LogoDNIPRO ELECTROTECHNICAL PLANT LLC
UA|RU|EN
✉ info@electromotor.dp.uaContact us
ATF Autotransformers

Three-Phase ATF Series Autotransformers

Three-phase ATF series autotransformers are power electrical equipment designed to change the level of three-phase AC voltage. Unlike standard transformers, ATF units share a single winding for the primary and secondary circuits, providing a direct electrical (galvanic) connection between them.

View CatalogGet a Quote
Three-Phase ATF Series Autotransformers
Three-Phase ATF Series Autotransformers
Advantages

Key Advantages

ATF autotransformers combine high efficiency with compact size and cost-effectiveness thanks to the direct electrical connection between windings.

  • High EfficiencySince part of the energy is transferred directly through the electrical path, core and copper losses are minimal (efficiency up to 98-99%).
  • Compact and LightweightSmaller dimensions and weight compared to isolating transformers of similar through-power.
  • Cost-EffectivenessReduced winding wire and electrical steel consumption significantly lowers equipment cost.
Catalog

Three-Phase ATF Autotransformers

Models of various power ratings — from compact solutions for drives to powerful units for industrial networks.

Three-Phase Autotransformer ATF 1000 VA

Three-Phase Autotransformer ATF 1000 VA

Compact solution for voltage matching of low-power equipment.

Power: 1000 VA
Primary voltage: 380/400/415 V
Secondary voltage: 200/220/380 V
Country of origin: Bulgaria
Warranty: 12 months
On request
Order
Three-Phase Autotransformer ATF 1600 VA

Three-Phase Autotransformer ATF 1600 VA

Optimal choice for medium-power drives.

Power: 1600 VA
Primary voltage: 380/400/415 V
Secondary voltage: 200/220/380 V
Country of origin: Bulgaria
Warranty: 12 months
On request
Order
Three-Phase Autotransformer ATF 2000 VA

Three-Phase Autotransformer ATF 2000 VA

For connecting equipment with higher current draw.

Power: 2000 VA
Primary voltage: 380/400/415 V
Secondary voltage: 200/220/380 V
Country of origin: Bulgaria
Warranty: 12 months
On request
Order
Three-Phase Autotransformer ATF 2500 VA

Three-Phase Autotransformer ATF 2500 VA

Solution for machine tool and conveyor line modernization.

Power: 2500 VA
Primary voltage: 380/400/415 V
Secondary voltage: 200/220/380 V
Country of origin: Bulgaria
Warranty: 12 months
On request
Order
Three-Phase Autotransformer ATF 3000 VA

Three-Phase Autotransformer ATF 3000 VA

For higher-power industrial electric drives.

Power: 3000 VA
Primary voltage: 380/400/415 V
Secondary voltage: 200/220/380 V
Country of origin: Bulgaria
Warranty: 12 months
On request
Order
Three-Phase Autotransformer ATF 4000 VA

Three-Phase Autotransformer ATF 4000 VA

A powerful solution for heavy industrial equipment.

Power: 4000 VA
Primary voltage: 380/400/415 V
Secondary voltage: 200/220/380 V
Country of origin: Bulgaria
Warranty: 12 months
On request
Order
ATF
Three-Phase Autotransformer ATF-5 3x380/120/32

Three-Phase Autotransformer ATF-5 3x380/120/32

Specialized version with a reduced secondary voltage of 120/32 V.

Power: on request
Primary voltage: 380 V
Secondary voltage: 120/32 V
Country of origin: Bulgaria
Warranty: 12 months
On request
Order
Three-Phase Autotransformer ATF-7 3x380/120/32

Three-Phase Autotransformer ATF-7 3x380/120/32

Specialized version with a reduced secondary voltage of 120/32 V.

Power: on request
Primary voltage: 380 V
Secondary voltage: 120/32 V
Country of origin: Bulgaria
Warranty: 12 months
On request
Order
Three-Phase Autotransformer ATF-9 3x380/120/32

Three-Phase Autotransformer ATF-9 3x380/120/32

Specialized version with a reduced secondary voltage of 120/32 V.

Power: on request
Primary voltage: 380 V
Secondary voltage: 120/32 V
Country of origin: Bulgaria
Warranty: 12 months
On request
Order
Technical Data

Model Comparison

  • Rated input voltage380 / 400 / 415 V (or custom)
  • Rated output voltage200 / 220 / 380 V (or custom)
  • AC frequency50 / 60 Hz
  • Winding connection schemeStar with neutral (Yn)
  • Insulation classB / F / H
  • Protection ratingIP00 (open) / IP20 / IP23 (enclosed)
  • Typical power ratingS₁ᵧₚ = Sᵣₐₜₑᵈ × (1 − 1/k), where k = Uᵢₙ / Uₒᵤₜ — transformation ratio
Applications

Application Areas of ATF Autotransformers

Voltage matching in industrial networks, connecting imported equipment, and modernizing production lines.

Industrial Electric Drives
Variable Frequency Drives
Servo Drives
Machine Tool Modernization
CNC Systems
Conveyor Lines
Power Industry
Industrial Networks

Contact us to order an autotransformer

Leave a request and we will help you select the right three-phase ATF autotransformer for your equipment or prepare a solution based on your technical requirements.

Our contacts

Working hours: Mon – Fri, 08:30 to 17:30. Orders via the website are accepted 24/7.

Email: info@electromotor.dp.ua

Our other websites:
VEICHI Bulgaria — Veichi Electric frequency inverters
DETZ — Industrial electrical equipment