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Safety instructions

1

Signal terms and definitions

Symbols used

!

Operation symbol:Identifies an operation. Asks the operator to perform an operation.

r

Result symbol:Identifies the result of an operation.

2

General instructions

Independently of the safety instructions given in these operating instructions, the local
laws, ordinances, guidelines and standards for operation of electrical equipment as well
as for labour, health and environmental protection apply.

Five Safety Rules of Electri-

cal Engineering

The Five Safety Rules of Electrical Engineering must generally be observed during opera-
tion of the products and components described in these operating instructions:

• Isolating.

• Securing against reclosing.

• Verifying safe isolation from supply.

• Earthing and short-circuiting.

• Covering or barriering adjacent live parts.

3

Due application

The switchgear corresponds to the relevant laws, prescriptions and standards applicable
at the time of delivery. If correctly used, they provide a high degree of safety by means
of logical mechanical interlocks and shockproof metal enclosure of live parts.

DANGER!

as used in these instructions, this means that personal injuries can occur if the relevant
precautionary measures are not taken.

!

Observe the safety instructions.

ATTENTION!

as used in these instructions, this means that damage to property or environment can
occur if the relevant precautionary measures are not taken.

!

Observe the safety instructions.

NOTE!

as used in these instructions, this points at facilitations of work, particularities for
operation or possible maloperation.

!

Observe the notes.

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Содержание 8DA series

Страница 1: ...DA Extendable Fixed Mounted Circuit Breaker Switchgear up to 40 5 kV Single Busbar Single Pole Metal Enclosed Metal Clad Gas Insulated Medium Voltage Switchgear INSTALLTION INSTRUCTIONS Order No 861 9273 9 Revision 03 fëëìÉW MNJMPJOMMS ...

Страница 2: ...ify any prior or existing agreement com mitment or relationship The Sales Contract contains the entire obligations of Siemens The warranty contained in the contract between the parties is the sole warranty of Siemens Any statements contained herein do not cre ate new warranties or modify the existing warranty To connect or install devices from other manufacturer s the associated user information a...

Страница 3: ...e commis sioning 30 8 1 Completing busbar assembly and filling with SF6 gas 30 8 2 Assembling panel connections supplied sepa rately and filling circuit breaker housings with SF6 gas 34 9 Performing the power frequency voltage test 36 10 Installation work with SF6 gas after the power fre quency voltage test 38 10 1 Installing solid insulated bars at the panel connec tion and filling the circuit br...

Страница 4: ...ng instructions Isolating Securing against reclosing Verifying safe isolation from supply Earthing and short circuiting Covering or barriering adjacent live parts 3 Due application The switchgear corresponds to the relevant laws prescriptions and standards applicable at the time of delivery If correctly used they provide a high degree of safety by means of logical mechanical interlocks and shockpr...

Страница 5: ...earth and identify power circuits and equipment systems as per the relevant safety standards Training and instruction about the relevant safety standards and the use of appropriate safety equipment Training in first aid and behaviour in the event of possible accidents DANGER The perfect and safe operation of this switchgear is conditional on Observance of operating and installation instructions Qu...

Страница 6: ...r number of the instal lation room Information about available lifting equipment e g mobile crane fork lift truck lifting truck hydraulic jack roller pads If no lifting equipment is available please notify this explicitly 5 2 Switchgear room Please observe the following points when selecting and setting up the switchgear room Transport ways to the switchgear room Distribution and intermediate stor...

Страница 7: ... USNJVOTPKV G fkpq iiqflk fkpqor qflkp Ua G oÉîáëáçå MP 7 fåëí ää íáçå Dimensions of the switch gear room Fig 1 Room height h 2800 mm Fig 2 Room dimensions and wall distances ...

