Siemens 8DA series User manual

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Type 8DA 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
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About these Instructions
These instructions do not purport to cover all details or
variations in equipment, nor to provide for every possible
contingency to be met in connection with installation or
operation.
Should further information be desired or should particu-
lar problems arise which are not covered sufficently by
these instructions, the matter should be referred to the
local Siemens Service Centre.
The contents of this instruction manual shall not become
part of or modify 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 and ratings have to be
considered.
If you want to make suggestions for improvement of
these instructions, or if there is something you do not
understand, please contact the address given below:
Division PTD M2.
Siemens Aktiengesellschaft
Power Transmission and Distribution
Carl-Benz-Str. 22
D-60386 Frankfurt
Germany
Subject to modifications.

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Contents
Safety instructions............................................................................4
1 Signal terms and definitions................................ 4
2 General instructions ............................................ 4
3 Due application.................................................... 4
4 Qualified personnel ............................................. 5
Installation.........................................................................................6
5 Before installation................................................ 6
5.1 Preliminary clarifications...................................... 6
5.2 Switchgear room ................................................. 6
5.3 Installation dimensions and floor fixing ............... 6
5.4 Intermediate storage........................................... 9
5.5 Tools/auxiliary means .........................................10
5.6 Installation and fixing material............................ 11
6 Unloading and erecting the transport units ........ 11
6.1 Packing and transport unit.................................. 11
6.2 Checking the delivery for completeness and trans-
port damage ....................................................... 11
6.3 Checking the SF6-gas pressure .........................12
6.4 Unloading transport units ...................................14
6.5 Transporting the units to the place of installation
...........................................................................15
6.6 Setting down the transport units at the place of
installation ..........................................................16
6.7 Aligning the switchgear......................................19
7 Assembling the switchgear............................... 20
7.1 Preparing busbar assembly ............................... 21
7.2 Installing the transport unit ............................... 23
7.3 Installing further transport units ........................ 27
7.4 Completing switchgear installation ................... 27
8 Installation work with SF6-gas before 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-breaker housings with
SF6-gas .............................................................. 38
11 Removing and installing non-disconnectable bus-
bar voltage transformers .................................... 39
11.1 Removing non-disconnectable busbar voltage
transformers ......................................................39
11.2 Installing non-disconnectable busbar voltage
transformers ......................................................43
12 Final installation work.........................................46
12.1 Mounting cables with plugs............................... 46
12.2 Connecting low-voltage cables ..........................46
12.3 Mounting the metal covers ................................ 46
13 Tests ..................................................................46
13.1 Checking the SF6-gas filling............................... 46
13.2 Checking the circuits of the low-voltage equip-
ment ..................................................................47
13.3 Checking high-voltage connections ................... 47
13.4 Checking electrical connections.........................47
13.5 Checking protection against environmental influ-
ences .................................................................47
14 Commissioning ..................................................48
14.1 Checking the installation work ...........................48
14.2 Test operation ....................................................48
14.3 Checking the accessories ..................................49
14.4 Correcting circuit diagrams ................................ 49
14.5 Instructing the operating personnel ...................49
Index .............................................................................................. 50

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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.
rResult 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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4 Qualified personnel
Qualified personnel in accordance with these instructions are persons certified by the
Switchgear Factory Frankfurt who are familiar with transport, installation, commission-
ing, maintenance and operation of the product and have appropriate qualifications for
their work, e.g.:
• Training and instruction or authorisation to switch on, switch off, 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.
!Qualified personnel.
!Proper transportation and correct storage of the switchgear.
!Correct installation and commissioning.
!Diligent operation and maintenance.
!Observance of the instructions applicable at site for installation, operation and
safety.

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Installation
5 Before installation
5.1 Preliminary clarifications
In order to load the transport units in a suitable installation order, the responsible Sie-
mens Service Centre requires the following information from you several weeks before
delivering the switchgear:
• Sketch of the installation room including the locations and numbers of the individual
switchpanels and the storage space for the accessories
• Sketch of the access route from the public road to the switchgear building and infor-
mation concerning the condition thereof (meadows, arable soil, sand, gravel...)
• Sketch of the transport route inside the switchgear building with the locations and
dimensions of doors and other narrow points, as well as the floor 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 storage spaces
• Construction and load-bearing capacity of the floor
• Illumination, heating, power and water supply
• Dimensions of installation scaffoldings and foundation rails
• Installation of high-voltage cables
• Earthing system
• Cleanliness: Switchgear room free of dirt and dust
5.3 Installation dimensions and floor fixing
To erect and install switchgear type 8DA, the place of installation (switchgear room)
must have certain dimensions. Important data for erection and installation of the
switchgear are, among other things, the room width, depth and height, as well as the
necessary floor openings.

