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Transformers

Transformers
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Transformers

Product catalog summary
Company Overview
Italweber Elettra, founded in 1993, is a prominent Italian producer of low voltage transformers, emphasizing customer-centric strategies, modern facilities, and advanced equipment for reliability and prompt delivery.
Product Range
The company offers a wide range of products, including standard and custom transformers, autotransformers, and inductors, tailored to specific customer needs.
Quality Assurance
Italweber Elettra is committed to quality, demonstrated by its CSQ certification under UNI EN ISO 9001:2008, ensuring adherence to international standards and customer satisfaction.
Product Specifications
  • Single Phase Transformers: Control, safety, and insulating transformers with various classes and approvals.
  • Three Phase Transformers: For control and photovoltaic applications, available with or without protective boxes.
  • Autotransformers: Single and three-phase options, with approved and boxed versions.
  • Reactors: Single and three-phase reactors, including starting motor reactors.
  • Toroidal Transformers: Single-phase safety toroidal transformers with approvals.
Technical Features
Includes detailed specifications such as power ratings, dimensions, and fixing details. Standard three-phase connections are star-configured.
Standards and Approvals
Products comply with standards like EN 61558-2-2 and CEI 96/7, ensuring protection against direct and indirect contact, with continuous service and IP00 protection rating.
Technical Specifications
- Maximum Ambient Temperature: +40°C
- Thermal Class: F - 155°C
- Frequency: 50/60 Hz
- Input/Output Voltage: 0 to 1000 V
- Rated Output Power: 30 - 25000 VA
- Standards: EN 61558-2-2; CEI 96/7
- Protection Against Electric Shock: Class 1
- Operating Time: Continuous
- Protection Degree: IP 00
- Terminals Protection Degree: IP 20
Dimensional Features
Detailed tables list various transformer models with power ratings, dimensions, fixing dimensions, and weight.
Single Phase Safety Transformers (Class B)
- For circuits with very low voltage below 50 volts.
- Accidental contact with secondary phases is not dangerous.
- Standards: EN 61558-2-6; CEI 96/7
- Input Voltage: 0 - 230 - 400 Vac
- Output Voltage: 12 - 0 - 12 Vac
- Rated Output Power: 25 - 10000 VA
Single Phase Insulating Transformers (Class B)
- Windings electrically separated by double insulation.
- Standards: EN 61558-2-4; CEI 96/7
- Input Voltage: 0 - 230 - 400 Vac
- Output Voltage: 55 - 0 - 55 Vac
- Rated Output Power: 25 - 10000 VA
Overview
Technical specifications and dimensional data for single-phase insulating and safety transformers, class F, designed for general use with electrical isolation through double-layer insulation.
Specifications
- Standards: EN 61558-2-4; CEI 96/7
- Protection Class: Class 1
- Operating Time: Continuous
- Protection Degree: IP 00 (general), IP 20 (terminals)
- Max Ambient Temperature: +40°C
- Thermal Class: F - 155°C
- Frequency: 50/60 Hz
- Input Voltage: 0 - 230 - 400 Vac
- Output Voltage: 55 - 0 - 55 Vac or 115 - 0 - 115 Vac
- Rated Output Power: 30 - 10000 VA
Dimensional Features
Tables provide essential data for selecting appropriate transformers based on specific requirements.
Key Points
- Designed to prevent contact with live parts in case of insulation failure.
- Suitable for circuits requiring electrical isolation.
- Multiple input connections offer versatility.
Recommendations
Use transformers within specified temperature and power limits for safety and performance. Regular maintenance and inspection are advised.
Overview
Technical specifications and data for single-phase safety and isolating transformers with IP20 protection, designed for circuits requiring electrical isolation with double insulation.
Specifications
  • Standards: EN61558-1; EN61558-2-6
  • Protection Class: Class 2
  • Operating Time: Continuous
  • Protection Degree: IP 20
  • Max Ambient Temperature: +40°C
  • Thermal Class: B - 130°C
  • Frequency: 50/60 Hz
  • Fixing Type: DIN rail
Electrical Characteristics
  • Input Voltage: +/-15V 0 - 230 - 400 Vac
  • Output Voltage Options: 0 - 12 - 0 - 12 Vac, 0 - 24 - 0 - 24 Vac, 0 - 55 - 0 - 55 Vac, 0 - 115 - 0 - 115 Vac, 0 - 110 Vac, 0 - 230 Vac
  • Rated Output Power: 30 - 300 Va
Dimensional Features
Tables list dimensions and weights of various transformer models.
Model Variants
Multiple model codes with corresponding power ratings and output voltages indicate versatility and range of applications.
Specifications
Outlines specifications for transformers, including protection degrees of IP 21 and IP 44, with standard color RAL 7035 and epoxy powder varnish. Iron thickness is 2 mm. Complies with EN 61558 standards and offers Class 1 protection against electric shock.
Standard Equipment for IP 44
Includes air filters, lifting rings, earth fixing bars, and aluminum plate for cable entry and exit. Fans for forced cooling available upon request.
Technical Data
Transformers operate at 400V input/output voltage with 50 Hz frequency, impregnated for natural air cooling, continuous operating time, and 40°C max ambient temperature. Isolation level is 3KV for 60 seconds. Primary and secondary winding connections are Star +N, with vectorial group Ynyno and aluminum windings.
Dimensional Features
Detailed dimensions and weights for transformer models, ranging from 30 kVA to 400 kVA.
Transformer Series
FTV series transformers for photovoltaic plants offer very low loss and efficiency over 97%. Details on dimensions and weights for three-phase power and control transformers, suitable for circuits requiring simple insulation.
Protection Boxes
Metal boxes for transformer protection available with IP 21 and IP 44 protection degrees, suitable for indoor use. IP 44 version is reinforced and equipped with ventilation filters or fans for forced cooling.
Additional Information
Technical data for single-phase autotransformers, suitable for circuits where galvanic separation is not required. Available in various power ratings, from 100 kVA to 20,000 kVA, with specific dimensions and weights provided for each model.
Overview
Technical specifications and dimensional features for single-phase and three-phase autotransformers, used in circuits where galvanic separation is not required, suitable for general use in Canada, USA, Europe, and worldwide.
Specifications
  • Standards: EN 61558-2-13, CSA C.22 N. 66, UL 508, EN 60726
  • Material: Electrolytic copper, Class F/h
  • Core Losses: 1.3-1.5 W/kg
  • Operating Time: Continuous
  • Protection Degree: IP 00, Terminals IP 20
  • Insulation Voltage: 2000V between coils and ground
  • Frequency: 50/60 Hz
