IEC EN 60255-3 Electrical Relays - Part 3: Single Input Energizing Quantity Measurement Relays with Dependent or Independent Time

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of IEC EN 60255-3 testing. This standard applies to electrical measuring relays and protection equipment that have a single input energizing amount and the operating time is dependent on or independent of this quantity.

For relays with a specified delayed run time with a maximum run time greater than 200 ms, the manufacturer must declare the maximum overshoot time when the input energy amount suddenly changes from one specified value to a second specified value that would not normally cause operation. All other influencing quantities and factors will be at reference values.

The overshoot time is the difference between the operating time of the relay at the specified value of the input energized amount and the maximum time of the value of the input energized amount and becomes insufficient when suddenly reduced to a certain value below the operating level. causes it to work.

Dependent specified times do not have standard values. The relationship between operating times and characteristic quantity can be expressed by means of a characteristic curve. The shape of this curve must be declared by the manufacturer by means of an equation or graphical means.

EUROLAB assists manufacturers with IEC EN 60255-3 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.