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Medium Voltage Switchgearsand Motor Control Centers

MTW

Motors | Automation | Energy | Transmission & Distribution | Coatings

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Medium Voltage Switchgears and Motor Control Centers2

The WEG Medium Voltage (MV) Switchgears and Motor Control Centers are factory assembled and tested for 2.3 kV to 36 kV voltages and were developed to meet the requirements for internationalIEC 62271-200 standard, while preserving its easy assembly and maintenance practices, such as flexibility in adapting to the different characteristics demanded by the market.

Applications Advantages

USP

WEG Medium Voltage (MV) Switchgears and Motor Control Centers

J Various alternatives for shielding the MV compartments to meet customer needs and demands

J Fast circuit breaker and contactor replacement, due to slide interchangeability

J Minimum maintenance J Fast and easy expansion due to its modular construction J Fast factory assembly J Simple and safe operations J Easy access to compartments for maintenance through removable doors and covers

J Transport truck for circuit breaker/contactor (optional) J Interlocking system to protect against incorrect operation

The MV Switchgears have a wide range of applicationsin MTV systems, the main ones being:

J Utility substation J Main factory and industrial facility protection and sectioning J Pumping stations J Railway systems J Power generation thermal and hydroelectric plants J Medium voltage motor start J Unitary substations J Power distribution systems J Interconnection boards J Fixed and variable capacitor banks

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Medium Voltage Switchgears and Motor Control Centers 3

Medium Voltage Switchgears are manufactured in bent steel plate profiles and enclosed on all sides by steel plate.

J The steel plates undergo an alkaline degreasing treatment, phosphatization and powdered painting J Overpressure relief devices in the top provide pressure relief in the case of internal arc J Metal divisions separate the compartments from each other for the shielded type J The general bus consists of one or more rectangular bars, in electrolytic copper with tin plated fittings and dimensioned in such a way to resist thermal and dynamic efforts

J When the bus compartment is independent for each cubicle the separation is effected by fastening and passage insulation through-plugs

J The low voltage compartment is located in the upper front part. This compartment houses the measuring instruments, protection relay, terminals, thermostats, contacts, etc., and is completely isolated from the medium voltage through a steel plate, and is fitted with its own closing door

Construction Characteristics

Technical Characteristics

Electrical

Voltage classes 7.2 - 17.5 - 24 - 36 kV

Rated currents 630 - 1,250 - 1,600 - 2,000 - 2,500 - 3,150 - 4,000 A

Interrupting current 25 - 31.5 - 40 - 50 kA / 1s

Basic impulse level (BIL) 60 - 95 - 125 - 170 kV

Mechanical

Continuity service loss LSC1 to LSC2B-PM

Protection degree IP 4X (other protection degrees under request)

Finishing painting Light gray Munsell N 6.5 or RAL 7032 (others under request)

Sheet gaugesStructure: 3.0 mm

Covers: 3.0 mm

Internal pressure relief Flaps for each compartment

Switching devices

Vacuum circuit breaker mounted on removable slide

Vacuum contactor

Earthing switch (optional)

Disconnect switch and fuses

Measuring equipmentFixed CTs

Fixed or extractable VTs

Protection equipment Microprocessed multi function protection relays

Environment

Altitude Up to 1,000 m (greater altitudes under request)

Maximum temperature 40 °C

Proximity to the sea We comply with Petrobras N-1735 standard, conditions 3 and 4

Marine platform We comply with Petrobras N-1374 standard

Weatherproof / outdoor use Under request

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Medium Voltage Switchgear Model MTW

J Continuity service loss: LSC2B-PM J Internal arc resistant J High level of safety for the operator J Reduced dimensions, requiring smaller sized electrical room J Circuit breaker displacement from test to inserted position and vice-versa, equipped with closed circuit breaker compartment door

J Optional earthing switch J Standardized structures, components and dimensions J Circuit breaker mechanical control with closed door J Cable access through front section

The MTW is arc resistant, and thus, complies with themost demanding international standards, guaranteeing its safe operation. There are also various interlocks between the circuit breaker compartment door and the circuit breaker extractable slide. The particular circuit breaker used eliminates the need for maintenance and can be placed in the removalposition without having to open the cubicle door.

1 - Low voltage compartment2 - Circuit breaker compartment3 - Cable front access compartment or widrawable PTs4 - Cable and CTs compartment5 - Busbar compartment

Specific Characteristics Safety

Circuit breakerposition

Interlocks

Inserted / service

It is impossible to move the circuit breaker when it is switched on

It is impossible to turn off the earthing switch

It is impossible to open the circuit breakercompartment door

Between theinserted and

test/extractedposition

It is impossible to open the circuit breakercompartment door

It is impossible to switch on the circuit breaker

It is impossible to turn off the earthing switch

It is impossible to disconnect the plug from the circuitbreaker control

Test / extracted

It is impossible to move the circuit breaker if it isswitched on

It is impossible to move the circuit breaker if theearthing switch is off

It is impossible to close the circuit breakercompartment door without connecting the circuitbreaker control plug

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Medium Voltage Switchgears and Motor Control Centers 5

Standardized Configurations

Note: other configurations (disconnect switch, fuse switches, etc) on request.

The MTW switchgears are equipped with extractable racks in which several equipments may be assembled, such as: disconnect switch with rectangular copper bars, voltage transformers, HH fuse, lightning conductors and other devices.

“INSERTED” position “EXT-TEST” position “EXTRACTED” positionWithdrawable circuit breaker.

CTs, fixed VTs and earthing switch

Cubicle with VTs and extractable

fuses

Withdrawable circuit breaker.

CTs and earthing switch

* *

Bus duct, enabling greater safetyin case of an electrical arc.

Automatic flaps protect against touchwhile circuit breaker is extracted.

The circuit breaker is extracted orinserted with the compartment door closed.

Technical Characteristics

Electrical

Maximum operating voltage kV 7.2 17.5 24 36

Rated withstand voltage - 60 Hz - 1 min. kV 20 34 50 70

Atmospheric impulse rated withstand voltage kV 60 95 125 170

Symmetrical interruption rated current kA 25 - 31.5 - 40 - 50 25 25 - 31.5

Short time withstand current (1s) kA 25 - 31.5 - 40 - 50 25 25 - 31.5

Rated peak withstand current kA 63 - 79 - 100 - 125 63 63 - 79

Main bus rated current A 630 / 800 / 1,250 / 2,500 / 3,150 / 4,000

Mechanical

Width mm 650 (630 e 1,250 A) / 750 (2,500 A) / 1,000 (3,150 e 4,000 A) 800 1,200

Height mm 2,500 2,500 2,500 2,750

Depth mm 1,680 / 2,000 1,680 / 2,000 2,000 2,600

Classification according to IEC 62271-200

Loss of service continuity category

LSC 2B Safe access to compartment that will be opened, existing bus bars and other energized units

Separation between live parts

PM Metallic partitions and shutters between live parts and open compartment

Electric arc resistance

IAC BF ALR (MTW-03) Enables general master access through front part

IAC AFLR (MTW-04) Enables authorized access through the sides and rear

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Medium Voltage Switchgears and Motor Control Centers6

Medium Voltage Motor Control Center model CCM-MT

The WEG Medium Voltage Motor Control Center are designed for switching and controlling medium voltage motorsand are assembled and tested in the factory until 12 kV in accordance with NBR IEC 62271-200 standard.Classification according to IEC 62271-200; IAC AF and LSC2A-PM.

General DescriptionThe CCM-MT consists of shielded metal cubicles, air insulated for voltages up to 12 kV and are composed of vacuum withdrawable contactors and HH type fuses.The buses may be simple or double. Two contactors canbe assembled per column.

Personnel Safety, Operation and Maintenance J Mechanical and electrical interlock J Full protection of live parts J Fully interlocked contactor slide J Arc resistant metal enclosure

Contactor RackThe vacuum contactor, HH fuses and control transformers(if requested) are installed in the withdrawable rack. This rack is fully interlocked with the structure and is moved manually from the “INSERTED” to the “TEST / EXTRACTED” positions.

Auxiliary Control EquipmentThese cubicles foresee completely separate low voltage and medium voltage compartments, for the installation of measuring instruments, thermal overload relays, terminals, thermostats, auxiliary contactors, etc., fitted with rapid closing door.

Interlocks J The rack cannot be moved with the contactor in the “ON” position

J The contactor cannot be operated when it is between the “INSERTED” and “TEST / EXTRACTED” positions

J The contactor automatically switches off in the case of a open fuse

Technical Characteristics

Note: other voltages available on request.

Electrical

Maximum operating voltage kV 7.2 12

Rated withstand voltage - 60 Hz - 1 min. kV 20 28

Atmospheric impulse rated withstand voltage kV 60 75

Symmetrical interruption rated current kA 60 75

Short time withstand current (1s) kA 25 - 31.5 - 40 - 50

Rated peak withstand current (crest) kA 63 - 79 - 100 - 125

Main bus rated current A 79 to 2,500

Mechanical

Width mm 650 900

Height mm 2,300 2,500

Depth mm 1,680 2,500

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Medium Voltage Switchgears and Motor Control Centers 7

Power Generation Systems

WEG offers products able to meet the requirements forpower generation applications. Our products are robustand provide specific technological solutions for applications in small and medium power plants.

Brief list of some of our products: J Surge cubicle J Utility interconnection switchgear J Utility measuring cubicles J Supply cubicles (up to two circuit breakers per column) J Neutral closing cubicle J Protection and excitation panel J Control table J Earthing resistor J 24 V dc or 125 V dc battery bank (other voltages on request) J Distribution panels

SwitchgearsIn line with the MV Switchgears models, WEG switchgears for power generation systems were developed to comply with the NBR IEC 62271-200 standard. Being of robust concept its mechanical structure is submitted to special treatment for use in aggressive environments typical of Ethanol & Sugar and Oil & Gas applications.

Protection, Measurement and Control CabinetThese panels are equipped with microprocessed multifunctional relays, multifunction instruments, synchronization columns with analogical instruments(optional), switches and pushbuttons for generator /power generation system control.

