19...
Page 15: ...decrease in insulating capacity is ne glected by standards for altitudes of up to 3 300 ft 1000m above sea level For higher altitudes the values of low fre quency withstand voltage impulse withstand voltage and rated continuous current must be corrected in accordance with ta ble 2 Altitude Typical Closing and Tripping Solenoid Characteristics Trip Coil Ohms Amps Control Voltages ANSI C37 06 Tbl 10...
Page 16: ... energy type and is mechanically and electrically trip free The type MSV and FSV vacuum circuit breakers are of drawout construction and conform to the requirements of ANSI C37 20 for breakers to be applied in metal clad switchgear The vac uum circuit breakers consist of a combination of two sub as semblies The interrupter operator sub assembly is a unitized assembly of the three vacuum interrupte...
Page 17: ... 1 Vacuum Interrupter Figure 7 The moving contacts 26 motion is aligned and stabilized by guide busing 35 The metal bellows 34 follows the travel of contact 36 and seals the interrupter against the surround ing atmosphere The Arc Quenching Principle When the contacts separate the current to be interrupted ini tiates an ionized metal vapor arc discharge and flows through this plasma until the next ...
Page 18: ...oupling 31 Stationary contact 31 1 Washer 31 2 Stationary Contact Stem 32 Insulator 33 Arcing chamber 31 2 is 31 1 l i ILJi i J J 31 33 5 33 VSTOOsi 36 r t alfett 34 35 i W U 36 1 H IlllE 36 2 Typical for other ratings Typical for 5 MSV 250 b a Figure 7 Section Through A Vacuum Interrupter Figure 8 Section Through the Vacuum Breakers Courtesy of NationalSwitchgear com ...
Page 19: ...aker shaft 63 lever 63 7 insulated coupler 48 and lever 48 6 The forces that occur when the action of the insulated coupler is converted into the vertical action of the moving contact are absorbed by guide link 48 9 which pivots on support 40 and eye bolt 36 3 During closing the tripping spring and the contact pressure springs 49 are charged and latched by pawl 64 2 The closing spring of motor ope...
Page 20: ... Charging The details of the closing spring charging mechanism are shown in figures 9 10 11 and 12 The charging shaft 62 1 is sup ported in the charging mechanism 50 2 but is not coupled mechanically with the charging mechanism Fitted to it are the crank 62 2 at one end and the cam 62 3 together with lever 62 5 at the other When the charging mechanism is actuated by hand with a hand crank opening ...
Page 21: ...itions the breaker main contacts can not be closed Closing See Fig 9 10 11 12 If the breaker is to be closed locally the closing spring is re leased by pressing CLOSE button 53 In the case of remote control and the spring release coil 52SRC 53 1 unlatches the closing spring As the closing spring discharges the charging shaft 62 1 is turned by crank 62 2 The cam disc 62 3 at the other end of the ch...
Page 22: ...the motor operating mechanism when the breaker has closed the operating mechanism is capable of an open close open duty cycle as required for rapid auto reclosing Manual Operation Electrically operated vacuum circuit breakers can be operated manually if the control supply should fall Manually Charging the Closing Spring Fig 13 Insert the hand crank 50 in hole 50 1 and turn it clock wise until the ...
Page 23: ...xiliary switches 52a NO and 52b NC change state The circuit breaker closes 52a contacts in series with the tripping solenoid close to enable a trip operation i Contacts LS21 and LS22 close to energize motor 88 LS3 closes and LS4 opens to cancel closing spring signal The spring release solenoid is now blocked and can not be activated until springs are fully charged and close command is removed L J ...
Page 24: ... i A 2 CC X0A 1 1 X0C12 XOAI2 3 I xBB2 ZZ LS IAT T 64 flilAl 2l b t l a o b fcJ M feJ CfT XOO 2 U_JI20 jL _Il2e 34 l i t i UJ 1 5 2 0 I AUX T T 6WS fr 3 t 0X 0 0I I 6 X0B1 2 AXOB I 1 T r 1 0 1 1 8 33 37 31 53 4 4 6 4 1_ 2 18 806 541 411 MSV FSV Figure 15 Typical Elementary Diagram Indirect Releases Dual Trip and Undervoltage Manual Closing Press the close button 53 The close open indicator 58 will...
Page 25: ...d against the appropriately shaped striker pin 16 23 by spring 16 27 The other end of the latch 16 25 is sup ported by a partly milled locking pin 16 21 16a pivoted in the cover sheets of the magnet armature 16 9 The armature 16 9 is pivoted in front of the poles of the U shaped magnet core 16 1 and is pulled away from it by the tension spring 16 11 If the magnet coil of the shunt release 3AX1101 ...
Page 26: ...e By Shifting Locking Screw 15 29 From A To B Figure 16b Latch Detail 25 Undervoltage Release Shown Charged Figure 16c Undervoltage Blocking Feature Capacitor Trip Device o I 01 4 I 1 T 5 x2 H4 o Connection For Source Voltage 120 VAC 2 1 52a H3 0 X1 H2 52 120V or 240V AC Supply 2 52 2 4 4 a i Hi 1 6 240 VAC 3 L L 10 Figure 17 Capacitor Trip Device Courtesy of NationalSwitchgear com ...
Page 27: ...on battery In such instal lations control power is usually derived from the primary source In the event of a primary source fault or disturbance with at tendant depression of the primary source voltage the capac itor trip device will provide short term tripping energy for breaker opening due to relay operation The capacitor trip converts 120 or 240 VAC control voltage to a DC full wave voltage whi...
Page 28: ...R SHOULD PARTICULAR PROBLEMS ARISE WHICH ARE NOT COVERED SUFFICIENTLY FOR THE PURCHASER S PUR POSES THE MATTER SHOULD BE REFERRED TO THE LO CAL SIEMENS OFFICE THE USE OF UNAUTHORIZED PARTS IN THE REPAIR OF THE EQUIPMENT OR TAMPERING BY UNQUALIFIED PERSON NEL WILL RESULT IN DANGEROUS CONDITIONS WHICH CAN CAUSE SEVERE PERSONAL INJURY OR EQUIPMENT DAMAGE FOLLOW ALL SAFETY INSTRUCTIONS CON TAINED HERE...
Page 29: ...tically Parts that are not rigidly fixed e g ar ticulated joints should be moved slightly to and fro to let the oil penetrate Following this operate the breaker several times to test it Hazardous voltages and high speed me chanical parts will cause death personal in jury and property damage Read instruction manual work only on an electrically isolated breaker whose energy storage devices have been...
Page 30: ...nd 15 FSV 1000 circuit breakers Contact Erosion Contact erosion is checked by visually observing an erosion mark on the exposed movable contact stem of the interrupter see Figure 20 Note the mark is a white dot This mark may be seen above the lower primary connection and just above the terminal clamp which fastens the flexible Rated Short Circuit Current kA 29 41 33 18 28 37 Rated Continuous Curre...
Page 31: ... the test volt ages listed below across each interrupter with the breaker Figure 19 Typical Primary Interrupter Contact Life Curve Interrupter Vacuum Check Mechanical Ref figs 21a 21b 21c Before putting the breaker into service or if an interrupter is suspected of leaking as a result of mechanical damage check the vacuum either mechanically as described in this section or alternatively electricall...
Page 32: ...no load a set number of times or voltage tested to condition the contacts It is recommended that one interrupter be removed and re placed completely rather than removing two or more interrupt ers at a time The following procedure in check list format describes the procedure for removing and replacing a vac uum interrupter Components may be identified by reference to figure 6 7 8 22 23 Removing The...
Page 33: ...closed and opened by hand until both springs have been discharged 1 8 1 9 Loosen the lateral bolt s on terminal clamp 29 2 Refer to figure 23 and employ the illustrated proce dure to loosen clamp hardware 8mm hex alien and 17mm socket Withdraw pin 48 5 from insulating coupler 48 and levers 48 6 Remove coupling pin from the eye bolt 36 3 Free struts 28 from the upper pole support 20 Loosen the stru...
Page 34: ...Interrupter Operator Maintenance Page 29 Figure 22 Vacuum Tube Replacement Illustration Courtesy of NationalSwitchgear com ...
Page 35: ... the connecting surface of flexible strap 29 1 Refer to Figure 23 and employ technique illustrated to fasten terminal clamp Note opposing wrenches Tighten the bolt s of the terminal clamp to a torque 2 3 Restore any conductive spacers which may have been provided to span the space between tube and pole support Locate the upper pole support and fasten finger tight using heavy flat washer lockwasher...