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Dimensions of the switch-
gear room
Fig. 1: Room height h ≥2800 mm
Fig. 2: Room dimensions and wall distances

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Floor openings and fixing
points
Floor fixing Recommendation: A base frame to fasten the panels on should be prepared in the floor
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
control cables (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
aStanding surface

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5.4 Intermediate storage
Storage in closed rooms The following switchgear parts must be stored in closed rooms:
• Unpacked parts
• Transport units which are not packed in seaworthy crates
The storage room must have the following characteristics:
• Well-ventilated
• Free of dust
• Dry and protected against flooding
• Relative humidity should not exceed 50%
• Protected against vermin (e.g. insects, mice, rats)
• Even floor to enable stable storage
• Floor with adequate load-bearing capacity
• Sufficient size to enable clearly arranged storage
!Do not unpack small parts to avoid corrosion and loss.
!Store transport units in such a 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 weatherproof place and mark their locations.
!Identify location of the fire extinguisher.
ATTENTION!
Supplied desiccant bags lose their effectiveness if they are not stored in the
undamaged original packings.
!Do not damage or remove packing of desiccant bags.
!Do not unpack desiccant bags before use.
ATTENTION!
The transport units may be damaged if these are stored outdoors without seaworthy
packing (seaworthy crate).
!Store transport units outdoors in seaworthy packing (seaworthy crate) only.

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!Check transport units for condensation every 4 weeks.
!If the inside of the packing or parts of the switchgear show condensation: Remove
the packing, dry the switchgear and the packing. Refit the packing.
Outdoor storage The storage place must have the following characteristics:
• Protected against rain water
• Protected against flooding as well as melting water from snow and ice
• Protected against pollution and vermin (e.g. insects, mice, rats)
• Even floor to enable stable storage
• Floor with adequate load-bearing capacity
• Sufficient size to enable clearly arranged storage
!Place transport units on planks or square timber for protection against floor humidity.
!Store transport units in such a way that they can be taken out later in the correct
order for installation.
!After 6 months of storage, unpack the transport units and store them in closed
rooms, or regenerate the seaworthy packing (see below).
Regenerating the seawor-
thy packing
After 6 months of storage, 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 PE protection sheeting
hermetically tight and rebuild the seaworthy crates completely.
5.5 Tools/auxiliary means
Before starting to work on the switchgear, provide the tools/auxiliary means required:
• Vacuum pump (e.g. DILO type B048R01), DN8 connection
• Dew-point meter (e.g. DILO type 3-035-R001), DN8 connection
• Percentage meter (z. B. DILO type 3-027-R002), DN8 connection
• Leakage detector (e.g. CPS type LS790)
•SF
6-gas filling device (type 3-393-R001)
• Vacuum cleaner with flexible and thin tube
• 1 set roller pads
• Round-steel bars; diameter: 25 mm, length: 1600 mm for double panel + 600 mm for
each additional panel
• Chain with transport shackles
• Roller crowbars
• Reinforcing bars
• Racks (crank winch)
• Hydraulic jack (2 to 3 t, for vertical and horizontal stroke)
• Emery paper (K 360)
• Step-ladder
• Cable drum 220V~
•Drill
• Torque wrench 8 – 20 Nm, 20 to 70 Nm

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• Shim plates 0.5 to 1 mm
• Cleaning agent HAKU 1025/90
• Soft, lint-free cloth
• Torx reversing ratchet / screwdriver T10/80, T20/100, T25/100, T30/115
• Water level
• Guide string
• Rod magnet with flexible shaft
• Open spanners SW 13, 16, 17, 18, 19, 24, 27, 32 , 36
• Ring spanners SW 13, 16, 17, 18, 19, 22, 24, 27
• Various screwdrivers
• Vernier caliper
• Water pump pliers
• Mirror with flexible shaft (welding mirror)
5.6 Installation and fixing material
Before starting to install the individual components, provide for the required installation
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 groups consisting of up to 4 individual panels
• Accessories
6.2 Checking the delivery for completeness and transport damage
Before installation, the transport units must be checked for completeness and damage.
NOTE!
The packing materials of 8DA switchgear can be disposed of as classified materials. Please observe the local
regulations for disposal and environmental protection.

