Siemens GM-SG Instructions Manual Download Page 40 | Manualshive

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Courtesy of NationalSwitchgear.com

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Summary of Contents for GM-SG

Page 1: ...Instructions Installation Operation Maintenance E50001 U229 A284 X US00 5kV and 15kV Metal Clad Switchgear Type GM SG SIEMENS Power Transmission Distribution Courtesy of NationalSwitchgear com ...

Page 2: ...ho is familiar with the installation construction or operation of the equipment and the hazards involved In addition this person has the following qualifications a is trained and authorized to de energize clear ground and tag circuits and equipment in accordance with established safety procedures b is trained in the proper care and use of protective equipment such as rubber gloves hard hat safety ...

Page 3: ...ransformers Control Power Transformer Operating Sequence Current Transformers Circuit Breaker Positions Circuit Breaker Cell Preparation Circuit Breaker Racking Mechanism Interference Blocking Plate Rating Interlock Secondary Disconnect Mechanism Operated Cell Switch MOC Truck Operated Cell Switch TOC Circuit Breaker Ground Connection Shutter Operation Circuit Breaker Installation and Removal De E...

Page 4: ...A DANGER Hazardous voltages and high speed moving parts Will cause death serious injury or property damage To avoid electrical shock burns and entanglement in moving parts this equipment must be installed operated and maintained only by qualified persons thoroughly familiar with the equipment instruction manuals and drawings Read and understand this instruction manual before using equipment Field ...

Page 5: ...chgear described in this manual is of the metal clad type as defined in ANSI IEEE C37 20 2 All parts are completely enclosed within grounded metal barriers Secondary control devices and primary circuits are isolated from each other by shutters or barriers Primary bus and joints are completely encased with insulation materials to suit the voltage class of the equipment Siemens switchgear carries a ...

Page 6: ...inspection for possible concealed damage while the carrier s inspector is on site If inspection for concealed damage is not practical at the time the carrier s inspector is present it must be done within 15 days of receipt of equipment If concealed damage is found the carrier must again be notified and inspection made prior to taking any corrective action to repair Also notify Siemens immediately ...

Page 7: ...s when provided in place during moving operation until final location is reached Each group of switchgear has provisions for attaching lifting equipment Though the lift points vary in location on indoor Shelter Clad outdoor and non walk in outdoor designs all are designed for use with a crane of adequate height and capacity To estimate the maximum required crane capacity multiply the number of sec...

Page 8: ... include adequate means to prevent the lifting cables from slipping off of the lifting pipe during use Final Movement of Assembly Proper final movement and connection of the assembly requires that several items be completed 1 Preplan sequence of installation movements and connections 2 Where equipment must be slid into final location start with the left end shipping group and continue in sequence ...

Page 9: ...a heat source of approximately 500 watts output within each vertical section to prevent condensation Space heaters are not standard equipment on indoor switchgear Lubricate any moving parts such as hinges shutters etc if storage is for an extended period of time When batteries are supplied connect them to a charger Storage Type GMSG Vacuum Circuit Breakers and Lift Truck Vacuum circuit breakers if...

Page 10: ...its for both primary and secondary conduits Figures 8 9 show the method of anchoring outdoor Shelter Clad walk in switchgear and Figure 10 shows the method of anchoring outdoor non walk in switchgear Foundation General Requirements Prior to installation of the switchgear careful design planning and construction of the foundation or base on which the switchgear will rest must be made A thorough ana...

Page 11: ...x 8 50 deep 8 50 527 X 216mm For cables from either top breaker out top when bottom breaker also exits top 1 15 I I J Area Q r r i 850 1 I I 39 75 Area B Maximum available space for customer primary connection from lower breaker thru bottom or upper breaker through top Detail 5 1 120 7 6 r OR Bottom breaker out bottom when top breaker also exits bottom 98 50 33 6 6 625 dia holes for 50 dia anchor ...

