COMEM S.p.A. products

Leakage current, arcing, flashovers, loss of insulating liquid, or excessively high flow rates can generate gas inside the transformer oil and affect the transformer performance. Assure reliable and safe operation of the transformer and a power supply network. Choose our Buchholz relay type eBR, an evolution of our conventional Buchholz relays. It continuously monitors gas accumulation and oil flow to the conservator from the remote. You will get a reliable product designed to discharge the accumulated gas and detect unexpected oil flow speed and avoid transformer shut down. The Buchholz relay is equipped with a digital interface for easy connection to smart grid applications and can be integrated into a system through a central control unit. It is compatible with our complete eDevice family and can be connected also with third party devices.

Liquids like mineral and silicone oils insulate and cool a transformer. You need to monitor the level of the oil to assure reliable and safe operation of the transformer. Choose our new contactless ultrasonic sensor-based liquid level indicator type CU eOLI and get continuous high accuracy measurement of liquid level in transformer with or without rubber bag. The sensor calculates the distance of the targeted surface in the transformer measuring the ultrasonic wave flight time. The monitors the preset values remotely or choose to visualize the values on-site at men-height through the easy-to-read eViewer dial installed on the transformer wall and decide on the best transformer maintenance schedule. The indicator is equipped with a digital interface for easy connection to smart grid applications and can be integrated into a system through a central control unit. It is compatible with our complete eDevice family and can be connected also with third-party devices.

Epoxy resin insulation material offers different characteristics compared to porcelain. It is lighter, more durable, and more flexible. Epoxy resin bushings are cast as one piece and do not require assembly. We offer a wide range of non-condenser epoxy resin bushings for low voltage and medium voltage applications.

Porcelain insulation is impervious to moisture and grants successful operation over many years. We offer wide range of non-condenser porcelain bushings for low voltage and medium voltage applications, including connecting flags for the insulators.

Combined Resin Silicon bushing type CRS is a non-condenser, non-graded, dry-type bushing, available for oil-filled power transformers. It is especially eligible for applications required to withstand extreme conditions, from very low temperatures up to high levels of humidity and pollution. CRS bushing is completely oil-free, paper-free, and porcelain-free. When choosing CRS, you will guarantee the highest safety to people and the transformer. In case of a failure, there will be no risk of oil explosion and no risk of people injured or properties damaged by the shattering of porcelain fragments.