Related Manuals for Siemens SGIM-3258C
Summary of Contents for Siemens SGIM-3258C
- Page 1 5kV and 15kV Metal-Clad Switchgear Instructions Installation Type GM Operation Maintenance SGIM-3258C Courtesy of NationalSwitchgear.com...
- Page 2 The sales contract contains the entire obligation of Siemens Power Transmission & Distribution . The warranty contained in the contract between the parties is the sole warranty of Siemens Power Transmission & Distribution . Any statements contained herein do not create new warranties or modify the existing warranty.
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Page 3: Table Of Contents
5kV and 15kV Metal-Clad Switchgear Table of Contents Introduction and Safety ..............2 Instrument Transformers ............32-36 Introduction ..................2 Control Power and Voltage Transformers-General Information ..32 Qualified Person ................2 Voltage Transformers ..............32 Signal Words ..................2 Control Power Transformer ............ -
Page 4: Introduction And Safety
1. Always work on de-energized equipment. Always de- as it does upon the careful design and fabrication by Siemens. energize a breaker, and remove it from the switchgear before performing any tests, maintenance or repair. -
Page 5: General Description
Switchgear depends as much on proper installation and main- Siemens switchgear. For proper installation and operation, this tenance as it does on good design, careful manufacture and information should be distributed to your operators and engineers. -
Page 6: Scope
Figure 1. All diagrams, descriptions and instructions the equipment. apply to all the above classes and designs unless noted otherwise. Siemens switchgear carries a type designation, or class, as Standard construction details of the switchgear, auxiliary shown in Table 1. These designations may appear on draw-... -
Page 7: Receiving, Handling & Storage
Siemens cannot be held Make immediate inspection for visible damage upon arrival, liable for repairs. Siemens will not be held liable for repairs in and prior to disturbing or removing packaging or protective any case where the work was performed prior to authorization wrapping. -
Page 8: Lifting And Moving
Receiving, Handling & Storage Lifting and Moving There are a number of methods that can be used in handling LIFT CABLE the switchgear which when properly employed will not damage the switchgear sections. The handling method used will be determined by conditions and available equipment at the SPREADER installation site. -
Page 9: Outdoor Switchgear
Receiving, Handling & Storage Figure 6 shows a method of using jacks on outdoor switchgear LIFT BEAM to facilitate the use of rollers under the shipping skid. Care TIE DOWN must be used with this method to prevent damage to the doors and to maintain stability of the timbers. -
Page 10: Final Movement Of Assembly
Receiving, Handling & Storage Final Movement of Assembly Storage: Indoor Switchgear Proper final movement and connection of the assembly When switchgear is not to be installed immediately, it should requires that several items be completed: be unpacked, inspected within 15 days of receipt and stored in a clean dry location. -
Page 11: Installation
Installation Preparation for Installation Outdoor Foundations Prior to installation of switchgear, study this instruction book Whichever type of foundation is used (e.g., concrete slab, sill and the switchgear drawings, such as general arrangement, channels, piers or pilings), it must have smooth and level sur- three line diagram, schematic diagrams, wiring diagrams, faces. - Page 12 Installation SILL CANNOT PROJECT MORE THAN 3.75 FROM FRONT OF UNIT TO ALLOW ENTRANCE OF SECONDARY BREAKER WIRING. DRAWOUT BOLT OR WELD SIDE CUBICLE TO SILL 0.06 SPACE BETWEEN SWGR & FLOOR FLOOR LINE AFTER SWITCHGEAR IS LEVELED AND PERMANENTLY WELDED OR BOLTED IN PLACE, APPLY ASPHALT OR EPOXY GROUT BETWEEN THE FOUNDATION...
- Page 13 FLOOR LINE LINE LINE 79.0 94.5 LOCATION OF .75" DIA. ANCHOR BOLTS. BOLTS & NUTS FURNISHED BY CUSTOMER. CLAMP WASHERS FURNISHED BY SIEMENS. ANCHOR BOLTING ARRANGEMENT “ “ TYPE `SGM' SWITCHGEAR (AREA A) 36.0 36.0 MAXIMUM AVAILABLE SPACE FOR CUSTOMER PRIMARY CONNECTION 15.76...
- Page 14 Installation 36.0 36.0 (AREA A) 15.76 MAXIMUM AVAILABLE SPACE FOR 10.12 CUSTOMER PRIMARY CONNECTION 4.25 FROM LOWER BREAKER THRU TOP OR 14.25 UPPER BREAKER THROUGH BOTTOM 8.75 (AREA C) 11.0 (AREA B) MAXIMUM AVAILABLE SPACE FOR CUSTOMER PRIMARY CONNECTION 26.0 FROM LOWER BREAKER THRU BOTTOM OR UPPER BREAKER THROUGH TOP 94.0...