Page 12: ...mary connection from lower breaker thru top or upper breaker through bottom 36 0 36 0 425 20 75 26 00 l 1 T f i 8 50 J l J Area C 19 15 1 r i 1 8 50 I Area B Maximum available space for customer primary connection from lower breaker thru bottom or upper breaker through top i I 5 0 7 6 See Figure 7 Explanation of Cable Areas 98 5 31 00 2 50 Preferred location for customer secondary leads below or a...

Page 13: ...v E o 2 CO zZ O 3 X O u uj 5 0 7 6 CD Q S 5 0 o D 1 S 3 C CO u Q o E 5 JO O in Ilf O 3 C 983 See Figure 7 Explanation of Cable Areas 31 00 4 230 Preferred location for customer secondary leads below or above left hand side optional 7 00 J 1037 Q 0 m 2 S 0 CO 3 m 3 E 5 ia o a o c 403 O LL c o LL Q C F E 269 0 o 0 Q gS JS c a E Hr 6 0 OJ o c 2 a c f o CD o 2 C u O 5 C O c Q in i c 3 co a c c o u E E...

Page 14: ...through bottom l 4 4 i 8 50 i 19 15 Area Q i i i i Area B Maximum available space for customer primary connection from lower breaker thru bottom or upper breaker through top I 5 y 7 6 98 5 See Figure 7 Explanation of Cable Areas 31 00 2 50 Allow 30 0 clearance for door swing on left hand end Preferred location for customer secondary leads below or above left hand side optional 7 00 f 10 57 4 4 All...

Page 15: ...t the switchgear throat will fit into the transformer throat move the switchgear toward the transformer until the switchgear throat extends approximately 2 51mm into the transformer throat and the switchgear anchor bolts and conduits are correctly aligned With all points now in alignment conduit caps and floor plate conduit covers removed carefully lower the switchgear into its permanent position ...

Page 16: ... switchgear groups which have been assembled on a 6 162mm base must be supported along this base with a span between support points not exceeding 36 914mm If shims are required use 4 100mm square strips placed between the bottom of the base and the founda tion in the anchor bolt area where they will be clamped firmly in place Do not force cubicle in firm Anchoring Leveling and Assembling Indoor Sw...

Page 17: ...e 5 Install all floor plates 6 Caulk aisle walls Set door assemblies in place Bolt the door to the aisle wall and to the side plate of the cubicle 4 Mount aisle conduit switches receptacle and wire to the junction boxes See conduit arrangement 5 Place roof decks in position and fasten with bolts provided 6 Fasten the roof decks together with 3 8 hardware 7 Set channel shaped covers over the joints...

Page 18: ...ng Conventional Outdoor Non Walk ln Switchgear In conventional outdoor non walk in arrangements the switchgear as shipped is true and in correct position relative to its support base The formed floor base sections are a permanent part of the switchgear and are not to be loosened or moved from position Verify the anchor bolt locations in the concrete and all points shown in the general arrangement ...

Page 19: ... breaker compartments for free movement of the shutters 5 Move the next group into position The front edge of the cubicle base should be in line with those of the previously installed group This will insure a good fit with the aisle floor plates Make certain that the end of the group being installed is tightly against the previously installed group Repeat steps 3 4 and 5 and install all shipping s...

Page 20: ... Name Aisle floor assembly TBD 54 Aisle wall spacer 57 TBD Aisle roof 58 TBD Aisle roof spacer 60 TBD Housing assembly 6 61 TBD Aisle roof trim angle 63 TBD Aisle roof cap 64 TBD Aisle roof end cap 65 TBD Equipment roof cap 66 TBD Aisle end hardware 101 113 TBD Aisle roof floor hardware 125 138 TBD 18 Courtesy of NationalSwitchgear com ...

Page 21: ...ly Components Part Number Item No Part Name Aisle floor assembly TBD 54 Aisle roof 58 TBD Housing assembly 6 61 TBD Aisle roof trim angle 63 TBD Aisle roof cap 64 TBD Equipment roof cap 66 TBD 101 113 Aisle end hardware TBD Aisle roof floor hardware 125 138 TBD 19 Courtesy of NationalSwitchgear com ...