  • Thermal Class: F (155°C), B (130°C), h (180°C)
  • Max Ambient Temperature: 40°C
  • Rated Supply Voltage: 100V to 600V
  • Core Power: 30VA to 11400VA for single-phase, 0.2 to 500kVA for three-phase
  • Power Range: 100VA to 100,000VA for single-phase, 0.5KVA to 500KVA for three-phase
Dimensional Features
Tables list dimensions and weights of various transformer models, identified by specific codes.
Applications
Autotransformers approved for use in circuits where galvanic separation is not required, suitable for a wide range of applications across different regions.
Overview
Technical specifications and data for various electrical components, including three-phase autotransformers, single-phase reactors, and three-phase reactors, used in applications such as damping, filtering, and switching.
Specifications
Detailed specifications for each component, including power ratings, dimensions, fixing dimensions, weight, and power losses. Components categorized by power capacity, ranging from small units (70 VA) to large units (500,000 VA).
Standards and Approvals
Components comply with international standards such as ENEC 05, cCSAus, KemaKeur, and cURus, designed to meet standards like EN 61558-2-13, CSA C.22 N. 66, UL 508, and EN 60726. Protection against electric shock is classified as Class I, with various degrees of protection for transformers, boxes, and terminals.
Operating Conditions
Components designed for continuous operation with a maximum ambient temperature of 40°C, different thermal classes (B, F, h) depending on the specific component and approval type.
Dimensional Features
Dimensional data for each component, including type of box, fixing dimensions, and weight, crucial for installation and integration into existing systems.
Applications
Components suitable for use in circuits where autotransformers are allowed, and galvanic separation is not required, used in general applications across various markets, including Canada, USA, and Europe.
Overview
Technical specifications and standards for toroidal single-phase autotransformers and line interactive UPS systems, including details on certifications, operational parameters, and safety standards.
Specifications
Autotransformers designed for circuits where galvanic separation is not required, approved for use in Canada, USA, Europe, and worldwide. Key specifications include continuous operation, open core protection, and a maximum ambient temperature of 40°C. Complies with standards such as EN 61558-2-6/4, UL 5085, and CSA C22.2 N. 66.
Technical Data
Transformers have a rated supply voltage range from 110 to 600 V and output power from 20 to 10000 VA, prepared for Class II protection against electric shock, with a thermal class of B (130°C) and F (155°C).
Line Interactive UPS
UPS systems feature interactive technology with stabilizers, serial ports, and resource software, complying with standards like EN 61000-6-1 and EN 55022. Input voltage ranges from 115 to 240 Vac, with an efficiency of 93%. UPS systems use maintenance-free lead batteries with a recharge time of 8 hours to 90% capacity.
Dimensional Features
Lists various models of UPS systems with power ratings, backup times, dimensions, and weights.
Standards and Compliance
Outlines various standards applicable to transformers, emphasizing the importance of CE marking for compliance in Europe and mentions certifications like ENEC and Kema-Keur.
Thermal and Insulation Classes
Explains thermal classes, defining maximum temperature for transformer windings, and insulation classes, ensuring safety against direct and indirect contact.
Compliance and Certification
Outlines compliance requirements for products in different regions, with CSA and UL certifications required in North America. Italweber Elettra S.R.L. has achieved cCsaus and cUrus certifications for Canada and the USA.
Operating Thermal Class
Discusses maximum temperature the windings of a transformer can reach during standard operation, with temperature rise limits based on ambient temperature (40°C) for different classes.
Insulation and Protection Classes
Insulation thermal classes defined by resistance to temperature stress, with standards like UL 1446 and IEC 85. Transformers must adhere to maximum temperature standards for different parts, depending on their thermal class.
Short Circuit and Overload Protection
Transformers not resistant to short circuits must be protected using magneto thermal circuit breakers or fuses, with formulas for calculating inrush current and short-circuit current.
Electrostatic Shield
An electrostatic shield, typically a copper sheet, is used between primary and secondary windings to reduce noise, distortion, and overvoltage.
European Voltages and Regulation Step
CENELEC countries have standardized voltages with specific tolerance limits for monophase and three-phase voltages.
Power Determination
Transformer power is expressed in VA, while reactors are in VAR, with formulas for converting power from kW to kVA.
Grounding of Control Circuits
For command and control circuits, transformers with separate windings should be used, with protection against unintended operations due to insulation failure.
Specifications and Calculations
Outlines specifications for transformers, including calculation of output power using voltage and current, and importance of considering inrush start time power.
Control Circuit Connection and Earth
Transformers with separated windings recommended for control circuits, with protection against insulation breakdown by connecting one end of the secondary winding to the protective bonding circuit.
Autotransformers and Transformers
Autotransformers described as having a single winding with multiple steps, lacking insulated separation between primary and secondary circuits.
Derating: Altitude, Temperature, Working
Explains that transformers often operate under non-nominal conditions, with a formula for calculating a derating coefficient for intermittent service.
Three Phase Connection and Phase Difference
Different connection types for three-phase windings discussed, along with their effects on phase difference and load balancing.
Frequency: 50 and 60 Hz
Transformers designed to work at specific frequencies, with warnings about effects of non-sinusoidal waveforms on performance.
Loss: Copper and Iron
Transformer efficiency is high, with losses primarily due to iron and copper, impacting temperature and voltage drop.
Tropicalization
Transformers treated with class H varnish for improved insulation and resistance to adverse climates.
The Environment
Emphasizes importance of integrating technology with the environment, using eco-friendly materials and processes to minimize environmental impact.
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Catalog excerpts

