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Amendment 3 compatible device

Newfutile

During an eicr I have come across a wylex wrds  40/2 BS EN 61008 (RCD) Residual Current Device on a board for the solar inverter.

The diagram on the side seems to suggest it has contacts that disconnect the test button.also it does not seem to be marked in/out,line/load or arrows.

Would this mean that it's bi directional?

Also the BS EN 60898 mcb an nhxb20 is this bi directional?

Or should I just contact electrium 

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    we have RCD testers, it would be relatively easy to hotwire an rcbo with flying leads from a suitable mcb so that it is not connected to the busbar, wire it both ways up and do ramp and time tests to see if it trips in each direction. 

  • 0 in reply to OlympusMons
    OlympusMons said:
    we have RCD testers, it would be relatively easy to hotwire an rcbo with flying leads from a suitable mcb so that it is not connected to the busbar, wire it both ways up and do ramp and time tests to see if it trips in each direction. 

    That won't necessarily identify full bidirectional functionality. In some cases, the device is only damaged when the test button is pressed, for an incorrect orientation of connection. There may also be issues with the way arcs are extinguished, if the device is required to break high fault currents "the wrong way", and this orientation has not been type-tested according to the relevant standards.

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  • 0 in reply to OlympusMons
    OlympusMons said:
    we have RCD testers, it would be relatively easy to hotwire an rcbo with flying leads from a suitable mcb so that it is not connected to the busbar, wire it both ways up and do ramp and time tests to see if it trips in each direction. 

    That won't necessarily identify full bidirectional functionality. In some cases, the device is only damaged when the test button is pressed, for an incorrect orientation of connection. There may also be issues with the way arcs are extinguished, if the device is required to break high fault currents "the wrong way", and this orientation has not been type-tested according to the relevant standards.

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