Single Phase 380v to 220v 30kva Step Down Transformer Isolation 10kva Oil Immersed Transformer

1. Product Overview

The Single Phase 380v to 220v 30kva Step Down Transformer Isolation 10kva Oil Immersed Transformer is a professional single-phase voltage conversion and power isolation electrical equipment designed and manufactured in compliance with international IEC industrial standards. This dual-specification oil immersed transformer integrates step-down voltage regulation and electrical isolation functions, covering two mainstream rated capacities of 10kVA and 30kVA, with a standard voltage conversion ratio of single-phase 380V input to 220V output.

Different from conventional dry-type transformers, this oil immersed transformer adopts mature oil natural air natural (ONAN) cooling technology and fully insulated oil-immersed structure. It effectively solves the problems of voltage mismatch and electrical signal interference in single-phase power systems. As a high-performance single phase step down transformer with isolation function, it features stable voltage conversion, excellent electrical isolation performance, low operation noise and strong environmental adaptability, widely used for precise power supply and electrical safety protection in various small and medium-sized power consumption scenarios.

2. Core Technical Parameters

This 380v to 220v step down isolation transformer adopts standardized industrial design with stable and reliable core parameters, meeting diversified single-phase power supply demands:

• Product Type: Single Phase Oil Immersed Step-Down Isolation Transformer

• Rated Capacity: Optional 10kVA / 30kVA dual specifications

• Rated Voltage Ratio: 380V (Primary Input) / 220V (Secondary Output)

• Cooling Method: ONAN Oil Natural Air Natural Self-Cooling

• Rated Frequency: 50Hz / 60Hz universal for global power grids

• Isolation Performance: Complete electrical isolation between primary and secondary coils, effectively isolating static electricity, surge voltage and harmonic interference

• Winding Material: High-purity copper winding, low resistance and high conductivity

• Core Material: High-quality silicon steel sheet, low no-load loss and high magnetic permeability

• Insulation Grade: High-grade oil insulation, strong breakdown resistance and aging resistance

3. Core Product Purposes

The core purpose of the single phase 380v to 220v isolation transformer is to realize safe and accurate single-phase voltage conversion and electrical isolation protection. Firstly, it efficiently steps down 380V industrial high voltage to standard 220V civilian and equipment voltage, solving the voltage mismatch problem between 380V power supply lines and 220V terminal electrical equipment, ensuring the normal start and stable operation of electrical devices.

Secondly, the built-in isolation function of this 10kVA/30kVA oil immersed transformer completely isolates the primary power grid and secondary load equipment. It can effectively filter grid harmonic interference, block surge current and static induction, avoid equipment burnout caused by grid voltage fluctuation and abnormal current, and protect the safety of precision electrical equipment and user power consumption.

In addition, the oil-immersed heat dissipation structure ensures long-term continuous stable operation of the equipment, maintaining constant 220V voltage output under rated load, realizing long-term stable power supply and voltage stabilization for various single-phase power consumption systems.

4. Typical Application Scenarios

With dual capacity options of 10kVA and 30kVA, as well as excellent step-down and isolation performance, this single phase step down oil immersed transformer is widely applicable in various scenarios requiring 380V to 220V voltage conversion and electrical isolation protection:

4.1 Precision Equipment Power Supply

Suitable for laboratory precision instruments, testing equipment, medical auxiliary equipment and electronic precision devices. The efficient isolation function filters grid clutter and voltage spikes, provides pure and stable 220V power supply for precision equipment, and avoids measurement errors and equipment damage caused by power grid interference.

4.2 Industrial Auxiliary Power Distribution

Widely used in small industrial workshops, mechanical supporting equipment, automation auxiliary circuits and on-site temporary power consumption. It converts 380V industrial power to 220V working voltage for small motors, control panels and auxiliary electrical equipment, adapting to long-term intermittent and continuous industrial operation conditions.

4.3 Commercial & Special Scenario Power Consumption

Applicable for shopping mall auxiliary equipment, communication base station supporting power supply, monitoring system power distribution and outdoor temporary engineering power supply. The oil-immersed waterproof and dustproof structure adapts to complex outdoor and semi-outdoor environments, providing safe and isolated power guarantee for commercial and special engineering equipment.

4.4 Civil & Regional Voltage Conversion

Suitable for rural power grid transformation, remote regional power supply and old community power renovation projects. It solves the problem of inconsistent local power supply voltage and terminal equipment voltage, stably outputs standard 220V voltage, and ensures the safe power consumption of household electrical appliances and civilian equipment.

5. Core Product Features

5.1 Dual-Capacity Optional & Strong Applicability

This 380v to 220v step down transformer provides 10kVA and 30kVA two capacity specifications, covering low-power and medium-power single-phase load demands. Users can select the appropriate model according to actual power load, which perfectly adapts to different power consumption scenarios from precision small equipment to industrial auxiliary large load.

5.2 Professional Isolation Function & High Safety

The primary and secondary windings adopt fully isolated structural design, with no direct electrical connection. The excellent isolation performance can effectively isolate grid surge voltage, harmonic interference and leakage current, prevent electric leakage and static interference, greatly improve the safety level of power consumption, and protect personnel and equipment safety in real time.

5.3 Oil Immersed Cooling & Stable Operation

Adopting advanced oil immersed heat dissipation technology, high-purity transformer oil is used for circulating heat dissipation and overall insulation. Compared with dry-type transformers, this oil immersed transformer has faster heat dissipation speed, stronger overload resistance and more stable long-term operation performance. It can continuously work under high-load and high-temperature environments without overheating failure.

5.4 Low Loss & Energy Saving

Equipped with high-quality low-loss silicon steel sheet core and high-conductivity copper windings, the equipment effectively reduces no-load loss, load loss and magnetic leakage loss. The overall power conversion efficiency is higher than 97%, with low heat generation and low energy consumption during operation. It can effectively reduce long-term operating power consumption costs for users, meeting global energy-saving and environmental protection standards.

5.5 Durable Structure & Low Maintenance

The whole machine adopts fully sealed oil tank structure and anti-corrosion metal shell, which is waterproof, dustproof and anti-rust, adapting to various harsh indoor and outdoor working environments. The ONAN passive cooling structure has no vulnerable moving parts, with low failure rate and long service life. The sealed design avoids insulating oil leakage and deterioration, greatly reducing daily maintenance workload and later operating costs.

5.6 Simple Installation & Wide Compatibility

The single-phase integrated structure is compact in size and light in weight, supporting ground-mounted and fixed installation. It is compatible with 50Hz/60Hz global power grid standards, simple in on-site wiring and convenient in transportation and commissioning. It can be quickly connected to the power system and put into operation, with high engineering application efficiency.