Patent ID: 11938836
Assignee: KOREA ELECTRIC POWER CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. An electric car charging apparatus using a pad-mounted transformer, comprising:
a first port configured to supply power to an electric car;
a second port electrically connected to the first port and configured to receive power from a pad-mounted transformer; and
a first breaking unit configured to switch between connection and disconnection of the first port and the second port;
a second breaking unit configured to connect the first port to the second port when charging of the electric car starts and disconnect the first port from the second port when the charging of the electric car stops;
a meter configured to measure a current, a voltage, and electric power of power passing from the first port to the second port;
a processor configured to generate pad-mounted transformer abnormality information on the basis of a measurement result of the meter; and
a controller configured to control a switching operation of the first breaking unit on the basis of the pad-mounted transformer abnormality information,
wherein the processor generates at least one piece of over current information, overvoltage information, grounding information, short-circuit information, frozen information, and electric leakage information as the pad-mounted transformer abnormality information.