Components for Infrastructure - Microelettrica

1 Components for InfrastructureRectifiersDC High Speed Circuit BreakersContactorsResistorsProtection RelaysTransducersFans2 Energy Microelettrica Scientifica s extensive product ranges have become the standard of reference for a growing number of customers worldwide in the challenging Energy Market. Microelettrica Scientifica s been evolving through innovation to support new technology in generation, renewable energy and smart interface relayFeeder and bus relayResistor for harmonic filtersGenerator relayNeutral grounding resistorsDC contactors for inverters and UPSsLoad banksPhotovoltaic string contactorsGround fault neutralizer systemIndustry During almost 30 years of operation, a close relationship with the Customers has been created.

2 Microelettrica products are present in most of the industries such as Steel making, Cement, Glass, Chemical, Oil&Gas and Utilities. ApplicationsMotor and generator protectionFeeder and bus bar relayResistor for harmonic filtersGenerator relayNeutral grounding resistorsDC contactors for inverters and UPSs Load banksPhotovoltaic string contactorsGround fault neutralizer systemProductsContactorsDisconnectors DC High Speed Circuit BreakersPower ResistorProtection RelaysFans TransducersRectifiersComponents for Infrastructures3 RailwaysToday, Microelettrica Scientifica is a leading supplier of equipment for dc traction substations. We offer to our Customers a complete portfolio of DC Traction System Switchgears and Switching CubiclesDC High Speed Circuit BreakersFeeder manager and DC Relays for TractionApplicationsDC Power SubstationsTraction lines DepotDC SwitchgearsDC TransducersContactors and DisconnectorsPower Resistor for Line TestingBraking Resistors for Fixed InstallationRectifiersFansUnderground ventilationProductsContactorsDisconnecto rsDC High Speed Circuit BreakersBraking ResistorsResistors for Traction ControlHigh Voltage TransducersFansMade in Microelettrica ScientificaAlways aiming for the best results.

3 Microelettrica Scientifica develops and manufactures the entire range of products in Buccinasco close to Milan. We also run operations in , South Africa, China, India, France, Brasil and Turkey through which our Customers have access to immediate local assistance and the possibility of localization of Microelettrica Scientifica products. Our Customers know they can always count on quality, excellence and accuracy of Microelettrica Scientifica Products and for InfrastructureRecti erNegative overvoltageprotectionBar DIN ContactorHall e ect transducerV-I TransducerDC ProIR 3000 FeederIR 4000 VVDisconnectorTransformerBraking ResistorFeeder Trolley -Clad4A tailored solution for every substation component needRecti erNegative overvoltageprotectionBar DIN ContactorHall e ect transducerV-I TransducerDC ProIR 3000 FeederIR 4000 VVDisconnectorTransformerBraking ResistorFeeder Trolley -Clad5A tailored solution for every substation component needComponents for InfrastructureDC Hall E ectTransducerBreakerIR 4000 VVBar DIN ContactorRecti erAC

4 ProtectionRelayInverter DC ContactorInterface ProtectionInterface ProtectionContactorAC Low FrequencyContactorG BaseNeutral Grounding Resistor Filter ResistorDisconnectorDisconnectorBar DIN Contactor6A tailored solution for every industry component needDC Hall E ectTransducerBreakerIR 4000 VVBar DIN ContactorRecti erAC ProtectionRelayInverter DC ContactorInterface ProtectionInterface ProtectionContactorAC Low FrequencyContactorG BaseNeutral Grounding Resistor Filter ResistorDisconnectorDisconnectorBar DIN Contactor7A tailored solution for every industry component needComponents for InfrastructureComponents for Infrastructures8 Traction RectifierFunctionsTraction Rectifiers are used to convert AC power to DC power for railway traction applications using silicon diodes and aluminium Rectifier General characteristicsTraction Rectifiers could be convection cooled or forced-air cooled (using blowers), and are usually installed:-In modular, metalclad enclosures-As a self-contained, open-frame unit in a secured (inter-locked) areaSemiconductor Solutions, an ISO 9001.

5 2008 company based in South Africa, designs and manufactures customised rectifiers in accordance with SANS60146 (IEC146), EN50328 standards and customer requirements, where constructive and technological principles are applied in a project specific mechanical to high demand for maintainability from our customer, our designs apply specific focus on these elements, for example:-Easy maintenance, with direct accessibility to the diode modules due to open-frame construction-Easy component replacement due to modular design and removal of individual power modules in less than 5 minutes(Only approved supplier in South Africa on all kV DC rail systems)Transnet Freight Rail/PRASAT ransnet Freight Rail/PRASAT ransnet Freight Rail/PRASAT ransnet Freight Rail/PRASAR eferencesRectifier, Diode ( , Forced-air cooled) [x120]Rectifier, Diode (5MW, Forced-air cooled) [x159]Rectifier, Diode (6MW, Forced-air cooled) [x10]Rectifier, Diode (10MW, Forced-air cooled)