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WEG Worldwide Operations

WEG Group - Automation Business Unit Jaraguá do Sul - SC - Brazil Phone: +55 47 3276 4000 automacao@weg.net www.weg.net

For those countries where there is not a WEG own operation, find our local distributor at www.weg.net.

ARGENTINAWEG EQUIPAMIENTOS ELECTRICOS San Francisco - CordobaPhone: +54 3564 421 484info-ar@weg.netwww.weg.net/ar

WEG PINTURAS - PulverluxBuenos AiresPhone: +54 11 4299 8000tintas@weg.net

AUSTRALIAWEG AUSTRALIAVictoria Phone: +61 3 9765 4600info-au@weg.netwww.weg.net/au

AUSTRIAWATT DRIVE - WEG GroupMarkt Piesting - ViennaPhone: +43 2633 404 0watt@wattdrive.comwww.wattdrive.com

BELGIUMWEG BENELUXNivelles - BelgiumPhone: +32 67 88 84 20info-be@weg.netwww.weg.net/be

BRAZILWEG EQUIPAMENTOS ELÉTRICOSJaraguá do Sul - Santa CatarinaPhone: +55 47 3276-4002info-br@weg.netwww.weg.net/br

CHILEWEG CHILESantiagoPhone: +56 2 784 8900info-cl@weg.netwww.weg.net/cl

CHINAWEG NANTONGNantong - Jiangsu Phone: +86 0513 8598 9333info-cn@weg.netwww.weg.net/cn

COLOMBIAWEG COLOMBIABogotáPhone: +57 1 416 0166info-co@weg.netwww.weg.net/co

FRANCEWEG FRANCESaint Quentin Fallavier - LyonPhone: +33 4 74 99 11 35info-fr@weg.netwww.weg.net/fr

GERMANYWEG GERMANY Kerpen - North Rhine Westphalia Phone: +49 2237 9291 0info-de@weg.netwww.weg.net/de

GHANAZEST ELECTRIC GHANA WEG GroupAccraPhone: +233 30 27 664 90info@zestghana.com.ghwww.zestghana.com.gh

INDIAWEG ELECTRIC INDIABangalore - KarnatakaPhone: +91 80 4128 2007 info-in@weg.netwww.weg.net/in

WEG INDUSTRIES INDIAHosur - Tamil NaduPhone: +91 4344 301 501info-in@weg.netwww.weg.net/in

ITALYWEG ITALIACinisello Balsamo - MilanoPhone: +39 02 6129 3535info-it@weg.netwww.weg.net/it

JAPANWEG ELECTRIC MOTORSJAPANYokohama City - KanagawaPhone: +81 45 550 3030info-jp@weg.netwww.weg.net/jp

MALAYSIAWATT EURO-DRIVE - WEG GroupShah Alam, SelangorPhone: 603 78591626info@wattdrive.com.mywww.wattdrive.com

MEXICOWEG MEXICOHuehuetoca Phone: +52 55 5321 4231info-mx@weg.netwww.weg.net/mx

VOLTRAN - WEG GroupTizayuca - HidalgoPhone: +52 77 5350 9354www.voltran.com.mx

NETHERLANDSWEG NETHERLANDS Oldenzaal - OverijsselPhone: +31 541 571 080info-nl@weg.netwww.weg.net/nl

PERUWEG PERULimaPhone: +51 1 472 3204info-pe@weg.netwww.weg.net/pe

PORTUGALWEG EUROMaia - PortoPhone: +351 22 9477705info-pt@weg.netwww.weg.net/pt

RUSSIA and CISWEG ELECTRIC CIS Saint Petersburg Phone: +7 812 363 2172 info-ru@weg.net www.weg.net/ru

SOUTH AFRICAZEST ELECTRIC MOTORSWEG Group JohannesburgPhone: +27 11 723 6000info@zest.co.zawww.zest.co.za

SPAINWEG IBERIAMadridPhone: +34 91 655 30 08info-es@weg.netwww.weg.net/es

SINGAPOREWEG SINGAPORE SingaporePhone: +65 68589081info-sg@weg.netwww.weg.net/sg

SCANDINAVIAWEG SCANDINAVIAKungsbacka - SwedenPhone: +46 300 73 400info-se@weg.netwww.weg.net/se

UKWEG ELECTRIC MOTORS U.K.Redditch - WorcestershirePhone: +44 1527 513 800info-uk@weg.netwww.weg.net/uk

UNITED ARAB EMIRATESWEG MIDDLE EAST DubaiPhone: +971 4 813 0800info-ae@weg.netwww.weg.net/ae

USAWEG ELECTRIC Duluth - GeorgiaPhone: +1 678 249 2000info-us@weg.net www.weg.net/us

ELECTRIC MACHINERYWEG GroupMinneapolis - MinnesotaPhone: +1 612 378 8000www.electricmachinery.com

VENEZUELAWEG INDUSTRIAS VENEZUELAValencia - CaraboboPhone: +58 241 821 0582info-ve@weg.netwww.weg.net/ve