| 摘要 |
Apparatus for measuring a defect characteristic of a bushing which has a high voltage electrode passing through a grounded flange, insulating material around the electrode and a capacitance tap, while the bushing is in service connected to a high voltage source, includes an impedor connected permanently between the capacitance tap of the bushing and ground. The impedance of this impedor is so low relative to the impedance of the insulating material of the bushing between the capacitance tap and ground that the voltage between the capacitance tap and ground does not exceed one hundred volts. A pluggable connection permits an external circuit to be coupled to the impedor for providing an indication of a defect characteristic of the bushing.
|