Страница 8: ...or of the switchgear room The panels can be bolted or welded to the base frame Fig 3 Floor opening and fixing points 1 Base frame 2 Floor opening for control cables Standard 3 Floor opening for controlcables end panels 4 Floor opening for control cables gir der on panel width 5 Floor opening for high voltage cables 6 Fixing points 7 External edge of switchgear Fig 4 Base frame a Standing surface ...

Страница 9: ...way that they can be taken out later in the correct order for installation Provide for sufficient ventilation in heated storage rooms DANGER Risk of injury and damage to the stored goods if the storage surface is overloaded or the transport units are stakked Observe the load bearing capacity of the floor Do not stack the transport units DANGER Fire risk No smoking Keep fire extinguishers in a weat...

Страница 10: ...ge the protection of the seaworthy packing is exhausted If the transport units still need to be stored outdoors the seaworthy packing must be regenerated If there is no sufficient knowledge about professional regeneration of the packing Ask for expert personnel via the competent Siemens Service Centre Open the packings Renew desiccant bags Refit the packings so as to reach full protection Weld the...

Страница 11: ...tallation and fixing material 6 Unloading and erecting the transport units 6 1 Packing and transport unit Packing The transport units can be packed as follows on pallets covered with PE protection sheeting in a seaworthy crate switchgear is sealed with desiccant bags in PE protection sheet ing other packings in special cases Transport unit Transport units consist of Individual panels or panel grou...

Страница 12: ... photographically prepare a damage report and inform the Siemens Service Centre immediately Have the transport damages repaired otherwise you may not start installation Check the SF6 gas pressure Refit the packing 6 3 Checking the SF6 gas pressure The housings of circuit breakers and non disconnectable voltage transformers of the switchgear type 8DA are filled with SF6 gas at the factory To exclud...

Страница 13: ...sentative concerned Fig 5 Gas pressure indicators at the panel a Gas pressure indicators for the bus bar compartments number accor ding to the design of the busbar system s Gas pressure indicator for the cir cuit breaker housing Fig 6 Gas pressure indicators at the panel a Minimum permissible gas pressure signalling contact s Actual gas pressure d Maximum permissible gas pres sure signalling conta...

Страница 14: ...s and remove from the pallets only if there are only short transportation ways left inside the switchgear building or the transport units can be set down with the crane directly at the switchgear building The transport unit is screwed on the pallet The fixing points for transport are located behind the front metal cover in the frame and at the rear cross member Remove the metal covers of the panel...

Страница 15: ...enings that have to be crossed and prop up with adjustable supports Fix the bridges to secure them against displacement Clean the switchgear room Special cleanliness is required Draw a marking line at the place of installation in order to align the switchgear Unpack the transport units inside the switchgear building Do not unpack parts supplied with the switchgear in order to avoid loss and damage...

Страница 16: ...nsport unit Lower the transport unit slowly and evenly onto the roller pads 6 6 Setting down the transport units at the place of installation Depending on the constructional facts in the switchgear room there are two basic possibilities for setting down the transport units at the place of installation ATTENTION Sensitive parts of the switchgear may be damaged during transport Push the transport un...

Страница 17: ... down from the narrow side of the floor opening Fig 10 Setting down from the long side of the floor open ing a Transport unit s Floor opening d Door to the switchgear room DANGER The transport units can fall down when they are moved over the floor opening When moving the transport unit on the floor opening take care that the roller pads bars are always touching the foundation completely Check the ...

Страница 18: ...allet Roll the first transport unit up to the final position in parallel to the floor opening Lift the transport unit Remove the roller pads bars from underneath the transport unit To shift the transport unit easily and to protect the floor shims can be laid under as a sliding aid ATTENTION Without roller pads bars underneath the transport units are moved using hydraulic or lifting jacks The trans...

Страница 19: ...nd place it beside the first transport unit at a distance of 500 mm Lift the transport unit Remove the roller pads bars from underneath the transport unit and lay shims under if required Set down the transport unit carefully and push it over the floor opening as described above Align the transport unit roughly observing a side distance of at least 500 mm Remove the shims from underneath the transp...

