Oil-immersed Transformer

Three dimensional wound core transformer

Brand: HENGFENGYOU
Series: S-MRL
USES: Distribution transformer
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 dimensional wound core transformer overview

- A new type of transformer with more energy saving, compared with S11 with the same capacity transformer, the no-load loss is reduced by more than 25%, and the no-load current is reduced by more than 70%.

- Noise reduction 8dB(A)-- 11dB

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

- More than 50 countries and regions around the world run verification of high reliability

- It is mainly used in 10KV 11KV 13.8KV 15KV 20KV 22 KV 30KV 33KV 34.5 35KV power distribution systems of rural and urban power grids.

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

- Executive standard: IEC60076-1, IEC60076-2, IEC60076-3, IEC60076-5, IEC60076-7, IEC60076-20, IEC 60836, IEC 60944

- GB/T6451-2015, GB 1094.1, GB 1094.2, GB 1094.3, GB 1094.5, GB/T 1094.7, GB/T 2900.95, JB/T 10088, GB 20052

（Three dimensional wound core transformer）

Three dimensional wound core transformer advantage

> Leading technology

High voltage copper strip winding technology, improve lightning resistance

Low voltage copper foil winding technology, high quality A class insulation material insulation

The winding of the core material belt is completed by a special winding machine, which can automatically tilt 30° accurately while winding

Stereo triangle coil core transformer has 10KV and 20KV two kinds of voltage compatible product series

Three dimensional wound core transformer

> The shell

Japanese mitsubishi laser cutting machine and numerical control punching, reducing, folding and other equipment to ensure the accuracy of processing

ABB robot internal and external double layer welding, laser detection, to avoid leakage, pass rate of 99.99998%

Electrostatic plastic spray treatment, 30 years not take off the paint (coating corrosion resistance within 100h, hardness ≥0.4)

Sealed structure, maintenance-free, normal operation life of more than 30 years

> 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).

The three-phase magnetic circuit has no joint, and the direction of magnetic flux is exactly the same as the orientation of silicon steel sheet crystal, which greatly reduces the no-load loss, no-load current and noise

The cores are rolled on the production line, without cross-cutting equipment, and the quality fluctuation caused by manual lamination, lamination and disassembly of the yoke is eliminated

> Winding

The low-voltage winding is made of high quality copper foil (customized aluminum foil) with excellent insulation resistance

The high-voltage winding is usually wound with insulated copper wire (customizable aluminum wire), using the technology patented by hengfengyou electric

It has very good ability to bear radial stress caused by short circuit

> High quality material

Baosteel and WISCO produce silicon steel sheets

China's high quality oxygen free copper

CNPC (Kunlun Petroleum) High quality transformer oil (25# 40#)

> Other Notes

The low voltage outlet terminal is tin-plated copper bar

High voltage outlet terminals are ring - type tin-plated bolts

Default no load regulation (can be customized load regulation) tap switch 5 or 7 adjustment

Transformer above 800KVA is equipped with gas relay protection, with oil temperature overheating alarm tripping protection, light gas alarm prompt, heavy gas tripping protection function

> Patent technology

Thanks to the patented technology of "ultra-low loss energy-saving power transformer" of Hengfengyou Electric, the material can be saved by 5%, and the loss of the transformer can be reduced by 10-20% compared with similar products in the market, which is more energy saving and environmental protection.

"Multi-layer brush type stacking end ring", patented technology, greatly improve the resistance to short circuit winding;

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 1000m, air temperature -25℃~40℃, humidity less than 90% (+25℃)

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

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

No explosion hazard, no corrosion of electrical components

- If the above normal operating conditions are exceeded, customers can customize the solution with our company

Three dimensional wound core transformer technical specifications

- Input voltage:6KV 6.6KV 10KV 11KV 13.8KV 15KV 20KV 22 KV 30KV 33KV 34.5 35KV

- Output voltage: 0.4kV 0.415KV

- Capacity: 30 kva-1000 kva

- Frequency: 50HZ/60HZ

- Remark: voltage, capacity, frequency, connection group and loss can be customized according to customer requirements

S11-M•RL series 30 KVA~ 1000KVA Three dimensional wound core oil immersed distribution transformer
Capacity(KVA)	Voltage combination			Vector GroupSymbol	NO-load loss（W）	Load loss（W）	NO-load current（%）	Short circuit impedance（%）
Capacity(KVA)	High pressure（KV）	High pressure tap range（%）	The low pressure（kV）	Vector GroupSymbol	NO-load loss（W）	Load loss（W）	NO-load current（%）	Short circuit impedance（%）
30 kva	6 6.3 10 10.5 11	±5 ±2×2.5	0.4 0.415 0.420 0.44	Dyn11 Yyn0	100	630/600	0.30	4.0
50 kva					130	910/870	0.24
80 kva					180	1310/1250	0.22
100 kva					200	1580/1500	0.21
125 kva					240	1890/1800	0.20
160 kva					280	2310/2200	0.19
200 kva					340	2730/2600	0.18
250 kva					400	3200/3050	0.17
315 kva					480	3830/3650	0.16
400 kva					570	4520/4300	0.16
500 kva					680	5410/5150	0.16
630 kva					810	6200	0.15	4.5
800 kva					980	7500	0.15
1000 kva					1150	10300	0.14

