


Technical Description
Rated Power: up to 300MVA
Primary Voltage: up to 242kV
Secondary Voltages: up to 69kV
Cooling Type: ONAN/ONAF
Insulation oil: mineral fluids or MIDEL ester fluids
35kV 630kV-A31500kVA three-phase double-winding no excitation regulating power transformer | ||||||||
Rated capacity (kVA) | Voltage ratio and tap range (kV) HV No load loss(kW) LV | Connection Symbol | No-load loss (kW) | Full-load loss (kW) | No-load current (%) | mpedance (%) | ||
630 | 35 | ±2×2.5 ±5 | 3.15 6.3 10.5 | Yd11 | 0.83 | 7.86 | 0.65 | 6.5 |
800 | 0.98 | 9.40 | 0.65 | |||||
1000 | 1.15 | 11.5 | 0.65 | |||||
1250 | 1.40 | 13.9 | 0.55 | |||||
1600 | 1.69 | 16.6 | 0.45 | |||||
2000 | 2.17 | 18.3 | 0.45 | |||||
2500 | 2.56 | 19.6 | 0.45 | |||||
3150 | 35~38.5 | ±2×2.5 ±5 | 3.15 6.3 10.5 | 3.04 | 23.0 | 0.45 | 7.0 | |
4000 | 3.61 | 27.3 | 0.45 | |||||
5000 | 4.32 | 31.3 | 0.45 | |||||
6300 | 5.24 | 35.0 | 0.45 | 8.0 | ||||
8000 | 35~38.5 | ±2×2.5 | 3.15 3.3 6.3 6.6 10.5 | Ynd11 | 7.20 | 38.4 | 0.35 | |
10000 | 8.70 | 45.3 | 0.35 | |||||
12500 | 10.0 | 53.8 | 0.30 | |||||
16000 | 12.1 | 65.8 | 0.30 | |||||
20000 | 14.4 | 79.5 | 0.30 | |||||
25000 | 17.0 | 94.0 | 0.25 | 10.0 | ||||
31500 | 20.2 | 112 | 0.25 |
110kV Double-winding no-excitation regulating power transformer | |||||||
Rated capacity (kVA) | Voltage ratio and tap range(kV) | Connection Symbol | No-load loss (kW) | Full-load loss (kW) | No-load current (%) | lmpedance (%) | |
HV | LV | ||||||
6300 | 110 115 121 ± 2×2.5% | 6.3 6.6 10.5 | Ynd11 | 7.4 | 35.0 | 0.62 | 10.5 |
8000 | 8.9 | 42.0 | 0.62 | ||||
10000 | 10.5 | 50.0 | 0.58 | ||||
12500 | 12.4 | 59.0 | 0.58 | ||||
16000 | 15.0 | 73.0 | 0.54 | ||||
20000 | 17.6 | 88.0 | 0.54 | ||||
25000 | 20.8 | 104.0 | 0.50 | ||||
31500 | 24.6 | 123.0 | 0.48 | ||||
40000 | 29.4 | 148.0 | 0.45 | ||||
50000 | 35.2 | 175.0 | 0.42 | ||||
63000 | 41.6 | 208.0 | 0.38 | ||||
75000 | 13.8 15.75 18 21 | 47.2 | 236.0 | 0.33 | 12~14 | ||
90000 | 54.4 | 272.0 | 0.30 | ||||
120000 | 67.8 | 337.0 | 0.27 | ||||
150000 | 80.1 | 399.0 | 0.24 | ||||
180000 | 90.0 | 457.0 | 0.20 |
220kV Double-winding Power Transformers with Off-circuit Tap Changer | |||||||
Rated capacity (kVA) | Voltage ratio and tap range (kV) | Connection Symbol | No-load loss (kW) | Full-load loss (kW) | mpedance (%) | No-load current (%) | |
HV | LV | ||||||
31500 | 220 242±2x2.5% | 6.3 6.6 10.5 11 | YNd11 | 35 | 135 | 12~14 | 0.70 |
40000 | 41 | 157 | 0.70 | ||||
50000 | 49 | 189 | 0.65 | ||||
63000 | 58 | 220 | 0.65 | ||||
75000 | 10.5 11 13.8 | 67 | 250 | 0.60 | |||
90000 | 77 | 288 | 0.55 | ||||
120000 | 94 | 345 | 0.55 | ||||
150000 | 11;13.8; 15.75;20 | 112 | 405 | 0.50 | |||
180000 | 128 | 459 | 0.46 | ||||
240000 | 160 | 567 | 0.42 | ||||
300000 | 15.75; 18;20 | 189 | 675 | 0.38 | |||
360000 | 217 | 774 | 0.38 |
Power Transformer Applications:
• 35kV transformer is generally applicable to the distributionline at present, the 110kV~550kV transformer is suitable forthe transmission line project, it can be used as a step-uptransformer or a step-down transformer, there are also manylarge power enterprises, which use high voltage transformersas aux transformers, which makes the application field of thistransformer much wider, such as various power generationprojects, railway engineering, electrical power engineering forlarge enterprises and so on.
Power Transformer Features:
• low loss • low noise • low temperature rise • high resistance to short-circuit capacity • low partial discharge,extend transformer service life
Power Transformer Advantage:
• KERUN combines its extensive experience and incomparable expertise in power transformers industry with it's unique Electric Utility knowledge and experience to offer high quality services to a broad range of clients.
• KERUN power transformer is based on ANSI, UL,IEEE, AS, as well as NEMA standards for design and production. The capacity can reach 300mva.
• KERUN power transformers are designed and optimized by absorbing and utilizing advanced technologies domestically and abroad, and feature low partial discharge, low loss, low noise, lightweight, and high reliability. Its excellent performance has won high praise from users and relevant experts. This product has the characteristics of stability, economy, and environmental protection, and is suitable for power plants, substations, large industrial and mineralization enterprises, etc..
PowerTransformer Manufacturers:
KERUN engineers have 40 years of experience in the transformer industry and have accumulated a wealth of experience in participating in different projects in various countries. Based on project cooperation cases, KERUN can help you analyze the types of transformers you need in project construction and provide complete power distribution and other solutions.




A:KERUN is a company in growth. We have reached many of our goals, and established solid marketing foundation in many countries.
Q:Are you a manufacturer or a trading company?
A:We are a professional transformer manufacturer with more than 20 year's experience.Support OEM&ODM.
Q:Which markets do you mostly export to?
A:We are exporting to more than 20 countries in South America, North America, Europe, Middle East, Africa and so on.
Q:What certificates and standards do you have?
A:ISO9001-2008, OHSAS 18001:2007, ISO4001:2004L certificates. A:IEC, ANSI, KEMA, GOST standard.
Q:How long is your delivery time?
A:After determining the plan, we will complete production and shipping within 20 days. It mainly depends on the quantity.
Q:What is the standard of package?
A:Our nomal package are divided into three types:wooden pallets, wooden frames, and wooden boxes.Also it can be customized.
Q:What currencies and payment Type do you support?
A:Payment Currency:USD,CNY.
Payment Type:T/T,L/C.
Q:Why choose KERUN?
A:After comparing the quality, delivery and price of the same products, believe you will choose KERUN.