8PQ9800 1aa65
8PQ9800 1aa65
Installation.................................................................................................................................................................................................. 11/9
Rated Currents and Initial Short-Circuit AC Currents of Three-Phase Distribution Transformers with 50 to 3150 kVA .............................. 11/11
Short-Circuit Current Carrying Capacity of the Distribution Busbars and Functional Units ........................................................................ 11/12
General notes
Caution!
This configuration guide is no customer documentation and no technical catalogue. The passing on of the documentation is not
permitted!
For the project planning of the low voltage switchboard SIVACON S8 Siemens provides the software tool SIMARIS CONFIGURATION
(SCF). The software assists the user in the process of the planning up to manufacturing of the switchboard.
The planning and dimensioning of low voltage switchgears is very complex. Also with the support by the software tool SIMARIS
CONFIGURATION the specialized knowledge of the user is very important furthermore.
This configuration guide shall support the user at his work with the software tool. Supplementary information and data are provided. The
configuration guide is not able to replace the software tool.
To enable the universal use of the tool, not all basic technical rules are implemented in the software. The user is responsible for correct
technical planning and execution of the switchboard!
With SIMARIS CONFIGURATION the technical range of the switchboard SIVACON S8 defined as standard can be projected. Divergent
project-specifically solutions can be developed as a special construction. For this the Engineer To Order (ETO) process is defined at
Siemens.
For a special construction has to be regarded also the necessity by additional design verifications besides the technical clarification and
commercial assessment.
Definitions
The definitions explained below are Design rule 2 Note: The isolating gap may also be
used in conformity with VDE 0660, Part Specified rule for the design of an established by actuation of a suitable
500 respectively 600-1and 600-2 as ASSEMBLY which may be applied as device without mechanical movement of
well as IEC 60439-1 respectively IEC an alternative to a verification test the withdrawable unit.
61439-1 and IEC 61439-2.
Routine verification 2 Removed position 1,2
Low-voltage switchgear and Verification of each ASSEMBLY Position of a removable part or
controlgear Assembly 1,2 performed during and/or after withdrawable unit when it is located
Assembly of one or more low-voltage manufacture to confirm whether it outside the switchgear and controlgear
switching devices combined with complies with the requirements of the assembly and mechanically and
corresponding operating equipment for relevant ASSEMBLY standard electrically disconnected from it.
control, measuring and signalling tasks
and with protective and control devices, Type-tested low-voltage switchgear Mounting frame 1,2
etc. The individual devices are and controlgear assembly (TTA) 1 Framework designed to support various
completely assembled by the Low-voltage switchgear and controlgear components and suitable for installation
manufacturer, including all internal assembly which complies with the in an ASSEMBLY.
electrical and mechanical connections original type or system of the type-
and construction components. tested switchgear and controlgear Enclosure 2
assembly type-tested in accordance Housing affording the type and degree
ASSEMBLY system 2 with this standard without significant of protection suitable for the intended
Full range of mechanical and electrical deviations. application
components (enclosures, busbars,
functional units, etc.), as defined by the Functional unit 1,2 Section 1,2
original manufacturer, which can be Part of a switchgear and controlgear Constructional unit of an ASSEMBLY
assembled in accordance with the assembly with all electrical and between two successive vertical
original manufacturer’s instructions in mechanical components which delineations
order to produce various ASSEMBLIES contribute to the execution of the same
function. Sub-section 1,2
Power switchgear and controlgear Constructional unit of an ASSEMBLY
assembly (PSC-ASSEMBLY) 2 Removable part 1,2 between two successive horizontal or
Low-voltage switchgear and controlgear Part which is intended to be removed vertical delineations within a section.
ASSEMBLY used to distribute and entirely from the ASSEMBLY and
control energy for all types of loads, replaced whilst the circuit to which it is Compartment 1,2
intended for industrial, commercial and connected may be live. section or sub-section enclosed except
similar applications where operation by for openings necessary for
ordinary persons is not intended Withdrawable part 2 interconnection, control or ventilation.
