Patent ID: 11860230
Assignee: JST POWER EQUIPMENT, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 27:
28. A testing system for a circuit breaker, comprising:
a test platform configured to support a truck carrying a circuit breaker in a contact testing position on the test platform, wherein the circuit breaker comprises,
a breaker housing,
a fixed electrical contact and a movable electrical contact mounted within the breaker housing, said movable electrical contact being movable between an open and closed position relative to the fixed electrical contact,
an actuator piston connected to the movable electrical contact and extending downward from the breaker housing and configured to connect to a drive assembly that drives the actuator piston and moves the movable electrical contact between open and closed positions with the fixed electrical contact;
a sensor circuit mounted on the test platform and positioned under the truck and aligned with the circuit breaker when the truck is on the test platform in the contact testing position, wherein the sensor circuit is configured to acquire displacement data of the actuator piston when the movable electrical contact is moved between the open and closed positions; and
a controller coupled to the sensor circuit and configured to receive the displacement data and determine electrical contact erosion within the circuit breaker.