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Question 47 phase sequence

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    Question 47 phase sequence

    Hi every body, who can help me here:
    How would you go about testing a microprocessor relay with the 47 function that measures 120 volts phase to phase?
    a- Single phase voltage multiplied by 1.73
    b- 2 line-to-neutral voltages of 69 volts
    c- 2 channels connected open Delta, one at O degrees, and the other at 60 degrees leading
    d- 2 channels connected open Delta, one at O degrees, and the other at 120 degrees leading

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