WHO WE ARE
Top Providers of Commercial & Industrial Transformers
CTSS offers a comprehensive selection of commercial and industrial transformers. Our company designs, manufactures, and supplies transformers with an annual production capacity of 36 million kVA and voltage levels up to 330kV, with 500kV available upon request.
Expert design engineers support all of our power transformer projects to deliver solutions that meet your specific needs. Our quality management system is certified to GB/T 19001-2016 / ISO 9001:2015, with UL/cUL certification and SGS compliance verification supporting our commitment to quality, safety, and reliable transformer solutions.
Ground Mounted Transformer
| High-voltage rated voltage | 6kV / 10kV / 20kV / 35kV |
|---|---|
| Low-voltage rated voltage | 0.4kV / 0.48kV / 0.69kV |
| Rated capacity | 10kVA - 5000kVA |
| Power Supply Mode | Not specified |
| Frequency | 50Hz / 60Hz, 60Hz standard for South America |
| Cooling Type | Oil-immersed: ONAN/ONAF; Dry-type: AN/AF |
Containerized Substation
| High-voltage rated voltage | 6 kV - 35 kV (typical); custom higher voltage available |
|---|---|
| Low-voltage rated voltage | 0.4 kV, 6.6 kV, 10.5 kV, etc., customizable |
| Rated capacity | 500 kVA - 30 MVA; multi-module parallel for larger capacity |
| Power Supply Mode | Container Power Transformer System; Grid Connection And Renewable Energy Applications |
| Frequency | 50 Hz / 60 Hz, dual-frequency custom for overseas projects |
| Cooling Type | Transformer: ONAN / ONAF / OFAF; Container enclosure: air-conditioning + forced ventilation |
| Fluid Type | Mineral Oil; Ester Fluid Optional |
Mini-Substation
| Low-voltage rated voltage | 0.4 kV; Custom 480 V etc. for export projects |
|---|---|
| Rated capacity | 50 kVA - 2500 kVA |
| Power Supply Mode | Loop-feed type; Radial-feed type; Dual-power-supply type |
| Frequency | 50 Hz; 60 Hz customizable for overseas projects |
| Cooling Type | Transformer: ONAN / ONAF;Cabinet: Natural ventilation + temperature-controlled forced-air cooling |
Pole Mounted Transformer
| High-voltage rated voltage | Primary Side: 10kV, 11kV, 12.47kV, 13.8kV, 15kV, 20kV, 22kV, 24.94kV, 25kV, 33kV, 35kV |
|---|---|
| Low-voltage rated voltage | Secondary Side: 120V, 208V, 220V, 230V, 240V, 400V, 415V, 480V, 600V |
| Rated capacity | 5kVA - 500kVA Common Ratings: 10kVA, 15kVA, 25kVA, 37.5kVA, 50kVA, 75kVA, 100kVA, 167kVA, 250kVA |
| Power Supply Mode | Pole Mounted Distribution Utility Distribution Network Residential Power Supply Commercial Power Supply |
| Frequency | 50Hz 60Hz |
| Cooling Type | ONAN Oil Natural Air Natural Cooling |
| Fluid Type | Mineral Insulating Oil Natural Ester Fluid Optional |
Compact Pad Mounted Transformer
| High-voltage rated voltage | 6 kV–24 kV; up to 34.5 kV for North-American export |
|---|---|
| Low-voltage rated voltage | 0.4 kV; export versions can be customized to 480 V / 208 V etc. |
| Rated capacity | 50 kVA–2500 kVA |
| Power Supply Mode | Loop-feed type / Radial-feed type |
| Frequency | 50 Hz; 60 Hz customizable for overseas projects |
| Cooling Type | ONAN – Oil Natural Air Natural cooling |