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TSTY 20 MVA 20000 KVA Substation Transformer Cooper Aluminum Substation Transformer Manufacturer

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TSTY 20 MVA 20000 KVA Substation Transformer Cooper Aluminum Substation Transformer Manufacturer

In densely populated urban areas, 20 MVA substation transformers are often used as the main power distribution transformers.They step down the transmission voltage (e.g., 138 kV or 230 kV) to the medium distribution voltage (e.g., 13.8 kV or 34.5 kV).

• Capacity Spectrum: 15kVA to 31,500kVA configurations
• Certification Mastery: ISO 9001, IEC, SGS, Intertek, CCC, CE, BV, GOST compliant

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TSTY supported by a highly skilled technical team with 200 persons, offers extensive customization options to meet your specific requirements. Some of the customizable features include:

1. Standards and Rules; 2. K-Factor.; 3. Audible Sound; 4. Efficiency Value; 5. Bushing Layout; 6. Accessories Brand; 7. Impedance Value; 8. Standard Testing; 9. Special Environments

If you have other special requirements, please contact: sales@tstytransformer.com, and our multilingual team will supply free solution for you.

The 20 MVA substation transformer is designed for reliable voltage conversion in utility, industrial, and renewable power systems. Built to IEC 60076 or ANSI standards, it features high efficiency, low losses, and strong short-circuit resistance. Using ONAN/ONAF cooling, copper or aluminum windings, and high-grade insulation oil, it ensures stable performance and long service life.

Equipped with OLTC or OCTC for precise voltage regulation and smart protection devices, it supports voltages up to 110 kV/33 kV/11 kV. Ideal for substations, power plants, and grid connection projects, it combines durability, safety, and efficiency for demanding environments.

All products carry CE/IEC/SGS/BV/GOST certifications. Our $8M R&D center develops next-gen solutions.Our air natural cooling transformer series represents the pinnacle of power conversion technology, delivering unmatched performance, safety, and durability. Engineered for excellence, these transformers set industry benchmarks for reliability across global power applications.

110KV Three Phase Copper 100% Power Transformer
Rated Capacity(kVA)	No-load Loss(kW)	On-load Loss(kW)	Off-load Current	Short Circuit Impedance	Dimension (LxWxH) (mm)	Total Weight (kg)
6300	10	36.9	0.6%	10.5%	4540 x4350x4580	21100
8000	12	45	0.6%		4860x4400x4630	24600
10000	14.2	53.1	0.5%		4900x4450x4830	27900
12500	16.8	63	0.5%		5010x4500x4960	31600
16000	20	77	0.45%		5620x4520x5080	35600
20000	24	91.7	0.4%		5730x4550x5200	39800
25000	28.4	110.7	0.4%		5820x4590x5290	45200
31500	33.5	133.2	0.35%		5930x4820x5400	49600
40000	40.4	156.6	0.3%		6100x4930x5500	57100
50000	47	194.4	0.25%		6450x5050x5590	64700
63000	56.8	234	0.25%		6970x5190x5690	71800

220KV Three Phase Copper Power Transformer Main Technical parameters
Rated Capacity(kVA)	High Voltage(kV)	Connection Symbol	No-load Loss(kW)	On-load Loss(kW)	Off-load Current (%)
31500	220/230	YNd11	35	135	0.7
40000			41	157	0.7
50000			49	189	0.65
63000			58	220	0.65
75000			67	250	0.6
90000			77	288	0.55
120000			94	345	0.55
150000			112	405	0.5
160000			117	425	0.49
180000			128	459	0.46
240000			160	567	0.42

Spanning 250,000 in Henan, our smart factory leverages 5G automation to produce 3,000+ IEC/CE-certified substations annually. With 158 patents and 99% automation, we power projects across 80+ countries.

Q: Are you a factory or a trade company?

A: Integrated Manufacturing & Trading, OEM/ODM available.

Q: Our Advantage?

A: 30 years experience, Advanced production equipments, Stable quality, Fast delivery, Professional & good & Prompt service.Also some free parts can be provided.

Q: How long is your delivery time?

A: it is depends on your quantity,generally within 15-20 days upon receipt of the advance payment.

Q: What is your payment terms?

A : T/T, L/C,Visa Paypal ,Weatern Union for different circumstances.

Q: Do you have inspection procedure before shiping?

A: Yes,we do 100% QC inspection

Q: What certificates do you have？

A: CESGS ISOIEC StandardsGost Certificates.

Long-term strategic partnerships with DuPont, ABB, Siemens, etc.

Q:AS we knew, when we make order, some suppliers used lower material insted of high quality material products and send to us, how can i trust you?

A: we suggest clients to test the material after receiving goods. We aim to do long term business, not one times.

TSTYNICE transformers hold ISO 9001, IEC 60076, CE, GOST, SGS, and BV certifications, with 158 patents (20 inventions). Our CNAS-accredited lab ensures global compliance across 80+ markets.