S13-M •RL series 30KVA ~ 1000KVA Three dimensional wound core oil immersed distribution transformer
capacity(kVA)	Voltage combination			Vector GroupSymbol	NO-load loss（W）	Load loss（W）	NO-load current（%）	Short circuit impedance（%）
capacity(kVA)	High pressure（kV）	High pressure tap range（%）	The low pressure（kV）	Vector GroupSymbol	NO-load loss（W）	Load loss（W）	NO-load current（%）	Short circuit impedance（%）
30 kva	6 6.3 6.6 10 10.5 11	±5 ±2×2.5	0.4 0.415 0.420 0.44	Dyn11 Yyn0	80	630/600	0.30	4.0
50 kva					100	900/870	0.24
80 kva					130	1310/1250	0.22
100 kva					150	1580/1500	0.21
125 kva					170	1890/1800	0.20
160 kva					200	2310/2200	0.19
200 kva					240	2730/2600	0.18
250 kva					290	3200/3050	0.17
315 kva					340	3830/3650	0.16
400 kva					410	4520/4300	0.16
500 kva					480	5410/5150	0.16
630 kva					570	6200	0.15	4.5
800 kva					700	7500	0.15
1000 kva					830	10300	0.14

S14-M •RL series 30KVA ~ 1000KVA Three dimensional wound core oil immersed distribution transformer
capacity(kVA)	Voltage combination			Vector GroupSymbol	NO-load loss（W）	Load loss（W）	NO-load current（%）	Short circuit impedance（%）
capacity(kVA)	High pressure（kV）	High pressure tap range（%）	The low pressure（kV）	Vector GroupSymbol	NO-load loss（W）	Load loss（W）	NO-load current（%）	Short circuit impedance（%）
30 kva	6 6.3 6.6 10 10.5 11	±5 ±2.5	0.4 0.415 0.420 0.44	Dyn11 Yyn0	80	505/480	0.30	4.0
50 kva					100	730/695	0.24
80 kva					130	1050/1000	0.22
100 kva					150	1260/1200	0.21
125 kva					170	1510/1440	0.20
160 kva					200	1850/1760	0.19
200 kva					240	2180/2080	0.18
250 kva					290	2560/2440	0.17
315 kva					340	3060/2920	0.16
400 kva					410	3610/3440	0.16
500 kva					480	4330/4120	0.16
630 kva					570	4960	0.15	4.5
800 kva					700	6000	0.15
1000 kva					830	8240	0.14

Ordering instructions

- Main parameters of transformer (voltage, capacity, loss and other main parameters)

- Transformer use environment (altitude, temperature, humidity, place, etc.)

- Other customized requirements (voltage, tap switch, color, oil pillow, etc.)

- The minimum order quantity is 1 set, global delivery within 7 days

- The normal delivery period is 30 days, with 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 price advantage

- Sufficient inventory, short delivery cycle, fast delivery worldwide

- Perfect after-sales service system, allowing customers to buy worry-free

- Welcome customers to visit the factory and provide OEM/ODM services

Three dimensional wound core transformer FAQ

What is a three-dimensional wound core transformer?
A three-dimensional wound core transformer is a type of transformer where the core is constructed by winding grain-oriented silicon steel strips in three spatial dimensions, improving magnetic flux distribution and efficiency.
How does a 3D wound core transformer differ from a traditional transformer?
Unlike traditional laminated core transformers, 3D wound core transformers have a continuous wound structure, reducing air gaps and energy losses while enhancing mechanical strength.
What are the main advantages of 3D wound core transformers?
Key benefits include higher efficiency, lower no-load losses, reduced noise levels, better mechanical stability, and improved thermal performance.
Where are three-dimensional wound core transformers commonly used?
They are widely used in power distribution networks, renewable energy systems, industrial applications, and high-efficiency electrical equipment.
Why do 3D wound core transformers have lower no-load losses?
The continuous winding of the core minimizes magnetic flux leakage and reduces eddy current losses, resulting in lower no-load power consumption.
Are three-dimensional wound core transformers more expensive than conventional transformers?
While the initial cost may be higher, the long-term savings from reduced energy losses and maintenance often justify the investment.
How does the 3D wound core design improve transformer efficiency?
The optimized magnetic path and reduced air gaps enhance flux distribution, lowering core losses and improving overall energy efficiency.
Can 3D wound core transformers handle high power loads?
Yes, their robust construction and efficient cooling properties make them suitable for high-power applications while maintaining reliability.
Do three-dimensional wound core transformers require special maintenance?
No, they generally require standard maintenance similar to conventional transformers, but their durable design may reduce long-term wear and tear.
Are 3D wound core transformers environmentally friendly?
Yes, their higher efficiency reduces energy waste, and some designs use eco-friendly materials, making them a sustainable choice for modern power systems.