Transformers-2

Questo nuovo catalogo rappresenta l’evoluzione del progetto “Trasformatori” di Italweber Elettra; progetto che con la recente di acquisizione di CE Costruzioni Elettromeccaniche, storica azienda leader del mercato Italiano, ha visto la nascita di una delle più importanti realtà produttive di trasformatori di bassa tensione presenti sul territorio nazionale. This new catalog is the evolution of the “Transformers” project in ITALWEBER Elettra; this project with the recent acquisition of CE Costruzioni Elettromeccaniche, historic leader of the Italian market, has seen the birth of one of the most...

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Transformers-3

Fondate nello stesso anno, il 1993, le due realtà di Caprino Veronese e di Busto Garolfo sono in grado di offrire una gamma di prodotti riteniamo tra le più complete possibili. Strutture moderne ampi spazi produttivi e attrezzature all’avanguardia offrono garanzie di affidabilità e tempestività di consegna. Tutto ciò a supporto della strategia aziendale che pone, come in tutte le società del gruppo Italweber, il cliente al centro del progetto di business, nella consapevolezza che la catena del valore per noi di Elettra si fonda sulla relazione tra persone, con chiarezza di rapporto e intenti...

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Transformers-4

Qualità secondo la moderna accezione del termine, non è solo realizzare prodotti secondo gli standard più elevati richiesti dalle normative internazionali, ma offrire servizio e competenza tecnica, mettere a disposizione del cliente una sala prove completa, dotata di tutti gli strumenti necessari a garantire un controllo su ogni pezzo prodotto, un sistema informatico innovativo e una gestione per processi. Questo per noi significa essere partner, offrire la certezza di un rapporto solido, basato sulla competenza. Qualità costante nel tempo e soddisfazione del cliente sono gli obiettivi della...

