Siemens SIMOSEC Operating Instructions Manual Download

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Medium Voltage Switchgear

Type SIMOSEC up to 27.6 kV, Extendable, Metal-Enclosed up to 1200 A

Medium Voltage
Switchgear

OPERATING

INSTRUCTIONS

Description
Installation
Operation
Maintenance

Order no.: 832-6063.0
Revision:

Summary of Contents for SIMOSEC

Page 1: ...oltage Switchgear Type SIMOSEC up to 27 6 kV Extendable Metal Enclosed up to 1200 A Medium Voltage Switchgear OPERATING INSTRUCTIONS Description Installation Operation Maintenance Order no 832 6063 0 Revision 02 ...

Page 2: ...ed to de energize clear ground and tag circuits and equipment in accordance with established safety practices b is trained in the proper care and use of protective equipment such as rubber gloves hard hat safety glasses or face shields flash clothing etc in accordance with established safety prac tices C is trained in rendering first aid Note These instructions do not purport to cover all details ...

Page 3: ...2 4 Installing the bus bar 48 12 5 Installing the ground bus bar 51 12 6 Installing the end wall 52 12 7 Connecting the station ground grid to the switchgear frame 52 13 Connecting high voltage cables 53 13 1 Preparing connection of high voltage cables 53 13 2 Cable connection types 54 13 3 Installing cold shrink insulation at cable connections 56 13 4 Connecting cable panel to high voltage 61 13 ...

Page 4: ...ng the switchgear 90 22 4 Checking corrosion protection 91 22 5 Returning SIMOSEC switchgear to service 91 23 Access to the switchgear 91 23 1 Identifying the panel 91 23 2 Removing the cable compartment cover 92 23 3 Removing the cover of the compartment for customer low voltage equipment 95 23 4 Removing the cover of the bus bar compartment 96 24 Testing 96 24 1 Verification of grounding 96 24 2...

Page 5: ...s famil iar with the installation construction or operation of the equipment and the hazards involved In addition this person has the following qualifications Training and authorization to energize de energize clear ground and tag circuits and equipment in accordance with established safety practices Training in the proper care and use of protective equipment such as rubber gloves hard hat safety ...

Page 6: ...ching device after the spring charged mechanisms are discharged 3 Always let an interlock device or safety mechanism perform its function without forcing or defeating the device 5 Field Service Operation Siemens can provide competent well trained Field Service Representatives to provide technical guidance and advisory assistance for the installation overhaul repair and maintenance of Siemens equip...

Page 7: ...ventional cable terminations Three position switch disconnector metal enclosed with air insulated primary termi nals and gas insulated switching functions maintenance free quenching system Switching devices in stainless steel SF6 filled vessel without seals with welded in bushings sealed for life Metal enclosed panel design Panel heating for severe climatic ambient conditions to prevent condensati...

Page 8: ...ce free operating mechanism parts Mechanical switch position indication integrated in mimic diagram Switchgear interlocking system with logical mechanical interlocks Cable testing without the need to isolate the bus bar see Cable testing on page 98 Low life cycle costs and high availability throughout the entire product service life cycle as a result of Low maintenance technology concept Climatic ...

Page 9: ...connection compartment 6 Sockets for capacitive voltage detection system 20 Three position switch 7 Insulating cap on bus bar for 15 kV 21 Grounding bus bar 8 Bus bar 22 Spring operated mechanism for three position switch 9 Bushing type insulator for bus bar 23 Grounding connection for location see dimension drawings 10 Ready for service indicator for switching device 24 Option Local remote switch...

Page 10: ... movement the compression vanes generate a pressure difference between the subchambers The SF6 gas flows through a nozzle causes a directional blow out of the breaking arc and quenches it rapidly Interlocking is not necessary as the CLOSED and GROUNDED functions cannot be implemented simultaneously Features Switch disconnector Metal enclosed with gas insulated maintenance free quenching principle ...

Page 11: ...tch Manual spring operated mechanism The spring operated mechanism is used for the three position switches Switching movements are executed independently of the speed at which the opera ting lever is moved Manual spring operated stored energy mechanism The spring operated stored energy mechanism is used for three position switch dis connectors in transformer feeders as transformer switch Switching...

Page 12: ... non spring return option Fig 5 Switch position indication a CLOSED indication s TRIPPED indication d OPEN indication f GROUNDED indication g Indication FUSE INTACT h Indication FUSE BLOWN Fig 6 Spring operated mechanism Fig 7 Spring operated stored energy mechanism a Operating mechanism for three position switch disconnector with optional motor operating mechanism d Switch position indicator mech...