Removable part intended to be moved
Design verification 2 from the connected position to the Transport unit 1,2
Verification made on a sample of an isolated position and to a test position, if Part of an ASSEMBLY or a complete
ASSEMBLY or on parts of any, whilst remaining mechanically ASSEMBLY suitable for transportation
ASSEMBLIES to show that the design attached to the PSC-ASSEMBLY. without being dismantled.
meets the requirements of the relevant
ASSEMBLY standard Connected position 1,2
1
Position of a removable part or Acc. IEC60439-1
NOTE: Design verification may withdrawable unit in which it is fully (DIN VDE 0660 part 500)
comprise one or more equivalent and connected for the intended function.
2
alternative methods consisting of Acc. IEC61439-1/2
testing, calculation, physical Test position 2 (DIN VDE 0660 part 500-1/2)
measurement or the application of Position of a withdrawable part in which
design rules. the relevant main circuits are open on
its supply side but not necessarily
Verification test 2 isolated and in which the auxiliary
Test made on a sample of an circuits are connected allowing
ASSEMBLY or on parts of operation tests of the incorporated
ASSEMBLIES to verify that the design devices, the withdrawable part
meets the requirements of the relevant remaining mechanically attached to the
ASSEMBLY standard PSC-ASSEMBLY
NOTE: Verification tests are equivalent NOTE: The opening may also be
to type tests. achieved without any mechanical
movement of the withdrawable part by
Verification assessment 2 operation of a suitable device.
Design verification of strict design rules
or calculations applied to a sample of Disconnected position 1,2
an ASSEMBLY or to parts of Position of the withdrawable unit in
ASSEMBLIES to show that the design which isolating gaps in the main and
meets the requirements of the relevant auxiliary circuits are open while it
ASSEMBLY standard remains mechanically connected to the
switchgear and controlgear assembly.
Characteristics
Un rated voltage
highest nominal value of the a.c. (r.m.s.) or d.c. voltage, declared by the ASSEMBLY manufacturer, to which the
main circuit(s) of the ASSEMBLY is (are) designed to be connected.
Ue rated operational voltage (of a circuit of an ASSEMBLY)
value of voltage, declared by the ASSEMBLY manufacturer, which combined with the rated current determines its
application.
Ui rated insulation voltage
r.m.s withstand voltage value, assigned by the ASSEMBLY manufacturer to the equipment or to a part of it,
characterising the specified (long-term) withstand capability of the insulation
Uimp rated impulse withstand voltage
impulse withstand voltage value, declared by the ASSEMBLY manufacturer, characterising the specified withstand
capability of the insulation against transient overvoltage
In rated current
value of current, declared by the ASSEMBLY manufacturer taking into consideration the ratings of the components,
their disposition and application, which can be carried without the temperature-rise of various parts of the
ASSEMBLY exceeding specified limits under specified conditions
Ipk rated peak withstand current
value of peak short-circuit current, declared by the ASSEMBLY manufacturer, that can be withstood under
specified conditions
Icw rated short-time withstand current
r.m.s value of short-time current, declared by the ASSEMBLY manufacturer, that can be carried
without damage under specified conditions, defined in terms of a current and time
The rated diversity factor multiplied by the rated current I nc of the circuits shall be equal to or higher than the
assumed loading of the outgoing circuits, where the assumed load current is equal to the design current IB for
continuously and simultaneously loaded circuits. If the design current IB is not provided then the assumed loading
of outgoing circuits shall be as given in the relevant assembly standard of IEC 61439 and is subject to agreement
between user and manufacturer.
