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ETITRAFO program

ETITRAFO program

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Overview: This document outlines the technical specifications and data for single-phase safety and insulating transformers, detailing various models, power ratings, dimensions, weight, and packaging information.

Specifications:

Safety Transformers: Designed to supply circuits at a maximum of 50V to ensure safety by minimizing risks from accidental contact with active parts.
Insulating Transformers: Feature primary and secondary windings separated by double or reinforced insulation to prevent risks from insulation faults.
Impregnation: Transformers are impregnated with inorganic resin to enhance material characteristics, prevent humidity penetration, and reduce noise from vibrations.

Technical Data:

Primary Voltage: 230V, 400V
Secondary Voltage: Options include 12V-0-12V, 24V-0-24V, 48V, 115V, and 230V.
Thermal Class: B and F
Material: Electrolytic copper, Class F/H
Voltage Tolerance: +/- 15%

Product Range:

Transformers are available in various power ratings from 30VA to 10000VA.
Dimensions and weight vary according to the power rating, with detailed specifications provided for each model.
Packaging quantities range from 1 to 12 pieces per package, depending on the model.

Key Features:

Comprehensive range of single-phase transformers for safety and insulation applications.
High-quality construction with reinforced insulation for enhanced safety.
Wide range of power ratings and voltage options to suit different applications.

Technical Specifications:
The document provides technical data for single-phase safety and insulating transformers, which are IP20 rated and DIN rail mounted. The primary voltage, thermal class, cable section, and protection details are specified. The transformers are designed for continuous service and must be protected against overloads and short circuits using external fuses or Miniature Circuit Breakers (MCBs).

Protection Guidelines:
Transformers are non-short-circuit-proof and require external protection. The document suggests using time delay fuses (T or aM type) or MCBs with D or K characteristics for input winding protection due to high inrush currents at startup. For secondary side protection, fuses of F or gG type, or MCBs with B or C characteristics are recommended.

Thermal Class and Efficiency:
The transformers have a thermal class F, with specific over-temperature values referenced to an ambient temperature of 25°C. The document explains that high temperatures can deteriorate materials, thus affecting the transformer's lifespan. Efficiency and power loss data are provided, indicating the importance of selecting appropriate thermal classes as per EN 61558 standards.

Rated Power:
Rated power is calculated based on the rated secondary winding voltage and current. For multi-phase transformers, it is the product of the number of phases and the rated secondary voltage and current. The document notes that power may be lower if the transformer is used in a non-continuous work cycle.

General Recommendations:
The document emphasizes the importance of selecting the correct protection for transformers to ensure safety and longevity. It provides a table with suggested protection fuses for both input and output windings, with all values in Amperes.

Catalog excerpts

Technical data Single phase safety and insulating transformers SINGLE PHASE SAFETY AND INSULATING TRANSFORMERS POWER NEEDS CONTROL

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Single phase safety and insulating transformers Safety transformer: It is an insulating transformer designed to supply circuit at a maximum of 50V (safety extra-low voltage). Insulating transformer: It is a transformer in which the primary and secondary windings are separated by a double or reinforced insulation, in order to limit, in the circuit supplied by the secondary winding, any risk due to accidental contacts with active parts or parts that can become active in case of an insulation fault. Impregnation: The transformers are completely impregnated with a inorganic resin. This operation...

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Single phase safety transformers Primary voltage 230, 400V. Secondary voltage 48V (24V-0-24V). Thermal class B Single phase safety transf. 24-0-24V 30VA Single phase safety transf. 24-0-24V 50VA Single phase safety transf. 24-0-24V 75VA Single phase safety transf. 24-0-24V 100VA Single phase safety transf. 24-0-24V 150VA Single phase safety transf. 24-0-24V 200VA Single phase safety transf. 24-0-24V 250VA Single phase safety transf. 24-0-24V 300VA Single phase safety transf. 24-0-24V 400VA Single phase safety transf. 24-0-24V 500VA Single phase safety transf. 24-0-24V 630VA Single phase safety...

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Single phase safety and insulating transformers 400 472 Technical data on page 476

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Single phase safety and insulating transformers Single phase safety transformers Primary voltage 230, 400V: +/- 15V. Secondary voltage 0-24 0-24V. Thermal class B. Type EURO. DIN rail Technical data on page 477 473

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Single phase safety and insulating transformers Single phase insulating transformers Primary voltage 230, 400V: +/- 15V. Secondary voltage 0-110 0-110V. Thermal class B. Type EURO. DIN rail 474 Technical data on page 477

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Single phase safety transformers Primary voltage 230, 400V. Secondary voltage 0-48V. Thermal class B. DIN rail Single phase insulating transformers Primary voltage 230, 400V. Secondary voltage 0-230V. Thermal class B. DIN rail 0 230 Technical data on page 477 475

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Technical data Thermal class B & F Losses in the core sheets Insulation voltage Primary voltage Standard Service type Protection index 1,3 - 1,5 W/kg 4000V between coils 2000V between coils and ground Technical features chart of single phase safety and insulating transformers. Thermal class B

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Technical data Technical data Primary voltage Thermal class Cable section Protection Fixing Standard Service type Protection index Technical parameters for insulating transformers. Thermal class F. Fixed on DIN rail. 150 6,0 3,15 t25 0,63 I,0 t0 The above over temperature values are referred Thermal class: The transformers have some level of power loss that causes a rising in the temperature of the metallic parts and of the windings. High temperatures cause deterioration of the materials and shorten the "average life" of the transformer itself. For this reason the international...

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Technical data

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ETITRAFO program

ETITRAFO program

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