Patent ID: 11967858
Assignee: LS ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. An uninterruptible power supply (UPS) module comprising:
a first power supply control module comprising a first AC-DC converter that converts an AC current supplied from a commercial power source into a DC current to output the converted DC current;
a second power supply control module comprising a DC-DC converter that stabilizes a DC current supplied from a battery or converts the DC current into a DC current at a different voltage to output the converted DC current;
a third power supply control module comprising a second AC-DC converter that converts an AC current supplied from a standby power source into a DC current to output the converted DC current; and
a common output terminal defined by connecting output terminals of the first to third power supply control modules to one another to supply a DC current output from any one of the first to third power supply control modules to a load,
wherein in the third power supply control module, breakers and silicon controlled rectifier elements paired with each other are connected in parallel between an output terminal of the second AC-DC converter and the common output terminal, and
wherein in the breakers and the silicon controlled rectifier elements paired with each other, one breaker and one silicon controlled rectifier element are paired with each other to connect in parallel between the output terminal of the second AC-DC converter and the common output terminal.