Coordination type 1 After a short-circuit disconnection, the starter may be inoperative as contactor and overload relay damage is
(for motor starters) permissible
Coordination type 2 The overload relay or other parts must not be damaged. The contactor contacts may be welded, provided they can
(for motor starters) be easily separated
Standards / Specifications
Standards and specifications Low-voltage switchgear and controlgear IEC 61439-2 (DIN EN 61439-1/2; VDE 0660 part 600-1/2)
assembly
Testing of response to internal faults IEC/TR 61641 (VDE 0660 Part 600-2, Supplement 1)
(arcing faults)
Further standards and implementation provisions may be required for specific projects. These must also be observed, including the
regionalized variants of IEC 61439 and the standards referenced therein.
Technical Data
Caution!
For installed devices the specifications in the data sheet of the devices are authoritative.
Installation conditions Indoor installation Ambient temperature in the 24-h mean +35 °C
(-5 °C ... +40 °C
Rated operating voltage (Ue) Main circuit up to 690 V (50 Hz)
Note:
Observe the further notes in this chapter:
• Short-Circuit Current Carrying Capacity of the Distribution Busbars and Functional Units
• Test of Dielectric Properties
Environmental Conditions
The outside climate and the external environmental conditions (natural foreign matters, chemically active harmful substances, small animals)
may have varyingly strong influences on switchboards.
In accordance with IEC 61439-1, the environmental conditions for low-voltage switchboards are classified into
• normal service conditions (IEC 61439-1, section 7.1), and
• special service conditions (IEC 61439-1, section 7.2).
SIVACON S8 low-voltage switchboards are designed for indoor installation under the following operating conditions according to
IEC 61439-1:
1)
According to IEC61439-1:2020
Additional Environmental conditions with their limiting values (Definition acc. IEC 60721-3-3:1994, 3K4)
If the environmental conditions are classified differently, they must be evaluated before the offer is submitted.
Higher values are permitted only on request.
In case of special service conditions, special agreements must be concluded between the switchboard manufacturer and user. The user
must notify the switchboard manufacturer of any such extraordinary service conditions.
• Values regarding ambient temperature, relative humidity and/or altitude which deviate from normal service conditions.
• Occurrence of fast temperature and/or air pressure changes which may result in extraordinary condensation inside the switchboard.
• Atmospheres which may contain an essential share of dust, smoke, corrosive or radioactive components, vapors or salt (e.g. H2S, NOx,
SO2, chorine …)
• Occurrence of intense vibrations and impact → see chapter Arc resistant / earthquake safety.
Environmental Class Environmental influence sizes with their limiting values Measures
parameters (Definition acc. IEC 60721-3-3)
> 3K4 High air temperature > 40 °C Switchboard room air
conditioning
conditions
climatic
Further
special
Special grease for maintenance of power contacts (8PQ9400-3AA71: BARRIERTA I EL 102, quantity 200 g, Fa. Klüber Lubrication
Deutschland KG) can be selected on plant level in the SCF by typing in the required quantity.
At higher concentrations of pollutant (> 3C2), reducing measures are required, for example:
• Suction of the air for the service room from a position with low concentration
• Slight over-pressurization of the service room (e.g. through injection of unpolluted air into the switchboard)
• Switchboard room air conditioning (temperature reduction, relative air humidity < 60%, application of pollutant filters if required)
• Temperature rise reduction (over dimensioning of switching devices or components such as busbars and distribution busbars)
If the conditions during transport, storage and installation, e.g. temperature or air humidity values, deviate from the normal service conditions
specified in this chapter, the respectively required measures have to be agreed upon between the switchboard manufacturer and user.
* Classes and Environmental conditions with their limiting values: Definition acc. IEC 60721-3-3:1994
** the selection “corrosive gases” (selection only available for own business) generates a tinned execution of vertical busbars and
withdrawable unit cable connection busbars for OFW sections. 8PQ9700-1AA47 is configured in each normal size withdrawable unit to
represent the use of special grease.
Rating plate
Each switchboard is equipped with a rating plate located in the left-hand end cubicle on the inside of the door. If the switchboard installation
is subsequently expanded by way of more cubicles supplied, there will be a rating plate in the left-hand cubicle of the new section of the
switchboard installation.
Installation
The following minimum clearances between the switchboard and obstacles must be observed:
Switch board
3) While adding of the right cubicle, the protrusion of the main busbar connection brackets must be considered!
Top busbar position: protrusion 90 mm → recommended clearances >150 mm
Rear busbar position: protrusion 54 mm → recommended clearances >100 mm
Altitude
The altitude of the site of installation shall not be above 2000 m over MSL.
Caution!
For switchboard and equipment to be used at higher altitudes, it is necessary to take into account the reduction of the dielectric strength, the
switching capability of the devices and of the cooling effect of the air.
Up to 2000 m 1
Up to 2500 m 0,93
Up to 3000 m 0,88
Up to 3500 m 0,83
Up to 4000 m 0,79
Up to 4500 m 0,76
Up to 5000 m 0,70
Weights
Weights of functional units and cubicles are calculated in the software tool.
These values serve for the orientation only!
Not contained are wiring, cable and all material this is not configured by the software tool.
For maximum static loads on doors / covers refer to Technical Information “8PQ9800-1AA67 Frame and Enclosure”
Packaging
The choice of the package type in the software tool serves the pricing.
Only the transport skids or transport bottom are configured in the software tool.
For the packaging the local regulations must be taken into account.
Packing Types
Air transport
Wooden bottom
Aluminium foil
Tarred board
PE foil (bag)
Desiccant
Backer crate
Foundation frame
Rated Currents and Initial Short-Circuit AC Currents of Three-Phase Distribution Transformers with 50 to 3150
kVA
Power Loss
The power loss values stated below represent approximate data for one cubicle with the main circuit of functional units to determine the
power loss to be extracted from the control room. If required, the power loss of additional auxiliary equipment must be taken into account.
Short-Circuit Current Carrying Capacity of the Distribution Busbars and Functional Units
A reduced short-circuit strength of the outgoing feeders opposite the main busbars is permissible in accordance with
IEC 61439-1, section 8.6.1:
8.6 Internal electrical circuits and connections of switchgear and controlgear assemblies
8.6.1 Main circuits
…
Within one section, the conductors (including distribution busbars) between the main busbars and the supply side of functional units as well
as the components included in these units may be rated on the basis of the reduced short-circuit stresses occurring on the load side of the
respective short-circuit protective device within each unit, provided that these conductors are arranged so that under normal operation an
internal short-circuit between phases and/or between phases and earth is not to be expected.
Note:
The definition above results from the fact that, in most cases, the distribution busbars, contact systems for withdrawable units and the other
supply lines to functional units that branch off the main busbar are designed for considerably lower currents than the main busbar. With the
small cross-sections that are adequate for the low feeder currents from the point of view of heat development, there is no point in aiming for
the same dynamic and thermal short-circuit strength as for the main busbar.
Example:
If a prospective short-circuit current of 100 kA is to be expected and it is intended to use a 3VA2463 circuit breaker, the circuit breaker must
have a switching capacity of at least 100 kA. The functionality of the circuit breaker limits the current to a let-through current* with a peak
value of approx. 53 kA, which corresponds to an rms value of only around 38 kA. Then, only this reduced current puts a load on all
conductors of the circuit for the very short breaking time of the circuit breaker.
Test of dielectric properties of the switchgear in due consideration of devices with reduced dielectric properties in accordance with
IEC 61439-1, section 10.9.:
10 Design verification
10.1 General
...
Where tests on the ASSEMBLY have been conducted in accordance with the IEC 60439 series, prior to the publication of the relevant
product standard in the IEC 61439 series, and the test results fulfill the requirements of the relevant part of IEC 61439, the verification of
these requirements need not be repeated. ...
8.4.3.2.2 Requirements for earth continuity providing protection against the consequences of faults within the ASSEMBLY
…
All exposed conductive parts of the ASSEMBLY shall be interconnected together and to the protective conductor of the supply or via an
earthing conductor to the earthing arrangement. These interconnections may be achieved either by metal screwed connections, welding or
other conductive connections or by a separate protective conductor. In the case of a separate protective conductor Table 3 shall apply. …
…
Certain exposed conductive parts of an ASSEMBLY that do not constitute a danger
• either because they cannot be touched on large surfaces or grasped with the hand,
• or because they are of small size (approximately 50 mm by 50 mm) or so located as to exclude any contact with live parts,
need not be connected to a protective conductor.
This applies to screws, rivets and nameplates. It also applies to electromagnets of contactors or relays, magnetic cores of transformers,
certain parts of releases, or similar, irrespective of their size.
When removable parts are equipped with a metal supporting surface, these surfaces shall be considered sufficient for ensuring earth
continuity of protective circuits provided that the pressure exerted on them is sufficiently high. …
8.4.3.2.3 Requirements for protective conductors providing protection against the consequences of faults in external circuits
supplied through the ASSEMBLY
…
A protective conductor within the ASSEMBLY shall be so designed that it is capable of withstanding the highest thermal and dynamic
stresses arising from faults in external circuits at the place of installation that are supplied through the ASSEMBLY. Conductive structural
parts may be used as a protective conductor or a part of it. …
…
For PEN conductors, the following additional requirements apply:
• the minimum cross-sectional area shall be 10 mm2 copper or 16 mm2 aluminium
• the PEN conductor shall have a cross-sectional area not less than that required for a neutral conductor
• the PEN conductors need not be insulated within an ASSEMBLY
• structural parts shall not be used as a PEN conductor. However, mounting rails made of copper or aluminium may be used as PEN
conductors
• for certain applications in which the current in the PEN conductor may reach high values, for example large fluorescent lighting
installations, a PEN conductor having the same or higher current-carrying capacity as the phase conductors may be necessary, subject
to special agreement between the ASSEMBLY Manufacturer and the User.
For details of requirements for terminals for external protective conductors, see 8.8. …
Standard values of rated operating currents in acc. with EN 60947-4-1, VDE 0660-102
Rated Frequency 60 Hz
The change from 50 Hz to 60 Hz results in a derating of 5% as of a rated current of 800 A or higher in acc. with IEC 61439-1, 10.10.3.1.
Caution!
The software tool supports only the rated frequency 50 Hz.
Busbar treatment
Busbar treatment
• None
• Silver-plated (optional)
• Tin-plated (optional)
Corrosive gases
Special treatment of the vertical distribution busbars in withdrawable design (OFW) to the protection against corrosive gases in the
environment (e.g. hydrogen sulphide H2S).
The choice to the wiring auxiliary circuit in the software tool serves the pricing and for the information in technical data.
Wiring of devices
Permitted cross section for devices must be observed and followed. The specifications in the data sheet of the devices are authoritative.
The choice of the insulation material for wires in the software tool serves the pricing and for the information in technical data.
Sliding label Permanent identification using wire sleeves and marker strips. They are
(more signs per lead end) made of a clear plastic with two cavities. One for the wire or cable and
the other for the marking. The marker strips are inscribed using a
thermal transfer printer. This means that labeling can be carried out
quickly and easily.
* Printing can be customer-specific, content must be coordinated in the case of an order (e.g. counter target / number of characters /
connection point ...)
Printing is not possible for: bus lines, loop lines, transformer lines, short cables (e.g. between control voltage rail and terminal blocks), cables
between plug-in units, voltage taps from the main busbar (ETFE).
Einspeise- / Abgangs- und Kupplungsfeld Feeder Circuit-Breaker / Bus Coupler, Longitudinal FCB2BCL ACB
für 2 Offene Leistungsschalter for 2 Air Circuit Breaker
General Abbreviations