Method of testing and verifying a performance for insulation to ground of a disconnecting switch when breaking a charging current
First Claim
1. A method of testing insulation to ground for a disconnecting switch when breaking a charging current, said disconnecting switch having a movable electrode and a fixed electrode which are arranged in a tank so as to face each other, one of said electrodes being connected to an electrostatic capacity load and the other electrode being connected to a power supply, said test method comprising:
- a first step of setting a distance between said movable and fixed electrodes to a selected distance value, generating an electrical potential with said power supply, said potential being of a predetermined magnitude associated with said selected distance value, applying said potential to said other electrodes to cause a discharge across both electrodes, thereby enabling charge to be accumulated and stored in the capacity of said load;
a second step of applying a pulsed electrical potential generated by said power supply to said other electrode, said pulsed potential being of opposite polarity to said stored charge in said load thereby causing a second discharge across both electrodes; and
a third step of verifying the satisfactory performance of the insulation to ground of said switch by monitoring said second discharge.
1 Assignment
0 Petitions
Accused Products
Abstract
There is disclosed a method of testing and verifying a performance for insulation to ground of a disconnecting switch when breaking a charging current. This disconnecting switch has a movable electrode and a fixed electrode which are arranged in a tank so as to face each other. One of these electrodes is connected to an electrostatic capacity load and the other is connected to a power supply. This test method comprises the steps of: applying a voltage from the power supply through the disconnecting switch to the load to cause the voltage to be trapped in the load; and applying a voltage of the polarity opposite to that of the trapped charged voltage from the power supply to the disconnecting switch to cause the discharge between those electrodes, thereby verifying the performance for insulation to ground.
9 Citations
9 Claims
-
1. A method of testing insulation to ground for a disconnecting switch when breaking a charging current, said disconnecting switch having a movable electrode and a fixed electrode which are arranged in a tank so as to face each other, one of said electrodes being connected to an electrostatic capacity load and the other electrode being connected to a power supply, said test method comprising:
-
a first step of setting a distance between said movable and fixed electrodes to a selected distance value, generating an electrical potential with said power supply, said potential being of a predetermined magnitude associated with said selected distance value, applying said potential to said other electrodes to cause a discharge across both electrodes, thereby enabling charge to be accumulated and stored in the capacity of said load; a second step of applying a pulsed electrical potential generated by said power supply to said other electrode, said pulsed potential being of opposite polarity to said stored charge in said load thereby causing a second discharge across both electrodes; and a third step of verifying the satisfactory performance of the insulation to ground of said switch by monitoring said second discharge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification