Versatile, Reliable & User Friendly

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8PU Low Voltage Switchboards

Answers for industry.

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Economical, Requirement Oriented & Type Tested:The 8PU Low Voltage Switchboard

Reference Indian and InternationalStandards

IS 8623 : Specification for Low Voltage(Part I) Switchgear & Controlgear Assemblies:

Requirement of Type Tested & PartiallyType Tested Assemblies.

IEC 439 : Low Voltage Switchgear & Controlgear(Part I) Assemblies.

IS 13947 : Specification for Low Voltage(Part I) Switchgear & Controlgear Part I:

General Rules.

IEC 60947 : Specification for Low VoltageSwitchgear & Controlgear.

IS 2147 : Degree of Protection provided byEnclosures for Low Voltage Switchgear& Controlgear.

IS 5082 : Specification for Wrought Aluminium &Aluminium Alloy Bars, Rods, Tubes &Sections for Electrical Purposes.

IS 1897 : Specification for Copper Strip forElectrical Purposes.

IS 11353 : Guide for Uniform System of Marking &Identification of Conductors &Apparatus Terminals.

IS 5578 : Guide for Marking of InsulatedConductors.

Power Control Centre

Drawout

Motor Control Centre

Non Drawout

Motor Control Centre

Non compartmentalisedDistribution Boards

Low voltage Busducts

8PU - Tested as perlatest quality norms

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World Class Products with unmatched featurescatering to the entire low voltage spectrum

When you buy 8PU Switchboards,you buy —

• Latest technology at an affordable price

• Incredibly easy to operate & flexiblesystem under any condition

• Siemens commitment on making yoursafety our business.

In short, the best value for money

The family 8PU is a system of standard sectionsand switchgear units, suitable for all lowvoltage switchboard applications and designedfor all types of customers throughout theworld. The 8PU System is a product of manyyears of manufacturing experience withswitchgear and a thorough investigation ofcurrent market requirement and practices.

Sheet metal pre-treatment, painting, newassembly techniques and modernmanufacturing methods, including the use ofCNC machines, coupled with our own testingfacility and stringent quality control, ensure ahigh degree of reliability and safety of operatingpersonnel. The wiring systems, new generationsof Siemens switchgear and safety features likefull compartmentalisation, automatic safetyshutters and automatic draw out contactscontribute to the modern concept of low voltage

switchboard.

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Our Product Range

8PUL4.5Power Control CentreCompact, Reliable and User-Friendly

Power Control Centre is considered to be theheart of an electrical system in any industry.Particular demands are therefore made interms of long term reliability and safety. Thisis to say, “supply”, “coupling” and “feeder”functions must be reliably available over longperiod of time. Maintenance and testing mustnot involve long down-times. Siemens 8PUmeets these requirements with 8PUL4.5Power Control Centres.

Compact and reliable

• High degree of safety by virtue of typetested assemblies.

• Test and disconnected position with doorclosed.

• For every rated current range, optimumconnection conditions for cables andbusbars.

• Separate function compartmentsconsisting of a switching device, anauxiliary equipment and a cableconnection compartment.

• High degree of safety for operatingpersonnel by virtue of cable separation onboth sides.

User friendly

Siemens drawout and non drawout circuitbreakers are used for the rated current rangefrom 630 to 6300A. This means:

• Free choice of the supply directionwithout any sacrifices in terms of technicalspecifications.

• High short-time current carrying capacityfor time-graded short-circuit protection(upto 500ms) assures reliable operation ofthe switchboard without being affected bya short-circuit.

• Indication and operation in the doorclosed condition.

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8PUL4.5Technical Data

Rated Insulation 660V , 40-60HzVoltage

Rated operational 415V , 50HzVoltage

Rated Current 630A – 6300A

Short Circuit 50kArms, 1sec and 105kA peakWithstand (Type tested design)

Ambient Standard 40ºCTemperature Optional 45ºC, 50ºC

Degree of Standard IP 42Protection Optional IP 54 upto 1600A

Dimensions Standard W D H560/850/1000x1120x2300 mm

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8PUL4.5Power Control CentreCompact, Reliable and User-Friendly

A unique design

Unique double panel design forthe outgoing feeders in place ofconventional double tier panel.

Independent auxiliary compartment givesoptimum space for mounting auxiliary deviceseven for extensive control and interlockingschemes.

Fewer joints between busbars and air circuitbreakers makes the panel cooler.

Independent accessto power terminalsensures high degreeof safety duringoperation as wellas reduces downtime duringmaintenance.

Also more cabling space ensures easy cabletermination for both the feeders.

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Easy to operate and maintain

Telescopic rail facilitates access formaintenance with ACB in the Panel.

All control accessories accessible fromthe front, hence testing is possiblewith the CB door closed.

Provides safety

We provide automatic safetyshutter on breaker chassis.

All indicators like ACB positionindicator, mechanical counter &“ready to close” condition arevisible with the door closed.

The main busbars& neutral busbarsare enclosed inseparate busbarchambers thuseliminating phaseto neutral faults.

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8PUS1.5Drawout Motor Control CentreErgonomic, Reliable and Versatile

Whether in power plants, industrial installationsor office complexes, an adequate amount ofenergy must be available at the necessarylocation and at all times. However, requirementsfrequently change. For example, motor powerratings change or new loads have to beconnected.

Siemens’ 8PU drawout design offers theunmatched degree of power supply flexibility.What’s more, it was conceived on the basis ofergonomic criteria. Easy handling and shortconversion times assure high availability of thesystem.

8PUS1.5 drawout design offersversatility and reliability withadaptation to changing requirements• Drawout modules of the same sizes are

interchangeable, irrespective of equipmentmounted.

• Neither any shutdown nor any cutting ordrilling required for changing or addingfeeders disposition at site.

• Direct alignment with Power control Centre(8PUL4.5) to form PMCC’s.

8PUS1.5 – a safe and user friendlydesign• High degree of safety by virtue of type tested

assemblies.• Standard operating method for all sizes of

drawout units.• All parts are inside the contours of the

drawout units and are therefore protectedagainst damage.

• Hinged instrument plate for easy access toequipment.

• High packing density (upto 11 feeders of160mm height per cubicle)

• Positive earthing of each of the drawoutmodule as well as panel doors.

• Power terminals location at rear give largespace for cable run & also ensures safeworking in cable alley.

• Feeder compartment door and cable alleydoor opens in opposite direction for ampleworking space.

• All equipment are accessible from front.• All feeders are fully compartmentalised.

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8PUS1.5Technical Data

Rated Insulation 660V, 40-60HzVoltage

Rated operational 415V, 50HzVoltage

Rated Current Main Horizontal Busbars : 630A – 3200AVertical Busbars : 630A

Short Circuit 50kArms, 1sec and 105kA peakWithstand (Type tested design)

Ambient Standard 40ºCTemperature Optional 45ºC, 50ºC

Degree of Standard IP 52Protection Optional IP 54

Dimensions Standard W D HSingle front 850 x 560 x 2300mmwith Top/bottomcable entryDouble front 850 x 800 x 2300mmwith top/bottomcable entry

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8PUS1.5Drawout Motor Control CentreErgonomic, Reliable and Versatile

Cable alley of internal width of 270mm facilitatesease in cable termination & maintenance.

Trolley width of more than 500 mm ensures betterequipment dispersion as well as safe & easyequipment replacement and maintenance.

Self aligning and self-disconnecting main &auxiliary contacts.

Vertical busbars with a multi layer plating onAluminium called ‘Alstan’ which ensures reliableelectrical contact, resistance to abrasion andbetter electrical properties.

Unique swivel lever arrangement which ensuresfaster positive movement and engagement ofmodule inside the compartment.

Main busbars and control busbars totallysegregated from each other. Upto 11 numbercontrol bus per panel can be offered whichensure that solid links are used instead ofwires thus leading to reduction in inter-panelcabling.

Easy to operate and maintainOnly 8PUS1.5 has..

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Totally enclosed main & vertical busbarcompartment.

Power terminals for lower rating being at therear, makes them unapproachable withouttaking out the trolley as well as ensuresmaximum area for cable routing in cable alley.

Gravity operated shutters ensures positiveisolation of module compartment withvertical busbars after the trolley is drawn out.

Finger touch proof controlgear& auxiliary contacts.

Door interlocks & padlockingfacility

The Switch fuse unit upto 125Acomes with built in lyra contactswith solid connections betweenthe switch, lyra contact andvertical busbars.

Provides safety

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8PUF4.5Non Drawout Motor Control CentreEconomical, Reliable and Flexible

In certain applications, either there is no need toreplace components under operating conditionsor short idle times are acceptable. In such cases,Siemens 8PUF4.5 non drawout design offersexcellent economy, reliability and variability.

8PUF4.5 non drawout design offerseconomical yet reliable system

• High degree of safety by virtue of type-testedassemblies.

• Any combination of modular function units.

• Easy replacement of functional units afterde-energising the switchboard.

• Direct alignment with 8PUL4.5 or 8PUS1.5.

8PUF4.5 : more than a non drawoutpanel

• The modular functional units enable efficientinstallation and maintenance.

• Main busbars, vertical busbars as well ascable chambers are accessible even in doublefront panels.

• Internal separation between each functionalunits.

• Fully shrouded power cable terminationsensures shock hazard protection.

• All terminals are visible and can be testedfrom front.

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8PUF4.5Technical Data

Rated Insulation 660V, 40-60HzVoltage

Rated operational 415V, 50HzVoltage

Rated Current Main Horizontal Busbars : 630A – 3200AVertical Busbars : upto 1400A

Short Circuit 50kArms,1sec and 105kA peakWithstand (Type tested design)

Ambient Standard 40ºCTemperature Optional 45ºC, 50ºC

Degree of Standard IP 52Protection Optional IP 54

Dimensions Standard W D H1-panel 980 x 560 x 2300mmSingle/doublefront unit withtop/bottomcable entry2-panel 1760 x 560 x 2300mmSingle/doublefront unit withtop/bottomcable entry

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8PUF4.5Non Drawout Motor Control CentreEconomical, Reliable and Flexible

Vertical busbars are placed one behind the otherwith the access to the last vertical busbaravailable from front in case of single front panels& from both sides in case of double front panels.

Module width of 500 mm ensures betterequipment dispersion as well as safe & easyequipment replacement.

Wider Cable alley makes cable termination easy.

Door interlocks & padlocking facility.

Totally shrouded Power terminals.

Main busbars and control busbars aretotally segregated from each other. Upto11 number control bus per panel can beoffered which ensure that solid links areused instead of wires thus leading toreduction in inter-panel cabling.

Easy to operate and maintain Provides safety

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Non CompartmentalisedDistribution BoardsCompact, Economical & Safe

Non compartmentalised distribution boards are newentrants in the Siemens Low Voltage Switchboards productrange. They are designed for the various industrialapplications as well as for the high rise buildings. Thesedistribution boards can be used for distribution of electricalpower for lighting and other resistive loads.

Compact, Flexible yet safe

• The incoming switching device (MCCB/SFU) is providedin a separate compartment.

• State of the art Siemens Switchgear (SFU / MCCB / MCBs)are used.

• All the outgoing MCBs are DIN rail mounted withadequate spacing between them.

• Metering devices can also be provided on the panel door.

• The height ranges from 500mm to 2000mm.

• Double door design are provided for extra safety.

• Wall mounted design upto 1500mm height and floormounted design for 1550mm and 2000mm heightdistribution boards are available.

• There is a flexibility for Top as well as Bottom Cableentry.

Floor mounting Distributionboard for the industrialapplications.

Wall mountingDistribution board for thehigh rise buildings.

Technical Data

Rated Insulation Voltage 660V, 50Hz

Rated Operational Voltage 415V, 50Hz

Rated Current IncomingSwitch/MCCB- 250A-400AOutgoing MCBs : upto 63A

Short circuit Strength 10kA

Degree of Protection IP 52

Dimensions W D H500 x 300 x 500mm – Wall Mounting

500 x 300 x 1000mm – Wall Mounting

500 x 300 x 1500mm – Wall Mounting

500 x 300 x 1550mm – Floor Mounting

600 x 500 x 2000mm – Floor Mounting

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Low Voltage BusductCompact, Economical, and Safe

In any electrical system of an industry thebusduct is an important link to feed theincoming supply from transformer to the mainPower Control Centre. Siemens Low VoltageBusduct is type tested, light weight and verycompact. The bolted design ensures highdegree reliability and flexibility duringinstallation and maintenance.

Compact, Flexible yet safe

• High degree of safety by virtue of typetested assembly.

• Designed to match the connections of anymake Low Voltage transformers and anymake PCC panels.

• Compact size and light inweight ensures easyhandling duringinstallation.

• Bolted design makes thebusduct flexible and easyfor maintenance.

• Suitable for both indoorand outdoor applications.

• Positive earthing ofbusduct by earth busbarsrunning throughout thelength. Technical Data

Rated Insulation Voltage 660V, 40-60Hz

Rated Operational Voltage 415V, 50Hz

Rated Current upto 4000A

Short Circuit strength 50kA 1 sec.

Degree of Protection IP 54

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8PU - Tested as per latestquality norms

Siemens 8PU is a type tested switchboardwhose physical characteristics weredesigned in the test laboratory both fornormal operating conditions as well as forfault situations. These type tests,conducted in an independent testlaboratory/Inhouse, assures maximumreliability and safety. A few of the majortype tests carried out are:

• Verification of temperature rise limits.

• Verification of impulse voltage.

• Verification of the short circuitwithstand.

• Verification of degree of protection.

Every Siemens 8PU switchboard assemblyundergoes routine testing before deliverywhich are :

• Inspection of the assembly includinginspection of wiring and electricaloperation test.

• Dielectric Test.

• Checking of protective measures andof the electrical continuity of theprotective circuits.

• Verification of mechanical operation.

Siemens 8PU adheres to the moststringent quality norms with a strictemphasis on the quality of materials andequipments that comprise the endproduct. Some of the salient features are:

• Conformances of our qualitymanagement system to ISO 9001.

• Conformances of our manufacturingfacility to ISO 14001.

• Computer assisted project planning atall stages of product manufacturing.

• Use of exclusive, high grade insulatingmaterial and reliable “Siemens” makeSwitchgear/Controlgear.

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Product upgradation is a continuous process. Hence, data in this catalog is subject to change

without prior notice. For the latest information, please get in touch with our Sales Offices.

Siemens Ltd.

Industry SectorSwitchboards and BuswaysThane Belapur Road

Thane - 400 601Fax: +91 22 27623725

Siemens Ltd.

A&D-03-151-013

This replaces A&D-03-151-001

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