GCL 40.5
Instrument
Current Transformer
Indoor or Outdoor
AIS Substation
Insulating Gas
Composite Wood Crating
China
Product Description
GCL series products are electromagnetic gas-insulated current transformers designed for AIS substations. They are of an inverted structure, with secondary windings and primary conductors located at the head of the transformer. Due to the short length and simple structure of the primary conductor at the head, it is particularly suitable for applications where the primary current is 4000A and above. The interior can be filled with SF6 or various environmentally friendly gases for insulation, with a lightweight structure, excellent seismic performance, and simple transportation and installation.







40.5kV | 72.5kV | 126kV | 145kV | 252kV | |
Type | GCL 40.5 | GCL 72.5 | GCL 126 | GCL 145 | GCL 252 |
Rated ins. level/kV | 40.5/95/200 | 72.5/160/350 | 126/230 /550 | 145/275 /650 | 252/460 /1050 |
Rated Fre./Hz | 50/60 | 50/60 | 50/60 | 50/60 | 50/60 |
Rated Pri. current/A | ≤8000 | ≤4000 | ≤4000 | ≤4000 | ≤4000 |
Rated Sec. current/A | 1/5 | 1/5 | 1/5 | 1/5 | 1/5 |
Outline A/mm | 1617 | 1941 | 2341 | 2601 | 4063 |
Outline B/mm | 1329.5 | 1587.5 | 1987.5 | 2247.5 | 3590.5 |
Outline C/mm | 1281 | 1539 | 1939 | 2199 | 3542 |
Outline D/mm | 500 | 760 | 1160 | 1420 | 2580 |
Outline E/mm | 475 | 500 | 500 | 500 | 600 |
Weight/kg | 145 | 185 | 235 | 260 | 530 |

1 | 2 | 3 | 4 | 5 | 6 | 7 |
Bursting disc | Housing | Primary conductor | Composite insulator | Terminal box | Density monitor | Gas filling valve |






1. Q: What are your main products?
A: For over four decades, our company has specialized in developing and producing on-load tap changers. Our extensive product range caters to power transformers, furnace transformers, specialized transformers, and various other industries.
2. Q: Are you a manufacturer?
A: Yes. Wukai Electric (Jiangsu) Co., Ltd. proudly is a leading on-load tap changer manufacturer. With a state-of-the-art factory spanning 20,000 square meters and a dedicated workforce of over 100 employees, our production line has delivered nearly 100,000 units currently operational in networks worldwide. Additionally, we offer comprehensive OEM and ODM services to meet diverse customer needs.
3. Q: How do you control the quality of your products?
A: We implement a stringent quality control system throughout every stage of the production process. Upon completion, each product undergoes thorough testing by relevant standards. A detailed factory inspection report accompanies all shipping documents, ensuring transparency and reliability.
4. Q: What's your payment terms?
A: We are flexible and accept various payment terms such as T/T, L/C, and more.
5. Q: What are your products packaged for transportation?
A: Our products are securely packaged in robust composite wood crates to ensure safe transportation.
6. Q: What kind of credentials do you have?
A: We hold several prestigious credentials including a Quality Management System Certificate and a High-tech Enterprise Certificate, among others.
7. Q: Can I come to visit your factory?
A: Absolutely! We warmly welcome you to visit our factory and witness our operations firsthand.
A: For over four decades, our company has specialized in developing and producing on-load tap changers. Our extensive product range caters to power transformers, furnace transformers, specialized transformers, and various other industries.
2. Q: Are you a manufacturer?
A: Yes. Wukai Electric (Jiangsu) Co., Ltd. proudly is a leading on-load tap changer manufacturer. With a state-of-the-art factory spanning 20,000 square meters and a dedicated workforce of over 100 employees, our production line has delivered nearly 100,000 units currently operational in networks worldwide. Additionally, we offer comprehensive OEM and ODM services to meet diverse customer needs.
3. Q: How do you control the quality of your products?
A: We implement a stringent quality control system throughout every stage of the production process. Upon completion, each product undergoes thorough testing by relevant standards. A detailed factory inspection report accompanies all shipping documents, ensuring transparency and reliability.
4. Q: What's your payment terms?
A: We are flexible and accept various payment terms such as T/T, L/C, and more.
5. Q: What are your products packaged for transportation?
A: Our products are securely packaged in robust composite wood crates to ensure safe transportation.
6. Q: What kind of credentials do you have?
A: We hold several prestigious credentials including a Quality Management System Certificate and a High-tech Enterprise Certificate, among others.
7. Q: Can I come to visit your factory?
A: Absolutely! We warmly welcome you to visit our factory and witness our operations firsthand.