Three-Phase Power Autotransformers Overview

Compliance and Standards:
These autotransformers comply with the IEC 726 standard, ensuring they meet international safety and performance criteria.

Voltage Specifications:
The standard voltages for these transformers are 230/400 V, with the option for other voltages upon request. They are designed to be reversible, offering flexibility in application.

Technical Specifications:
The document provides a detailed table of specifications for various power ratings (KVA), including dimensions (A1, B1, A2, B2, A3, B3, C), weight (KG), no-load losses (W fe), full-load losses (W tot), and voltage drop (∆v).

• Power ratings range from 100 KVA to 500 KVA.
• No-load losses (W fe) and full-load losses (W tot) are specified for each power rating, indicating efficiency levels.
• Voltage drop (∆v) is consistent at 3 across all models, indicating stable performance from no-load to full-load conditions.

Environmental and Protection Features:
The transformers are designed to operate in ambient temperatures up to 40 °C. They have a protection rating of IP00, indicating no special protection against dust or water, and an electrical protection rating of I. Thermal insulation is available in class F or H, providing options for different thermal endurance requirements.