- Page 15 DRAWOUT 91.25 SIDE) FLOOR LINE 92.75 LOCATION OF .75" DIA. ANCHOR BOLTS. BOLTS & NUTS FURNISHED BY CUSTOMER. CLAMP WASHERS FURNISHED BY SIEMENS. ANCHOR BOLTING ARRANGEMENT TYPE 'OGM' SWITCHGEAR (AREA A) 36.0 36.0 MAXIMUM AVAILABLE SPACE FOR CUSTOMER PRIMARY CONNECTION 15.76...
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Page 16: Installing Shipping Sections
Installation Installing Shipping Sections If the transformer must be positioned first, conduit couplings The proper method of installation depends on whether the should be provided in the switchgear foundation, so that the switchgear has been shipped as one complete group, or in conduits do not extend more than approximately 2”... -
Page 17: Anchoring, Leveling, And Assembling Indoor Switchgear
Installation Anchoring, Leveling, and Assembling Indoor Switchgear Remove seal material at top of aisle wall. Indoor switchgear shipping groups are held in true alignment by bolts holding the vertical sections to each other. Unbolt, remove, and scrap the 1-1/4” plate and 1-1/4” angle. -
Page 18: Assembly Of Single Aisle Shelter-Clad Switchgear
Installation Assembly of Single Aisle Shelter-Clad Switchgear Caulk at joints. Figure 12 illustrates the assembly of single aisle Shelter-Clad switchgear, and Table 2 lists the standard components sup- Raise door assemblies into place. Bolt doors to side plied. The item numbers in the table are used in all instructions plates of cubicles. -
Page 19: Expanding Length Of
Installation Disconnect aisle conduit. Note: Place lift truck (if supplied) for upper cell breakers inside the aisle enclosure before installation of the last door Remove all hardware securing the side plate to the assembly to the enclosure. The lift truck is wider and higher switchgear frame and hardware securing aisle end plate than the hinged aisle door opening, which prevents convenient to the aisle wall. -
Page 20: Expanding Length Of Existing Conventional Outdoor (Non-Walk-In) Switchgear By Addition Of Units
Installation The switchgear equipment was accurately aligned at the Check all breaker compartments for free movement of factory. This care insures proper operation and fit of mating the shutters. parts. Supporting surfaces for the switchgear’s 6” (152mm) base must be level and in the same plane within Move the next group into position. - Page 21 Installation See Note 1 NOTES: 1. Apply Caulking 15-172-454-001 from top to bottom. 2. See Figure 15 for Sections and Roof Installation Details. "C" 106 107 "C" SEE NOTE 1 NOTES: 1. Apply Caulking 15-172-454-001 Figure 12. Single Aisle (SGM) Field Assembly Table 2.
- Page 22 Installation INSTALL PEM 76.0 STUDS FROM 3.37 3.37 THIS SIDE 1.25 1.25 2.12 2.12 SEE NOTE 1 2.25 2.25 82.0 SECTION C-C 106 107 SECTION A-A SEE NOTE 1 SWITCHGEAR CHANNEL AISLE FLOOR PLATE LEFT END RIGHT END NOTES: 1. Apply Caulking 15-172-454-001 from top to bottom.
- Page 23 Installation NOTE: REMOVE COVER FROM REAR OF SW.GEAR & RE-INSTALL AT END OF WORKSPACE UNIT 134 135 AS SHOWN. NOTE 1 VIEW "A" 176 177 178 179 NOTE 1 106 107 SEE NOTE 1 125 127 110 111 112 113 L.H.
- Page 24 Installation Table 4. Single Aisle (SGM) With Work Space Field Assembly Components Item No Part Name Part Number Item No Part Name Part Number Aisle floor assembly 18-748-412-501 Vent panel (rear) 18-740-698-215 Wall panel assembly (aisle) 18-748-405-801 Roof trim angle (left end) 18-747-094-001 Wall panel assembly (workspace) 18-748-488-801...
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Page 25: Electrical Connections
Electrical Connections Bus Bar Molded plastic insulation boots for bus bar joints are nor- Bus bar is furnished for connection between many of the high mally shipped factory installed at shipping splits. Note voltage items within the switchgear enclosure, such as main their location and orientation, so they may be properly bus, circuit breakers, and pads for cable terminations. - Page 26 Electrical Connections 7.B.1. On copper-copper bus joints, place a flat washer against Torque the .50” SAE Grade No. 5 cap screws to 50-75 lb-ft. the bar with a lockwasher between the flat washer and (68-102 Nm) torque. (If special hardware is required by an the nut.
- Page 27 Electrical Connections For Illustration Only Shown with 3 Bars in Phase A and 2 Bar in Phase B and 1 Bar in Phase C Illustration depicts arrangement with standard molded glass polyester bus support. Molded Glass Polyester Support INSULATION BOOT MAIN BUS BAR SIDE VIEW REAR VIEW...