Page 13: ...Description Switch positions of the three position switch Fig 8 Switch positions of the three position switch Three position switch disconnector up to 600 A Switch position CLOSED OPEN GROUNDED a Bus bar connection s Feeder e g for cable connection ...

Page 14: ... 0 Switch positions of the make proof grounding switch Fig 9 Switch positions of the make proof grounding switch Make proof grounding switch Switch positions OPEN GROUNDED a Bus bar connection s Feeder e g for cable connection option or for metering option ...

Page 15: ...ements 4MA7 block type current transformer 4MR voltage transformers Dimensions according to DIN 42 600 Part 8 Single pole indoor block type current transformer Single pole indoor voltage transformer Cast resin insulated Secondary connection by means of screw type terminals 1A or 5A CT secondary rating to suit order requirement Fig 10 Toroidal type current transfor mers installed around the cables ...

Page 16: ...he mimic diagram on the control panel corresponds with the switching functions of the panel Local remote switch option The local remote switch determines the location from which the three position switch can be motor operated The local remote switch latches non spring return in the corresponding switch position Fig 12 Control panel section a Local remote switch maintained contact non spring return...

Page 17: ...e 8 5 HV HRC current limiting fuse assembly The HV HRC current limiting fuse assembly protects downstream cable runs and or devices The fuses used in SIMOSEC switchgear are manufactured by Bussman The fuses comply with IEC 60282 1 and ANSI IEEE C37 41 They are a general purpose current limiting fuse The time current characteristics of the fuses comply with the parameters for E rated fuses as defin...

Page 18: ...on When the cable compartment door is opened the switch cannot be operated from the GROUNDED position to the OPEN position Option Shunt release on the operating mechanism of the three position switch dis connector Option TRIPPED indication of the fuse in the fuse switch panel switch at a remote electrical indication with a normally open contact 1NO Option FUSE BLOWN indication with a microswitch P...

Page 19: ...le compartment cover is removed the three position switch disconnector of the transformer panel cannot be DE GROUNDED Note The cable compartment cover can only be removed when the three position switch is in GROUNDED position Closing lock out option If the cable compartment door is opened the three position switch cannot be switched to the CLOSED position Locking device The control gate of the thr...

Page 20: ...C 832 6063 0 FII Protection System option The Fuse Installed Intact Protection Sytsem FII Protection Sytsem prevents moving the three position switch to CLOSED position if any fuse is blown or not installed Fig 15 Shuttter of FII Protection Sytsem ...

Page 21: ...th cable bracket or cable clamps and grounding points for cable shields Access to the cable connection compartment only when feeder has been grounded Features for cable terminal For thermoplastic insulated cables For paper insulated mass impregnated cables For connection cross sections cable size up to 300 mm2 600 kcmil Cable bottom entry from below standard Cable top entry from above optional App...

Page 22: ...llows bottom right on the control panel in the operating mechanism box inside cover Fig 17 Rating plate on the control panel a Switchgear type s Year of manufacturing d Panel number f Order number g Technical data h Test mark for performed acceptance test pressure test of the vessel j Order number of operating instructions Fig 18 Rating plate in the operating mechanism box ...

Page 23: ... Field Service Operation on page 6 Features Easy to read Self monitoring Independent of temperature and pressure variations Option Alarm switch 1NO 1NC for remote electrical indication Fig 19 Ready for service indicator for SF6 gas a Indication of operating state s Green area Panel ready for operation d Red area Panel not ready for operation DO NOT SWITCH Isolate this feeder immediately Fig 20 Pri...

Page 24: ...are not The gas in the measurement box has the same temperature as that in the switchgear The temperature effect is compensated via the same pressure change in both gas volumes 8 11 Voltage detection systems Voltage detection systems are provided for verification of safe isolation from supply Regular tests of the voltage detection systems must be performed by the user and documented Voltage detect...

Page 25: ...tch grounding switch black grip Further accessories according to order documentation purchase order selection Operating lever for three position switch black grip Operating lever for grounding switch red grip Double bit key HV HRC current limiting fuses Surge arresters Test fuses for mechanical simulation of the striker pin of HV HRC current limiting fuses in transformer feeders Fig 23 Test fuse f...

Page 26: ...Description 26 REVISION 02 DESCRIPTION SIMOSEC 832 6063 0 Fig 24 Functional tester Horstmann type HO ST Phase comparison test units e g make Pfisterer type EPV Fig 25 Electronic phase comparer ...

Page 27: ... 65 52 Rated filling pressure pre 2 PSI kPa at 20 C absolute 21 8 150 Min operating pressure pme 2 18 9 130 Ambient temperature T for panels without secondary equipment C 30 to 40 Cable switch panel type CS cable connection panel type CC Rated voltage Ur kV 8 25 15 27 6 Rated continuous current Ir 1 for panel type CS A 600 for panel type CC 600 1200 Rated fault closing current Ima kA asym 32 40 32...

