Isolation Transformer

Three Phase Dry Type Isolating Transformer

Brand: HENGFENGYOU
Series: DG
USES: High and low voltage complete sets of electrical, precision machine tools, UPS, electroplating, lighting, heating, communication, chemical industry and other equipment control power, power
Country of origin: China
Terms of payment: L/C, T/T, Western Union, Paypal, Money Gram
Certification: ISO9001、CB、CE、KEMA

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Three Phase Dry Type Isolating Transformer overview

-Dry isolation transformer is produced by Hengfengyou Electric using high quality materials and advanced technology. It has the advantages of moistureproof and convenient maintenance. It is mainly used in various power supply places with AC 50/60Hz and voltage not exceeding 660V

- Actual measurement is better than GB and IEC standards, CB CCC KEMA certification

- High reliability of operation verification in more than 50 countries and regions around the world.

Mainly used in various high and low voltage complete sets of electrical, precision machine tools, UPS, electroplating, lighting, heating, communication, chemical industry and other equipment control power, power supply

- Products are mainly sold to Central Asia, Southeast Asia, the Middle East, Africa, South America and other markets and regions

Three Phase Dry Type Isolating Transformer advantage

> Leading technology

- Copper foil winding technology, high quality A class insulation material insulation

Small magnetic leakage, high mechanical strength, strong resistance to short circuit

Core 45° fully oblique joint stepping laminated structure

> The iron core

The iron core is made of high quality cold-rolled grain oriented silicon steel sheet with mineral oxide insulation (from Baosteel and WISCO of China).

By controlling the cutting and stacking process of silicon steel sheet, the loss level, no-load current and noise can be minimized

The iron core is specially reinforced to ensure the structure of the transformer is firm during normal operation and transportation

> Winding

Made of high quality copper foil (can be customized aluminum foil), excellent insulation resistance

> High quality material

Baosteel and WISCO produce silicon steel sheets

China's high quality oxygen free copper

> Patent technology

The electrical performance of the transformer has reached the Chinese national standard GB and IEC standards, with high efficiency and low loss characteristics

Conditions of use

- Altitude less than 5000m, air temperature -15℃~45℃, humidity less than 90% (+25℃)

- The vertical incline shall not exceed 5°, there shall be no severe vibration, and the outdoor wind speed shall not exceed 35m/s

- No gas or conductive dust that seriously affects the transformer insulation;

No explosion hazard, no corrosion of electrical components

- If the above normal operating conditions are exceeded, customers can contact our company for customized solutions

Three Phase Dry Type Isolating Transformer parameters

- Isolation transformer voltage grade:

1140V, 690V, 660, 600V, 480V, 460V,

415V, 440V, 400V, 380V, 360V, 315V, 220V, 208V, 200V, 127V, 110V, 100V, 48V, 36V, 24V, 12V, 6.3V and so on

- All kinds of input and output voltage, connection group and tap line group capacity allocation can be carefully designed and manufactured according to user requirements.

Model	Input voltage（V）	output voltage（V）	Product size without shell (CM) / weight (kg)	Product size with shell (CM) / weight (kg)
SG-5 KVA	660V	380V	30×15×25/35	45×25×30/56
SG-6KVA	400V	220V	30×16×25/40	45×25×30/64
SG-7KVA	380V	110V	35×15×30/45	50×25×35/80
SG-8KVA	200V	36V	35×16×30/55	50×25×35/80
SG-10KVA			42×21×42/90	60×32×65/130
SG-15KVA			52×24×52/135	70×35×77/185
SG-20KVA			52×24×52/180	70×35×77/220
SG-30KVA			55×28×65/220	80×40×87/260
SG-40KVA			61×30×65/265	90×50×95/320
SG-50KVA			61×30×65/295	90×50×95/360
SG-60KVA			70×32×66/370	100×50×105/440
SG-80KVA			70×32×67/450	100×50×105/530
SG-100KVA			75×35×68/490	100×50×105/570
SG-120KVA			75×35×68	100×50×105/600
SG-150KVA			85×37×68	120×65×115/690
SG-180KVA			95×45×83	120×65×115/930
SG-200KVA			95×45×83	120×65×115/1010
SG-250KVA			95×45×83	120×65×115/1180
SG-300KVA			105×45×95	120×70×125/1450
SG-320KVA			105×45×95	130×50×135/1490
SG-350KVA			105×45×95	130×50×135/1600
SG-400KVA			115×55×105	140×60×145/1700

Ordering instructions

- Main parameters of transformer

- Transformer use environment

- Other customization requirements

- Minimum order quantity: 1 set, global delivery within 7 days

- The normal delivery period is 30 days, fast delivery worldwide

Our Advantages

- Authoritative certification: ISO, CE, CB, CCC, SASO, KEMA, etc

- Perfect SQA quality management system and patented technology to ensure high quality products

- Efficient production equipment and low raw material prices ensure the price advantage

- Adequate inventory, short lead time, fast delivery worldwide

- Perfect after-sales service system, so that customers buy worry-free

- Welcome customers to visit our factory and provide OEM/ODM service

Three Phase Dry Type Isolating Transformer FAQ

What is a three-phase dry-type isolating transformer?
It is a transformer that electrically isolates the primary and secondary circuits without using liquid cooling, making it safer and maintenance-free.
What are the key applications of these transformers?
They are commonly used in industrial plants, data centers, hospitals, and commercial buildings where electrical isolation and safety are critical.
How does a dry-type isolating transformer differ from an oil-filled transformer?
Dry-type transformers use air or solid insulation, eliminating the risk of oil leaks and reducing fire hazards, unlike oil-filled transformers.
What are the efficiency ratings for these transformers?
They typically meet or exceed industry standards such as DOE 2016 or IEC 60076, with efficiencies ranging from 95% to 98% depending on the design.
Can these transformers handle high inrush currents?
Yes, they are designed to withstand high inrush currents, making them suitable for applications with frequent motor starts or heavy loads.
What are the standard voltage ratings available?
Common voltage ratings include 480V to 208V, 600V to 240V, and custom configurations based on specific requirements.
Are these transformers suitable for outdoor installation?
While primarily designed for indoor use, some models come with weatherproof enclosures (NEMA 3R or higher) for outdoor applications.
What maintenance is required for a dry-type isolating transformer?
Minimal maintenance is needed—periodic inspection for dust accumulation, loose connections, and thermal checks ensure long-term reliability.
Do these transformers provide noise reduction?
Advanced designs include low-noise features, but noise levels depend on the load and cooling method (natural or forced air).
What safety certifications should I look for?
Ensure compliance with UL 5085, CSA C22.2, or IEC standards to guarantee safety and performance reliability.