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110kv Oil-immersed Power Transformer

  • Brand: HENGFENGYOU
  • Series: SFZ
  • USES: Power Transformer
  • Country of origin: China
  • Terms of payment: L/C, T/T, Western Union, Paypal, Money Gram
  • Certification: ISO9001、CB
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110kv Power Transformer Overview

Against the backdrop of global electricity demand growth, 110kV three-phase oil immersed transformers are widely used in various fields such as State Grid, industrial and mining enterprises, regional substations, power plant boosting stations, and public facilities. They are mainly used for boosting or reducing voltage, achieving efficient transmission and distribution of electrical energy. The maximum capacity can reach 200mva. High reliability operational verification in over 50 countries and regions worldwide; It has been sold to countries and regions such as Tanzania, Zimbabwe, Ghana, South Africa, Kenya, Zambia, Sudan, Libya, Congo, United Arab Emirates, Saudi Arabia, Iraq, Syria, Bangladesh, etc.
 

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110kv Power Transformer Advantage

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 a 110kV transformer can exceed 99% and meet the European 2015/2014/548/EC ecodesign Tier 2 energy efficiency regulations.
4. Successful case verification: Accumulated a large amount of 110kV project experience in global power grid transformation, new energy access (such as photovoltaic booster stations) and other fields, verified the stability of products under complex working conditions, and designed a lifespan of more than 30 years.
5. Environmental Protection and Sustainable Development: Adopting FR3 environmentally friendly insulation oil and recyclable materials to reduce carbon footprint, in line with the "dual carbon" policy orientation.
6. Delivery capability: Normal 90 days; The shortest delivery cycle is 50 days.

 

110kv Power Transformer parameters

S18-110kV double winding non excitation voltage regulating power transformer
额定容量
Rated capacity
(kva)		 电压组合及分接范围
Voltage ratio(kv)		 联结组
Connection symbol		 空载损耗
No-load loss
(kw)		 空载电流
No-load current
(%)		 负载损耗
Full-load loss
(kw)		 短路抗阻
Impedance(%)
高压
HV		 高压分接范围
MV Tapping Range		 低压
LV
6300 110
121		 ±2×2.5% 6.3
6.6 10.5
11		 YNd11 9.3 0.60  36 10.5
8000 11.2 0.60  45
10000 13.2 0.55  53
12500 15.6 0.55  63
16000 18.8 0.50  77
20000 22 0.50  93
25000 26 0.45  110
31500 30.8 0.45  133
40000 36.8 0.40  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



S18-110kV dual winding on load voltage regulating power transformer
额定容量
Rated capacity
(kva)		 电压组合及分接范围
Voltage ratio(kv)		 联结组
Connection symbol		 空载损耗
No-load loss
(kw)		 空载电流
No-load current
(%)		 负载损耗
Full-load loss
(kw)		 短路抗阻
Impedance(%)
高压
HV		 高压分接范围
MV Tapping Range		 低压
LV
6300 110
121		 ±8×1.25% 6.3
6.6 10.5
11		 YNd11 10 0.60  36 10.5
8000 12 0.60  45
10000 14.2 0.55  53
12500 16.8 0.55  63
16000 20.2 0.50  77
20000 24 0.50  93
25000 28.4 0.45  110
31500 33.8 0.45  133
40000 40.4 0.40  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



S18-110kv Three winding Unexcited Voltage Regulating Power Transformer
18- 电压组合及分接范围
Voltage ratio(kv)		 联结组
Connection symbol		 空载损耗
No-load loss
(kw)		 空载电流
No-load current
(%)		 负载损耗
Full-load loss
(kw)		 短路抗阻
Impedance(%)
高压
HV		 中压
MV		 低压
LV		 升压变
step-up		 降压变
step-down
6300 110
±8×1.25%		 35
37
38.5
±2×2.5%
or
±5% 		 6.3
6.6 10.5
11		 YNyn0d11 11.2 0.60  47 高-中
H-M
10.5
高-低
H-L
17-18
中-低
M-L
6.5		 高-中
H-M
17-18
高-低
H-L
10.5
中-低
M-L
6.5
8000 13.3 0.60  56
10000 15.8 0.55  66
12500 18.4 0.55  78
16000 22.4 0.50  95
20000 26.4 0.50  112
25000 30.8 0.45  133
31500 36.8 0.45  157
40000 43.6 0.40  189
50000 52 0.4 225
63000 61.6 0.35 270