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Page 28: Bus Insulation
Electrical Connections 0.18 0.12 0.13 0.05 19.30 14.74 CENTER DIM_DIM 0.18 0.12 0.13 0.05 3.093 6.211 2.586 5.579 4.628 CENTER 0.18 0.12 0.13 0.05 35.096 21.857 5.028 10.531 3.276 24.076 CENTER Legend A - Tin Plated Aluminum to Tin Plated Aluminum C - Silver Plated Copper to Silver Plated Copper Bus Bars or Bus Bars... -
Page 29: Bus Joint Insulation - Boots
Electrical Connections Bus Joint Insulation - Boots CONNECTION BOLTS Standard and repetitive bus bar joints are normally provided MINIMUM (4) 1/2" DIAMETER THICKNESS OF RECOMMENDED with insulation boots installed at the factory. See Figure 20. INSULATION ON BUS GROMMET After they are completed in the field, bus bar joints at shipping splits must be insulated as part of the total insulation system. - Page 30 Electrical Connections 03367-89 03365-89 A: Shipping split, as shipped. Insulation boots are factory B: Shipping split assembly in progress. Insulation boots have installed in correct location. Bus bars and hardware are been removed, and bus bars have been installed. Connection mounted on a temporary shipping bracket in the one of the bolts have been correctly torqued.
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Page 31: Bus Joint Insulation - Taping
Because of considerable variations in installation requirements mold in place covering all sharp projections. Cover hardware and available cables, Siemens furnishes a double-bolt, double- and sharp edges of bus bar if any will be against the tape. clamp, terminal lug as standard. All insulating and terminating materials other than terminal lugs and cable supports are to be Apply half-lapped layers of 4”... - Page 32 Electrical Connections BREAKER BREAKER BREAKER BREAKER A) TWO FEEDER CIRCUIT BREAKERS B) TWO FEEDER CIRCUIT BREAKERS ALL CABLES BOTTOM EXIT ALL CABLES TOP EXIT C) TWO BREAKERS D) BREAKER ABOVE AUXILIARY E) AUXILIARY OVER BREAKER UPPER CABLES TOP EXIT CABLES TOP EXIT CABLES BOTTOM EXIT LOWER CABLES BOTTOM EXIT Figure 25.
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Page 33: Secondary Control Wiring
Electrical Connections 0.18 0.12 0.13 0.05 6.06 4.34 4.05 6.72 2.05 4.70 CENTER TERMINAL BLOCK CONTROL CABLE SEAL CONDUIT 1.0" (25mm) MAXIMUM FLOOR LINE Figure 27. Secondary Control Cable Connections Ground Connections A common ground bus is incorporated in all units for properly grounding the equipment after installation. -
Page 34: Instrument Transformers
Instrument Transformers Control Power and Voltage Transformers- General Information When required, voltage transformers (VTs), or a control power transformer (CPT), or fuses for a CPT can be mounted on a withdrawable rollout fuse tray. Each auxiliary cell (A = upper, or B = lower) can contain up to two rollout trays. -
Page 35: Control Power Transformer
Instrument Transformers Control Power Transformer • To Connect VT Rollout Connecting (inserting) the voltage Control power transformers, up to 15kVA single phase, with transformer rollout tray is the reverse of the disconnecting the associated primary fuses, may be mounted on a rollout operation. - Page 36 Instrument Transformers 1627-95 1628-95 A: VT Rollout Tray in Connected Position. Handle/interlock B: Handle/interlock Bars Retracted, to Allow Rollout Tray to Bars Fully Extended to Secure Rollout Tray in Cell. be Withdrawn. 1625-95 1624-95 D: VT Rollout Tray Withdrawn to Allow Inspection of Fuses. C: Extension Rails Withdrawn to Fully Extended Position.
- Page 37 Instrument Transformers A: Step 1: Secondary breaker is closed. Open secondary B: Step 2: Secondary breaker is open. Rotate key interlock, breaker. (05092-89) extending interlock to block closing of secondary breaker. Remove key. (05093-89) C: Step 3: Key interlock on rollout tray is extended, prevent- D: Step 4: Key interlock withdrawn.