Страница 20: ...y side Mount these transport units Put other transport units on the free space left etc 7 Assembling the switchgear The points the transport units are interconnected at are called panel joints hereafter Precondition The transport units are standing in the switchgear room and are aligned for assembly see Page 19 Aligning the switchgear Procedure Repeat the following operations for all transport uni...

Страница 21: ... the panel joint Remove all horizontal flange covers from the assembly openings s on the busbar housings f of the panel located on the right of the panel joint Loosen the rear fixing bolts d at the busbar ends Re assembling the busbars This operation is only performed if one of the following devices is mounted on the bus bar housings of the panel located on the right of the panel joint Disconnecta...

Страница 22: ...sembly opening s The busbar supports l remain on the disassembled busbar sections Take the busbar sections g out of the housings with the associated busbar supports l through the vertical flange f Mount the busbar sections at the joints j in the busbar housings h of the panel located on the right of the panel joint Assembly takes place through the vertical flanges k Fig 14 Re assembling the busbar...

Страница 23: ...n of damages Apply a thin film of the supplied mounting paste on the external contact surfaces of the flanges and the O rings sealing rings To do this apply a grease strip of approx 3 mm thickness on the external contact surfaces of the flanges Put the O rings into the grooves of the flanges 7 2 Installing the transport unit Positioning the transport unit The transport unit to be attached is moved...

Страница 24: ...associated insulating rings insulating plates provisionally at the flange side of the already mounted transport unit ATTENTION Without roller pads bars underneath the transport units are moved using hydraulic or lifting jacks The transport units may be damaged Apply auxiliary devices at floor level and only at the supporting frame of the transport units Place boards under the points where auxiliar...

Страница 25: ...tions Continue approaching the transport units until the flanges touch evenly at the insulating plates In case of deviations correct the position of the transport unit compensating any floor unevenness with shims under the corners same points as for roller pads bars Fig 16 Short busbar housing with compensator a Busbar housing s Compensator d Insulating ring thickness 18 mm f Insulating ring thick...

Страница 26: ...26 Fasten M8x65 bolts crosswise with one insulating sleeve each Tightening torque 20 Nm Bolting busbars together The busbars are accessed through the horizontal flanges of the busbar housings assembly openings Fig 18 Flange connections with insulating sleeve a Current transformer mounting plate s Flange d Insulating ring f Compensator g Insulating sleeve ATTENTION Sensitive parts of the switchgear...

Страница 27: ... Page 20 Assembling the switchgear until all transport units are installed 7 4 Completing switchgear installation As a precondition for this work the switchgear must have been completely assembled as described above see Page 20 Assembling the switchgear Tightening the busbar fix ing bolts Tighten the fixing bolts of all busbars and fixed contacts at all panel joints of the switchgear Tightening to...

Страница 28: ...th Prepare the flanges of the cleaned busbar housings for assembly see Page 21 Preparing busbar assembly Clean the contact surfaces of the busbar housing covers with a lint free paper and apply a thin film of grease see Page 21 Preparing busbar assembly Put the covers on the prepared flanges and bolt them tight crosswise Tightening torque 20 Nm Bolting supporting frames together The supporting fra...

Страница 29: ...e panels to the foundation Fasten the panels to the foundation see Page 6 Installation dimensions and floor fixing Bolting earthing busbars together The earthing busbar runs at the rear of the supporting frames The units overlap and are interconnected with two bolts each Remove left hand bolt at the joint s see illustration Fig 20 Bolting supporting frames together a Connecting plate rear s Connec...

Страница 30: ...in advance 8 1 Completing busbar assembly and filling with SF6 gas The individual phases and sections of the busbar called busbar runs hereafter must be filled with SF6 gas at site Each busbar run forms one gas compartment Busbar runs within one transport unit that are already filled and closed hermetically at the factory are not refilled with SF6 gas at site All parts of the switchgear that have ...

