From the Alps to the Andes: The Little Transformer That’s Powering the World’s Most Ambitious Tunnels

Talk is cheap. Performance speaks. Guangzhou Aputon Electrical Co., Ltd. has already deployed its Three Phase Box Type Compact Transformer for Tunnel in some of the most challenging underground infrastructure projects across three continents. And the feedback is consistent: reliable, compact, and built to last.

In Southeast Asia, a 2.2km highway tunnel was struggling with voltage drops and frequent transformer overheating. Aputon delivered a customized three-phase 1250kVA compact unit with forced air cooling and IP55 enclosure. Result: zero unplanned outages in 18 months. In Eastern Europe, a railway tunnel modernization project required transformers that could fit into existing 1970s niches. Our compact box-type solution slid right in, delivering 630kVA of clean power for signaling and emergency lighting.

Since our founding in December 2015, Aputon has grown into a globally trusted name in high and low voltage electrical sets, cable accessories, and UPS storage. Our headquarters in Guangzhou and Foshan allow us to manufacture and test custom designs rapidly. We serve key markets including the Philippines, Nigeria, Peru, Romania, and Vietnam—always with ISO9001, ISO14001, and OHSAS18001 assurance.

Every tunnel has unique constraints. That’s why we don’t offer one-size-fits-all. We listen, design, test, and deliver. Join the growing list of tunnel engineers who have made the switch to Aputon. Your project’s success story could be next.