Patent ID: 6624622
Filing Date: 2003-09-23
Classification: G01R

Abstract:
A probe for measuring voltage/current of a low voltage power distribution cable, comprising:a body having a first opening upwardly formed therein for receiving a low voltage power distribution cable and a first recess formed in the shape of a U around the first opening, and made of an insulating material; a lower core inserted into the first recess of the body and formed in the shape of a U; a coil wound around an insulating material installed at the lower core for detecting an induction current induced by means of current flowing through the low voltage power distribution cable; a capacitor connected between both end output lines extended from the coil to be parallel with the coil so as to filter out noise components; a resistor connected between the both end output lines extended from the coil to be parallel with the capacitor; a ground line electrically connected to one end of the lower core; a voltage detection terminal electrically connected to the low voltage power distribution cable for detecting voltage applied to the low voltage power distribution cable; a voltage output line for outputting the voltage detected by the voltage detection terminal; a connector connected to output sides of the both end output lines extended from the coil, the ground line and the voltage output line; an end plate attached to the body for covering the first recess, the end plate being provided with a second opening formed therein in approximately the same shape as the first opening formed in the body and a second recess formed therein in an approximate U shape both to cover the coil mounted in the first recess of the body and to receive a nut interlocked with the voltage detection terminal; a top cover mounted to the top surfaces of the body and the end plate by nuts interlocked with a fixed bolt fixedly mounted to the body and a movable bolt; and an upper core inserted in the top cover to be opposite to the lower core installed in the body.