1 / 5
CEMarked CEMarked
Capacity: 2000KVA-240MVA, 30MVA, 63MVA, 75MVA, 120MVA, 150MVA
Voltage: 66KV, 110KV, 132KV, 220KV
Series: Main Power Transformer
Application: Power plant step-up substations, hub substations, and main step-down substations for large users
A power transformer is a core component of a power system, responsible for voltage transformation and power transmission. It is typically installed in power plant step-up substations, hub substations, and main step-down substations serving large user bases, where it transforms the generator output voltage or the voltage of the upstream power grid to a level suitable for downstream transmission or distribution. TSTY offers 66kV, 110kV, and 220kV power transformers.
66kV transformers belong to the category of high-voltage power transformers and are mainly used in power transmission and distribution networks at the 66kV voltage level. Their rated frequency is 50Hz, and their capacity ranges from 2000kVA to 100MVA.
In terms of capacity level, 66kV transformers mainly serve the following roles:
• Below 30MVA: Main transformers for small and medium-sized substations, main step-down transformers for industrial users.
• 30MVA~63MVA: Main transformers for urban substations, main step-down transformers for large industrial users.
• 63MVA~75MVA: Main transformers for large substations, main transformers for new energy step-up substations.
| Rated capacity (kVA) |
High Voltage (kV) |
Tap range | Low Voltage (kV) |
Connection Group | No-load loss (kW) |
Load loss (kW) |
No-load current (%) |
Impedance voltage (%) |
|---|---|---|---|---|---|---|---|---|
| 2000 | 60 63 66 | ±8×1.25% | 6.3 6.6 10.5 11 | YNd11 | 1.8 | 14.7 | 0.3 | 8.0 |
| 2500 | 2.1 | 17.4 | 0.3 | |||||
| 3150 | 2.4 | 20.7 | 0.3 | |||||
| 4000 | 3.1 | 24.6 | 0.3 | |||||
| 5000 | 3.7 | 27.6 | 0.3 | |||||
| 6300 | 4.4 | 30.8 | 0.3 | 9.0 | ||||
| 8000 | 5.3 | 36.5 | 0.3 | |||||
| 10000 | 6.2 | 43.0 | 0.3 | |||||
| 12500 | 7.4 | 51.1 | 0.3 | |||||
| 16000 | 8.9 | 62.8 | 0.3 | |||||
| 20000 | 10.6 | 76.1 | 0.3 | |||||
| 25000 | 12.5 | 90.0 | 0.3 | |||||
| 31500 | 14.8 | 108.0 | 0.3 | |||||
| 40000 | 17.7 | 126.9 | 0.3 | |||||
| 50000 | 20.9 | 150.3 | 0.3 | |||||
| 63000 | 24.7 | 178.2 | 0.3 | |||||
| 75000 | 28.2 | 203.1 | 0.3 | |||||
| 90000 | 32.3 | 232.9 | 0.3 | |||||
| 100000 | 34.9 | 252.0 | 0.3 |
The 110kV main transformer is the most common voltage level in urban power grids and industrial user substations, and it also serves as a watershed in the power system's transmission and distribution network. Common 110kV power transformer capacities include: 6300kVA, 8000kVA, 10000kVA, 12500kVA, 16000kVA, 20000kVA, 25000kVA, 31500kVA, 40000kVA, 50000kVA, and 63000kVA.
The 220kV main transformer is the core equipment of a regional power grid, widely used in urban hub substations, large industrial users, and new energy booster stations. Common single-unit main transformer capacities in power systems are 120MVA, 150MVA, 180MVA, and 240MVA.
With over 30 years of experience, we are a reliable manufacturer of power equipment. Over 250,000 square meters with 5G-enabled intelligent production lines, Ensure capacity, on-time delivery, and high quality.
We serve clients in over 80 countries, providing customized solutions for state grid in multiple regions. And has established agency offices in more than 14 countries.
TSTY has passed the UL, CE, IEC, EAC, ISO 9001, ISO 14001, ISO45001, Gost Certified, can proved the products success and quality.
TSTY has established agency offices in more than 14 countries, We can provide the most suitable power solutions for customers worldwide.
With a local team, we offer nearby service support and 24/7 response — lowering procurement costs by 30%, avoiding 90% of compliance risks, and reducing lifecycle energy use by 20%. We also ensure product authenticity, with technical specs and materials fully matching commitments.
A: TSTY supplies power transformers across voltage classes of 66kV, 110kV, 132kV, and 220kV, offering extensive capacities from 2000kVA up to 240MVA to accommodate diverse power grid configurations.
A: All products are engineered in compliance with international requirements and are verified with UL, CE, IEC, EAC, Gost, and ISO 9001/14001/45001 management certifications.
A: Our main transformers serve diverse markets including power grid utilities, thermal and hydro power stations, renewable energy plants (solar and wind), railway traction networks, and heavy industries such as Bitcoin mining data centers.
A: Yes, with smart manufacturing facilities spanning 250,000 square meters, we offer custom transformer designs matching exact voltage tap ranges, impedance percentages, and regional vector connection groups.
A: Supported by regional offices in over 14 countries, we provide prompt local maintenance, technical assistance, and 24/7 emergency response throughout the product lifecycle.
