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.
Traction Transformer
| High-voltage rated voltage | 110kV / 220kV, other voltages customizable |
|---|---|
| Low-voltage rated voltage | 27.5kV / 2 x 27.5kV |
| Rated capacity | 10MVA - 63MVA, larger capacities customizable |
| Power Supply Mode | Traction power supply system, 27.5kV / 2 x 27.5kV |
| Frequency | 50Hz, 60Hz customizable for overseas projects |
| Cooling Type | ONAN / ONAF / OFAF forced-oil-forced-air cooling |
Iron-core Reactor
| High-voltage rated voltage | 6kV / 10kV / 35kV; customizable |
|---|---|
| Low-voltage rated voltage | Not applicable for this reactor configuration |
| Rated capacity | 50kvar - 60Mvar |
| Power Supply Mode | Series current limiting / filter / neutral earthing / motor starting / shunt compensation |
| Frequency | 50Hz; 60Hz customizable for overseas projects |
| Cooling Type | AN air natural cooling, dry type |
VV and VI transformer
| High-voltage rated voltage | Up to 35 kV |
|---|---|
| Low-voltage rated voltage | Customized according to project requirements |
| Rated capacity | 10 kVA - 5000 kVA per single-phase unit; combined three-phase capacity available |
| Power Supply Mode | V-V connection; two independent single-phase transformers forming a V-V connection |
| Frequency | Not specified in the source document |
| Cooling Type | ONAN / ONAF for oil-immersed type; AN / AF for dry-type |
Scott Transformer
| High-voltage rated voltage | 10kV / 35kV / 110kV; customizable |
|---|---|
| Low-voltage rated voltage | Customized for traction / arc furnace loads; typical 2 x 27.5kV |
| Rated capacity | 1MVA - 120MVA |
| Power Supply Mode | Three-phase to two-phase or two-phase to three-phase power conversion |
| Frequency | 50Hz; 60Hz customizable for overseas projects |
| Cooling Type | Oil-immersed: ONAN / ONAF / OFAF; dry-type: AN / AF |
Rectifier Transformer
| High-voltage rated voltage | 3kV - 110kV; higher voltage available upon custom request |
|---|---|
| Low-voltage rated voltage | 0.4kV - 3.5kV valve-side voltage; customized for rectifier bridge applications |
| Rated capacity | 500kVA - 50MVA; larger capacity available upon custom design |
| Power Supply Mode | AC grid input to rectifier stack for high-current DC power supply |
| Frequency | 50Hz / 60Hz; dual-frequency design available |
| Cooling Type | ONAN / ONAF / OFAF for oil-immersed type; AN / AF for dry-type |
Generator Transformer
| High-voltage rated voltage | 110kV / 220kV / 330kV / 500kV, customizable |
|---|---|
| Low-voltage rated voltage | 10.5kV - 27kV, typical; custom voltages available |
| Rated capacity | 30MVA - 800MVA; larger-capacity units customizable |
| Power Supply Mode | Generator-connected, generator terminal connection |
| Frequency | 50Hz; 60Hz customizable for overseas projects |
| Cooling Type | ONAF / OFAF / ODAP forced-oil-circulation cooling |