Page 28: ...kA peak 52 65 52 65 52 Metering panel type S MT3 MC3 bus riser panel BR Rated voltage Ur kV 8 25 15 27 6 Rated continuous current Ir 1 A 600 1200 Joint material material Thread Tightening torque Metal joints steel steel e g front plates top plates etc M6 self cutting M8 9 lbf ft 12 Nm 16 lbf ft 21 Nm Grounding bus bar steel copper copper copper steel copper M8 M8 M10 16 lbf ft 21 Nm 16 lbf ft 21 N...

Page 29: ...y means of a wire the distance between a test rod with a diameter of 0 1 in 2 5 mm and a length of 3 94 in 100 mm to dangerous parts must be sufficient Enclosure of live parts under high voltage in switchgear with locking device IP3XD on request Protection against solid foreign bodies Protected against the penetration of solid foreign bodies dia meter 0 1 in 2 5 mm Protection against the ingress o...

Page 30: ...nsport procedures and are exempt from special transport regulations according to ADR Section 1 1 3 1 b 9 5 Type of service location SIMOSEC switchgear can be used in an indoor installation in accordance with IEC 61 936 Power installations exceeding AC 1kV and VDE 0101 and the NEC Outside lockable electrical service locations at places which are not accessible to the public The equipment enclosure ...

Page 31: ...s in temperature vibration high humidity and extremes of temperature For application is other than usual service conditions defined by ANSI IEEE C37 20 3 Consult Siemens SIMOSEC switchgear is largely insensitive to climate and ambient conditions by virtue of the following features No cross insulation between phases Metal enclosure of switching devices e g three position switch in gas filled stainl...

Page 32: ...on factor a as a function of the site altitude in meters above sea level Rated voltage r m s value kV 8 25 15 27 6 Rated short duration one minute power frequency withstand voltage rms value Across isolating distance kV 39 6 39 6 66 Between phases and to ground 36 36 60 Rated lightning impulse withstand voltage peak value Across isolating distance kV 105 105 138 Between phases and to ground 95 95 ...

Page 33: ...miting fuse The time current characteristics of the fuses comply with the parameters for E rated fuses as defined by ANSI C37 46 The fuse dimensions comply with the requirements of DIN 43625 The three position switch disconnector in the transformer feeder of SIMOSEC switchgear in combination with Bussmann HV HRC current limiting fuses was tested in accordance with IEC 62 271 105 and ANSI IEEE C37 ...

Page 34: ...550mm 100 4 not available not available not available Middle cable connection to top 940 mm 37 2250 mm 88 6 not available 940 mm 37 2250 mm 88 6 940 mm 37 2250 mm 88 6 940 mm 37 2250 mm 88 6 not available to bottom 1240 mm 49 2250 mm 88 6 not available 1240 mm 49 2250 mm 88 6 1240 mm 49 2250 mm 88 6 1240 mm 49 2250 mm 88 6 not available Bottom cable enty Main switch or vertical copper bar in upper...

Page 35: ...he shipping list The shipping list identifies the contents with the section numbers included in the shipping group Ö Refer to the general arrangement drawing for the location of each section within the group lineup Ö Use this information to simplify the assembly operation and save unnecessary handling Inspection Unpacking Ö Inspect the equipment as soon as possible after receiving for any damage t...

Page 36: ...ing Ö Note visible damage on the delivery receipt Ö Document transportation damage photographically Damage Ö Note any visible damage on the delivery receipt and have damage acknowledged with the driver s signature Ö Detail the damage as much as possible Ö Document transportation damage photographically Ö Include a notation Possible internal damage subject to inspection on delivery receipt Ö Do not...

Page 37: ...he Siemens sales office Ö Siemens must have approval from the carrier before any repair work can be performed Ö The documents must be provided to Siemens before approval can be obtained Note Any determination as to whether the equipment was properly loaded or properly prepared by shipper for over the road travel cannot be made at the destination Shipments are not released from the factory without ...

Page 38: ...ails Installation of high voltage cables Grounding system Tools Auxiliary means Before starting to work on the switchgear provide the tools auxiliary means required Angular hex key 10 mm Allen screwdriver Torx screwdriver T30 M6 Torque wrench 15 27 lbf ft 20 36 Nm Ratchet 1 4 drive Extension 1 4 drive length 6 150 mm Sockets metric 1 4 drive 10 mm 13 mm 16 mm 18 mm Laser level Shim plates for adap...