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Transformers-5

DESCRIZIONE \ DESCRIPTION TRASFORMATORI MONOFASE Dl COMANDO CL. F SINGLE PHASE CONTROL TRANSFORMERS CL. F OMOLOGAZIONI \ STANDARDS TRASFORMATORI MONOFASE Dl SICUREZZA E ISOLAMENTO CL.E SINGLE PHASE SAFETY AND INSULATING TRANSFORMERS CLE TRASFORMATORI MONOFASE Dl SICUREZZA E ISOLAMENTO CL.F SINGLE PHASE SAFETY AND INSULATING TRANSFORMERS CL.F TRASFORMATORI MONOFASE Dl SICUREZZA ISOLAMENTO CL.F USCITA DIRETTA SINGLE PHASE SAFETY AND INSULATING TRANSFORMERS CL.F DIRECT OUTPUT TRASFORMATORI MONOFASE Dl SICUREZZA ISOLAMENTO CL.F USCITA DIRETTA SINGLE PHASE SAFETY AND INSULATING TRANSFORMERS CL.F DIRECT...

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Transformers-6

SISTEMA Dl COMPOSIZIONE DEI CODICI STANDARD/STANDARD CODE SETTING TIP0/7YP5; OCM - OMT - OTT - OTTC - OAM - OAT - OATC - OTR - OATR Tipo di trasf., codice rilevabile da catalogo o listino Codice identificazione tensioni del primario Primary code N.B.: collegamento trasformatori trifase standard y (stella) Note: Standard threephaseconnection is star Codice identificazione tensioni del secondario Secondary code N.B.: collegamento trasformatori trifase standard D/Yn Note: Standard threephase connection is star + N Tipo di trasf., codice rilevabile da catalogo o listino Codice identificazione tensioni...

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Transformers-7

Trasformatori Monofase di Comando Trasformatori di Comando, per circuiti di comando e controllo, adatti a tutte le applicazioni dove e' richiesta la separazione galvanica e I'isolamento semplice. La flessibilita costruttiva permette la realizzazione di prodotti fuori standard. Dati tecnici Protezione dai contatti diretti e indiretti: Classe 1 Servizio: Continuo Grado di protezione morsetti: IP 20 Single Phase Control Transformers Control transformers, for circuit command and control; suitable for all applications where request for galvanic separation and simple isolation. The flexible construction...

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Transformers-8

Trasformatori Monofase di Sicurezza I trasformatore di sicurezza e destinato ad alimentare circuiti a bassissima tensione, inferiori a 50 volt a vuoto, eventuali con- tatti accidentali con le fasi del secondario non rappresentano un pericolo. II funzionamento ad alte temperature pub danneggiare gli isolanti, la classe termica B offre garanzia di sicurezza. Dati tecnici Protezione dai contatti diretti e indiretti: Classe 1 Servizio: Continuo Grado di protezione morsetti: IP 20 Single phase Safety Transformers The safety transformer is intended to circuits with very low voltage below 50 volt vacuum,...

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Transformers-9

Trasformatori Monofase di Sicurezza I trasformatore di sicurezza e destinato ad alimentare circuiti a bassissima tensione, inferiori a 50 volt a vuoto, eventuali con- tatti accidentali con lefasi del secondario non rappresentano un pericolo. II funzionamento ad alte temperature pub danneggiare gli isolanti, la classe termica B offre garanzia di sicurezza. Single phase Safety Transformers The safety transformer is intended to circuits with very low voltage below 50 volt vacuum, any accidental contact with the phases of the secondary does not represent a danger. Operation at high temperatures can...

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Transformers-10

Trasformatori Monofase di Isolamento in trasformatori di Isolamento sono caratterizzati da avvolgimenti separati elettricamente tramite un doppio strato di isolanti for- mato da carte e nastri rinforzati al fine di evitare possibili rischi di contatto con parti in tensione o con la massa in caso guasto dell'isolamento principale. Dati tecnici Protezione dai contatti diretti e indiretti: Classe 1 Servizio: Continuo Grado di protezione morsetti: IP 20 Single phase Insulating Transformers Isolation transformers are characterized by windings electrically separated by a double layer of insulation...

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Transformers-11

Trasformatori Monofase di Isolamento in trasformatori di Isolamento sono caratterizzati da avvolgimenti separati elettricamente tramite un doppio strato di isolanti for- mato da carte e nastri rinforzati al fine di evitare possibili rischi di contatto con parti in tensione o con la massa in caso guasto deH'isolamento principale. Dati tecnici Protezione dai contatti diretti e indiretti: Classe 1 Servizio: Continuo Grado di protezione morsetti: IP 20 Single phase Insulating Transformers Isolation transformers are characterized by windings electrically separated by a double layer of insulation made...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.