Страница 31: ... type with Filter inscription on the cover 2 x 250 g f Busbar housing left hand panel of bus sectionaliser 2 x 250 g g Busbar housing right hand panel of bus sectionaliser 2 x 250 g h Busbar housing right end panel 2 x 250 g j Bus riser housing of bus sectionaliser 2 x 250 g k Connection housing of bus sectionaliser 2 x 250 g l Circuit breaker housing left hand panel of bus sectionaliser 2 x 250 g...

Страница 32: ...into the associated holder in the covers Put the busbar cover with the bags into position observing that no part of the bags is jammed in the sealing surfaces in order to prevent leaks Bolt the covers tight crosswise Tightening torque 20 Nm Evacuating the busbar run with the vacuum pump Before filling SF6 gas in the air must be removed from the busbar run to be filled with gas evacuation One of th...

Страница 33: ...e and the data given in Section Technical data see Description 14 4 Page 22 The pressure depends on the gas temperature Connect the SF6 gas cylinder to the maintenance valve of the evacuated busbar run Fill SF6 into the busbar run until the necessary pressure is reached Check the filling pressure on the pressure indicator of the busbar run and on the pressure indicator of the gas filling equipment...

Страница 34: ...stallation work described hereafter is performed completely on one circuit breaker housing in one panel Assembling panel connec tions supplied separately Remove the provisional cover underneath the circuit breaker housing Prepare the flange of the circuit breaker housing and the flange of the panel connection for assembly see Section Preparing the flanges of the busbar housings Page 24 Bolt the pa...

Страница 35: ...se Put the cover of the rupture diaphragm with the bags into position observing that no part of the bags is jammed in the contact surfaces in order to prevent leaks Bolt the covers tight crosswise Tightening torque 20 Nm Repeat the above work operations for all circuit breaker housings on the same panel where the desiccant bags must also be fitted After completing the replacement of desiccant agen...

Страница 36: ...til the necessary pressure is reached Check the filling pressure on the pressure indicator of the circuit breaker housings and on the pressure indicator of the gas filling equipment Remove the connecting tube of the gas cylinder from the maintenance valve The maintenance valve closes automatically Refit the locking cap of the maintenance valve Adjust the limit pressures on the pressure indicator f...

Страница 37: ... power frequency withstand voltage test Performing the power fre quency voltage test Apply 80 of the rated short duration power frequency withstand voltage consecutively to phases L1 L2 und L3 for 60 seconds each Completing the power fre quency voltage test Switch the voltage transformer disconnector of the disconnectable voltage transformers to CLOSED position After the test mount non disconnecta...

Страница 38: ...on flange of the circuit breaker housing for assembly see Section Preparing the flanges of the busbar housings Page 24 Bolt the solid insulated bar tight using bolts a contact washers s and plain washers d Tightening torque 20 Nm If the circuit breaker housing was ventilated for more than half an hour replace the desiccant bags see Page 34 Assembling panel connections supplied separately and filli...

Страница 39: ...fe isolation from supply Remove the low voltage plug connector at the voltage transformer DANGER High voltage Danger Before starting installation work at the busbar voltage transformers the busbar must have been isolated and earthed Isolate and earth the busbar ATTENTION Sensitive parts of the switchgear may be damaged during installation work at the busbar and the busbar housings While working at...

Страница 40: ...r upwards at the handle together with the adapter plate Fig 26 Busbar voltage transformer 4MT3 shown without cover a Handle s Voltage transformer 4MT3 d Adapter plate f Distance sleeves g Voltage transformer mounting plate h Busbar housing j Outside cone bushing k Hole with setnut for press out bolts ATTENTION Risk of injury While being removed from the bushing the voltage transformer can detach s...

Страница 41: ...is purpose in the adapter plate Press the voltage transformer out of the bushing together with the retaining angles with the help of the press out bolts While doing so screw the press out bolts in uniformly so that the transformer is not canted Fig 27 Busbar voltage transformer 4MU1 a Voltage transformer 4MU1 s Retaining angle with crane eyes d Voltage transformer mounting plate f Busbar housing g...