Page 39: ...t Unloading and transport at site Please observe The handling equipment must be suitable for the weight marked on the transport unit For planning purposes a weight of 900 lbs 400 kg per panel should be assumed Leave the transport units packed as long as possible Open the plastic film only as far as required for transport Lifting cables so that the angle between cables is less than 90 Move the tran...

Page 40: ... bolts that secure the switchgear frame to the wooden pallet Ö Dispose of the packing material in an appropriate manner Ö Lift the transport unit Ö Slowly move the transport unit to the desired location Ö Slowly lower the transport unit Ö Remove the lifting cables spreader bar or other lifting means Ö Remove the lifting device Undo the bolts Remove the lifting device Reinstall the bolts protection...

Page 41: ... onto the mounting position Storage When switchgear is not to be installed immediately it should be unpacked inspected within 15 days of receipt and stored in a clean dry location Indoor switchgear is neither weather resistant nor drip resistant Ö Store SIMOSEC equipment indoors Ö Provide an adequate covering and place a heat source of approximately 100 watts output within each panel to prevent co...

Page 42: ...itch must be brought to the initial position again by hand The following check can be carried out safely with the panel in operation Ö Undo the four screws a of the front cover and remove this front cover Ö Insert the top of a screwdriver through the cutout of the red green plastic disc Fig 30 Screwdriver in cutout of the red green plastic disc Ö Push the small lever of the microswitch and keep it...

Page 43: ...s position If the ready for service indicator remains in this position showing the green area please check whether the magnet is positioned at the mark Fig 31 Position of the ready for service indicator magnet Ö If the magnet is positioned exactly on the lower mark the gas pressure is correct Fig 32 Magnet positioned on the lower mark Ö Fasten the front cover to close the front side of the panel ...

Page 44: ...ll between the end wall and the frame of the end panel Partition walls are only used to separate individual panels respectively the cable compartments see Fig 37 Bolted joint of panels page 47 The end panels are shipped from the factory without partition wall except for group orders without a specified panel configuration In this case remove the partition wall before starting installation Installi...

Page 45: ... mm m as a maximum Ö Align the panel in horizontal position Ö Align the panel in vertical position Check to assure that the panel is aligned levelled to a maximum level difference of 0 04 in yd 1 mm m Fastening the panel to the foundation Fasten the panel to the foundation at 4 points at least There are two possibilities for fastening the panel to the foundation bolting to sill channels not furnis...

Page 46: ...illing dust and debris from the panel Ö Align the panel in horizontal and vertical position Ö Bolt the panel to the foundation inserts without distorting the panel 12 3 Aligning and joining another panel For trouble free operation all panels must be in vertical position and may only have a horizontal level difference mis alignment of 0 04 in yd 1 mm m Ö Establish the same level 0 04 in yd 1 mm m u...

Page 47: ...ining rear walls In case of free standing i e installed with an aisle behind the switchgear arrangement the rear walls of the panels must be joined with connecting links Ö Bolt the connecting link onto the rear walls Fig 37 Bolted joint of panels a Bolted joints at the panel frame s Partition wall d Bolt with contact washer f Pressnut Fig 38 Joining rear walls for free standing arrangement only a ...

Page 48: ... installation from the front side Cleaning insulators bus bars Ö Clean insulators bus bars with cleaning agent household cleaner and a lint free cloth Ö Dry insulators bus bars with a lint free cloth Ö Do not use any abrasive cleaner or wire brush on plated contact surfaces Fig 39 Access to bus bar compartment a Bus bar compartment s Front cover of bus bar compartment ...

Page 49: ...mble the bus bars and the fixing material on the points of contact of the panel Ö Screw the bus bar tight tightening torque 37 lbf ft 50 Nm a Insulator s Spacer d Bus bar f Conical spring washer g Holding clip h Shrink on sleeve optional j Bolt M10 for bus bars Fig 40 Fastening bus bars ...

Page 50: ...ng cap and align with holding clip Ö Snap insulating cap onto holding clip Ö Check that insulating cap is properly seated in the holding clip Fig 41 Installing insulating cap for over 15 kV a Bus bar joint s Bus bar with heat shrink d Holding clip f Insulating cap of bus bar end piece g Insulating cap of bus bar joint ...

Page 51: ...us bar is pre mounted The ground bus bars of the panels must be connected by jumpers Ö Interconnect the ground bus bars by the jumpers Ground bus bar standard Fig 42 Bolted joint of ground bus bar standard Ground bus bar 25 kA 1s Fig 43 Bolted joint of ground bus bar 25 kA 1s a Panel frame d Ground bus bar g Nut s Pressnut f Conical spring washer h Carriage head bolt j Connection bar delivery posi...

