Medium-voltage switchgear plays a key role in electricity distribution, ensuring a reliable power supply for consumers. However, like any device, it is susceptible to various types of failures that can have serious consequences.

One of the most important indicators of an impending failure is an increase in temperature. Improper connections, overloads and other factors can lead to overheating of switchgear components, which in turn can result in serious damage. Monitoring the temperature using modern sensor systems allows for early detection of potential problems and the implementation of appropriate preventive measures. This makes it possible to increase the operational safety of MV switchgear, minimising the risk of failure and the associated costs.

eTemp system

The eTemp system is an advanced solution for wireless temperature and humidity monitoring, which is widely used in various industrial applications. In particular, its integration with RELF medium voltage (MV) switchgear brings a number of benefits that significantly improve the efficiency and safety of these devices.

The eTemp system enables continuous monitoring of the temperature of key switchgear components, such as screw connections and cable heads. It allows for quick detection and response to any deviations from the norm, preventing potential failures. If the set temperature thresholds are exceeded, the system generates alarms and notifications, allowing immediate preventive action to be taken. This is particularly important in the context of maintaining power continuity and minimising the risk of downtime. The eTemp system can be integrated with remote management systems, enabling temperature monitoring and control from anywhere. The wireless solution also offers:

• lower costs
• installation of sensors in locations where traditional cabling would be problematic or impossible
• ease of installation

The system collects and analyses temperature data, allowing trends and potential problems to be identified before they escalate. This makes it possible to plan maintenance activities more effectively. Real-time temperature monitoring allows potential sources of failure to be quickly detected and eliminated. The eTemp system helps maintain safe working conditions by monitoring temperature and generating alarms when permissible values are exceeded. This allows operators to respond quickly to potential hazards. With remote management and data analysis capabilities, the eTemp system enables more effective maintenance planning, which translates into optimised operating costs. Regular temperature monitoring and rapid response to any deviations from the norm contribute to extending the service life of components, which is beneficial from both an economic and operational point of view.

Relf medium voltage (MV) switchgear

The RELF switchgear is an air-insulated switchgear (AIS) device in a metal enclosure, with a single or double busbar system, designed for several voltage levels:

• 12 kV
• 17,5 kV
• 24 kV
• 36 kV

It ensures high power supply reliability, even in difficult operating conditions, thanks to its high IP4X protection rating. The design has been developed with maximum operational safety in mind. The use of a series of interlocks and an arc-resistant design in the AFLR class ensures the highest level of operational safety. Switchgears can be equipped with electric drives for all switches, enabling remote control and monitoring.

These devices are supplied and successfully operate at many strategic facilities not only in Poland, but also abroad. Such as power stations, GPZ, GPO and industrial plants.

The integration of the eTemp system with RELF MV switchgear brings a number of benefits that significantly improve the efficiency, safety and reliability of these devices. With advanced temperature monitoring, alarm and remote management functions, the eTemp system provides invaluable support to operators and energy infrastructure managers. In addition, RELF switchgears offer high reliability and operational safety, making them the ideal choice for demanding industrial applications and primary power distribution.