6 [x10]ConstructionCooling typeMain CharacteristicsOpen-frame / Metal-clad enclosureNatural convection / forced-air cooledComponents for Infrastructures9 Components for InfrastructureDiode monitoringFan controlFan protectionMaintenance & repairConnectionFeaturesFailed diode LED identification & signal output via potential-free contactFan controller card can be used to stop/start the fan/s via thermo-switchesVane switch on each fan signals fan failure/stoppageQuick & easy diode module change-outMany different rectifier connections/configurations possibleRated power [MW]Rated DC output voltage [Vdc]Rated AC input voltage [Vac]Rated frequency [Hz]Duty classRectifier ConnectionsNo.

7 Of pulsesSemiconductor typeRedundancyProtection degreeAmbient temperature [ C]Over-temperature protectionDiode fuse protectionFailed diode monitoringDC surge protectionMeteringTechnical Characteristics1 - 10750, 1500, 3000555 - 240050 / 60To customer specificationSeries & parallel bridges6 & 12-pulseCapsule diode (hockey-puck)N-1 (Customer to specify)IPxx (Customer to specify)-5 / +50 Included (Fibre-optically connected)OptionalOptional (Fibre-optically connected)Optional (Fuse protected)Optional (Voltmeter & Ammeter) Components for InfrastructuresFunctionsIndustrial Rectifiers are used to convert AC power to DC power for many different applications and utilise silicon diodes for uncontrolled applications and thyristors for Rectifier General characteristicsIndustrial Rectifiers could be convection cooled, forced-air cooled (using blowers), or water-cooled in conjunction with a cooling tower and are usually installed-In modular, metalclad enclosures to customer specified protection rating (IPxx)-As a self-contained, open-frame unit in a secured (inter-locked) areaTypical Applications:Applications involved with to date include but are not limited to.

8 - electro-winning- arc-furnace control- haulage truck assist- winder/elevator armature & field converters- electro-plating- soft starters- heater control Solutions, an ISO 9001:2008 company based in South Africa, have built up extensive experience in the design and manufacture of customised rectifiers, in accordance with SANS60146 (IEC146) standards and customer requirements, for industry ( mining operations & plating plants) in the last two decades.(Extensive experience and know-how in forced-air and water-cooled, controlled, high current rating per mechanical volume systems)Industrial diamond manufacturingHaul-truck propulsion (on-board & fixed)DC Arc-furnace supplyHoist system DC driveElectro-plating plantsReferencesRectifier, Thyristor (100V, 40kA, Water-cooled)Rectifier, Diode ( , , Forced-air cooled)Rectifier, Thyristor (900V, 76kA, Water-cooled)Rectifier, Thyristor (690V, 2kA, Forced-air cooled)Rectifier, Thyristor (760V, 40kA, Water-cooled)

9 ConstructionCooling typeMain CharacteristicsOpen-frame / Metal-clad enclosure Natural convection, forced-air & water-cooled10 Industrial RectifierComponents for Infrastructures11 Components for InfrastructureRated current [kA]Rated DC output voltage [Vdc]Rated AC input voltage [Vac]Rated frequency [Hz]HeatsinkDuty classRectifier ConnectionsNo. of pulsesSemiconductor typeRedundancyProtection degreeAmbient temperature [ C]RC snubberOver-temperature protectionDiode fuse protection Failed diode monitoringDC surge protectionMeteringTechnical CharacteristicsUp to 750 - 30000 - 240050 / 60 Aluminium (air-cooled) / copper (water-cooled)To customer specificationSeries & parallel bridges, hexa-phase6 & 12-pulseCapsule diode or thyristor (hockey-puck)N-1 (Customer to specify)IPxx (Customer to specify)-5 / +50 Normally includedIncluded (Fibre-optically connected)OptionalOptional (Fibre-optically connected)Optional (Fuse protected)Optional (Voltmeter & Ammeter)Diode monitoring (optional)

10 Failed diode LED identification & signal output via potential-free contactMaintenance & repair Quick & easy diode module change-outConnection Many different rectifier connections/configurations possibleFeatures12DC High Speed Circuit BreakersIR3000F lineThe IR3000F series are single pole, magnetic blow out, trip free, air circuit breakers. The closing mechanism is an independent motor operated IR3000 Circuit Breaker is held closed by holding coil or by permanent magnet device and is equipped with a direct acting over-current trip device which may be either unidirectional and arc chute is made in ceramic material for a longer life and reduced use of arching contacts ensure a long duration in electrical breaker conforms to IEC61992; IEEE C37-14.