Page 52: ...tion for the station ground the two end panels every third panel of the switchgear each metering panel The station ground can be optionally connected to the panel internally or externally Ö Select mounting direction of station ground internal or external Ö Bolt the station ground to the switchgear frame apply 52 lbs ft or 70 Nm Check that the switchgear frame is properly grounded Fig 44 Switchgear...

Page 53: ... Align the hole pattern of the cable lug of the cable connection Securing high voltage cable to cable bracket If the C rail see Fig 49 Page 61 is located in the area of the cable termination shift the cable bracket so that the cable clamps are located at the required distance from the termination When securing the cables ensure that the cable clamps are around the outer sheath of the cable The cab...

Page 54: ...al connection compartment Connecting cable shields The cable shields of all three phases L1 L2 and L3 are connected to one common grounding point The cable shields have to be routed through the windows of the current transformers Ö Route the cable shields directly to the C rail or alternatively to the ground bus bar Ensure a minimum clearance of 210 mm 8 27 in to live parts Ö Bolt the cable shield...

Page 55: ...5 Installation Fig 47 Cable connection type CS 2 Fig 48 Cable connection type FS 1 3 The first skirt of the bushing must be wrapped by the cold shrink Field installed cold shrink insulation item a must overlap factory installed heat shrink item f ...

Page 56: ... and note the distance Ö Measure the distance between the upper edge of the cable termination and a reference point e g the middle of the lower hole in the cable lug and note the distance NOTE Before installing read the supplier s documentation of the cold shrink insulation NOTE Before installing the cold shrink insulation should be at room temperature If the cold shrink insulation is installed wh...

Page 57: ...ation to its necessary length Ö Measure from the upper edge i e the side opposite the loose pull tab of the cold shrink and mark the determined length at the cold shrink Ö Cut the cold shrink insulation carefully using a handsaw at the marked distance while turning the cold shrink insulation around its axis a Loose pull tab NOTE While cutting the cold shrink insulation use care that you do not cut...

Page 58: ...k Ö Pull the cold shrink insulation over the cable termination The loose pull tab of the cold shrink insulation must point away from the switchgear cable connection terminal Ö Bolt the the high voltage cable together with the cable connection terminal tightening torque 37 lbf ft or 50 Nm ...

Page 59: ...rink insulation over the bushing so that the end of the cold shrink insulation is located between the first and the second skirt of the bushing You can use the neighboring bushing as reference Ö Pull down the loose pull tab gently while unwinding in a counter clockwise direction ...

Page 60: ...OSEC 832 6063 0 Ö Finish the mounting of the cold shrink insulation by pulling down gently the loose pull tab completely The cold shrink insulation material must fully cover all bare conductors r The cold shrink insulation is correctly installed ...

Page 61: ...f the bolted joint between the cable connection terminal and the bushing type insulator Ö Put the cold shrink for over 15 kV over the cable connection see Installing cold shrink insulation at cable connections on page 56 Ö Bolt terminated cable to the cable connection terminal and avoid undue strain on bushing type insulator For the tightening torques of the cable lugs cable terminations please ob...

Page 62: ... to the cable connection terminal and avoid undue strain on bushing For the tightening torques of the cable lugs cable terminations please observe the manufacturer s instructions however do not exceed 37 lbf ft 50 Nm Fig 50 Cable connection in fuse switch panel a Upper fuse contact s Discharge switch d HV HRC current limiting fuse f Second fuse contact g Post insulator h Grounding point of cable s...

Page 63: ...he bolted joint between the cable and the block type current and or voltage transformers Ö Bolt terminated cable to the cable connection terminal and avoid undue strain on bushing For the tightening torques of the cable lugs cable terminations please observe the manufacturer s instructions however do not exceed 37 lbf ft 50 Nm Fig 51 Cable connection in metering panel a Bus bar s 4MA7 block type c...

Page 64: ... leads of the window type current transformers to be connected 14 2 Connecting low voltage wiring Connect all customer low voltage wiring according to the terminal plug and cable designations of the circuit diagrams of the switchgear 14 3 Connecting the space heater The individual panels of SIMOSEC switchgear are equipped with a space heater to prevent condensation Ö Connect the space heater termi...

Page 65: ...cable codes and regulations Use of proper Personal Protective Equipment PPE see NFPA 70E 16 2 Instructing the operating personnel Ö The operating personnel should have these instructions available Ö Instruct operating personnel in theory and practice of switchgear operation Ö Ensure that the operating personnel are familiar with all operational details when placing equipment into service 16 3 Chec...

Page 66: ...ed and connections are insulated Ö Check correct phase sequence of cables Ö Check correct installation and grounding of cable ground shields Ö Check covers of capacitive test sockets Ö Check grounding connections including bus connections in switchgear and connections to system ground Ö Check that insulating caps are properly installed and undamaged Ö Check insulation for damage Ö Check tightening...