Page 22: ...Installation Figure 15 Single Aisle SGM SG with Work Space Field Assembly 20 Courtesy of NationalSwitchgear com ...

Page 23: ...TBD Aisle roof cap 64 TBD Aisle roof end cap 65 TBD Equipment roof cap 66 TBD Header assembly rear 67 TBD 69 Roof support rear TBD Vent panel rear 70 TBD Roof trim angle left end Roof trim angle right end Workspace floor assembly 71 TBD 72 TBD 73 TBD TBD 74 Roof panel 75 End trim front left end End trim front right end End trim rear left right End trim front left end Aisle end hardware TBD 76 TBD ...

Page 24: ...Installation Figure 16 Sections and Roof Installation Details 22 Courtesy of NationalSwitchgear com ...

Page 25: ...emblies for voltage and or control power transformers and for connection to surge arresters or surge limiters Standard bus bar material is copper with silver plated joints for electrical connections Copper bus with tin plated joint surfaces is also available Bus bars are insulated with an epoxy insulation applied by a fluidized bed method Bus bar joints are insulated with molded insulation boots w...

Page 26: ...assembly drawings Install insulation boots or tape joints where required per instructions in following sections 10 Connect ground bus See Figure 30 Insert bar in side wall opening to overlap the ground bus in adjacent cubicles 11 Torque the 3 8 16 SAE Grade 5 cap screw used in the ground bus to 25 40 Ib ft 34 to 54 Nm 8 9 Porcelain or Cycloaliphatic Epoxy Bus Support Grommet inserts optional For i...

Page 27: ... l i C i I fun Side View Main Bus Bar Rear View Figure 18 Main Bus Joints Auxiliary Section Connection to top compartment shown dashed 11 Spacer if no breaker in upper cell 3 3 3 5 0 3 3 1 3 e Breaker Riser Typ Main Riser Typ One Main Bus Bar One 1 4 x 4 Copper or One 3 8 x 6 Copper One Main Bus Bar One 3 8 x 6 Copper Two Main Bus Bars Two 3 8 x 6 Copper Three Main Bus Bars Three 3 8 x 6 Copper Ba...

Page 28: ... boot to complete the joint observe the location and orientation of the boot and hardware This should make reinstallation easier Nylon nuts and bolts and flat washers are used to hold the boot closed after it is installed Carefully remove the insulation boot and save all hardware After the bus bar joint has been properly assembled reinstall the insulation boot Secure the boot closed with the nylon...

Page 29: ...lting cavity allows for full overlap of tap or splice plate and for any number of connection bolts used Grommet Width of insulation on bus Grommet Grommet x Width of bus bar Bus Bus t x t Grommet Boot closing flaps secured with plastic rivets or nylon hardware Width of insulation on tap Width of tap r Grommet Figure 21 Typical Installation of Insulating Boot Figure 22 Main Bus with Insulating Boot...

Page 30: ...Electrical Connections Figure 23 Connection of Bus at Shipping Split 28 Courtesy of NationalSwitchgear com ...

Page 31: ...sharp edges of bus bar if any will be against the tape 3 Apply half lapped layers of 4 102mm wide tape 15 171 987 002 or 1 25mm wide tape 15 171 987 001 over the joint Each layer should overlap the bus bar insulation by at least 1 1 2 38mm Stretching of tape 10 to 15 in problem areas may help in eliminating voids and wrinkles For 5kV class equipment use two half lapped layers of tape over mastic p...

Page 32: ...der circuit breakers all cables bottom exit B Two feeder circuit breakers all cables top exit GS J a t 3 D 3 v D O Two breakers Upper cables top exit Lower cables bottom exit D Breaker above auxiliary cables top exit E Auxiliary over breaker cables bottom exit Figure 27 Typical Cable Termination Configurations 30 Courtesy of NationalSwitchgear com ...

