EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of IEC EN 61869-1 testing. This International standard is applicable to newly manufactured instrument transformers with analog or digital outputs for use with electrical measuring instruments or electrical protective devices with rated frequencies between 15 Hz and 100 Hz.
This standard is a product family standard and covers general requirements only. The product standard for all types of instrument transformers consists of this standard and the relevant specific standard.
If the actual service conditions differ from these normal service conditions, the instrument transformers shall be designed or appropriately arranged to meet the specific service conditions required by the purchaser.
For most of the peak voltage (Um) ratings for equipment, several rated insulation levels are available to allow different performance criteria or overvoltage models to be applied. The selection should be made taking into account the degree of fast pre- and slow pre-overvoltage exposure, the neutral grounding type of the system, and the type of surge limiting devices.
The manufacturer shall specify the type of fluid to be used in the equipment and the required quantity and quality. The manufacturer shall specify the type of gas to be used in the equipment and the required quantity and quality.
The temperature rise of the windings is limited to the lowest insulation class of the winding itself or the surrounding environment in which it is embedded. If instrument transformers are used inside the enclosure, attention should be paid to the temperature reached by the surrounding cooling medium inside the enclosure.
EUROLAB assists manufacturers with IEC EN 61869-1 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.
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