AIR Sprieguma un frekvences relejs ar vektoru virziena funkciju SPI1021

AIR Sprieguma un frekvences relejs ar vektoru virziena funkciju tīkla un elektrostacijas aizsardzībai SPI1021

Voltage- and Frequency-Relay with integrated Vector-Shift-Relay Grid- and Plant Protection.
For more information, we refer you to the datasheet and certificates below which are available to download. Or visit www.ziehl.de and look for the SPI1021 under the Mains monitoring group.