Страница 42: ...f the voltage transformer Screw two press out bolts into the holes provided for this purpose at the voltage transformer base Press the voltage transformer out of the bushing with the help of the press out bolts While doing so screw the press out bolts in uniformly so that the transformer is not canted ATTENTION Risk of injury The voltage transformer type 4MU1 has a weight of approx 50 kg Secure th...

Страница 43: ...er type 4MT6 has a weight of approx 60 kg Secure the voltage transformer against falling down If necessary transport the voltage transformer with several persons or with suitable aids DANGER High voltage Danger Before starting installation work at the busbar voltage transformers the busbar must have been isolated and earthed Isolate and earth the busbar ATTENTION Sensitive parts of the switchgear ...

Страница 44: ... layer of the outside cone bushing Apply a uniform film of mounting paste to the outside cone bushing Voltage transformer type 4MT3 If not yet pre assembled mount the adapter plate on the voltage transformer ATTENTION Risk of partial discharges at the voltage transformer bushings due to pollution Clean all bushings at the panel and at the voltage transformer carefully before starting installation ...

Страница 45: ...sformer Remove the surge proof stopper size 2 from the bushing at the panel Apply a uniform film of mounting paste to the silicone bushing of the voltage transformer Insert the silicone bushing in the inside cone bushing of the panel Mounting the voltage trans former Place the voltage transformer on the bushing together with the associated fixing material Lower the voltage transformer slowly onto ...

Страница 46: ...s Screw all metal covers to the supporting frames again 13 Tests 13 1 Checking the SF6 gas filling Checking the gas pressure Before commissioning or a rated short duration power frequency withstand voltage test the gas pressures of all gas compartments must be checked On all gas compartments filled at site After having filled the gas compartments observe a temperature compensation time of 24 hours...

Страница 47: ...circuits according to the circuit diagrams Check the voltage transformer circuits up to the m c b or the fuse for short circuits Check the functions of all protection devices with a secondary test unit for relays 13 3 Checking high voltage connections Check the tightening torque of the bolts of the cable plugs according to the manufacturer s instructions Check the earthing of the cable termination...

Страница 48: ...rthing switches several times Mechanical operation of switching devices Switch off all auxiliary and control voltages Charge the circuit breaker operating mechanism by hand Close and open the circuit breaker Close and open the busbar earthing switch several times Checking interlocks and indicators All circuit breakers disconnectors and earthing switches are closed and opened checking the interlock...

Страница 49: ...line diagrams operating instructions warning signs customer specific consignments Make the switchgear accessories available in the switchgear room or in a neighbouring room clearly and ready to hand 14 4 Correcting circuit diagrams Note any modifications which may have been made during installation or commissioning in the supplied circuit diagrams Send the corrected documentation to the responsibl...

Страница 50: ... moitoring 47 Gas quality checking 47 Gas work after power frequency voltage test 38 H High voltage connections checks 47 I Information to Siemens before delivery 6 Installation dimensions 6 Installation material 11 Installation with gas work 30 Installation work checks 48 Installation auxiliary means 10 Installation busbar voltage transformers 43 Installation cables with plugs 46 Installation ear...

Страница 51: ...1 Transport unit erecting 11 Transport unit installation 23 Transport unit unloading 11 V Vacuum pump 32 Voltage transformer 4MT3 40 Voltage transformer 4MT3 removal 40 Voltage transformer 4MT6 42 Voltage transformer 4MT6 removal 42 Voltage transformer 4MU1 41 Voltage transformer 4MU1 removal 41 ...

Страница 52: ...Impressum Power Transmission and Distribution Medium Voltage Schaltanlagenwerk Frankfurt Carl Benz Str 22 D 60386 Frankfurt Siemens AG 2006 ...

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