| 摘要 |
A power and control unit for low and medium voltage applications, operatively couplable to one or more functions of a low or medium voltage apparatus, comprising:
- an internal self-diagnostic function operatively coupled to a signal-generating function;
- a binary input operatively coupled to said internal self-diagnostic function;
- a low-impedance variable load connectable in parallel to said binary input,
said binary input comprising a control function operatively connected to said low-impedance variable load and also operatively connected, through a signal-detecting function, to said internal self-diagnostic function and to said one or more functions of said low or medium voltage apparatus. |