Page 67: ...erlocking conditions of each switching option without using excessive force The switch positions of the SIMOSEC switchgear are described in the operating instructions Testing low voltage system Ö Check the auxiliary circuits according to the circuit diagram and manual Ö Switch on control voltage using an external source Ö Check the indicators according to the circuit diagram and the mimic diagram ...

Page 68: ...each voltage rating of switchgear The presence of this column in no way implies any requirement for a DC withstand test on AC equipment or that a DC withstand test represents an acceptable alternative to AC withstand tests When making DC Tests the voltage should be raised to the test value in discrete steps and held for a period of one minute In accordance with ANSI C37 20 3 Clause 6 5 Field Diele...

Page 69: ...d secure the grounding switch against de grounding opening ÖVerify correct terminal phase connections with respect to next incoming feeder Apply operational high voltage to opposite substation Connect phase comparison test unit e g make Pfisterer type EPV to the capaci tive test sockets of one phase at the panel and at the adjacent panel Test all three phases using phase comparitor Ö Connect teste...

Page 70: ...artment d Ready for service indicator for SF6 gas f Interlocking lever for cable compartment cover with three position switch g Control gate for three position switch h Cable connection compartment j View port for three position two position grounding switch k Indicator Fuse intact Fuse blown l Three position switch drive Momentary contact rotary control switch ON OFF and local remote switch for t...

Page 71: ...itch filled with SF6 gas is not ready for operation Do not put the switchgear into operation Do not operate the switchgear Contact the Siemens Service Operation 18 2 Verification of safe isolation from supply of a feeder Verify safe isolation from supply of the switchgear or the panel with the voltage indicator of the capacitive voltage detection system Fig 56 Ready for service indicator for SF6 g...

Page 72: ...emove cover from test socket Ö Plug in the voltage indicator Ö Read indicator If the indicator flashes or lights up the phase is energized If the indicator does not flash or light up the phase is not energized Ö Remove indicator Ö Replace cover in test socket Ö Check the other phases in the same way Fig 57 Control board section Sockets for capacitive voltage detection system a Plug in voltage indi...

Page 73: ...switch panel with three position switch disconnector a Opening for the operating lever of the three position switch s Ready for service indicator for SF6 gas d Interlocking lever for cable compart ment cover option f Control gate for three position switch g Socket for capacitive voltage indicators blue label h Socket for capacitive voltage indicators yellow label j Switch position indicator k Indi...

Page 74: ...able lever mecha nism a CLOSED position s OPEN position d GROUNDED position GROUNDED Switch disconnector open Grounding switch closed Cable compartment cover unlocked option Option In the fuse switch panel the feeder can be grounded via a mechanical positively coupled discharge switch located in the panel subframe OPEN Switch disconnector open Grounding switch open Cable compartment cover locked o...

Page 75: ...ing the three position switch to CLOSED position Ö Push control gate of three position switch to the right and hold Ö Insert operating lever with black grip onto operating shaft of operating mechanism Ö Move operating lever up to the CLOSED position TRIPPED optional fuse switch panel only Switch disconnector tripped by a HV HRC current limiting fuse or a shunt trip release Grounding switch open Ca...

Page 76: ...ate of three position switch if desired Ö Stow away operating lever The three position switch is protected against unauthorized use if the control gate is padlocked 19 4 Switching the three position switch to OPEN position Ö Push control gate of three position switch to the right and hold Ö Insert operating lever with black grip onto operating shaft of operating mechanism Ö Move operating lever do...

Page 77: ...unauthorized use if the control gate is padlocked 19 5 Switching the three position switch to GROUNDED position Ö Establish safe isolation from supply voltage Verify that the panel feeder of the three position switch is isolated from supply Use the capacitive voltage detection system see Verification of safe isolation from supply with the capacitive voltage detection system on page 72 Ö Remove pad...

Page 78: ...that the discharge switch is closed i e the movable grounding contact option is touching the second fuse contact through the inspection window of the cable compartment cover Position of discharging contacts with discharge switch in GROUNDED position Ö Remove operating lever Ö Install padlock at center position of control gate of three position switch if desired Ö Stow away operating lever The thre...

Page 79: ...ee position switch Ö Push control gate of three position switch to the left and hold Ö Insert operating lever with red grip onto operating shaft of operating mechanism Ö Move operating lever up to the OPEN position OPEN position in fuse switch panel Ö Verify that the discharge switch is in OPEN position i e the movable grounding contact option is not touching the second fuse contact through the in...

