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LOW AND MEDIUM VOLTAGE TRANSFORMERS FOR METERING AND PROTECTION
LOW AND MEDIUM VOLTAGE TRANSFORMERS FOR METERING AND PROTECTION
The document provides comprehensive details on medium and low voltage transformers used for metering and protection. These transformers are designed to measure high currents and protect electrical circuits, available for secondary currents of 1A and 5A, with primary currents ranging from 1A to 12000A.
Transformers should not operate with an open secondary winding to avoid dangerous overvoltages. Maintenance involves short-circuiting the secondary to prevent core magnetization. The document outlines thermal and dynamic current capacities, maximum operating voltage, and test voltage specifications.
The transformers are environmentally safe, and used or damaged products should be dismantled for recycling or disposal by specialized companies.
CONTREL provides certification for fiscal use of metering equipment for all transformer models meeting minimum performance standards. Certification of the entire plant must be requested from local UTF offices.
Key terms such as thermal current (Ith), dynamic current (Idin), maximum operating voltage, test voltage, and safety factor (FS) are defined, explaining their significance in transformer operation.
Tables detail cable sections, power ratings, and bar dimensions for different rated currents. Accuracy classes for measuring current transformers are specified, outlining permissible current and angle error limits according to standards.
The document provides detailed specifications and technical data for various types of transformers, including measurement transformers, protection transformers, and voltage transformers.
Multiple series and models of transformers are listed, each with specific dimensions, window sizes, and primary current ratings, categorized by application.
Key technical parameters include operating frequency, rated continuous thermal current, rated thermal short circuit current, safety factor, maximum operating voltage, test voltage, and maximum power dissipation.
Detailed instructions for mounting transformers, including fixing on bars, cables, or panels, emphasizing the use of supplied accessories.
The transformers comply with EN/IEC 61869-1 and 61869-2 standards, with features like self-extinguishing thermoplastic material and optional tropicalization.
Designed for medium and low voltage applications, focusing on compact size for limited space installations, offering double terminals for connection flexibility.
Different ratios or technical data can be provided upon request, with a section on protection transformers used with relays.
Adheres to EN/IEC 61869-1 and 61869-2 standards for instrument transformers.
Transformers operate at 50 to 60 Hz, with an option for 400 Hz upon request.
Rated continuous thermal current (Icth) is 100% of the primary current (Ipr), with rated thermal short circuit current (Ith) at 60 times Ipr, and rated dynamic current (Idyn) at 2.5 times Ith.
The safety factor (FS) is ≤ 15.
Maximum operating voltage (Um) is 0.72 kV, with an option for 1.2 kV. Test voltage is 3 kV, with an option for 6 kV.
Maximum power dissipation is ≤ 7W.
Maximum allowable temperature on the cable or bar is 120°C, with an operating temperature range of -25°C to +50°C, and a storage temperature range of -40°C to +90°C.
Relative humidity should be ≤ 85%, with insulation class B.
Housing made of self-extinguishing thermoplastic material (UL94-V0), with a protection degree of IP40 for housing and IP20 for terminals.
Transformers can be mounted on a DIN rail (35mm) and fixed with screws, with optional accessories like a sealable terminal cover and faston connections kit.
Various measuring transformers with different primary currents, accuracy classes, and power ratings, suitable for medium and low voltage applications.
Catalog excerpts
DI MISURA E PROTEZIONE PER BASSA E MEDIA TENSIONE LOW AND MEDIUM VOLTAGE TRANSFORMERS ITALIAN DESIGN
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More than 40 years of experience and constant evolution are the best guarantee for our customers. Dal 1985 Contrel si distingue per la progettazione, la produzione e la commercializzazione di strumenti per la protezione elettrica industriale, per la misurazione e il controllo dell’energia elettrica, nonché negli impianti di Since 1985 Contrel has distinguished itself for the design, production and marketing of instruments for industrial electronic protection, for the measurement and control of energy consumption, as well as in insulation sorveglianza dell’isolamento e dei sistemi di allarme....