Page 36: ...joints and devices are tight Checking the Contact Stroke Open the circuit breaker Free insulating coupler 48 by removing pin 48 5 The interrupter contacts must now close automati cally as a consequence of atmospheric pressure Observe the terminal clamp 29 2 thru the openings on each side of the lower pole support 40 Using vernier calipers measure the distance from the bot tom surface of the termin...
Page 37: ...cured and pinned Breaker grounding contacts are aligned and securely bolted in place Closing spring discharge roller is located and secured The hinged protective barrier is aligned adjusted vertically and then pinned in place Thus all those features which must align with elements of the switchgear draw out enclosure are precisely set firmly se cured and pinned while the complete breaker is located...
Page 38: ...tationary cover mounted an gle The position of the racking release handle at the point of padlock hole alignment ensures the breaker is trip free yet the plunger engages the rail preventing breaker movement As the push rod rises its mushroom headed appendage within the breakers mechanism enclosure causes the inter lock levers to rotate elevating the trip free push rod and cam This cam encounters t...
Page 39: ...to Figure 25b reveals the essential elements of this system As the breaker exits the cubicle the roller encounters an actuating angle in the floor of the cubicle As the roller strikes the angle it must rise and this change in elevation is amplified thru a lever and fulcrum arrangement located above the roller Movement of the roller from a typical free height of 65mm 2 56 inches to 74mm 2 91 inches...
Page 40: ...Vehicle Description Page 35 Figure 24b Details of Closed Breaker Racking Interlock Internal to Mechanism Enclosure Courtesy of NationalSwitchgear com ...
Page 41: ...Vehicle Description Page 36 Figure 25a Details of Automatic Closing Spring Discharge System Type MSV Courtesy of NationalSwitchgear com ...
Page 42: ...kV 8 5 LiJ 4 3 0 K Ref Li 2000 AMP 15kV 8 5 Typical 88 3 0 h Upper Collar q Ref 3 3000 AMP 5kV 8 5 3 0 j q Ref 3000 AMP 15kV 2J 10 5 Fulcrum tr CM 1 777 L f w r 7T Lever I t i Roller I 2000A 1200A tnJ O Side View m Rear View MSV Breaker Rear View FSV Breaker Figure 25b Details of Automatic Closing Spring Discharge System Type FSV Figure 26 1200 2000 and 3000 Amp Continuous Current Interlock Orient...
Page 43: ...using and the vehicles secondary disconnects Figure 27 provides the detail of the cables wiring and a typical schematic diagram The wiring from this cable is terminated at a connection box which provides a convenient and versatile means of accom modating various control options and modes of common sourcing while maintaining a common breaker enclosure wir ing diagram Devices which will be mounted i...
Page 44: ...mpliment of two exterior and two interphase barriers Refer to the parts guide for location of barriers Figure 29 Hinged Front Panel Type FSV Front Hinged Panel Type FSV Reference Figure 29The FSV breaker employs a hinged front panel which is spring loaded to seek a vertical position Helical extension springs maintain tension in aramid fiber cords which are trained over guides to apply a horizontal...
Page 45: ...cedures for ground and test device usage in these modified D cubicles The replacement of Type MA 250 air magnetic circuit breakers with type 5 MSV 250 vacuum circuit breakers will require the mounting of two barriers in the existing D cubicles plus notching the internal iris barrier as indicated on replacement instructions Type FSV new and replacement breakers do not require additional barriers or...
Page 46: ...71 370 002 Sliding surfaces such as shutter cam rail plunger etc may be wiped clean and treated with Molycote Penelube 15 171 270 002 Nylon sliding and rotational bearings require no lubrication Pivots thru out the interlocking linkages should be treated with a light oil SAE 10 which includes rust inhibitors See Interruptor Operator Lubrication Section for Additional Information Courtesy of Nation...
Page 47: ...tiate in good faith an equitable adjustment in the contract price The Company s responsibility does not extend to any item of the goods which has not been manufactured and sold by Company Such items shall be covered only by the express warranty If any of the manufacturer thereof The Company and its suppliers shall also have no responsibility if the goods have been improperly stored handled or inst...
Page 48: ...Siemens Energy Automation Inc P O Box 29503 Raleigh NC 27626 919 365 6660 SIEMENS PRINTED IN U S A Printed by Theo Davis Sons Inc SG3248 01 12 94 2M Courtesy of NationalSwitchgear com ...