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Checking for completeness !Check whether the delivery is complete and correct using the delivery note and
packing lists.
!Compare the serial number of the switchgear panels on the delivery note with that
on the packing and the rating plates of the panels.
!Check whether the accessories are complete.
Checking for transport
damage
!Unpack the transport units. Do not unpack parts supplied with the switchgear in
order to avoid loss and damage.
!Inform the forwarding agent immediately about any defects or transport damages; if
required, refuse to accept the delivery.
!As far as possible, document larger defects and transport damages 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 exclude any gas losses
during transportation in the gas compartments filled at the factory, check the gas
pressure indicators on the panels.
ATTENTION!
Transport units may be damaged if stored without intact packing.
!If the transport units are stored before installation, open packing for checks only if
the packing is damaged so much that the content must be assumed to be damaged
as well.
!Refit the packing before installation.
!Observe instructions to intermediate storage (see Page 9, "Intermediate storage").

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!Check the gas pressure in the compartments pre-filled at the factory on the
associated gas pressure indicators. The temperature-dependent limit values must
not be underflown.
!If the filling pressure is too low: Do not assemble the part of the switchgear
concerned and inform the regional Siemens representative concerned.
Fig. 5: Gas pressure indicators at the panel
aGas pressure indicators for the bus-
bar compartments (number accor-
ding to the design of the busbar
system)
sGas pressure indicator for the cir-
cuit-breaker housing
Fig. 6: Gas pressure indicators at the panel
aMinimum permissible gas pressure
(signalling contact)
sActual gas pressure
dMaximum permissible gas pres-
sure (signalling contact)
DANGER!
Operation with incorrect SF6-gas pressure can destroy parts of the switchgear.
!Do not install or put the switchgear into operation with incorrect SF6-gas pressures.

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6.4 Unloading transport units
Lifting packed transport
units with the crane
To avoid damage and pollution, the transport units should be transported as long as
possible in their original packing. Packed transport units are always lifted with the
wooden pallet.
!Use transport tackle / expander to prevent the transport units from being damaged
by the ropes.
!Sling the ropes around the ends of the wooden pallet.
!Unload the transport units and set them down as close to the switchgear building as
possible in order to avoid unnecessary ways.
!Move the transport units into the building, if possible on their wooden pallets. Only
remove packing where absolutely necessary in order to keep the switchgear as clean
as possible.
!Remove plastic sheeting only in the building, right before assembling the transport
units.
Removing transport units
from wooden pallets
Unpack transport units 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 frames.
!Remove all fixing bolts.
Lifting unpacked transport
units with the crane
To lift the transport unit, two round bars with a diameter of 25 mm are required.
Minimum length of the round bars: Width of transport unit plus 400 mm.
The transport holes for pushing the round bars in are marked on the transport units with
a red symbol.
DANGER!
Risk of injury due to transport units falling down. The transport units can slip off the
transport tackle due to the high position of the centre of gravity.
!Do not stay under suspending loads.
!Avoid heavy movement of the load.
!Secure the fixing points of the ropes against slipping off.
ATTENTION!
Parts of the switchgear may be damaged by touching ropes or chains when lifted.
!Use transport tackle / expander.

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!Push the round bars into the transport holes at the front and at the rear.
!Attach ropes or chains at the ends of the round bars.
!Stretch the ropes or chains by lifting the transport tackle carefully.
!If the ropes or chains are touching the transport unit, use transport tackle / expander.
!Lift the transport unit carefully.
6.5 Transporting the units to the place of installation
Preparing the switchgear
room
!Bridge floor openings 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.
Fig. 7: Position of transport holes
Fig. 8: Marking of transport
holes
DANGER!
Risk of falling down when crossing provisionally bridged floor openings with the
transport units.
!Observe sufficient load-bearing capacity of the bridges.
!Support bridges adequately.
!Secure bridges against displacement.

