66kv Series Oil-Immersed Power Transformer

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio
• Phase: Three
• Model NO.: SZ11-31500/110
• Usage: Power Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Rated Capacity: 63000kVA
• Hv: 110kv/132kv
• LV: 6.3kv~20kv
• Vector Group: Ynd11
• Transport Package: According to Client′ S
• Specification: As manufacturer′ s design
• Trademark: HZEC
• Origin: China
• HS Code: 8504232100
• Production Capacity: 25/ Quarter

Product Description

Product Description

110kV Power Transformer The 110kV transformer is a high-voltage oil-immersed transformer with a core-type structure. It can be classified by phase number into single-phase transformers and three-phase transformers; by voltage regulation method into on-load tap-changing transformers and no-load tap-changing transformers; by winding coupling method into power transformers and autotransformers; by the number of windings into double-winding, three-winding, and three-winding plus balance winding transformers. Additionally, it includes special types such as split transformers and combined transformers. The product is designed according to IEC international standards, IEEE standards, and current national standards.
Main Features

Low Noise: Reduces noise pollution to the environment.
Low Partial Discharge: Ensures stable and reliable transformer operation.
Low Temperature Rise: Provides strong overload capacity.
Low Loss: Optimizes energy structure.
Leakage-Free: Ensures high sealing performance of the transformer.
Maintenance-Free: Reduces customer maintenance costs.
High Impedance: Offers high short-circuit resistance, providing transformer safety.
Smart Components: Incorporates intelligent substation design technolog 

Company Profile

Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable transformer manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations and high and low voltage complete sets of equipment.The equipment put into production and operation of the project advocates energy saving, intelligence, information and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center,with 71 utility model patents and 15 invention patents.With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC Products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa and other regions, covering more than 40 countries.

Product Details

Their main features include:
1. Low noise, reducing noise pollution to the environment;
2. Low partial discharge, ensuring stable and reliable operation of the transformer;
3. Low temperature rise, with strong overloading capacity;
4. Low loss, optimizing the energy structure;
5. No leakage, with high sealing performance of the transformer;
6. Maintenance-free, reducing the customer's maintenance costs;
7. High impedance, with high short-circuit resistance, enhancing the safety performance of the transformer;
8. Utilization of intelligent components, incorporating intelligent power station design technology.

Detailed Photos

Main functions and characters:

110kV Double-winding Power Transformers withOff-circuit Tap Changer

Rated capacity (kVA)	Voltageratic (kV)			Connection Symbol	No-load loss (kW)	No-load current (%)	Full-load loss (kW)	Impedance (%)
	HV	HV Tapping Range	LV
6300	110 121	±2×2.5%	6.3 6.6 10.5 11	YNd11	9.3	0.6	36	10.5
8000					11.2	0.6	45
10000					13.2	0.55	53
12500					15.6	0.55	63
16000					18.8	0.5	77
20000					22	0.5	93
25000					26	0.45	110
31500					30.8	0.45	133
40000					36.8	0.4	156
50000					44	0.4	194
63000					52	0.35	234
75000			13.8   15.75     18     20		59	0.35	278	12~14
90000					68	0.3	320
120000					84.8	0.3	397
150000					100.2	0.3	472
180000					112.5	0.25	532

110kV Double-winding Power Transformers with On-load Tap-changer

Rated capacity (kVA)	Voltage ratio (kV)			Connection Symbol	No-load loss (kW)	No-load current (%)	Full-load loss (kW)	Impedance (%)
	HV	HV Tapping Range	LV
6300	110 121	±8×1.25%	6.3 6.6 10.5 11	YNd11	10	0.6	36	10.5
8000					12	0.6	45
10000					14.2	0.55	53
12500					16.8	0.55	63
16000					20.2	0.5	77
20000					24	0.5	93
25000					28.4	0.45	110
31500					33.8	0.45	133
40000					40.4	0.4	156
50000					47.8	0.4	194
63000					56.8	0.35	234
75000					63.4	0.35	278
90000					73.1	0.3	320
120000					91.2	0.3	397

110kV Three-winding Power Transformers with Off-circuit Tap Changer

Rated capacity       (kVA)		Voltage  ratio   (kV)		Connection        Symbol	No-load loss (kW)	No-load current (%)	Full-load loss (kW)	Impedance (%)
	HV	MV	LV					step-down	step-up
6300	110 121 ±2× 2.5%	35 37 38.5 ±2×2.5% or ±5%	6.3 6.6 10.5 11		11.2	0.6	47	H-M 10.5 H-L 17~18 M-L 6.5	H-M 17-18 H-L 10.5 M-L 6.5
8000					13.3	0.6	56
10000					15.8	0.55	66
12500					18.4	0.55	78
16000					22.4	0.5	95
20000				YNyn0d11	26.4	0.5	112
25000					30.8	0.45	133
31500					36.8	0.45	157
40000					43.6	0.4	189
50000					52	0.4	225
63000					61.6	0.35	270

Service environment:
1.Device types: outdoor type
2.Type of Voltage Regulation: Off-circuit or On-Ioad
3.Tapping Range: ±5 % ±2x2.5 % ±4x2.5 %
4.Frequency: 50Hz or 60Hz
5.Phases: Three or single
6.Connection Symbol: Dyn11,Yyn0 ( or as requested)
7.Short- circuit Impedance: Standard Impedance
8.Altiude is not exceeding 1000m,ambient temperature not exceeding 40OC. If it can't meet such conditions,we will modulate parameters in accordance with standard.

Fields of application

It is used to raise the power generated by the power plant to 110 kV high voltage for efficient transmission over long distances. In substations, they regulate the voltage to ensure a stable supply of electricity to industrial, commercial and residential customers. At the same time, in power plants, these transformers raise the power to a voltage level suitable for long-distance transmission, ensuring the stable operation of the grid.

Customer Case

After Sales Service

1.Our company provides you with project design and process design, and designs and manufactures products according to your equipment purchase plan and specific needs. And train technical and operating personnel for you.

2.The newly purchased products are provided with online assistance for installation and debugging. The products are under the lifelong service system. If problems occur in normal use, we will provide solutions within one working day after receiving user's feedback. We will try our best to get the product up and running as soon as possible. And there are regular visits by professional technicians to ensure the long-term, safe and reliable use of our products.

3.We use quality authentic materials, process and manufacture in strict compliance with ISO9001:2000 international quality management to ensure the quality of excellence and the smooth installation!

Packaging & Shipping

Production Equipment

Certificate