| 摘要 |
A current detecting apparatus is provided to reduce the installation cost and facilitate the installation by additionally inserting a current sensor sensing a zero phase current in a housing of an electric apparatus having sensors sensing R, S, T phases, respectively. Pipes(8,9,10) which conducting wires having an R phase, an S phase, and a T phase are penetrated are formed in a housing(3) of a current detecting apparatus. An R phase sensor(4), an S phase sensor(5), and a T phase sensor(6) are installed in an outer circumference of the pipes. A zero phase sensor(7) is installed in an end of the pipes. Outputs of the R, T, S phase sensors are connected with a connecting terminal(11), and an output of the zero phase sensor is connected with another connecting terminal(12). The connecting terminals are connected with a display and a controller. |
