Three-Phase Oil-Immersed Distribution Transformer

QH-Power’s UL-certified Three-Phase Oil-Immersed Transformer ensures reliable power for industrial and utility grids. Built in our advanced electrical equipment manufacturing factory, its sealed corrugated tank design prevents leaks and extends service life. Offering high efficiency and low loss, it is the durable, cost-effective solution for heavy-duty power distribution.
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Product Details

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Product parameters


MODEL

RATED CAPACITY

(KVA)

CONNECTION GROUP SYMBOL

VOLTAGE COMBINATION (kV)

NO-LOAD LOSS

(W)

DY LOAD LOSS

(W)

YY LOAD LOSS

(W)

NO-LOAD CURRENT

(%)

SHORT-CIRCUIT IMPEDANCE

(%)

HIGH VOLTAGE

TAP RANGE

LOW VOLTAGE

S13-M-30

30

Yyn0

Dyn11

10

6.3

6

±5%

±2x2.5%

0.4

80

630

600

1.5

4

S13-M-50

50

100

910

870

1.3

S13-M-63

63

110

1090

1040

1.2

S13-M-80

80

130

1310

1250

1.2

S13-M-100

100

150

1580

1500

1.1

S13-M-125

125

170

1890

1800

1.1

S13-M-160

160

200

2310

2200

1

S13-M-200

200

240

2730

2600

1

S13-M-250

250

290

3200

3050

0.9

S13-M-315

315

340

3830

3650

0.9

S13-M-400

400

410

4520

4300

0.8

S13-M-500

500

480

5410

5150

0.8

S13-M-630

630

570

6200

0.6

4.5

S13-M-800

800

700

7500

0.6

S13-M-100

1000

830

10300

0.6

S13-M-1250

1250

970

12000

0.5

S13-M-1600

1600

1170

14500

0.5

S13-M-2000

2000

1550

18300

0.4

5

S13-M-2500

2500

1830

21200

0.4


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Factory strength & certification

 

Jinan Qinghe Electrical Co., Ltd. was established in 1992 as a joint-stock company resulting from the restructuring of Jinan Qinghe Special Transformer Factory. Its headquarters is located in the e-center of Luneng Lingxiu City, Jinan. The registered capital is 104.6 million yuan. It is a comprehensive high-tech enterprise specializing in the research and development of intelligent electrical technology, the manufacturing of power transmission and distribution equipment, the general contracting and maintenance services for power engineering construction, and other related services. The company has obtained ISO 9001 quality system certification, ISO 14001 environmental management system certification, OHSAS 18001 occupational health and safety management system certification, and national compulsory product certification (CCC). It is a regular supplier to State Grid and Southern Grid.

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-F A Q-

 

Q: What is your company's background and manufacturing experience?

A: We are a professional transformer manufacturer with over 30 years of R&D, production, and OEM/ODM experience. Supported by a mature industrial ecosystem and extensive technical expertise, we provide reliable solutions for diverse needs.

 

Q: As a transformer supplier, what are your core strengths?

A: Our strengths are built on 30+ years of industry experience, 200+ technical patents, rigorous quality control, flexible customization, and a proven record of reliable delivery. This is all supported by a 12-month warranty and responsive after-sales service. Additionally, with manufacturing facilities in both China and the U.S., we ensure timely global supply and efficient logistics support.

 

Q: Which quality, safety, and international standards do your products comply with?

A: Our products are UL-certified for the North American market and comply fully with key international standards, including ISO 9001, ISO 14001, ISO 45001 (replacing OHSAS 18001), IEC, and GB/T. This ensures global compatibility and compliance for projects worldwide.

 

Q: Is Factory Acceptance Test (FAT) available, and can it be customized? 

A: Yes, we actively support and provide flexible customization for Factory Acceptance Tests (FAT). Each product undergoes a series of rigorous factory inspections before shipment, including insulation resistance tests, temperature rise tests, and other key performance verifications. This ensures full compliance with your quality and project specifications.


Q: What is the scope of your main product lines?

A: We specialize in manufacturing oil-immersed transformers, dry-type transformers, high- and low-voltage switchgear, and a range of special-purpose transformers—including amorphous alloy and rectifier types. Our products serve diverse applications, from power grids to renewable energy projects.


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