Page 33: ...nd are of sufficient length to be routed to their termination point after cubicles are bolted together Terminals for these leads are furnished by the purchaser to suit the available crimping tools Terminal block hardware is furnished with the switchgear All wiring diagrams needed for installation are furnished in advance Wires can be easily traced on wiring diagrams furnished for the switchgear Ea...

Page 34: ...ble ground connection is obtained Consult latest National Electrical Code NFPA 70 for ground connection standards Right Rear Side Sheet Right Mid Side Sheet TIT 7 Ground Bar to Cable Area Front of Unit Connector to Circuit Breaker Cell CD s s 8 1 Interunit Ground Bar Figure 30 Ground Bus Connection Temporary Ground Connections It is recommended that no work be done on current carrying parts until ...

Page 35: ...ulating shutter with complete safety Rollout Tray May Be Used For Cell Location Cell Voltage Transformer VT C Voltage Transformer VT or Control Power Transformer CPT up to 15kVA single Phase A Upper D Fuses on a withdrawable tray for a CPT installed in cell locations E F over 15kVA single phase or any other three phase Voltage Transformer VT E Voltage Transformer VT or Control Power Transformer CP...

Page 36: ...hdrawal of a VT rollout except that the secondary circuit breaker must be opened before the rollout tray can be withdrawn If the secondary molded case circuit breaker is mounted directly on the rollout tray the circuit breaker will be mechanically interlocked with the handle interlock bar If the circuit breaker is separately mounted the circuit breaker will be key interlocked with the handle inter...

Page 37: ... with the interlock bar withdrawn on the side of the rollout Push the rollout tray in firmly to the fully connected position When this is done a hole in the extension rail should align with the handle interlock bar which will allow the handle interlock bar to be released locking the rollout tray into the connected position in the unit Once the rollout tray is fully inserted and the handle interloc...

Page 38: ... circuit breaker Remove key Under Construction Under Construction C Step 3 Key interlock on rollout tray is extended preventing operation of handle interlock bars Insert key rotate key interlock withdrawing interlock so that handle interlock bar is free to move D Step 4 Key interlock withdrawn Operate handle interlock bar to allow withdrawal of rollout tray Figure 33 CPT Fuse Rollout Tray with Key...

Page 39: ...t behind the shutter barrier Up to two standard or one high accuracy current transformers may be mounted around each primary insulator tube Figure 34 Type MD CT s Installed on Lower Disconnects CT Barrier Removed for Photo A zero sequence toroidal current transformer can be furnished for ground sensing circuits This transformer is mounted in the primary cable area at a convenient height for receiv...

Page 40: ...nating interference plate on the circuit breaker is shown in Figure 36 m BUS M QJ i G X m Qh HI 3 A t id E m m A Interference blocking plate rating interlock B Racking mechanism C Ground bar D Guide rails E Trip free and racking interlock padlock provisions F MOC switch operator G MOC switch terminals H TOC switch terminals I Shutter operating linkage J Shutter behind barrier K CT barrier L Second...

Page 41: ... typically a pullout type fuse holder is normally located on the secondary device panel inside the secondary compartment Removal of the fuse holder de energizes control power to the circuit breaker in the respective switchgear cell In some switchgear assemblies a molded case circuit breaker is used in lieu of the pullout type fuse holder Opening this circuit breaker accomplishes the same result co...

Page 42: ... Open control power disconnect e g pull fuseholder or open molded case circuit breaker 3 Press red Trip pushbutton 4 Press black Close pushbutton 5 Again press red Trip pushbutton 6 Verify Spring Condition Indicator shows DISCHARGED 7 Verify Main Contact Status Indicator shows OPEN Removal from Cell in Indoor if not on raised pad and Shelter Clad Outdoor Switchgear After performing the Spring Disc...

Page 43: ... breaker can now be removed from the cubicle and rolled out on to the two extension rails 6 Remove the circuit breaker from the two extension rails using the approved Siemens circuit breaker lifting device see Figures 42 and 43A or a lifting sling see Figure 50A and a suitable crane 7 Lift the two extension rails and withdraw them from the switchgear 8 Close the circuit breaker compartment door an...