Page 80: ...ible if the FII Protection System is active Switch to CLOSED position The shutter of the FII Protection System is visible in the slot for closing opening of the three position switch Fig 62 Shuttter of FII Protection System To switch the three position to CLOSED position is blocked by the shutter Fig 63 Switching to CLOSED position blocked by shutter Ö Check if fuses are blown or not installed Ö R...

Page 81: ...en if the FII Protection System is active or not Fig 64 Switching to OPEN position is always possible Ö Switch the three position switch to OPEN position Ö Check if fuses are blown or not installed Ö Replace or install fuses Ö Check if the shutter of the FII Protection System is still visible in the slot for closing opening of the three position switch ...

Page 82: ...f the make proof grounding switch Fig 65 Control panel of cable grounding panel with make proof grounding switch Fig 66 Control panel of bus bar grounding panel with make proof grounding switch a Opening for the operating lever mecha nism of the make proof grounding switch s Ready for service indicator for SF6 gas d Control gate for fault make grounding switch f Socket for capacitive voltage indic...

Page 83: ... grounding switch Switchgear ready for service Operating lever available Absence of voltage feeder isolated Fig 67 Switch positions of the make proof grounding switch with detachable lever mechanism a GROUNDED position s OPEN position GROUNDED Make proof grounding switch closed Cable connection com partment unlocked OPEN Make proof grounding switch open Cable connection com partment locked ...

Page 84: ... Remove padlock if present from control gate of make proof grounding switch Ö Push control gate of make proof grounding switch to the left and hold Ö Insert operating lever with red grip onto operating shaft of operating mechanism Ö Move operating lever down to the GROUNDED position The bus bar grounding switch is in the GROUNDED position Ö Remove operating lever Ö Install padlock at center positi...

Page 85: ...oved Verify that all covers have been reinstalled Ö Remove padlock if present from control gate of make proof grounding switch Ö Push control gate of make proof grounding switch to the left and hold Ö Insert operating lever with red grip onto operating shaft of operating mechanism Ö Move operating lever up to the OPEN position r The bus bar grounding switch is in the de grounded position Ö Remove ...

Page 86: ...f the panels allocated for this purpose or by means of grounding cables Grounding cables are not furnished as part of SIMOSEC switchgear Grounding cables are available from a number of suppliers including W H Salisbury Co and A B Chance Hubbell Power Systems Grounding cables should be used in accordance with the instructions of the grounding clamp manufacturer and in accordance with applicable reg...

Page 87: ...d We recommend an annual visual inspection If required the intervals have to be adju sted to the climatic and local ambient conditions Independently of the regular maintenance immediately determine the cause of faults and short circuits as well as partial discharges and replace damaged parts by original parts if required If you have any questions please contact Siemens Service see Field Service Op...

Page 88: ...witchgear assemblies are enclosed on all sides and top with sheet metal Access into the enclosure is provided by doors or removable covers Although the bus and connections may be covered with insulating materials in metal enclosed switchgear assemblies it is a coordinated insulation system insulation plus air or creep distance equals a given insulation level 22 1 Recommended Hand Tools SIMOSEC swi...

Page 89: ...emes B De energize all direct and back feed power and control sources test and ground C Disconnect all voltage and control power transformers D Open all disconnects E Ground outgoing circuits 3 Include the following items in your inspection procedure A Check general condition of switchgear installation B Inspect switchgear interior for accumulation of dust dirt or any foreign matter C Examine indi...

Page 90: ... dielectric strength Use only water and household cleaner to clean insulation To clean the switchgear or single components please use the recommended cleaning agents and aids Cleaning agents and cleaning aids Cleaning agents and cleaning aids Contents Use WD40 Water resistant spray oil Corrosion protection for sliding parts Household cleaner and water Cast resin parts control panels covers transfo...

Page 91: ...tifying the panel The accessibility safety measures and work operations are dependent on the panel type Identify the panel type and proceed accordingly Touch up set Contents Use 8DX2 011 Paint pen in color Light Basic SN700 Scratches impacts bare spots 8DX2 012 Paint tin in color Light Basic SN700 Scratches impacts bare spots on request Paint pen in color light gray No 61 per ASTM D1535 97 Munsell...

Page 92: ...ding switch Screwed on cable compartment cover panels without switching devices e g ME1 Open interlocked cable compartment door Ö Check panel grounding see Switching the three position switch to GROUNDED position on page 77 Fig 69 Position of grounding contacts with discharging switch in CLOSED position Fig 70 Position of grounding contacts with discharging switch in OPEN position Fig 71 Switch di...

Page 93: ...lower fuse contacts through the inspection window of the cable compartment cover or that the moving contacts of the switch disconnector are in the GRD grounded position Ö Push interlocking lever upwards and hold in this position Fig 72 Push interlocking lever upwards Ö Open the cable compartment door Fig 73 Open cable compartment door Ö Release the interlocking lever ...

