Oil-immersed Transformer

10KV Fully Sealed Three-phase Oil-immersed Power Distribution Transformer

Brand: HENGFENGYOU
Series: S-M
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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Global Procurement Guide for 10kv Oil immersed Transformers
I.10kv Oil immersed Transformer Induction

Against the backdrop of global electricity demand growth, 10kV three-phase oil immersed transformers are widely used in rural power grids, industry, commerce, new energy, public facilities, and other fields. High reliability operational verification in over 50 countries and regions worldwide; Already sold to countries and regions such as East Asia, Central Asia, Southeast Asia, South Asia, etc

10KV Fully Sealed Three-phase Oil-immersed Power Distribution Transformer（S11-M Series）

II.10kv Oil immersed Transformer Standar & Certifaication

1. Standards: GB, IEC, GOST, EN, NF, ANSI/IEEE (customizable according to customer standards)

2. Certification: ISO、CE、IEC、SABS、COC、CSA、UL

3. Efficiency: The efficiency of an 10kV three-phase oil immersed transformer can exceed 99%, which can meet the European 2015/2014/548/EC ecodesign Tier 2 energy efficiency regulations.

4. Maintenance free: IP65 protection level, dustproof and moisture-proof, maintenance free, designed for a lifespan of over 25 years.

5. Environmental protection and sustainable development: FR3 vegetable oil can be selected.

6. Overload capacity: Copper coil 10kv transformer allows short-term overload to 150% of rated capacity for no more than 2 hours, but requires monitoring of oil temperature (≤ 95 ℃).

III.10kv Oil immersed Transformer Type

For HENGFENGYOU ELECTRIC, a 10kv transformer can be a three-phase oil immersed transformer, a column mounted three-phase oil immersed transformer, or a three-phase pad mounted transformer. These types of transformers have the same principle, but their structures are different, and different types of transformers have different applications. HENGFENGYOU ELECTRIC provides you with the most ideal solution.

10kV three-phase oil immersed transformer (rated voltage 6kV-35kV)

Install a three-phase oil immersed transformer (rated voltage 2.4kv-34.5kv) on an 10kV column

10kV three-phase pad mounted transformer (rated voltage 2.4kv-34.5kv)

IV.10kv Oil immersed Transformer Technical Specifications

- Input voltage: 10kV

- Output voltage: 0.4kV 0.415 kv 0.420kv 0.430kv 0.440kv
- Capacity: 30-2500 kva
- Frequency: 50/60 HZ
- Remark: voltage, capacity, frequency, connection group and loss can be customized according to customer requirements

S11 额定容量Capacity	额定电压及分接范围Rated voltage&Off-load tapping			联结组标号 Vector GroupSymbol	空载损耗 NO-load loss（W）	负载损耗 Load loss（W）	空载电流 NO-load current（%）	短路阻抗Short circuit impedance(%)
	高压 H.V(kv)	高压分接范围 High pressure Tap range（%）	低压 L.V(kv)


30 kva	11 10.5 10 6.3 6	±5% ±2x2.5%	0.4 0.415 0.420 0.430 0.440	Dyn11 Yyn0	100	630/600	1.5	4
50 kva					130	910/870	1.3	4
63 kva					150	1090/1040	1.2	4
80 kva					180	1310/1250	1.2	4
100 kva					200	1580/1500	1.1	4
125 kva					240	1890/1800	1.1	4
160 kva					280	2310/2200	1	4
200 kva					340	2730/2600	1	4
250 kva					400	3200/3050	0.9	4
300 kva					480	3830/3650	0.9	4
400 kva					570	4520/4300	0.8	4
500 kva					680	5410/5150	0.8	4
630 kva					810	6200	0.6	4.5
800 kva					980	7500	0.6	4.5
1000 kva					1150	10300	0.6	4.5
1250 kva					1360	12000	0.5	4.5
1600 kva					1640	14500	0.5	4.5
2000 kva					1940	18300	0.4	5
2500 kva					2290	21200	0.4	5

V.10kv Oil immersed Transformer Case show

Grow business with Hengfengyou

Our goal is to become the world's leading manufacturer of electrical equipment. The business, experience and technology accumulated over the years have benefited customers in more than 50 countries around the world. Once our customers establish a cooperative relationship, they are long-term trusted customers, because Hengfengyou always insists on providing you with our best electrical products and services.

VI.10kv Oil immersed Transformer FAQ

What is an 10kV three-phase oil immersed transformer?

A three-phase oil immersed transformer is a power transformer that is cooled and insulated by insulating oil. It is designed for use in three-phase AC power systems and can convert high voltage electrical energy into low voltage (such as 10kV/400V). It is widely used in industrial, commercial, and power grid distribution.

What are the typical application scenarios?

*Voltage conversion of urban distribution network (10kV → 400V);

*Power distribution in industrial plants such as mines and petrochemicals;

*Grid connection of renewable energy power plants (such as wind farms);

*Hospitals, data centers, and other places that require high reliability power supply.

What is the rated capacity range?

The common capacity ranges from 25kVA to 10MVA, with the 100kVA to 2000kVA models of 10kV/400V being the most widely used, depending on the load requirements.

What is the difference in maintenance cycle between 10kV dry-type and oil immersed transformers?

Dry type: Dust removal inspection every 2-3 years; Oil immersed: Check the oil level, oil quality (pressure resistance value, acidity), sealing, and radiator cleaning once a year; Comprehensive oil sample testing every 3-5 years (such as medium loss and moisture content).

How to choose between three-phase oil immersed transformer and dry-type transformer?

-10kV oil immersed transformers are suitable for outdoor, high-capacity, and high load scenarios, with low cost but requiring regular maintenance;

-10kV dry-type transformer: used in indoor environments with high fire protection requirements (such as shopping malls and subways), maintenance free but expensive.

How to determine whether a transformer needs to change oil or filter oil?

-Oil quality testing: Regularly test the breakdown voltage (should be ≥ 30kV), water content (≤ 20ppm), and acid value of the oil;

-Cloudy oil color: The oil becomes darker or there is an increase in suspended matter;

-Decreased insulation performance: determined by withstand voltage test.

What are the reasons for the abnormal temperature rise during operation?

-Long term overload;

-Cooling system malfunction (fan/oil pump shutdown);

-Oil circuit blockage or insufficient oil volume;

-Internal short circuit or poor contact.

How to deal with oil leakage in oil immersed transformers?

-Slight oil leakage: tighten bolts or replace gaskets;

-Serious oil leakage: Stop immediately, drain the oil and repair or replace components;