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Transporting the units with
the pallets
!Move the transport units as close as possible to the place of installation (switchgear
room) by means of lifting trucks or fork-lift trucks.
Lifting the transport unit
with hydraulic or lifting
jacks
Two round-steel bars with a diameter of 25 mm are required which are pushed into the
transport holes at the transport unit, same as described for lifting with the crane (see
Page 14, "Unloading transport units").
!Push the round-steel bars into the transport holes at the front and at the rear.
!Support the hydraulic or lifting jacks with robust and stable platforms so that they will
reach the bars in lowered condition.
!Lift the transport unit carefully.
Transporting the unit on
roller pads/bars
!Prepare four roller pads (reinforced rollers) or two bars.
!Lift the transport unit as described above.
!Place the roller pads in position at the external corners of the supporting frame under
the vertical frame supports, or lay the bars crosswise under the supporting frame of
the transport 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 units only at the corners of the supporting frame.
!While pushing, take care not to damage any sensitive parts of the switchgear such
as gas pipes, rupture diaphragms, shafts, etc.
DANGER!
If they are lifted unevenly, the transport units can fall over due to their high centre of
gravity.
!Lift the transport units slowly and evenly.
NOTE!
A transport unit standing on roller pads can only be moved straight ahead. To change the direction, the position
of the roller pads must be changed.
1. Setting down from the narrow side of the floor opening The transport units are moved over the floor opening to the
cable basement coming from the narrow side of the floor
opening, and are set down side by side
2. Setting down from the long side of the floor opening The transport units are set down in front of the long side of
the floor opening to the cable basement , and are pushed
over the floor opening

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Setting down the transport
units from the narrow side
of the floor opening
Precondition: The transport units must be standing on the roller pads / bars without
pallets.
Fig. 9: Setting down from the narrow side of the floor
opening
Fig. 10: Setting down from the long side of the floor open-
ing
aTransport unit
sFloor opening
dDoor 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 moving direction of the transport unit all the time.

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!Roll the first transport unit (end panel) along the floor opening up to its final position.
!Lift the transport unit.
!Remove the roller pads / bars from underneath the transport unit.
!Set down the transport unit carefully.
!Shift the transport unit with hydraulic jacks, lifting equipment or lifting jacks until it is
exactly aligned on its mounting position. Prop the hydraulic equipment or jacks up at
the surrounding walls.
!Roll the next transport unit along the floor opening, place it at a distance of 500 mm
from the first transport unit and align it roughly.
!Lift the transport unit, remove the roller pads / bars and set down the transport unit
carefully.
!Proceed in the same way with the other transport units, keeping a distance of
500 mm between them.
Setting down the transport
units from the long side of
the floor opening
Precondition: The transport units must be standing on the roller pads / bars without
pallet.
!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 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 auxiliary devices are applied.
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 moving direction of the transport unit all the time.
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 auxiliary devices are applied.

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!Set down the transport unit carefully.
!Shift the transport unit with hydraulic jacks, lifting equipment or lifting jacks until it is
exactly aligned on its mounting position. Prop the hydraulic equipment or jacks up at
the surrounding walls.
!If the transport unit is still partly or totally standing on the shims, remove the shims
and carefully set down the transport unit again.
!Roll the next transport unit in front of the floor opening and 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 transport unit as described above.
!Proceed in the same way with all other transport units.
6.7 Aligning the switchgear
To align the switchgear, please follow the illustration below:
Fig. 11: Position of the transport units after erection
aFirst transport unit, completely
aligned
sOther transport units, roughly ali-
gned

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!Align the first transport unit (end panel) completely and bolt it to the foundation (see
Page 6, "Installation dimensions and floor fixing").
!Just align the other transport units (panels) roughly first.
!Keep a distance of at least 500 mm between the transport units for the following
installation work.
If not all parts of the switchgear can be brought into the switchgear room before
installation due to the little space available, proceed as follows:
!Place as many transport units as possible side by 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 units until final assembly.
NOTE!
The activities described hereafter must be carried out by qualified personnel who is
familiar with installation of switchgear type 8DA.
!The switchgear assembling must be done by qualified personnel.
Fig. 12: Term "panel joint"
aPanel joint
sTransport unit on the left of the
panel joint
dTransport unit on the right of the
panel joint