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TRASFORMATORI DI MISURA E PROTEZIONE PER MEDIA E BASSA TENSIONE | MEDIUM AND LOW VOLTAGE TRANSFORMERS FOR METERING AND PROTECTION TRASFORMATORI DI MISURA E PROTEZIONE PER MEDIA E BASSA TENSIONE | MEDIUM AND LOW VOLTAGE TRANSFORMERS FOR METERING AND PROTECTION |
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Di seguito la tabella del massimo carico in Ampere permissibile, Below the table of the maximum permissible load in amperes, su barre di rame secondo le norme vigenti of copper bars according to the present standards: CABLE SECTION CABLE SECTION INFORMAZIONI GENERALI I Trasformatori di corrente sono apparecchiature progettate per consentire la misurazione di correnti molto elevate utilizzando normali strumenti lettori, e/o per la protezione dei circuiti elettrici nelle piu svariate applicazioni. Sono costruiti per correnti secondarie di 1A e 5A (correnti secondarie differenti possono essere realizzate...
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% errore correlate ACCURACY CLASS ■ CURVA CARATTERISTICA DEGLI ERRORI Caratteristica classe 0,2 - 0,5 - 1 Secondo le norme vigenti, i limiti di errore della corrente ed i limiti di errore della fase d'angolo di ogni trasformatore , devono essere compresi tra i dati in tabella: Per certi sistemi di protezione, dove le caratteristiche dei trasformatori di corrente dipendono dal progetto globale delle apparecchiature, prescrizioni aggiuntive sono riportate nelle norme per la classe PX. Con questa classe, si identifica un trasformatore di corrente a bassa reattanza di dispersione, per il quale la...
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TRASFORMATORI DI BASSA TENSIONE La nostra gamma di prodotti per bassa tensione, ha sostenuto e superato le prove di tipo previste dalla normativa di riferimento Le prove di corto circuito sono state effettuate nei laboratori di testing CESI/ KEMA sottoponendo i trasformatori amperometrici a corrente termica Ith di 100kA e Idyn di 250kA. Our range of low voltage products, took and passed the type tests required by the reference standard CEI EN 61869-2. The short-circuit tests were carried out in the CESI/KEMA testing laboratories by subjecting the current transformers to a thermal current Ith...
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TRASFORMATORI DI MISURA - BUSBAR/CABLE MEASUREMENT TRANSFORMERS TRASFORMATORI DI PROTEZIONE - BUSBAR/CABLE PROTECTION TRANSFORMERS Seri e/Series Modello / Model Serie/ Series Ingombro / Overall dim LxPxH (mm) Pagina / Sheet Corrente Primaria Primary Current TRASFORMATORI DI MISURA - BUSBAR/CABLE MEASUREMENT TRANSFORMERS TRASFORMATORI DI PROTEZIONE - BUSBAR/CABLE PROTECTION TRANSFORMERS Modello / Model Pagina / Sheet 10 | TRASFORMATORI DI MISURA E PROTEZIONE PER MEDIA E BASSA TENSIONE | MEDIUM AND LOW VOLTAGE TRANSFORMERS FOR METERING AND PROTECTION (COUtreO elettronica COIltH elettronica TRASFORMATORI...
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TRASFORMATORI DI MISURA - BUSBAR/CABLE MEASUREMENT TRANSFORMERS CUSTOM (vertical) TTCBV Window LxH 126x55 55x126 127x60 60x127 128x105 SU RICHIESTA SU RICHIESTA TRASFORMATORI DI MISURA A CAVO/SBARRA PASSANTE APRIBILI - CABLE/BUSBAR MEASUREMENT TRANSFORMERS SPLIT CORE Modello / Model Prestazioni su richiesta On request differen burden TRASFORMATORI DI MISURA - BUSBAR/CABLE MEASUREMENT TRANSFORMERS Modello / Model 12 | TRASFORMATORI DI MISURA E PROTEZIONE PER MEDIA E BASSA TENSIONE | MEDIUM AND LOW VOLTAGE TRANSFORMERS EDO METERING AND PROTECTION TRASFORMATORI DI MISURA E PROTEZIONE PER MEDIA E...