Page 44: ...igned the socket will not be able to engage The socket square must be aligned with the square shoulder of the racking mechanism shaft 4 Once alignment is achieved firmly push the crank and socket assembly toward the racking mechanism 5 When properly engaged the crank should remain connected to the racking mechanism due to the spring plungers If the crank does not remain in position adjust the spri...

Page 45: ...shows D for DISCONNECT position 2 Check that the circuit breaker is fully pushed into the cell to the DISCONNECT position 3 Check that the circuit breaker is OPEN 4 Secondary disconnects will automatically connect as the circuit breaker moves to the TEST and CONNECT position 5 Close circuit breaker compartment door 6 Insert racking crank through round opening at bottom of door and onto the racking...

Page 46: ... to discharge and the interlock should prevent the circuit breaker from closing Activating the close function electrically such as by using the control switch should cause no operation This is also true when the circuit breaker is in either the TEST or CONNECT positions and the trip free interlock slide is pushed forward and key interlocked or padlocked The circuit breaker will operated trip free ...

Page 47: ... Proper fuses correctly placed 5 Temporary wiring jumpers used on the secondaries of current transformers wired to external devices as shown on wiring diagrams removed 6 Ground connections properly made 7 Incoming primary and secondary connections properly made and checked for shorts or undesired grounds 8 All equipment which has been removed during assembly has been replaced 9 Relays coordinated ...

Page 48: ...l instruments relays meters etc during this time 4 Connect as small a load as possible and observe instruments Note Allow several minutes before connecting additional load 5 Gradually connect more load to the equipment while observing instruments until the full load is connected 6 Check for signs of overheating of primary and secondary circuits and satisfactory operation of all instruments during ...

Page 49: ...breakers use both standard imperial U S customary and metric fasteners Imperial U S customary fasteners are used in most locations in the switchgear cubicles Hazardous voltages and High speed Moving Parts Will cause death serious injury or property damage Do not work on energized equipment Always de energize and ground the equipment before working on the equipment Recommended Maintenance and Lubri...

Page 50: ...f bus bars are overheating check for poor or loose connections or for overload J Examine automatic shutters for proper operation K Examine all safety interlocks L Perform maintenance of circuit breakers as outlined in circuit breaker instruction manual M Check space heaters and thermostat if equipped for proper operation N Maintain other equipment in accordance with the respective instruction book...

Page 51: ...sconnect switches primary and secondary disconnecting contacts wire ends instrument terminals etc must all be protected At each maintenance inspection all of the old grease should be wiped off of the contacts and new lubricant applied to all sliding surfaces Apply the contact lubricant in a layer 03 06 1 2mm thick Use only Siemens Electrical Contact Lubricant Part No 15 172 791 233 available in 8 ...

Page 52: ...net When specified a test cabinet is supplied This device allows a circuit breaker to be operated from a control switch in a cabinet which is wall mounted by the purchaser A length of flexible cable is connected to the cabinet and has a terminal plug on the other end which may be connected to the secondary disconnects on the circuit breaker When connected the circuit breaker can be opened or close...

Page 53: ...he equipment before any high potential testing is performed The one minute test period for the application of these test voltages to switchgear may damage the surge limiters Surge Limiters Recommended Protected Load Equipment Liquid Transformers No Yes1 Standard BIL Dry Type Trans 5kV 60kV BIL No 7kV or 15kV 95kV BIL No Yes2 Locked Rotor Current 600A Motors Locked Rotor Current 600A No Reactors Ye...

Page 54: ...user should determine the suitability of the product for its intended use and assumes all risk and liability whatsoever in connection herewith Siemens Power Transmission Distribution Inc 7000 Siemens Road Wendell NC 27591 phone 1 800 347 6659 2007 Siemens Power Transmission Distribution Inc All rights reserved E50001 1 229 A284 X US00 new 03 2007 Subject to change without notice www usa siemens co...

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