220kVA 380V to 70V Dry Type Industrial Step Down Transformer Custom Price Vacuum Furnace Power Supply Heating High Current Solutions

Customization:	Available
Application:	Power, Vacuum Sintering
Phase:	Three

■ Basic Info.

Model NO.

SG-22kVA 380V-70V

Core

Core-type Transformer

Cooling Method

AN

Winding Type

Multi-winding Transformer

Certification

ISO9001, CE, TUV, PSE

Usage

Power Transformer

Frequency

Power Frequency

Shape of Core

Rectangular Core

Type

Three-Phase Dry Transformer

Capacity

220kVA

Efficiency

≥96%

Primary Voltage

380V

Secondary Voltage

70V

Insulation Class

H/F

Winding Materials

Copper/Aluminum

Vector Group

Yd11 Dy11 Yy6 Yd5 Dy1

📦 Packaging & Delivery

Package Size

860.00cm * 500.00cm * 1020.00cm

Gross Weight

780.000kg

Transport Package

Wooden Pallet/Wooden Case

📘 Product Description

Industrial Solution

Ideal for low-volt., high-current power conversion, vacuum-sintered transformers ensure efficient and stable power supply.

1. Copper Wire Winding

Exquisite winding process cuts winding resistance and copper loss, enables energy-efficient power output during high-current transmission.

2. Vacuum Impregnation

Fills evenly in vacuum to form dense insulation layer, enhances insulation, prevents winding issues, resists harsh electrical env. erosion.

Operation Environment

Altitude: Not exceeding 1000m (derating required above 1000m).
Ambient Temperature: -25ºC to 55ºC.
Relative Humidity: ≤95%.
Site Conditions: No chemical deposition, dust, or explosive/erosive medium.
Supply Voltage: Approximates sinusoidal wave with balanced three-phase voltage.

📊 Technical Parameters

Capacity	50VA~2500kVA	Working Efficiency	≥95%
Rated Voltage	<10kV	Temperature Rise	≤125K(H class) / <100K(F class)
Rated Frequency	50~60Hz	Impedance	Customized
Winding Materials	Copper/Aluminum	Connection Section	Dyn11 or Customized
Sound Level	≤75dB	Insulation Class	F/H/A/B

🏢 Manufacturer Profile

Established in 1975, the manufacturer specializes in the production and development of transformers and reactors, integrating both domestic and international advanced technologies. With over fifty years of experience, the company has accumulated rich technical expertise in various application fields.

Leading products include single-phase and three-phase isolation transformers, reactors, high-frequency products, and transformers for rail transit, wind power, and mining projects. The quality management system adheres to ISO 9001:2015 standards, with products certified by CE, TUV, and PSE.

❓ FAQ

Q1: Are you a manufacturer or trading company?

We are a manufacturer specializing in power transformer, inductor, and reactor production for 50 years.

Q2: What are your major products?

Our major products include dry-type transformers, oil-immersed transformers, high/low voltage transformers, line reactors, and high-frequency reactors.

Q3: How do you conduct quality control?

We implement 100% QC inspection. There are 8 specific inspections during the manufacturing process from raw material to final products.

Q4: What is the lead time for production?

Typically 7 to 25 working days depending on the order quantity.

Q5: Can your products be customized?

Yes, our products can be customized according to your specific requirements for voltage, frequency, and insulation class.

Q6: What information is needed for a customized transformer?

A technical drawing is best, or provide us with power capacity, voltage specifications, installation size limits, and insulation class.

220kVA 380V-70V Power Isolation Dry Type Custom Industrial Step Down Transformer Price for Vacuum Furnace to Power Supply and Heating with High Current