What is the maximum frequency in which Multi9 Range Residual Current Devices (RCD) can be used.


14 July 2022

The maximum frequency in which the Multi9 Range Residual Current Devices (RCD) like, ID-RCCB, DPN Vigi and VigiC60, are tested and can be used is 400Hz. 

At 400 Hz, the value of tripping threshold is 45mA and the Test circuit for residual current devices may present the risk of not working when the test button is pressed because of Threshold variation.
Refer attachment for Residual Current Devices tripping curves up to 400 Hz frequency.