Page 94: ...artment door Close the cable compartment door To close the cable compartment door proceed in reverse order Remove the screwed on cable compartment cover Ö Check panel grounding see Switching the three position switch to GROUNDED position on page 77 Ö Remove the 4 screws in the corners of the cable compartment cover Fig 75 Screwed on cable compartment cover Ö Remove the screwed on cable compartment...

Page 95: ...cover Ö Remove the screws that secure the compartment cover Ö Remove the compartment cover Fig 76 Access to the compartment for customer low voltage equipment a Compartment cover s Screwed on cover d Compartment for customer low voltage equipment f Control panel cover for a panel without switching devices g Control panel cover for a panel with switching devices ...

Page 96: ... be verified before performing any tests Check the following at each panel All grounding connections properly made Proper operation of grounding switches Check that all three movable grounding contacts of the discharging switch touch the cable termination point as shown in Fig 69 page 92 and that the moving contact of switch disconnectors are in the GRD grounded position as shown in Fig 70 page 92...

Page 97: ...ons at the capacitive test sockets of the panel to be tested as compared to the test sockets of an adjacent panel conntacted to the same main bus bar and whose three position switch disconnector is closed The phase connections are verified using a phase comparison test unit Ö Plug the test leads of the phase comparison test unit into the L1 test sockets of the two panels Fig 78 Use of electronic p...

Page 98: ...e Ö Ground the cable to be tested Ö OPEN compartment cover see Removing the cable compartment cover on page 92 Ö Connect source of test voltage to the cable connection point of cable to be tested Ö Switch switching devices of panel to be tested to test position OPEN position Ö Test cable in accordance with instructions of the test equipment manufacturer Ö Do not exceed test voltage recommended by ...

Page 99: ...manufacturer s recommendations Ö Reconnect the cable shield to ground Ö Reinstall the cable compartment cover The cable shield has been tested Other cable shields can be tested or the panel can be put into operation again 25 Replacing HV HRC current limiting fuses Always replace the HV HRC current limiting fuses in all three phases The actions described in this section are in logical order In prac...

Page 100: ...25 3 Checking the fuse tripping mechanism When first placing the SIMOSEC switchgear into service and before installing replacement HV HRC current limiting fuse check the tripping behavior of the switch disconnector in all three phases preferably by means of test fuses To check the fuse tripping mechanism on switchgear connected to the power system the panel to be tested must be isolated and ground...

Page 101: ...itch disconnector Verify by control the movement of the switch position indication see Fig 5 Switch position indication page 12 that the tripping mechanism is charged While switching the three position switch from CLOSED to OPEN position the switch position indicator changes from TRIPPED to OPEN This means that the stored energized mechanism is pre charged Fig 80 HV HRC current limiting fuse assem...

Page 102: ...er end of the fuse in the upper clip and then move the fuse to vertical and install the lower end of the fuse in the lower fuse clip Ö Check that the fuse is installed uniformly into both the upper and lower fuse clips 25 5 Completing fuse replacement Ö Install cable compartment cover see Close the cable compartment door on page 94 Ö Put fuse switch panel into operation see Placing SIMOSEC switchg...

Page 103: ... SF6 Silicone rubber The switchgear does not contain hazardous materials Auxiliary devices such as short circuit indicators relays instruments etc should be disposed of as electronic scrap Batteries have to be disposed of professionally As for disposal of SF6 gas and further information please contact Siemens Service see Field Service Operation on page 6 27 Help Should these operating instructions...

Page 104: ... End wall installing 44 Environmental protection 103 F FII Protection System 20 80 Fuse fitting 102 Fuse removing 100 Fuse replacement completing 102 Fuse replacement preparing 99 Fuse switch panel connecting to high voltage 62 Fuse tripping mechanism checking 100 Fuse Installed Instact Protection System 20 Fuse Installed Intact Protection System 80 Fuses replacing 99 G Gas density SF6 gas checkin...

Page 105: ...location 30 SF6 gas 23 71 Shipping damage claims 36 SIPROTEC 4 17 Site altitude 32 Standards 30 Station ground to switchgear frame connecting 52 Storage 41 Switch position indicator make proof grounding switch 82 Switch position indicator three position switch 73 Switchgear cleaning 90 Switchgear electrical test 66 Switchgear access 91 Switchgear extension 65 Switchgear features 7 T Technical data...

Page 106: ...Imprint Siemens AG Energy Sector Division Power Distribution Schaltanlagenwerk Frankfurt Carl Benz Str 22 D 60386 Frankfurt Siemens AG 2010 ...

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Siemens SIMOSEC, Operating Instructions Manual

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