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Page 38: Current Transformers
Instrument Transformers Current Transformers The torroidal current transformers shown installed in a unit in Figure 32 are the most commonly used type in metal-clad switchgear equipment. The circuit breaker primary studs pass through the transformers when in the CONNECT position. Types MD or MDD current transformers are of the torroidal type mounted in the circuit breaker compartment behind the shutter barrier. -
Page 39: Circuit Breaker Position
Circuit Breaker Position Cell Preparation The interlock will allow a 2000 ampere circuit breaker to enter The cell contains the positioning, interlocking and operating a 1200 ampere cell, provided the voltage, interrupting, and devices described below and shown in Figures 33 and 35. These close and latch ratings equal or exceed the ratings of the cell. -
Page 40: Circuit Breaker Ground Connection
Circuit Breaker Position Circuit Breaker Ground Connection Breaker Installation and Removal A sliding contact multiple finger assembly for grounding the Type GMI Vacuum Circuit Breakers are normally shipped circuit breaker frame is mounted underneath the breaker truck installed in the switchgear cells. They are normally shipped with frame, as shown in Figure 34. -
Page 41: Removal From Cell In Indoor (If Not On Raised Pad) And Shelter-Clad Outdoor Switchgear
Circuit Breaker Position DANGER Hazardous voltages and high-speed moving parts. Will cause death, severe personal injury or property damage. Read instruction manuals, observe safety instructions, and use qualified personnel. Note: Do not perform Spring Discharge Check if the circuit breaker is in the CONNECT position. Open circuit breaker and rack to the DISCONNECT position, and then perform the Spring Discharge Check. -
Page 42: Removal From Cell In Outdoor Non-Walk-In Enclosures, Or For Indoor Switchgear Installed On A Raised Pad
Circuit Breaker Position Removal from Cell in Outdoor Non-Walk-In Enclosures, or for Indoor Switchgear Installed on a Raised Pad Removal of the breaker from a non-walk-in outdoor switchgear assembly is similar to removal of a breaker at floor level, with several additional steps. -
Page 43: Racking Crank Engagement Procedure
6. Remove the breaker from the two extension rails using the The portion of the racking mechanism shaft which is visible is approved Siemens breaker lifting device (see Figures 40 and cylindrical, and the square shoulder of the racking mechanism 41), or a lifting sling (see Figure 48) and a suitable crane. -
Page 44: Breaker Racking
Circuit Breaker Position The circuit breaker racking method has been designed to be SOCKET ASSEMBLY used with the instrument door either open or closed. Moving the breaker between the CONNECT and TEST or DISCONNECT HAND POSITION positions with the door closed provides additional protection to the operator and is the recommended procedure. -
Page 45: Closed Breaker Racking Interlock
Circuit Breaker Position Closed Breaker Racking Interlock The closed breaker racking interlock is designed to prevent a DISCONNECT breaker from being racked from TEST to CONNECT and vice-versa POSITION CONNECT TEST POSITION POSITION with the primary contacts closed. Only an open circuit breaker is to be moved between these positions. -
Page 46: Inspection And Testing
Inspection and Testing Inspection and Testing DC tests, the voltage should be raised to the test value in Before the equipment is energized, it must be thoroughly discrete steps and held for a period of one minute. inspected and tested. Correct any deviations before energization. In accordance with ANSI C37.20.2 Clause 5.5, Field Inspection Dielectric Tests are also recommended when new units... -
Page 47: Maintenance
Regardless of the length of the maintenance and lubrication a part of the primary insulation system and in such cases interval, Siemens recommends that circuit breakers should be the outer surface of this insulating covering will not be at inspected and exercised annually. -
Page 48: Lubrication
Lubricate shutter guide, bearings, rollout fuse truck moving Include the following items in your inspection procedure: parts, etc., with dry spray lubricant Siemens Part No. 15-171- Check general condition of switchgear installation. 270-001. Note: Use of lubricant not suitable for the application Inspect switchgear interior for accumulation of will make the mechanism very difficult to operate. -
Page 49: Corrosive Atmospheres
Use only recommended solvents for cleaning Inspect the painted surfaces and touch up scratches as insulation materials. necessary. Touchup paint is available from Siemens. This paint matches the unit and is thinned and ready for use in one pint (473mm ) spray cans. -
Page 50: Accessories
Accessories Split Plug Jumper Test Device When specified, a split plug jumper test device is supplied. This device allows a circuit breaker to be operated from the control switch on the instrument panel while the circuit breaker is outside of and adjacent to its cell. 1622-95 Figure 47. -
Page 51: Type 3Ef Surge Limiters
Accessories Type 3EF Surge Limiters Table 8. Type 3EF Surge Limiter Data The type 3EF Surge Limiter is used with vacuum circuit breakers Rated Voltage and contactors to prevent the development of excessive over- voltages due to multiple reignitions or virtual current chopping. MCOV of ZnO element 10.4 This is primarily of concern during the starting of motors and the... - Page 52 Siemens Power Transmission & Distribution P.O. Box 29503 Raleigh, NC 27626-0503 SGIM3258C (Replaces SG-3258B) 3M398TD Printed in U.S.A. © 1998 Siemens Power Transmission & Distribution SIEMENS is a registered trademark of Siemens AG. Courtesy of NationalSwitchgear.com...