Overview

This document provides detailed technical specifications, ratings, dimensions, and accessory information for a series of industrial electrical machines, likely alternators or generators, identified by model codes such as ECP28-S/4, ECP28-M/4, and others. The data covers electrical ratings at various voltages and frequencies, mechanical dimensions, performance parameters, and available accessories.

1. Electrical Ratings and Performance

• Frequency and Voltage Ratings: The equipment operates primarily at 50 Hz and 60 Hz frequencies with voltage ratings including 115 V, 200 V, 230 V, 380 V, 400 V, 415 V, 440 V, 460 V, 480 V, and 240 V depending on configuration.
• Connection Types: Various winding connections are specified: Series Star (Y), Parallel Star (YY), Series Delta (∆), and Parallel Delta (∆∆).
• Power Ratings (KVA): Continuous three-phase power ratings are provided for different classes of insulation (Class H with ΔT=125 °C and Class F with ΔT=105 °C) and power factors (cos ϕ 0.8 and 1).
• Efficiency: Efficiency percentages (η %) are given for Class H insulation at specified temperature rises, typically ranging from approximately 83.5% to 90% depending on model and operating conditions.
• Power Factor (COS ϕ): Ratings are provided for cos ϕ values of 0.8 and 1, indicating performance under different load conditions.
• Temperature Rise and Ambient Conditions: Temperature rise ratings include 125 °C, 150 °C, and 163 °C with ambient temperatures of 27 °C and 40 °C, indicating thermal performance limits.
• Noise Levels: Noise emissions are specified in dB(A), with values around 68 to 90 dB depending on model and operating frequency.

2. Mechanical Specifications and Dimensions

• Physical Dimensions: Detailed dimensions in millimeters are provided for various models, including parameters labeled A, B, C, CG, O, P, Q, and angles such as α and α1. These correspond to frame sizes, flange dimensions, and mounting details.
• Weight: Weights are listed in kilograms, varying by model and configuration.
• Form Factors: The document references mounting forms such as B3, B14, and MD35, indicating standard industrial mounting arrangements.
• Couplings: Disc coupling dimensions and specifications are included, with measurements for length (L), diameter (d), and flange sizes.

3. Accessories and Protection Features

• Mechanical Protection: IP ratings of IP23 and IP45 are mentioned, indicating degrees of ingress protection against dust and water.
• Thermal Protection: Thermal protection devices such as PTC and PT100 sensors are available.
• Heaters and Regulators: Optional heaters and regulators (e.g., DSR bimetallic device, UVR6 regulator) can be supplied on request.
• Air Volume: Airflow rates are specified in cubic meters per minute (m3/min) for cooling performance at different frequencies and distances (1m and 7m).

4. Model Identification and Variants

• Models are identified by codes such as ECP28-S/4, ECP28-M/4, ECP28-2L/4, ECP28-VL/4, ECP28-1VS/4, ECP28-2VS/4, and ECP28-0S/4.
• Each model has specific electrical and mechanical characteristics, including KVA ratings, temperature rise limits, and physical dimensions.
• Standard and optional features are indicated, allowing customization based on application requirements.

5. Manufacturer Information

The equipment is manufactured by MECCALTE spa, located in Creazzo (VI), Italy. Contact details including telephone, fax, email, and website are provided for further inquiries.

Critical Information Summary

• Ensure correct voltage and frequency matching for application (50 Hz or 60 Hz).
• Select appropriate connection type (Star or Delta) based on system requirements.
• Consider insulation class and temperature rise ratings for thermal management.
• Check mechanical dimensions and mounting form to ensure compatibility with installation site.
• Use specified protection devices and accessories to enhance reliability and safety.
• Refer to noise level data for compliance with environmental and workplace standards.