S18-110kV three winding on load voltage regulating power transformer
额定容量
Rated capacity
(kva)		 电压组合及分接范围
Voltage ratio(kv)		 联结组
Connection symbol		 空载损耗
No-load loss
(kw)		 空载电流
No-load current
(%)		 负载损耗
Full-load loss
(kw)		 短路抗阻
Impedance(%)
高压
HV		 中压
MV		 低压
LV		 升压变
step-up		 降压变
step-down
6300 110
±8×1.25%		 35
37
38.5
±2×2.5%
or
±5% 		 6.3
6.6 10.5
11		 YNyn0d11 12 0.60  47 高-中
H-M
10.5
高-低
H-L
17-18
中-低
M-L
6.5		 高-中
H-M
17-18
高-低
H-L
10.5
中-低
M-L
6.5
8000 14.4 0.60  56
10000 17.1 0.55  66
12500 20.2 0.55  78
16000 24.2 0.50  95
20000 28.6 0.50  112
25000 33.8 0.45  133
31500 40.2 0.45  157
40000 48.2 0.40  189
50000 56.9 0.4 225
63000 67.7 0.35 270


110kv Power Transformer Shipment



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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.

 

110kv Power Transformer FAQ

Q1.What is a 110kV power main transformer?

The 110kV main transformer is the core equipment in high-voltage power grids, used to reduce the 110kV transmission voltage to medium voltage levels such as 10kV/35kV, for use by regional distribution networks or industrial users. Its structure includes iron core, winding, oil tank, cooling system, and protective device, with a capacity range typically from 20MVA to 240MVA.
 
Q2.What are the main application scenarios of 110kV power transformers?
*Power grid hub station: connecting high-voltage transmission network and regional distribution network;
*Large industrial enterprises, such as steel mills, chemical plants, etc., require high-voltage direct power supply for electricity scenarios;
*New energy power stations: boosting and grid connection of wind farms and photovoltaic power stations;
*Urban substation: providing high reliability power supply for densely populated areas.
 
Q3.What is the difference between the three winding and double winding of a 110kV transformer?
*Double winding: only includes two sets of windings for high voltage (110kV) and low voltage (such as 10kV), with a simple structure, suitable for single voltage conversion;
*Three windings: including high voltage (110kV) and two sets of medium voltage windings with different voltages (such as 35kV and 10kV), capable of supplying power to multiple voltage levels simultaneously, suitable for complex power grid nodes, but with high cost.
 
Q4.What are the differences in the selection of tap changers (MR, ABB, Shanghai Huaming)?
Brand Features
MR German brand, high reliability, long lifespan (over 100000 operations), high price, suitable for high-end projects.
ABB has balanced comprehensive performance, a complete global service network, and is compatible with intelligent control systems.
Shanghai Huaming is a mainstream domestic brand with high cost-effectiveness and fast after-sales response, but its mechanical lifespan (about 50000 cycles) is slightly lower than that of imports.
Suggestion: Based on budget, reliability requirements, and operational capabilities, imported brands are suitable for harsh environments, while domestic brands are suitable for cost sensitive projects.
 
Q5.What is the delivery cycle for 110kV power transformers?
*Standard model: 3 months (including design, production, and testing);
*Customized model: 4-6 months (such as special cooling methods, high impedance requirements, etc.);
*Urgent orders: can be shortened to 2 months (subject to urgent fees and affected by raw material supply).
 
Q6.What is the design lifespan of a 110kV power transformer in years?
*Theoretical lifespan: over 30 years (based on IEC standards);
*Actual lifespan: usually 50 years, significantly affected by load rate, maintenance level, and environmental factors such as humidity and pollution. Key to extending lifespan: regular oil chromatography analysis, control winding temperature ≤ 65 ℃, and avoid long-term overload.
 
Q7.What are the warranty terms for 110kV power transformers?
*Warranty period: usually 12-36 months after leaving the factory (subject to the contract);
*Scope: Includes manufacturing defects (such as winding short circuits, iron core failures), except for human damage, natural disasters, etc;
*Special terms: Fragile parts such as tap changers and bushings may have a separate warranty period (such as 1 year) agreed upon.
 
Q8.What are the after-sales services for 110kV power transformers?
*Basic services: installation guidance, debugging support, operation training;
*Regular maintenance: oil testing, preventive testing, status assessment reports;
*Emergency response: on-site troubleshooting (promised to arrive within 72 hours);
*Upgrade and renovation: Capacity increase, noise reduction, and intelligent transformation (installation of online monitoring system).
 


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