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TRASFORMATORI DI MISURA - BUSBAR/CABLE MEASUREMENT TRANSFORMERS TRASFORMATORI DI MISURA SOMMATORI MEASURING SUMMATION CURRENT TRANSFORMERS TRASFORMATORI DI MISURA A PRIMARIO AVVOLTO PRIMARY WOUNDED MEASURING CURRENT TRANSFORMERS TRASFORMATORI DI MISURA A PRIMARIO AVVOLTO PRIMARY WOUNDED MEASURING CURRENT TRANSFORMERS Serie/ Series Modello / Model Ingombro Overall dim LxPxH (mm) Modello / Model Modello / Model TRASFORMATORI DI TENSIONE - VOLTAGE TRANSFORMERS Modello / Model TRASFORMATORI DI MISURA - BUSBAR/CABLE MEASUREMENT TRANSFORMERS Modello / Model Ingombro Overall dim LxPxH (mm) TRASFORMATORI...
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TRASFORMATORI AMPEROMETRICI PER BASSA TENSIONE CURRENT TRANSFORMERS FOR LOW VOLTAGE TRASFORMATORI AMPEROMETRICI PER BASSA TENSIONE CURRENT TRANSFORMERS FOR LOW VOLTAGE IIIIII ISTRUZIONI Dl MONTAGGIO - ASSEMBLY INSTRUCTIONS Gamma di trasformatori caratterizzata da dimensioni ridotte indicata in tutte quelle installazioni dove lo spazio ha considerevole importanza, e da doppi terminali in opposizione. Range of transformers characterized by small size indicated in all those installations where space has considerable importance and double terminals in opposition. TRASFORMATORI AMPEROMETRICI PER BASSA...
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TRASFORMATORI DI MISURA / MEASURING TRANSFORMERS ACCESSORI / ACCESSORYINCLUSI / SUPPLIED OPZIONALI / OPTIONAL Per guida DIN 35mm For DIN rail 35mm Coprimorsetto sigillabile Sealable terminal cover INCLUSI / SUPPLIED ACCESSORI/ ACCESSORYOPZIONALI / OPTIONAL CODICE ART. / ART. CODE 88 Kit collegamento faston Faston connections kit 18 |TRASFORMATORI DI MISURA E PROTEZIONE PER MEDIA E BASSA TENSIONE | MEDIUM AND LOW VOLTAGE TRANSFORMERS FOR METERING AND PROTECTION TRASFORMATORI DI MISURA E PROTEZIONE PER MEDIA E BASSA TENSIONE | MEDIUM AND LOW VOLTAGE TRANSFORMERS FOR METERING AND PROTECTION | 19
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TRASFORMATORI AMPEROMETRICI PER BASSA TENSIONE CURRENT TRANSFORMERS FOR LOW VOLTAGE CARATTERISTICHE GENERALI / GENERAL CHARACTERISTICS CARATTERISTICHE GENERALI / GENERAL CHARACTERISTICS TBN30A TBN30A+ TRASFORMATORI DI MISURA / MEASURING TRANSFORMERS ACCESSORI / ACCESSORY OPZIONALI / OPTIONAL 88 Kit collegamento faston Faston connections kit 2 0 |TRASFORMATORI DI MISURA E PROTEZIONE PER MEDIA E BASSA TENSIONE | MEDIUM AND LOW VOLTAGE TRANSFORMERS FOR METERING AND PROTECTION (COUtreO elettronica COIltH elettronica TRASFORMATORI DI MISURA E PROTEZIONE PER MEDIA E BASSA TENSIONE | MEDIUM AND LOW...
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TRANSFORMERS64 Pages
- Contrel elettronica measuring instrument
- Monitoring analyzer
- Dry transformer
- Analysis software solution
- Digital I/O
- Real-time software
- IO module
- Cloud-based software
- Digital temperature control
- Analog I/O
- Digital IO module
- Monitoring software solution
- Continuous analyzer
- Contrel elettronica protection relay
- Visualization software solution
- Real-time analyzer
- Integration analyzer
- Encapsulated transformer